Darwin Core Data Package - Quick Reference Guide

Introduction

This guide is provided to assist users to understand the structure and content of Darwin Core Data Packages. The Darwin Core Data Package (DwC-DP) is an implementation of the Darwin Core Conceptual Model following the specifications in the Darwin Core Data Package Guide.

This Quick Reference Guide is distinct from the classic Darwin Core Quick Reference Guide in that this guide contains information beyond the simple term definitions. It includes all the information about how to use Darwin Core in the context of a Darwin Core Data Package. That means it includes data types, value constraints, table relationship constraints and repeats these everywhere in the structure that a given term is found. This guide makes reference to numerous terms borrowed from standard vocabularies, both internal and external to TDWG, other than the Darwin Core. In general these terms are not in the classical Darwin Core reference guide nor in the Darwin Core list of terms as they are externally managed and reused in this context.

DwC-DP is implemented using tables, most of which correspond directly to classes in Darwin Core. The sidebar at the right provides quick access to table definitions, and the definitions of available fields for each table. For an overview of the tables and their relationships, see the Visual Summary. Supplementary to this document is the Darwin Core Data Package Relationship Explorer, which provides an interactive visual guide to the relationships between tables in DwC-DP.

Event

Identifier: http://rs.tdwg.org/dwc/dwc-dp/event

Description: An action, process, or set of circumstances occurring at a dcterms:Location during a period of time.

Examples:

`a material collecting event`

`a bird observation`

`a camera trap image capture`

`an organism occurrence`

`a biotic survey`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/Event

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
parentEventID	happened during	event	eventID	No
eventConductedByID	conducted by	agent	agentID	No
georeferencedByID	georeferenced by	agent	agentID	No
georeferenceProtocolID	followed	protocol	protocolID	No
geologicalContextID	within	geological-context	geologicalContextID	No

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Event
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`INBO:VIS:Ev:00009375`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

parentEventID

Title (Label)	Parent Event ID
Namespace	dwc
Table:	Event
Description	An identifier for a broader dwc:Event that contains this and potentially other dwc:Events.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`A1` (parentEventID to identify the main Whittaker Plot in nested samples, each with its own eventID - `A1:1`, `A1:2`).
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/parentEventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/parentEventID-2023-06-28

preferredEventName

Title (Label)	Preferred Event Name
Namespace	dcterms
Table:	Event
Description	The name of a dwc:Event preferred in searches and results.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/title

eventCategory

Title (Label)	Event Category
Namespace	dwc
Table:	Event
Description	A broad category that best matches the nature of a dwc:Event.
Comments	Recommended best practice is to use a limited, tightly controlled vocabulary.
Examples	`material gathering` `nucleotide analysis` `occurrence` `organism interaction` `survey` `varied`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/eventCategory

eventType

Title (Label)	Event Type
Namespace	dwc
Table:	Event
Description	A narrow category that best matches the nature of a dwc:Event.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`BioBlitz` `camera trap deployment` `expedition` `project` `site visit` `trawl`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventType
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventType-2023-06-28

datasetName

Title (Label)	Dataset Name
Namespace	dwc
Table:	Event
Description	A name of a source dataset.
Examples	`Grinnell Resurvey Mammals` `Lacey Ctenomys Recaptures`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/datasetName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/datasetName-2023-06-28

datasetID

Title (Label)	Dataset ID
Namespace	dwc
Table:	Event
Description	An identifier for a source dataset.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/datasetID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/datasetID-2017-10-06

fieldNumber

Title (Label)	Field Number
Namespace	dwc
Table:	Event
Description	An identifier given to a dwc:Event in the field.
Comments	Often serves as a link between field notes and a dwc:Event. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`RV Sol 87-03-08`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/fieldNumber
dcterms:references	http://rs.tdwg.org/dwc/terms/version/fieldNumber-2023-06-28

eventConductedBy

Title (Label)	Event Conducted By
Namespace	dwc
Table:	Event
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for conducting or recording a dwc:Event.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`José E. Crespo` `Oliver P. Pearson \| Anita K. Pearson` `FMNH`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/recordedBy
dcterms:references	http://rs.tdwg.org/dwc/terms/version/recordedBy-2023-06-28

eventConductedByID

Title (Label)	Event Conducted By ID
Namespace	dwc
Table:	Event
Description	An identifier for a dcterms:Agent responsible for conducting or recording a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://orcid.org/0000-0002-1825-0097` `https://ror.org/00mh9zx15`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/recordedByID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/recordedByID-2023-06-28

eventDate

Title (Label)	Event Date
Namespace	dwc
Table:	Event
Description	A date-time or time interval during which a dwc:Event occurred.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019. Not suitable for a time in a geological context.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventDate-2025-06-12

eventTime

Title (Label)	Event Time
Namespace	dwc
Table:	Event
Description	The time or interval during which a dwc:Event occurred.
Comments	Recommended best practice is to use a time of day that conforms to ISO 8601-1:2019.
Examples	`14:07-06:00` (at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `08:40:21Z` (at or after 8:40:21am and before 8:41:22am UTC) `13:00:00Z/15:30:00Z` (at or after 1pm and before 3:30pm UTC)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventTime
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventTime-2025-06-12

startDayOfYear

Title (Label)	Start Day Of Year
Namespace	dwc
Table:	Event
Description	The earliest integer day of the year on which a dwc:Event occurred.
Comments	The value is 1 for January 1 and 365 for December 31, except in a leap year, in which case it is 366.
Examples	`1` (1 January) `32` (1 February) `366` (31 December) `365` (30 December in a leap year, 31 December in a non-leap year)
Type	integer
Constraints	{"minimum": 1, "maximum": 366}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/startDayOfYear
dcterms:references	http://rs.tdwg.org/dwc/terms/version/startDayOfYear-2023-06-28

endDayOfYear

Title (Label)	End Day Of Year
Namespace	dwc
Table:	Event
Description	The latest integer day of the year on which a dwc:Event occurred.
Comments	The value is 1 for January 1 and 365 for December 31, except in a leap year, in which case it is 366.
Examples	`1` (1 January) `32` (1 February) `366` (31 December) `365` (30 December in a leap year, 31 December in a non-leap year)
Type	integer
Constraints	{"minimum": 1, "maximum": 366}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/endDayOfYear
dcterms:references	http://rs.tdwg.org/dwc/terms/version/endDayOfYear-2023-06-28

year

Title (Label)	Year
Namespace	dwc
Table:	Event
Description	The four-digit year in which the dwc:Event occurred, according to the Common Era Calendar.
Examples	`1160` `2008`
Type	integer
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/year
dcterms:references	http://rs.tdwg.org/dwc/terms/version/year-2023-06-28

month

Title (Label)	Month
Namespace	dwc
Table:	Event
Description	The integer month in which the dwc:Event occurred.
Examples	`1` (January) `10` (October)
Type	integer
Constraints	{"minimum": 1, "maximum": 12}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/month
dcterms:references	http://rs.tdwg.org/dwc/terms/version/month-2023-06-28

day

Title (Label)	Day
Namespace	dwc
Table:	Event
Description	The integer day of the month on which the dwc:Event occurred.
Examples	`9` `28`
Type	integer
Constraints	{"minimum": 1, "maximum": 31}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/day
dcterms:references	http://rs.tdwg.org/dwc/terms/version/day-2023-06-28

verbatimEventDate

Title (Label)	Verbatim Event Date
Namespace	dwc
Table:	Event
Description	The verbatim original representation of the date and time information for a dwc:Event.
Examples	`spring 1910` `Marzo 2002` `1999-03-XX` `17IV1934`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimEventDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimEventDate-2023-06-28

verbatimLocality

Title (Label)	Verbatim Locality
Namespace	dwc
Table:	Event
Description	An original textual description of a dcterms:Location.
Examples	`25 km NNE Bariloche por R. Nac. 237`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimLocality
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimLocality-2021-07-15

verbatimElevation

Title (Label)	Verbatim Elevation
Namespace	dwc
Table:	Event
Description	An original description of the elevation of a dcterms:Location.
Examples	`100-200 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimElevation
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimElevation-2017-10-06

verbatimDepth

Title (Label)	Verbatim Depth
Namespace	dwc
Table:	Event
Description	The original description of the depth below the local surface.
Examples	`100-200 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimDepth
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimDepth-2017-10-06

verbatimCoordinates

Title (Label)	Verbatim Coordinates
Namespace	dwc
Table:	Event
Description	Verbatim original spatial coordinates of a dcterms:Location.
Comments	The coordinate ellipsoid, geodeticDatum, or full Spatial Reference System (SRS) for these coordinates should be stored in dwc:verbatimSRS and the coordinate system should be stored in dwc:verbatimCoordinateSystem.
Examples	`41 05 54S 121 05 34W` `17T 630000 4833400`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimCoordinates
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimCoordinates-2023-06-28

verbatimLatitude

Title (Label)	Verbatim Latitude
Namespace	dwc
Table:	Event
Description	A verbatim original latitude of a dcterms:Location.
Comments	The coordinate ellipsoid, geodeticDatum, or full Spatial Reference System (SRS) for these coordinates should be stored in dwc:verbatimSRS and the coordinate system should be stored in dwc:verbatimCoordinateSystem.
Examples	`41 05 54.03S`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimLatitude
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimLatitude-2023-06-28

verbatimLongitude

Title (Label)	Verbatim Longitude
Namespace	dwc
Table:	Event
Description	A verbatim original longitude of a dcterms:Location.
Comments	The coordinate ellipsoid, geodeticDatum, or full Spatial Reference System (SRS) for these coordinates should be stored in dwc:verbatimSRS and the coordinate system should be stored in dwc:verbatimCoordinateSystem.
Examples	`121d 10' 34" W`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimLongitude
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimLongitude-2023-06-28

verbatimCoordinateSystem

Title (Label)	Verbatim Coordinate System
Namespace	dwc
Table:	Event
Description	A coordinate format for dwc:verbatimLatitude and dwc:verbatimLongitude or dwc:verbatimCoordinates.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`decimal degrees` `degrees decimal minutes` `degrees minutes seconds` `UTM`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimCoordinateSystem
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimCoordinateSystem-2023-06-28

verbatimSRS

Title (Label)	Verbatim SRS
Namespace	dwc
Table:	Event
Description	The ellipsoid, geodetic datum, or spatial reference system (SRS) upon which coordinates given in dwc:verbatimLatitude and dwc:verbatimLongitude, or dwc:verbatimCoordinates are based.
Comments	Recommended best practice is to use the EPSG code of the SRS, if known. Otherwise use a controlled vocabulary for the name or code of the geodetic datum, if known. Otherwise use a controlled vocabulary for the name or code of the ellipsoid, if known. If none of these is known, use the value `not recorded`. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`EPSG:4326` `WGS84` `NAD27` `Campo Inchauspe` `European 1950` `Clarke 1866` `not recorded`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimSRS
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimSRS-2025-06-12

georeferenceVerificationStatus

Title (Label)	Georeference Verification Status
Namespace	dwc
Table:	Event
Description	A categorical description of the extent to which the georeference has been verified to represent the best possible spatial description for the dcterms:Location of the dwc:Occurrence.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`unable to georeference` `requires georeference` `requires verification` `verified by data custodian` `verified by contributor`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferenceVerificationStatus
dcterms:references	http://rs.tdwg.org/dwc/terms/version/georeferenceVerificationStatus-2023-06-28

habitat

Title (Label)	Habitat
Namespace	dwc
Table:	Event
Description	A category or description of the habitat in which the dwc:Event occurred.
Comments	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`oak savanna` `pre-cordilleran steppe`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/habitat
dcterms:references	http://rs.tdwg.org/dwc/terms/version/habitat-2023-06-28

eventEffort

Title (Label)	Event Effort
Namespace	dwc
Table:	Event
Description	An amount of effort expended during a dwc:Event.
Examples	`40 trap-nights` `10 observer-hours` `10 km by foot` `30 km by car`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/samplingEffort
dcterms:references	http://rs.tdwg.org/dwc/terms/version/samplingEffort-2023-06-28

fieldNotes

Title (Label)	Field Notes
Namespace	dwc
Table:	Event
Description	One of a) an indicator of the existence of, b) a reference to (publication, URI), or c) the text of notes taken in the field about the dwc:Event.
Comments	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Notes available in the Grinnell-Miller Library.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/fieldNotes
dcterms:references	http://rs.tdwg.org/dwc/terms/version/fieldNotes-2023-06-28

eventReferences

Title (Label)	Event References
Namespace	dwc
Table:	Event
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Event.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`http://www.sciencemag.org/cgi/content/abstract/322/5899/261` `Christopher J. Conroy, Jennifer L. Neuwald. 2008. Phylogeographic study of the California vole, Microtus californicus Journal of Mammalogy, 89(3):755-767.` `Steven R. Hoofer and Ronald A. Van Den Bussche. 2001. Phylogenetic Relationships of Plecotine Bats and Allies Based on Mitochondrial Ribosomal Sequences. Journal of Mammalogy 82(1):131-137. \| Walker, Faith M., Jeffrey T. Foster, Kevin P. Drees, Carol L. Chambers. 2014. Spotted bat (Euderma maculatum) microsatellite discovery using illumina sequencing. Conservation Genetics Resources.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/associatedReferences
dcterms:references	http://rs.tdwg.org/dwc/terms/version/associatedReferences-2023-06-28

eventRemarks

Title (Label)	Event Remarks
Namespace	dwc
Table:	Event
Description	Comments or notes about the dwc:Event.
Examples	`After the recent rains the river is nearly at flood stage.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventRemarks-2023-06-28

locationID

Title (Label)	Location ID
Namespace	dwc
Table:	Event
Description	An identifier for a dcterms:Location.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://opencontext.org/subjects/768A875F-E205-4D0B-DE55-BAB7598D0FD1`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/locationID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/locationID-2023-06-28

higherGeographyID

Title (Label)	Higher Geography ID
Namespace	dwc
Table:	Event
Description	An identifier for the geographic region within which the dcterms:Location occurred.
Comments	Recommended best practice is to use a persistent identifier from a controlled vocabulary such as the Getty Thesaurus of Geographic Names.
Examples	`http://vocab.getty.edu/tgn/1002002` (Antártida e Islas del Atlántico Sur, Territorio Nacional de la Tierra del Fuego, Argentina).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/higherGeographyID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/higherGeographyID-2023-06-28

higherGeography

Title (Label)	Higher Geography
Namespace	dwc
Table:	Event
Description	A list (concatenated and separated) of geographic names less specific than the information captured in the dwc:locality term.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `), with terms in order from least specific to most specific.
Examples	`North Atlantic Ocean` `South America \| Argentina \| Patagonia \| Parque Nacional Nahuel Huapi \| Neuquén \| Los Lagos` with accompanying values `South America` (continent) `Argentina` (country), `Neuquén` (first order division), and `Los Lagos` (second order division)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/higherGeography
dcterms:references	http://rs.tdwg.org/dwc/terms/version/higherGeography-2023-06-28

continent

Title (Label)	Continent
Namespace	dwc
Table:	Event
Description	The name of the continent in which the dcterms:Location occurs.
Comments	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names. Recommended best practice is to leave this field blank if the dcterms:Location spans multiple entities at this administrative level or if the dcterms:Location might be in one or another of multiple possible entities at this level. Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`Africa` `Antarctica` `Asia` `Europe` `North America` `Oceania` `South America`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/continent
dcterms:references	http://rs.tdwg.org/dwc/terms/version/continent-2023-06-28

waterBody

Title (Label)	Water Body
Namespace	dwc
Table:	Event
Description	The name of the water body in which the dcterms:Location occurs.
Comments	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names.
Examples	`Indian Ocean` `Baltic Sea` `Hudson River` `Lago Nahuel Huapi`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/waterBody
dcterms:references	http://rs.tdwg.org/dwc/terms/version/waterBody-2023-06-28

islandGroup

Title (Label)	Island Group
Namespace	dwc
Table:	Event
Description	The name of the island group in which the dcterms:Location occurs.
Comments	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names.
Examples	`Alexander Archipelago` `Archipiélago Diego Ramírez` `Seychelles`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/islandGroup
dcterms:references	http://rs.tdwg.org/dwc/terms/version/islandGroup-2023-06-28

island

Title (Label)	Island
Namespace	dwc
Table:	Event
Description	The name of the island on or near which the dcterms:Location occurs.
Comments	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names.
Examples	`Nosy Be` `Bikini Atoll` `Vancouver` `Viti Levu` `Zanzibar`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/island
dcterms:references	http://rs.tdwg.org/dwc/terms/version/island-2023-06-28

country

Title (Label)	Country
Namespace	dwc
Table:	Event
Description	The name of the country or major administrative unit in which the dcterms:Location occurs.
Comments	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names. Recommended best practice is to leave this field blank if the dcterms:Location spans multiple entities at this administrative level or if the dcterms:Location might be in one or another of multiple possible entities at this level. Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`Denmark` `Colombia` `España`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/country
dcterms:references	http://rs.tdwg.org/dwc/terms/version/country-2023-06-28

countryCode

Title (Label)	Country Code
Namespace	dwc
Table:	Event
Description	The standard code for the country in which the dcterms:Location occurs.
Comments	Recommended best practice is to use an ISO 3166-1-alpha-2 country code, or 'ZZ' (for an unknown location or a location unassignable to a single country code), or 'XZ' (for the high seas beyond national jurisdictions). Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`AR` `SV` `XZ` `ZZ`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/countryCode
dcterms:references	http://rs.tdwg.org/dwc/terms/version/countryCode-2025-06-12

stateProvince

Title (Label)	First Order Division
Namespace	dwc
Table:	Event
Description	The name of the next smaller administrative region than country (state, province, canton, department, region, etc.) in which the dcterms:Location occurs.
Comments	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names. Recommended best practice is to leave this field blank if the dcterms:Location spans multiple entities at this administrative level or if the dcterms:Location might be in one or another of multiple possible entities at this level. Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`Montana` `Minas Gerais` `Córdoba`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/stateProvince
dcterms:references	http://rs.tdwg.org/dwc/terms/version/stateProvince-2023-06-28

county

Title (Label)	Second Order Division
Namespace	dwc
Table:	Event
Description	The full, unabbreviated name of the next smaller administrative region than stateProvince (county, shire, department, etc.) in which the dcterms:Location occurs.
Comments	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names. Recommended best practice is to leave this field blank if the dcterms:Location spans multiple entities at this administrative level or if the dcterms:Location might be in one or another of multiple possible entities at this level. Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`Missoula` `Los Lagos` `Mataró`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/county
dcterms:references	http://rs.tdwg.org/dwc/terms/version/county-2023-06-28

municipality

Title (Label)	Municipality
Namespace	dwc
Table:	Event
Description	The full, unabbreviated name of the next smaller administrative region than county (city, municipality, etc.) in which the dcterms:Location occurs. Do not use this term for a nearby named place that does not contain the actual dcterms:Location.
Comments	Recommended best practice is to use a controlled vocabulary such as the Getty Thesaurus of Geographic Names. Recommended best practice is to leave this field blank if the dcterms:Location spans multiple entities at this administrative level or if the dcterms:Location might be in one or another of multiple possible entities at this level. Multiplicity and uncertainty of the geographic entity can be captured either in the term dwc:higherGeography or in the term dwc:locality, or both.
Examples	`Holzminden` `Araçatuba` `Ga-Segonyana`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/municipality
dcterms:references	http://rs.tdwg.org/dwc/terms/version/municipality-2023-06-28

locality

Title (Label)	Locality
Namespace	dwc
Table:	Event
Description	The specific description of the place.
Comments	Less specific geographic information can be provided in other geographic terms (dwc:higherGeography, dwc:continent, dwc:country, dwc:stateProvince, dwc:county, dwc:municipality, dwc:waterBody, dwc:island, dwc:islandGroup). This term may contain information modified from the original to correct perceived errors or standardize the description.
Examples	`Bariloche, 25 km NNE via Ruta Nacional 40 (=Ruta 237)` `Queets Rainforest, Olympic National Park`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/locality
dcterms:references	http://rs.tdwg.org/dwc/terms/version/locality-2023-06-28

siteNumber

Title (Label)	Site Number
Namespace	dwc
Table:	Event
Description	An identifier (preferably globally unambiguous) for a named site.
Examples	`USGS CENO LOC 21387`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/siteNumber

minimumElevationInMeters

Title (Label)	Minimum Elevation In Meters
Namespace	dwc
Table:	Event
Description	A lower limit of a range of elevation in meters above a dwc:verticalDatum.
Comments	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`-100` `802`
Type	number
Constraints	{"minimum": -430, "maximum": 8850}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/minimumElevationInMeters
dcterms:references	http://rs.tdwg.org/dwc/terms/version/minimumElevationInMeters-2023-06-28

maximumElevationInMeters

Title (Label)	Maximum Elevation In Meters
Namespace	dwc
Table:	Event
Description	An upper limit of a range of elevation in meters above a dwc:verticalDatum.
Comments	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`-205` `1236`
Type	number
Constraints	{"minimum": -430, "maximum": 8850}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/maximumElevationInMeters
dcterms:references	http://rs.tdwg.org/dwc/terms/version/maximumElevationInMeters-2023-06-28

verticalDatum

Title (Label)	Vertical Datum
Namespace	dwc
Table:	Event
Description	The vertical datum used as the reference upon which the values in the elevation terms are based.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`EGM84` `EGM96` `EGM2008` `PGM2000A` `PGM2004` `PGM2006` `PGM2007` `EPSG:7030` `not recorded`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verticalDatum
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verticalDatum-2025-06-12

minimumDepthInMeters

Title (Label)	Minimum Depth In Meters
Namespace	dwc
Table:	Event
Description	The lesser depth of a range of depth below a dwc:verticalDatum.
Comments	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`0` `100`
Type	number
Constraints	{"minimum": 0, "maximum": 11000}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/minimumDepthInMeters
dcterms:references	http://rs.tdwg.org/dwc/terms/version/minimumDepthInMeters-2023-06-28

maximumDepthInMeters

Title (Label)	Maximum Depth In Meters
Namespace	dwc
Table:	Event
Description	The greater depth of a range of depth below a dwc:verticalDatum.
Comments	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`0` `200`
Type	number
Constraints	{"minimum": 0, "maximum": 11000}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/maximumDepthInMeters
dcterms:references	http://rs.tdwg.org/dwc/terms/version/maximumDepthInMeters-2023-06-28

minimumDistanceAboveSurfaceInMeters

Title (Label)	Minimum Distance Above Surface In Meters
Namespace	dwc
Table:	Event
Description	The lesser distance in a range of distance from a reference surface in the vertical direction, in meters. Use positive values for locations above the surface, negative values for locations below. If depth measures are given, the reference surface is the location given by the depth, otherwise the reference surface is the location given by the elevation.
Comments	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`-1.5` (below the surface) `4.2` (above the surface) For a 1.5 meter sediment core from the bottom of a lake (at depth 20m) at 300m elevation: verbatimElevation: `300m` minimumElevationInMeters: `300`, maximumElevationInMeters: `300`, verbatimDepth: `20m`, minimumDepthInMeters: `20`, maximumDepthInMeters: `20`, minimumDistanceAboveSurfaceInMeters: `0`, maximumDistanceAboveSurfaceInMeters: `-1.5`.
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/minimumDistanceAboveSurfaceInMeters
dcterms:references	http://rs.tdwg.org/dwc/terms/version/minimumDistanceAboveSurfaceInMeters-2023-06-28

maximumDistanceAboveSurfaceInMeters

Title (Label)	Maximum Distance Above Surface In Meters
Namespace	dwc
Table:	Event
Description	The greater distance in a range of distance from a reference surface in the vertical direction, in meters. Use positive values for locations above the surface, negative values for locations below. If depth measures are given, the reference surface is the location given by the depth, otherwise the reference surface is the location given by the elevation.
Comments	See https://docs.gbif.org/georeferencing-best-practices/1.0/en/#img-depth-elevation-distance-above-surface.
Examples	`-1.5` (below the surface) `4.2` (above the surface) For a 1.5 meter sediment core from the bottom of a lake (at depth 20m) at 300m elevation: verbatimElevation: `300m` minimumElevationInMeters: `300`, maximumElevationInMeters: `300`, verbatimDepth: `20m`, minimumDepthInMeters: `20`, maximumDepthInMeters: `20`, minimumDistanceAboveSurfaceInMeters: `0`, maximumDistanceAboveSurfaceInMeters: `-1.5`.
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/maximumDistanceAboveSurfaceInMeters
dcterms:references	http://rs.tdwg.org/dwc/terms/version/maximumDistanceAboveSurfaceInMeters-2023-06-28

locationRemarks

Title (Label)	Location Remarks
Namespace	dwc
Table:	Event
Description	Comments or notes about the dcterms:Location.
Examples	`under water since 2005`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/locationRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/locationRemarks-2023-06-28

decimalLatitude

Title (Label)	Decimal Latitude
Namespace	dwc
Table:	Event
Description	A geographic latitude (in decimal degrees, using the spatial reference system given in dwc:geodeticDatum) of a dcterms:Location.
Comments	Positive values are north of the Equator, negative values are south of it. Valid values lie between -90 and 90, inclusive.
Examples	`-41.0983423`
Type	number
Constraints	{"minimum": -90, "maximum": 90}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/decimalLatitude
dcterms:references	http://rs.tdwg.org/dwc/terms/version/decimalLatitude-2023-06-28

decimalLongitude

Title (Label)	Decimal Longitude
Namespace	dwc
Table:	Event
Description	A geographic longitude (in decimal degrees, using the spatial reference system given in dwc:geodeticDatum) of a dcterms:Location.
Comments	Positive values are east of the Greenwich Meridian, negative values are west of it. Valid values lie between -180 and 180, inclusive.
Examples	`-121.1761111`
Type	number
Constraints	{"minimum": -180, "maximum": 180}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/decimalLongitude
dcterms:references	http://rs.tdwg.org/dwc/terms/version/decimalLongitude-2023-06-28

geodeticDatum

Title (Label)	Geodetic Datum
Namespace	dwc
Table:	Event
Description	The ellipsoid, geodetic datum, or spatial reference system (SRS) upon which the geographic coordinates given in dwc:decimalLatitude and dwc:decimalLongitude are based.
Comments	Recommended best practice is to use the EPSG code of the SRS, if known. Otherwise use a controlled vocabulary for the name or code of the geodetic datum, if known. Otherwise use a controlled vocabulary for the name or code of the ellipsoid, if known. If none of these is known, use the value `not recorded`. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for a string literal value.
Examples	`EPSG:4326` `WGS84` `NAD27` `Campo Inchauspe` `European 1950` `Clarke 1866` `not recorded`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geodeticDatum
dcterms:references	http://rs.tdwg.org/dwc/terms/version/geodeticDatum-2025-06-12

coordinateUncertaintyInMeters

Title (Label)	Coordinate Uncertainty In Meters
Namespace	dwc
Table:	Event
Description	A horizontal distance (in meters) from a given dwc:decimalLatitude and dwc:decimalLongitude describing the smallest circle containing the whole of the dcterms:Location. Zero is not a valid value for this term.
Comments	Leave the value empty if the uncertainty is unknown, cannot be estimated, or is not applicable (because there are no coordinates).
Examples	`30` (reasonable lower limit on or after 2000-05-01 of a GPS reading under good conditions if the actual precision was not recorded at the time) `100` (reasonable lower limit before 2000-05-01 of a GPS reading under good conditions if the actual precision was not recorded at the time) `71` (uncertainty for a UTM coordinate having 100 meter precision and a known spatial reference system)
Type	number
Constraints	{"minimum": 1, "maximum": 20037509}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/coordinateUncertaintyInMeters
dcterms:references	http://rs.tdwg.org/dwc/terms/version/coordinateUncertaintyInMeters-2023-06-28

coordinatePrecision

Title (Label)	Coordinate Precision
Namespace	dwc
Table:	Event
Description	A decimal representation of the precision of the coordinates given in the dwc:decimalLatitude and dwc:decimalLongitude.
Examples	`0.00001` (normal GPS limit for decimal degrees) `0.000278` (nearest second) `0.01667` (nearest minute) `1.0` (nearest degree)
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/coordinatePrecision
dcterms:references	http://rs.tdwg.org/dwc/terms/version/coordinatePrecision-2023-06-28

pointRadiusSpatialFit

Title (Label)	Point Radius Spatial Fit
Namespace	dwc
Table:	Event
Description	A ratio of the area of a point-radius (dwc:decimalLatitude, dwc:decimalLongitude, dwc:coordinateUncertaintyInMeters) to the area of a true (original, or most specific) spatial representation of a dcterms:Location.
Comments	Legal values are 0, greater than or equal to 1, or undefined. A value of 1 is an exact match or 100% overlap. A value of 0 should be used if the given point-radius does not completely contain the original representation. The pointRadiusSpatialFit is undefined (and should be left empty) if the original representation is any geometry without area (e.g., a point or polyline) and without uncertainty and the given georeference is not that same geometry (without uncertainty). If both the original and the given georeference are the same point, the pointRadiusSpatialFit is 1. Detailed explanations with graphical examples can be found in the Georeferencing Best Practices, Chapman and Wieczorek, 2020 (https://doi.org/10.15468/doc-gg7h-s853).
Examples	`0` `1` `1.5708`
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/pointRadiusSpatialFit
dcterms:references	http://rs.tdwg.org/dwc/terms/version/pointRadiusSpatialFit-2023-06-28

footprintWKT

Title (Label)	Footprint WKT
Namespace	dwc
Table:	Event
Description	A Well-Known Text (WKT) representation of the shape (footprint, geometry) that defines a dcterms:Location.
Comments	A dcterms:Location may have both a point-radius representation (see dwc:decimalLatitude) and a footprint representation, and they may differ from each other.
Examples	`POLYGON ((10 20, 11 20, 11 21, 10 21, 10 20))` (the one-degree bounding box with opposite corners at longitude=10, latitude=20 and longitude=11, latitude=21)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/footprintWKT
dcterms:references	http://rs.tdwg.org/dwc/terms/version/footprintWKT-2023-06-28

footprintSRS

Title (Label)	Footprint SRS
Namespace	dwc
Table:	Event
Description	The ellipsoid, geodetic datum, or spatial reference system (SRS) upon which the geometry given in dwc:footprintWKT is based.
Comments	Recommended best practice is to use the EPSG code of the SRS, if known. Otherwise use a controlled vocabulary for the name or code of the geodetic datum, if known. Otherwise use a controlled vocabulary for the name or code of the ellipsoid, if known. If none of these is known, use the value `not recorded`. It is also permitted to provide the SRS in Well-Known-Text, especially if no EPSG code provides the necessary values for the attributes of the SRS. Do not use this term to describe the SRS of the dwc:decimalLatitude and dwc:decimalLongitude, nor of any verbatim coordinates - use the dwc:geodeticDatum and dwc:verbatimSRS instead. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`EPSG:4326` `GEOGCS["GCS_WGS_1984", DATUM["D_WGS_1984", SPHEROID["WGS_1984",6378137,298.257223563]], PRIMEM["Greenwich",0], UNIT["Degree",0.0174532925199433]]` (WKT for the standard WGS84 Spatial Reference System EPSG:4326) `not recorded`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/footprintSRS
dcterms:references	http://rs.tdwg.org/dwc/terms/version/footprintSRS-2025-06-12

footprintSpatialFit

Title (Label)	Footprint Spatial Fit
Namespace	dwc
Table:	Event
Description	A ratio of the area of a footprint (dwc:footprintWKT) to the area of a true (original, or most specific) spatial representation of a dcterms:Location.
Comments	Legal values are 0, greater than or equal to 1, or undefined. A value of 1 is an exact match or 100% overlap. A value of 0 should be used if the given footprint does not completely contain the original representation. A dwc:footprintSpatialFit is undefined (and should be left empty) if the original representation is any geometry without area (e.g., a point or polyline) and without uncertainty and the given georeference is not that same geometry (without uncertainty). If both the original and the given georeference are the same point, a dwc:footprintSpatialFit is 1. Detailed explanations with graphical examples can be found in the Georeferencing Best Practices, Chapman and Wieczorek, 2020 (https://doi.org/10.15468/doc-gg7h-s853).
Examples	`0` `1` `1.5708`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/footprintSpatialFit
dcterms:references	http://rs.tdwg.org/dwc/terms/version/footprintSpatialFit-2023-06-28

georeferencedBy

Title (Label)	Georeferenced By
Namespace	dwc
Table:	Event
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for determining a georeference (spatial representation) for a dcterms:Location.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Brad Millen (ROM)` `Kristina Yamamoto \| Janet Fang`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferencedBy
dcterms:references	http://rs.tdwg.org/dwc/terms/version/georeferencedBy-2023-06-28

georeferencedByID

Title (Label)	Georeferenced By ID
Namespace	dwciri
Table:	Event
Description	An identifier for a dcterms:Agent responsible for determining a georeference for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/georeferencedBy
dcterms:references	http://rs.tdwg.org/dwc/iri/version/georeferencedBy-2023-06-28

georeferencedDate

Title (Label)	Georeferenced Date
Namespace	dwc
Table:	Event
Description	The date on which the dcterms:Location was georeferenced.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferencedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/georeferencedDate-2025-06-12

georeferenceProtocol

Title (Label)	Georeference Protocol
Namespace	dwc
Table:	Event
Description	A description or reference to a dwc:Protocol used to determine a spatial footprint, coordinates, and uncertainties.
Comments	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Georeferencing Quick Reference Guide (Zermoglio et al. 2020, https://doi.org/10.35035/e09p-h128)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferenceProtocol
dcterms:references	http://rs.tdwg.org/dwc/terms/version/georeferenceProtocol-2023-06-28

georeferenceProtocolID

Title (Label)	Georeference Protocol ID
Namespace	dwciri
Table:	Event
Description	An identifier for a dwc:Protocol used to determine a spatial footprint, coordinates, and uncertainties.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://doi.org/10.35035/e09p-h128`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/georeferenceProtocol
dcterms:references	http://rs.tdwg.org/dwc/iri/version/georeferenceProtocol-2015-03-27

georeferenceSources

Title (Label)	Georeference Sources
Namespace	dwc
Table:	Event
Description	A list (concatenated and separated) of maps, gazetteers, or other resources used to georeference a dcterms:Location, described specifically enough to allow anyone in the future to use the same resources.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`GeoLocate`, `GeoPick` `https://www.geonames.org/` `USGS 1:24000 Florence Montana Quad 1967 \| Terrametrics 2008 on Google Earth`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferenceSources
dcterms:references	http://rs.tdwg.org/dwc/terms/version/georeferenceSources-2023-06-28

georeferenceRemarks

Title (Label)	Georeference Remarks
Namespace	dwc
Table:	Event
Description	Comments or notes about the spatial description determination, explaining assumptions made in addition or opposition to the those formalized in the method referred to in dwc:georeferenceProtocol.
Examples	`Assumed distance by road (Hwy. 101)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/georeferenceRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/georeferenceRemarks-2025-06-12

preferredSpatialRepresentation

Title (Label)	Preferred Spatial Representation
Namespace	dwc
Table:	Event
Description	An indication of which spatial representation best represents the dcterms:Location.
Examples	`point-radius` `footprint`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/preferredSpatialRepresentation

geologicalContextID

Title (Label)	Geological Context ID
Namespace	dwc
Table:	Event
Description	An identifier for a dwc:GeologicalContext.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://opencontext.org/subjects/e54377f7-4452-4315-b676-40679b10c4d9`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalContextID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/geologicalContextID-2023-06-28

feedbackURL

Title (Label)	Feedback URL
Namespace	dwc
Table:	Event
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Comments	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL
dcterms:references	http://rs.tdwg.org/dwc/terms/version/feedbackURL-2025-06-12

informationWithheld

Title (Label)	Information Withheld
Namespace	dwc
Table:	Event
Description	Additional information that exists about a resource, but that is not shared publicly. Suggests that alternative data of higher quality may be available on request.
Comments	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`location information not given for endangered species` `collector identities withheld \| ask about tissue samples`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/informationWithheld
dcterms:references	http://rs.tdwg.org/dwc/terms/version/informationWithheld-2023-06-28

dataGeneralizations

Title (Label)	Data Generalizations
Namespace	dwc
Table:	Event
Description	Actions taken to make the shared data less specific or complete than in its original form. Suggests that alternative data of higher quality may be available on request.
Comments	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Coordinates generalized from original GPS coordinates to the nearest half degree grid cell.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dataGeneralizations
dcterms:references	http://rs.tdwg.org/dwc/terms/version/dataGeneralizations-2023-06-28

Chronometric Age

Identifier: http://rs.tdwg.org/dwc/dwc-dp/chronometric-age

Description: An approximation of temporal position (in the sense conveyed by https://www.w3.org/TR/owl-time/#time:TemporalPosition) that is supported by evidence.

Comments: The age of a dwc:MaterialEntity and how this age is known, whether by a dating assay, a relative association with dated material, or legacy collections information.

Examples:

`An age range associated with a specimen derived from an AMS dating assay applied to an oyster shell in the same stratum`

`An age range associated with a specimen derived from a ceramics analysis based on other materials found in the same stratum`

`A maximum age associated with a specimen derived from K-Ar dating applied to a proximal volcanic tuff found stratigraphically below the specimen`

`An age range of a specimen based on its biostratigraphic context`

`An age of a specimen based on what is reported in legacy collections data.`

dcterms:isVersionOf: http://rs.tdwg.org/chrono/terms/ChronometricAge

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
eventID	for	event	eventID	Yes
chronometricAgeProtocolID	followed	protocol	protocolID	No
chronometricAgeConversionProtocolID	followed	protocol	protocolID	No
materialDatedID	dated	material	materialEntityID	No
chronometricAgeDeterminedByID	determined by	agent	agentID	No

chronometricAgeID

Title (Label)	Chronometric Age ID
Namespace	chrono
Table:	Chronometric Age
Description	An identifier for a chrono:ChronometricAge.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://www.canadianarchaeology.ca/samples/70673`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeID-2025-06-12

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Chronometric Age
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

verbatimChronometricAge

Title (Label)	Verbatim Chronometric Age
Namespace	chrono
Table:	Chronometric Age
Description	A verbatim age for a dwc:Event, whether reported by a dating assay, associated references, or legacy information.
Comments	For example, this could be the radiocarbon age as given in an AMS dating report. This could also be simply what is reported as the age of a specimen in legacy collections data.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/verbatimChronometricAge
dcterms:references	http://rs.tdwg.org/chrono/terms/version/verbatimChronometricAge-2020-09-14

chronometricAgeProtocol

Title (Label)	Chronometric Age Protocol
Namespace	chrono
Table:	Chronometric Age
Description	A description of or reference to a dwc:Protocol used to determine a chrono:ChronometricAge.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeProtocol
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeProtocol-2025-06-12

chronometricAgeProtocolID

Title (Label)	Chronometric Age Protocol ID
Namespace	dwc
Table:	Chronometric Age
Description	An identifier for a dwc:Protocol used to determine a chrono:ChronometricAge.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/chronometricAgeProtocolID

uncalibratedChronometricAge

Title (Label)	Uncalibrated Chronometric Age
Namespace	chrono
Table:	Chronometric Age
Description	An output of a dating assay before it is calibrated into an age using a specific conversion protocol.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/uncalibratedChronometricAge
dcterms:references	http://rs.tdwg.org/chrono/terms/version/uncalibratedChronometricAge-2020-09-14

chronometricAgeConversionProtocol

Title (Label)	Chronometric Age Conversion Protocol
Namespace	chrono
Table:	Chronometric Age
Description	A description of or reference to a dwc:Protocol used to convert a chrono:uncalibratedChronometricAge into a chronometric age in years, as captured in the chrono:earliestChronometricAge, chrono:earliestChronometricAgeReferenceSystem, chrono:latestChronometricAge, and chrono:latestChronometricAgeReferenceSystem fields.
Comments	For example, calibration of conventional radiocarbon age or the currently accepted age range of a cultural or geological period.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeConversionProtocol
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeConversionProtocol-2025-06-12

chronometricAgeConversionProtocolID

Title (Label)	Chronometric Age Conversion Protocol ID
Namespace	dwc
Table:	Chronometric Age
Description	An identifier for a dwc:Protocol used to convert a chrono:uncalibratedChronometricAge into a chronometric age in years, as captured in the chrono:earliestChronometricAge, chrono:earliestChronometricAgeReferenceSystem, chrono:latestChronometricAge, and chrono:latestChronometricAgeReferenceSystem fields.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/chronometricAgeConversionProtocolID

earliestChronometricAge

Title (Label)	Earliest Chronometric Age
Namespace	chrono
Table:	Chronometric Age
Description	A maximum/earliest/oldest possible age of a dwc:MaterialEntity as determined by a dating method.
Comments	The expected unit for this field is years. This field, if populated, must have an associated chrono:earliestChronometricAgeReferenceSystem.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/earliestChronometricAge
dcterms:references	http://rs.tdwg.org/chrono/terms/version/earliestChronometricAge-2025-06-12

earliestChronometricAgeReferenceSystem

Title (Label)	Earliest Chronometric Age Reference System
Namespace	chrono
Table:	Chronometric Age
Description	A reference system associated with a chrono:earliestChronometricAge.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/earliestChronometricAgeReferenceSystem
dcterms:references	http://rs.tdwg.org/chrono/terms/version/earliestChronometricAgeReferenceSystem-2025-06-12

latestChronometricAge

Title (Label)	Latest Chronometric Age
Namespace	chrono
Table:	Chronometric Age
Description	A minimum/latest/youngest possible age of a dwc:MaterialEntity as determined by a dating method.
Comments	The expected unit for this field is years. This field, if populated, must have an associated latestChronometricAgeReferenceSystem.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/latestChronometricAge
dcterms:references	http://rs.tdwg.org/chrono/terms/version/latestChronometricAge-2025-06-12

latestChronometricAgeReferenceSystem

Title (Label)	Latest Chronometric Age Reference System
Namespace	chrono
Table:	Chronometric Age
Description	A reference system associated with a chrono:latestChronometricAge.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/latestChronometricAgeReferenceSystem
dcterms:references	http://rs.tdwg.org/chrono/terms/version/latestChronometricAgeReferenceSystem-2025-06-12

chronometricAgeUncertaintyInYears

Title (Label)	Chronometric Age Uncertainty In Years
Namespace	chrono
Table:	Chronometric Age
Description	A temporal uncertainty of a chrono:earliestChronometricAge and chrono:latestChronometricAge in years.
Comments	The expected unit for this field is years. The value in this field is number of years before and after the values given in the earliest and latest chronometric age fields within which the actual values are estimated to be.
Type	integer
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeUncertaintyInYears
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeUncertaintyInYears-2025-06-12

chronometricAgeUncertaintyMethod

Title (Label)	Chronometric Age Uncertainty Method
Namespace	chrono
Table:	Chronometric Age
Description	A method used to generate a value of chrono:ChronometricAgeUncertaintyInYears.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeUncertaintyMethod
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeUncertaintyMethod-2025-06-12

materialDated

Title (Label)	Material Dated
Namespace	chrono
Table:	Chronometric Age
Description	A description of a dwc:MaterialEntity on which a chrono:ChronometricAgeProtocol was actually performed, if known.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/materialDated
dcterms:references	http://rs.tdwg.org/chrono/terms/version/materialDated-2025-06-12

materialDatedID

Title (Label)	Material Dated ID
Namespace	chrono
Table:	Chronometric Age
Description	An identifier for a dwc:MaterialEntity on which a chrono:ChronometricAgeProtocol was performed, if applicable.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/materialDatedID
dcterms:references	http://rs.tdwg.org/chrono/terms/version/materialDatedID-2025-06-12

materialDatedRelationship

Title (Label)	Material Dated Relationship
Namespace	chrono
Table:	Chronometric Age
Description	A relationship of a chrono:materialDated to a dwc:MaterialEntity, from which a chrono:ChronometricAge of the related dwc:MaterialEntity and any related dwc:Occurrence is inferred.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/materialDatedRelationship
dcterms:references	http://rs.tdwg.org/chrono/terms/version/materialDatedRelationship-2025-06-12

chronometricAgeDeterminedBy

Title (Label)	Chronometric Age Determined By
Namespace	chrono
Table:	Chronometric Age
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for determining the chrono:ChronometricAge.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeDeterminedBy
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeDeterminedBy-2025-06-12

chronometricAgeDeterminedByID

Title (Label)	Chronometric Age Determined By ID
Namespace	dwc
Table:	Chronometric Age
Description	An identifier for a dcterms:Agent responsible for determining a chrono:ChronometricAge.
Comments	Recommended best practice is to provide a single identifier that disambiguates the details of the acting dcterms:Agent. If a list is used, the order of the agents on the list should not be assumed to convey any semantics. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/chronometricAgeDeterminedByID

chronometricAgeDeterminedDate

Title (Label)	Chronometric Age Determined Date
Namespace	chrono
Table:	Chronometric Age
Description	A date on which a chrono:ChronometricAge was determined.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeDeterminedDate
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeDeterminedDate-2025-06-12

chronometricAgeReferences

Title (Label)	Chronometric Age References
Namespace	chrono
Table:	Chronometric Age
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a chrono:ChronometricAge.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeReferences
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeReferences-2025-06-12

chronometricAgeRemarks

Title (Label)	Chronometric Age Remarks
Namespace	chrono
Table:	Chronometric Age
Description	Comments or notes about a chrono:ChronometricAge.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeRemarks
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeRemarks-2025-06-12

Geological Context

Identifier: http://rs.tdwg.org/dwc/dwc-dp/geological-context

Description: A set of geological designations, such as stratigraphy, that qualifies a dcterms:Location.

Examples:

`a particular lithostratigraphic layer`

`a specific chronostratigraphic unit`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/GeologicalContext

geologicalContextID

Title (Label)	Geological Context ID
Namespace	dwc
Table:	Geological Context
Description	An identifier for a dwc:GeologicalContext.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://opencontext.org/subjects/e54377f7-4452-4315-b676-40679b10c4d9`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalContextID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/geologicalContextID-2023-06-28

earliestEonOrLowestEonothem

Title (Label)	Earliest Eon Or Lowest Eonothem
Namespace	dwc
Table:	Geological Context
Description	The full name of the earliest possible geochronologic eon or lowest chronostratigraphic eonothem or the informal name (Precambrian) attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Phanerozoic` `Proterozoic`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/earliestEonOrLowestEonothem
dcterms:references	http://rs.tdwg.org/dwc/terms/version/earliestEonOrLowestEonothem-2023-09-13

latestEonOrHighestEonothem

Title (Label)	Latest Eon Or Highest Eonothem
Namespace	dwc
Table:	Geological Context
Description	The full name of the latest possible geochronologic eon or highest chronostratigraphic eonothem or the informal name (Precambrian) attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Phanerozoic` `Proterozoic`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/latestEonOrHighestEonothem
dcterms:references	http://rs.tdwg.org/dwc/terms/version/latestEonOrHighestEonothem-2025-06-12

earliestEraOrLowestErathem

Title (Label)	Earliest Era Or Lowest Erathem
Namespace	dwc
Table:	Geological Context
Description	The full name of the earliest possible geochronologic era or lowest chronostratigraphic erathem attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Cenozoic` `Mesozoic`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/earliestEraOrLowestErathem
dcterms:references	http://rs.tdwg.org/dwc/terms/version/earliestEraOrLowestErathem-2023-09-13

latestEraOrHighestErathem

Title (Label)	Latest Era Or Highest Erathem
Namespace	dwc
Table:	Geological Context
Description	The full name of the latest possible geochronologic era or highest chronostratigraphic erathem attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Cenozoic` `Mesozoic`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/latestEraOrHighestErathem
dcterms:references	http://rs.tdwg.org/dwc/terms/version/latestEraOrHighestErathem-2023-09-13

earliestPeriodOrLowestSystem

Title (Label)	Earliest Period Or Lowest System
Namespace	dwc
Table:	Geological Context
Description	The full name of the earliest possible geochronologic period or lowest chronostratigraphic system attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Neogene` `Tertiary` `Quaternary`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/earliestPeriodOrLowestSystem
dcterms:references	http://rs.tdwg.org/dwc/terms/version/earliestPeriodOrLowestSystem-2023-09-13

latestPeriodOrHighestSystem

Title (Label)	Latest Period Or Highest System
Namespace	dwc
Table:	Geological Context
Description	The full name of the latest possible geochronologic period or highest chronostratigraphic system attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Neogene` `Tertiary` `Quaternary`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/latestPeriodOrHighestSystem
dcterms:references	http://rs.tdwg.org/dwc/terms/version/latestPeriodOrHighestSystem-2023-09-13

earliestEpochOrLowestSeries

Title (Label)	Earliest Epoch Or Lowest Series
Namespace	dwc
Table:	Geological Context
Description	The full name of the earliest possible geochronologic epoch or lowest chronostratigraphic series attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Holocene` `Pleistocene` `Ibexian Series`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/earliestEpochOrLowestSeries
dcterms:references	http://rs.tdwg.org/dwc/terms/version/earliestEpochOrLowestSeries-2023-09-13

latestEpochOrHighestSeries

Title (Label)	Latest Epoch Or Highest Series
Namespace	dwc
Table:	Geological Context
Description	The full name of the latest possible geochronologic epoch or highest chronostratigraphic series attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Holocene` `Pleistocene` `Ibexian Series`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/latestEpochOrHighestSeries
dcterms:references	http://rs.tdwg.org/dwc/terms/version/latestEpochOrHighestSeries-2023-09-13

earliestAgeOrLowestStage

Title (Label)	Earliest Age Or Lowest Stage
Namespace	dwc
Table:	Geological Context
Description	The full name of the earliest possible geochronologic age or lowest chronostratigraphic stage attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Atlantic` `Boreal` `Skullrockian`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/earliestAgeOrLowestStage
dcterms:references	http://rs.tdwg.org/dwc/terms/version/earliestAgeOrLowestStage-2023-09-13

latestAgeOrHighestStage

Title (Label)	Latest Age Or Highest Stage
Namespace	dwc
Table:	Geological Context
Description	The full name of the latest possible geochronologic age or highest chronostratigraphic stage attributable to the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Atlantic` `Boreal` `Skullrockian`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/latestAgeOrHighestStage
dcterms:references	http://rs.tdwg.org/dwc/terms/version/latestAgeOrHighestStage-2023-09-13

lowestBiostratigraphicZone

Title (Label)	Lowest Biostratigraphic Zone
Namespace	dwc
Table:	Geological Context
Description	The full name of the lowest possible geological biostratigraphic zone of the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Maastrichtian`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/lowestBiostratigraphicZone
dcterms:references	http://rs.tdwg.org/dwc/terms/version/lowestBiostratigraphicZone-2023-09-13

highestBiostratigraphicZone

Title (Label)	Highest Biostratigraphic Zone
Namespace	dwc
Table:	Geological Context
Description	The full name of the highest possible geological biostratigraphic zone of the stratigraphic horizon from which the dwc:MaterialEntity was collected.
Examples	`Blancan`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/highestBiostratigraphicZone
dcterms:references	http://rs.tdwg.org/dwc/terms/version/highestBiostratigraphicZone-2023-09-13

lithostratigraphicTerms

Title (Label)	Lithostratigraphic Terms
Namespace	dwc
Table:	Geological Context
Description	The combination of all lithostratigraphic names for the rock from which the dwc:MaterialEntity was collected.
Examples	`Pleistocene-Weichselien`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/lithostratigraphicTerms
dcterms:references	http://rs.tdwg.org/dwc/terms/version/lithostratigraphicTerms-2025-06-12

group

Title (Label)	Group
Namespace	dwc
Table:	Geological Context
Description	The full name of the lithostratigraphic group from which the dwc:MaterialEntity was collected.
Examples	`Bathurst` `Lower Wealden`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/group
dcterms:references	http://rs.tdwg.org/dwc/terms/version/group-2023-09-13

formation

Title (Label)	Formation
Namespace	dwc
Table:	Geological Context
Description	The full name of the lithostratigraphic formation from which the dwc:MaterialEntity was collected.
Examples	`Notch Peak Formation` `House Limestone` `Fillmore Formation`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/formation
dcterms:references	http://rs.tdwg.org/dwc/terms/version/formation-2023-09-13

member

Title (Label)	Member
Namespace	dwc
Table:	Geological Context
Description	The full name of the lithostratigraphic member from which the dwc:MaterialEntity was collected.
Examples	`Lava Dam Member` `Hellnmaria Member`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/member
dcterms:references	http://rs.tdwg.org/dwc/terms/version/member-2023-09-13

bed

Title (Label)	Bed
Namespace	dwc
Table:	Geological Context
Description	The full name of the lithostratigraphic bed from which the dwc:MaterialEntity was collected.
Examples	`Harlem coal`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/bed
dcterms:references	http://rs.tdwg.org/dwc/terms/version/bed-2023-09-13

Occurrence

Identifier: http://rs.tdwg.org/dwc/dwc-dp/occurrence

Description: A state of a dwc:Organism in a dwc:Event.

Examples:

`a wolf pack on the shore of Kluane Lake in 1988`

`a virus in a plant leaf in the New York Botanical Garden at 15:29 on 2014-10-23`

`a fungus in Central Park in the summer of 1929`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/Occurrence

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
eventID	happened during	event	eventID	Yes
isPartOfOccurrenceID	part of	occurrence	occurrenceID	No
surveyTargetID	satisfied	survey-target	surveyTargetID	No
recordedByID	recorded by	agent	agentID	No
organismID	of an	organism	organismID	No
identifiedByID	identified by	agent	agentID	No

occurrenceID

Title (Label)	Occurrence ID
Namespace	dwc
Table:	Occurrence
Description	An identifier for a dwc:Occurrence.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`http://arctos.database.museum/guid/MSB:Mamm:233627` `000866d2-c177-4648-a200-ead4007051b9` `urn:catalog:UWBM:Bird:89776`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Occurrence
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

isPartOfOccurrenceID

Title (Label)	Is Part Of Occurrence ID
Namespace	dwc
Table:	Occurrence
Description	An identifier for a dwc:Occurrence of which this dwc:Occurrence is a part.
Comments	Used to define a subset of a dwc:Occurrence for which there may be distinct characteristics.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

surveyTargetID

Title (Label)	Survey Target ID
Namespace	dwc
Table:	Occurrence
Description	An identifier for a dwc:SurveyTarget.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyTargetID

recordedBy

Title (Label)	Recorded By
Namespace	dwc
Table:	Occurrence
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for recording a dwc:Occurrence.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`José E. Crespo` `Oliver P. Pearson \| Anita K. Pearson` (where the value in dwc:collectorNumber `OPP 7101` corresponds to the collector number for the specimen in the field catalog of Oliver P. Pearson)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/recordedBy
dcterms:references	http://rs.tdwg.org/dwc/terms/version/recordedBy-2023-06-28

recordedByID

Title (Label)	Recorded By ID
Namespace	dwc
Table:	Occurrence
Description	An identifier for a dcterms:Agent responsible for recording a dwc:Occurrence.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://orcid.org/0000-0002-1825-0097` `https://ror.org/00mh9zx15`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/recordedByID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/recordedByID-2023-06-28

organismQuantity

Title (Label)	Organism Quantity
Namespace	dwc
Table:	Occurrence
Description	A number or enumeration value for the quantity of dwc:Organisms.
Comments	A dwc:organismQuantity must have a corresponding dwc:organismQuantityType.
Examples	`27` (organismQuantity) with `individuals` (organismQuantityType) `12.5` (organismQuantity) with `% biomass` (organismQuantityType) `r` (organismQuantity) with `Braun-Blanquet Scale` (organismQuantityType) `many` (organismQuantity) with `individuals` (organismQuantityType)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismQuantity
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismQuantity-2023-06-28

organismQuantityType

Title (Label)	Organism Quantity Type
Namespace	dwc
Table:	Occurrence
Description	The type of quantification system used for the quantity of dwc:Organisms.
Comments	A dwc:organismQuantityType must have a corresponding dwc:organismQuantity. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`27` (organismQuantity) with `individuals` (organismQuantityType) `12.5` (organismQuantity) with `% biomass` (organismQuantityType) `r` (organismQuantity) with `Braun-Blanquet Scale` (organismQuantityType) `many` (organismQuantity) with `individuals` (organismQuantityType)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismQuantityType
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismQuantityType-2023-06-28

sex

Title (Label)	Sex
Namespace	dwc
Table:	Occurrence
Description	A sex of a dwc:Organism.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`female` `male` `hermaphrodite`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/sex
dcterms:references	http://rs.tdwg.org/dwc/terms/version/sex-2023-06-28

lifeStage

Title (Label)	Life Stage
Namespace	dwc
Table:	Occurrence
Description	An age class or life stage of a dwc:Organism.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`zygote` `larva` `juvenile` `adult` `seedling` `flowering` `fruiting`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/lifeStage
dcterms:references	http://rs.tdwg.org/dwc/terms/version/lifeStage-2023-06-28

reproductiveCondition

Title (Label)	Reproductive Condition
Namespace	dwc
Table:	Occurrence
Description	A reproductive condition of a dwc:Organism.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`non-reproductive` `pregnant` `in bloom` `fruit-bearing`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/reproductiveCondition
dcterms:references	http://rs.tdwg.org/dwc/terms/version/reproductiveCondition-2023-06-28

caste

Title (Label)	Caste
Namespace	dwc
Table:	Occurrence
Description	A social caste of a dwc:Organism.
Comments	Recommended best practice is to use a controlled vocabulary that aligns best with a dwc:Taxon. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`queen` `male alate` `intercaste` `minor worker` `soldier` `ergatoid`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/caste
dcterms:references	http://rs.tdwg.org/dwc/terms/version/caste-2023-06-28

behavior

Title (Label)	Behavior
Namespace	dwc
Table:	Occurrence
Description	A behavior shown by a dwc:Organism.
Comments	This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`roosting` `foraging` `running`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/behavior
dcterms:references	http://rs.tdwg.org/dwc/terms/version/behavior-2023-06-28

vitality

Title (Label)	Vitality
Namespace	dwc
Table:	Occurrence
Description	An indication of whether a dwc:Organism was alive or dead at the time of collection or observation.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`alive` `dead` `mixedLot` `uncertain` `notAssessed`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/vitality
dcterms:references	http://rs.tdwg.org/dwc/terms/version/vitality-2023-09-13

establishmentMeans

Title (Label)	Establishment Means
Namespace	dwc
Table:	Occurrence
Description	Statement about whether a dwc:Organism has been introduced to a given place and time through the direct or indirect activity of modern humans.
Comments	Recommended best practice is to use controlled value strings from the controlled vocabulary designated for use with this term, listed at http://rs.tdwg.org/dwc/doc/em/. For details, refer to https://doi.org/10.3897/biss.3.38084. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`native` `nativeReintroduced` `introduced` `introducedAssistedColonisation` `vagrant` `uncertain`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/establishmentMeans
dcterms:references	http://rs.tdwg.org/dwc/terms/version/establishmentMeans-2023-06-28

degreeOfEstablishment

Title (Label)	Degree Of Establishment
Namespace	dwc
Table:	Occurrence
Description	The degree to which a dwc:Organism survives, reproduces, and expands its range at the given place and time.
Comments	Recommended best practice is to use controlled value strings from the controlled vocabulary designated for use with this term, listed at http://rs.tdwg.org/dwc/doc/doe/. For details, refer to https://doi.org/10.3897/biss.3.38084. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`native` `captive` `cultivated` `released` `failing` `casual` `reproducing` `established` `colonising` `invasive` `widespreadInvasive`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/degreeOfEstablishment
dcterms:references	http://rs.tdwg.org/dwc/terms/version/degreeOfEstablishment-2023-06-28

pathway

Title (Label)	Pathway
Namespace	dwc
Table:	Occurrence
Description	The process by which a dwc:Organism came to be in a given place at a given time.
Comments	Recommended best practice is to use controlled value strings from the controlled vocabulary designated for use with this term, listed at http://rs.tdwg.org/dwc/doc/pw/. For details, refer to https://doi.org/10.3897/biss.3.38084. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`releasedForUse` `otherEscape` `transportContaminant` `transportStowaway` `corridor` `unaided`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/pathway
dcterms:references	http://rs.tdwg.org/dwc/terms/version/pathway-2023-06-28

substrate

Title (Label)	Substrate
Namespace	dwc
Table:	Occurrence
Description	A biotic or abiotic material to which an dwc:Organism is attached when a dwc:Event occurs.
Comments	This may or may not imply that the organism influenced/took resources from the substrate (such as during parasitization or decomposition). Declaration of a host-parasite relationship is better expressed as an organism interaction.
Examples	`stone wall` `decaying wood` `wooden board fence` `animal bones`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/substrate

occurrenceStatus

Title (Label)	Occurrence Status
Namespace	dwc
Table:	Occurrence
Description	A statement about the detection or non-detection of a dwc:Organism.
Comments	For dwc:Occurrences, the default vocabulary is recommended to consist of 'detected' and 'notDetected', but can be extended by implementers with good justification. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`detected` `notDetected`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceStatus
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceStatus-2023-06-28

occurrenceReferences

Title (Label)	Occurrence References
Namespace	dwc
Table:	Occurrence
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Occurrence.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Christopher J. Conroy, Jennifer L. Neuwald. 2008. Phylogeographic study of the California vole, Microtus californicus Journal of Mammalogy, 89(3):755-767.` `Steven R. Hoofer and Ronald A. Van Den Bussche. 2001. Phylogenetic Relationships of Plecotine Bats and Allies Based on Mitochondrial Ribosomal Sequences. Journal of Mammalogy 82(1):131-137. \| Walker, Faith M., Jeffrey T. Foster, Kevin P. Drees, Carol L. Chambers. 2014. Spotted bat (Euderma maculatum) microsatellite discovery using illumina sequencing. Conservation Genetics Resources.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/associatedReferences
dcterms:references	http://rs.tdwg.org/dwc/terms/version/associatedReferences-2023-06-28

informationWithheld

Title (Label)	Information Withheld
Namespace	dwc
Table:	Occurrence
Description	Additional information that exists about a resource, but that is not shared publicly.
Examples	`location information not given for endangered species` `collector identities withheld \| ask about tissue samples`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/informationWithheld
dcterms:references	http://rs.tdwg.org/dwc/terms/version/informationWithheld-2023-06-28

dataGeneralizations

Title (Label)	Data Generalizations
Namespace	dwc
Table:	Occurrence
Description	Actions taken to make the shared data less specific or complete than in its original form. Suggests that alternative data of higher quality may be available on request.
Examples	`Coordinates generalized from original GPS coordinates to the nearest half degree grid cell.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dataGeneralizations
dcterms:references	http://rs.tdwg.org/dwc/terms/version/dataGeneralizations-2023-06-28

occurrenceRemarks

Title (Label)	Occurrence Remarks
Namespace	dwc
Table:	Occurrence
Description	Comments or notes about the dwc:Occurrence.
Examples	`found dead on road`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceRemarks-2023-06-28

organismID

Title (Label)	Organism ID
Namespace	dwc
Table:	Occurrence
Description	An identifier for a dwc:Organism.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismID-2023-06-28

organismScope

Title (Label)	Organism Scope
Namespace	dwc
Table:	Occurrence
Description	A description of the type of a dwc:Organism instance.
Comments	Recommended best practice is to use a controlled vocabulary. Can be used to indicate whether a dwc:Organism instance represents a discrete organism or if it represents a particular type of aggregation.
Examples	`multicellular organism` `virus` `clone` `pack` `colony`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismScope
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismScope-2023-06-28

organismName

Title (Label)	Organism Name
Namespace	dwc
Table:	Occurrence
Description	A name or label assigned to a dwc:Organism.
Examples	`Huberta` `Boab Prison Tree` `J pod`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismName-2023-06-28

causeOfDeath

Title (Label)	Cause Of Death
Namespace	dwc
Table:	Occurrence
Description	An indication of the known or suspected cause of death of a dwc:Organism.
Comments	The cause may be due to natural causes (e.g., disease, predation), human-related activities (e.g., roadkill, pollution), or other environmental factors (e.g., extreme weather events).
Examples	`trapped` `poisoned` `starved` `drowned` `shot` `old age` `roadkill` `disease` `herbicide` `burned` `infanticide`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/causeOfDeath
dcterms:references	http://rs.tdwg.org/dwc/terms/version/causeOfDeath-2025-06-12

organismRemarks

Title (Label)	Organism Remarks
Namespace	dwc
Table:	Occurrence
Description	Comments or notes about a dwc:Organism.
Comments	`One of a litter of six`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismRemarks-2023-06-28

verbatimIdentification

Title (Label)	Verbatim Identification
Namespace	dwc
Table:	Occurrence
Description	A string representing a taxonomic identification as it appeared in the original record.
Examples	`Peromyscus sp.` `Ministrymon sp. nov. 1` `Anser anser × Branta canadensis` `Pachyporidae?`, `Potentilla × pantotricha Soják` `Aconitum pilipes × A. variegatum `Lepomis auritus x cyanellus`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimIdentification
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimIdentification-2023-06-28

identifiedBy

Title (Label)	Identified By
Namespace	dwc
Table:	Occurrence
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a taxonomic determination of a dwc:Organism.
Comments	When used in the context of a Survey, the subject consists of all of the dwc:Identifications related to the Event. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`James L. Patton` `Theodore Pappenfuss \| Robert Macey`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedBy
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identifiedBy-2023-06-28

identifiedByID

Title (Label)	Identified By ID
Namespace	dwciri
Table:	Occurrence
Description	An identifier for a dcterms:Agent responsible for making a taxonomic determination of a dwc:Organism.
Examples	`https://orcid.org/0000-0002-1825-0097` (for an individual) `https://orcid.org/0000-0002-1825-0097 \| https://orcid.org/0000-0002-1825-0098` (for a list of people)
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/identifiedBy
dcterms:references	http://rs.tdwg.org/dwc/iri/version/identifiedBy-2025-06-12

dateIdentified

Title (Label)	Date Identified
Namespace	dwc
Table:	Occurrence
Description	A date on which the subject was determined as representing a dwc:Taxon.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dateIdentified
dcterms:references	http://rs.tdwg.org/dwc/terms/version/dateIdentified-2025-06-12

identificationReferences

Title (Label)	Identification References
Namespace	dwc
Table:	Occurrence
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in a dwc:Identification.
Comments	When used in the context of a Survey, the subject consists of all of the dwc:Identifications related to the Survey. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Aves del Noroeste Patagonico. Christie et al. 2004.` `Stebbins, R. Field Guide to Western Reptiles and Amphibians. 3rd Edition. 2003. \| Irschick, D.J. and Shaffer, H.B. (1997). The polytypic species revisited: Morphological differentiation among tiger salamanders (Ambystoma tigrinum) (Amphibia: Caudata). Herpetologica, 53(1), 30-49.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationReferences
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identificationReferences-2025-06-12

identificationVerificationStatus

Title (Label)	Identification Verification Status
Namespace	dwc
Table:	Occurrence
Description	A categorical indicator of the extent to which a taxonomic determination has been verified to be correct.
Comments	Recommended best practice is to use a controlled vocabulary such as that used in HISPID and ABCD.
Examples	`0` (unverified in HISPID/ABCD).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationVerificationStatus
dcterms:references	http://rs.tdwg.org/dwc/iri/version/identificationVerificationStatus-2015-03-27

identificationRemarks

Title (Label)	Identification Remarks
Namespace	dwc
Table:	Occurrence
Description	Comments or notes about a dwc:Identification.
Examples	`Distinguished between Anthus correndera and Anthus hellmayri based on the comparative lengths of the uñas.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identificationRemarks-2023-06-28

taxonID

Title (Label)	Taxon ID
Namespace	dwc
Table:	Occurrence
Description	An identifier for a dwc:Taxon.
Comments	In DwC-DP, the taxonID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`8fa58e08-08de-4ac1-b69c-1235340b7001` `32567` `https://www.gbif.org/species/212`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/taxonID-2023-06-28

scientificNameID

Title (Label)	Scientific Name ID
Namespace	dwc
Table:	Occurrence
Description	An identifier for the nomenclatural (not taxonomic) details of a scientific name.
Comments	In DwC-DP, the taxonID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`urn:lsid:ipni.org:names:37829-1:1.3`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificNameID-2017-10-06

scientificName

Title (Label)	Scientific Name
Namespace	dwc
Table:	Occurrence
Description	A scientific name string, not including authorship, date or identification qualifiers.
Examples	`Coleoptera` (order) `Vespertilionidae` (family) `Manis` (genus) `Ctenomys sociabilis` (genus + specificEpithet) `Ambystoma tigrinum diaboli` (genus + specificEpithet + infraspecificEpithet) `Quercus agrifolia var. oxyadenia` (genus + specificEpithet + taxonRank + infraspecificEpithet) `×Agropogon littoralis` `Mentha ×smithiana` `Agrostis stolonifera L. × Polypogon monspeliensis`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificName-2023-06-28

scientificNameAuthorship

Title (Label)	Scientific Name Authorship
Namespace	dwc
Table:	Occurrence
Description	The authorship information for a dwc:scientificName formatted according to the conventions of the applicable dwc:nomenclaturalCode.
Examples	`(Torr.) J.T. Howell` `(Martinovský) Tzvelev` `(Györfi, 1952)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameAuthorship
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificNameAuthorship-2023-06-28

vernacularName

Title (Label)	Vernacular Name
Namespace	dwc
Table:	Occurrence
Description	A common or vernacular name.
Examples	`Andean Condor` `death cap` `rainbow trout` `Smoky Quartz` `Amethyst` `Agate` `Tiger's Eye`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/vernacularName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/vernacularName-2023-06-28

taxonRank

Title (Label)	Taxon Rank
Namespace	dwc
Table:	Occurrence
Description	A taxonomic rank of the most specific name in a dwc:scientificName.
Comments	Recommended best practice is to use a controlled vocabulary. The taxon ranks of algae, fungi and plants are defined in the International Code of Nomenclature for algae, fungi, and plants (Schenzhen Code Articles H3.2, H4.4 and H.3.1).
Examples	`subspecies` `varietas` `forma` `species` `genus` `nothogenus` `nothospecies` `nothosubspecies`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonRank
dcterms:references	http://rs.tdwg.org/dwc/terms/version/taxonRank-2023-06-28

externalClassificationSource

Title (Label)	External Classification Source
Namespace	dc
Table:	Occurrence
Description	A reference to a source outside the dataset where the identifying name, code, or taxon concept can be found.
Comments	The external source applies to whichever of dwc:taxonID, dwc:scientificNameID, minext:geoClassificationCode, minext:geoName, dwc:scientificName, or dwc:vernacularName is populated.
Examples	`http://www.catalogueoflife.org/data/taxon/` `https://avibase.bsc-eoc.org/` `Dana, J. D., Dana, E. S., & Gaines, R. V. (1997). Dana's new mineralogy: The system of mineralogy of James Dwight Dana and Edward Salisbury Dana.` `Strunz H, Nickel EH (2001) Strunz Mineralogical Tables, 9th Edition. Berlin and Stuttgart 870 pp.`
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

feedbackURL

Title (Label)	Feedback URL
Namespace	dwc
Table:	Occurrence
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Comments	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL
dcterms:references	http://rs.tdwg.org/dwc/terms/version/feedbackURL-2025-06-12

Organism

Identifier: http://rs.tdwg.org/dwc/dwc-dp/organism

Description: A particular organism or defined group of organisms considered to be taxonomically homogeneous.

Comments: Instances of the dwc:Organism class are intended to facilitate linking one or more dwc:Identification instances to one or more dwc:Occurrence instances. Therefore, things that are typically assigned scientific names (such as viruses, hybrids, and lichens) and aggregates whose dwc:Occurrences are typically recorded (such as packs, clones, and colonies) are included in the scope of this class.

Examples:

`a specific bird`

`a specific wolf pack`

`a specific instance of a bacterial culture`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/Organism

organismID

Title (Label)	Organism ID
Namespace	dwc
Table:	Organism
Description	An identifier for a dwc:Organism.
Comments	Recommended best practice is to use a persistent, globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismID-2023-06-28

organismScope

Title (Label)	Organism Scope
Namespace	dwc
Table:	Organism
Description	A description of the type of a dwc:Organism instance.
Comments	Recommended best practice is to use a controlled vocabulary. Can be used to indicate whether a dwc:Organism instance represents a discrete organism or if it represents a particular type of aggregation.
Examples	`multicellular organism` `virus` `clone` `pack` `colony`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismScope
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismScope-2023-06-28

organismName

Title (Label)	Organism Name
Namespace	dwc
Table:	Organism
Description	A name or label assigned to a dwc:Organism.
Examples	`Huberta` `Boab Prison Tree` `J pod`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismName-2023-06-28

causeOfDeath

Title (Label)	Cause Of Death
Namespace	dwc
Table:	Organism
Description	An indication of the known or suspected cause of death of a dwc:Organism.
Comments	The cause may be due to natural causes (e.g., disease, predation), human-related activities (e.g., roadkill, pollution), or other environmental factors (e.g., extreme weather events).
Examples	`trapped` `poisoned` `starved` `drowned` `shot` `old age` `roadkill` `disease` `herbicide` `burned` `infanticide`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/causeOfDeath
dcterms:references	http://rs.tdwg.org/dwc/terms/version/causeOfDeath-2025-06-12

associatedOrganisms

Title (Label)	Associated Organisms
Namespace	dwc
Table:	Organism
Description	A list (concatenated and separated) of identifiers of other dwc:Organisms and the associations of this dwc:Organism to each of them.
Comments	This term can be used to provide a list of associations to other dwc:Organisms. Note that the dwc:ResourceRelationship class is an alternative means of representing associations, and with more detail. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`"sibling of":"http://arctos.database.museum/guid/DMNS:Mamm:14171"` `"parent of":"http://arctos.database.museum/guid/MSB:Mamm:196208" \| "parent of":"http://arctos.database.museum/guid/MSB:Mamm:196523" \| "sibling of":"http://arctos.database.museum/guid/MSB:Mamm:142638"`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/associatedOrganisms
dcterms:references	http://rs.tdwg.org/dwc/terms/version/associatedOrganisms-2023-06-28

organismRemarks

Title (Label)	Organism Remarks
Namespace	dwc
Table:	Organism
Description	Comments or notes about a dwc:Organism.
Examples	`One of a litter of six`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismRemarks-2023-06-28

Organism Interaction

Identifier: http://rs.tdwg.org/dwc/dwc-dp/organism-interaction

Description: An interaction between two dwc:Organisms during a dwc:Event.

Comments: Supports only primary observed interactions, not habitual or derived taxon-level interactions. Pairwise interactions must be used to represent multi-organism interactions. When possible, typify the action rather than the state from which an action is inferred, with the actor as the subject dwc:Occurrence and the acted-upon as the related dwc:Occurrence. Only one direction of a two-way interaction is necessary, though both are permissible as distinct OrganismInteractions with distint subject dwc:Occurrences.

Examples:

`a bee visiting a flower`

`a Mallophora ruficauda hunting an Apis mellifera in flight`

`a viral infection in a plant`

`a female spider mating with a male spider`

`a lion cub nursing from its mother`

`a mosquito sucking blood from a chimpanzee's arm`

`a slug eating a fungus growing on decomposing stump (2 interactions)`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/OrganismInteraction

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
eventID	happened during	event	eventID	Yes
subjectOccurrenceID	by	occurrence	occurrenceID	Yes
relatedOccurrenceID	with	occurrence	occurrenceID	No

organismInteractionID

Title (Label)	Organism Interaction ID
Namespace	dwc
Table:	Organism Interaction
Description	An identifier for a dwc:OrganismInteraction.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/organismInteractionID

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Organism Interaction
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

organismInteractionDescription

Title (Label)	Organism Interaction Description
Namespace	dwc
Table:	Organism Interaction
Description	A verbatim description of a dwc:OrganismInteraction.
Examples	`Mallophora ruficauda capturing an Apis mellifera worker in flight.`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/organismInteractionDescription

subjectOccurrenceID

Title (Label)	Subject Occurrence ID
Namespace	dwc
Table:	Organism Interaction
Description	An identifier for a subject dwc:Occurrence in a dwc:OrganismInteraction.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

subjectOrganismPart

Title (Label)	Subject Organism Part
Namespace	dwc
Table:	Organism Interaction
Description	A part of a subject dwc:Organism involved in a dwc:OrganismInteraction.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`leaf` `stomach` `stamen` `leg`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/subjectOrganismPart

organismInteractionType

Title (Label)	Organism Interaction Type
Namespace	dwc
Table:	Organism Interaction
Description	A category that best matches the nature of a dwc:OrganismInteraction.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`visited flower of` `pollinated by` `parasitoid of` `mated with` `was attached to`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/organismInteractionType

relatedOccurrenceID

Title (Label)	Related Occurrence ID
Namespace	dwc
Table:	Organism Interaction
Description	An identifier for a related dwc:Occurrence in a dwc:OrganismInteraction.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

externalRelatedOccurrenceID

Title (Label)	External Related Occurrence ID
Namespace	dwc
Table:	Organism Interaction
Description	An identifier for the related dwc:Occurrence (the object) of a dwc:ResourceRelationship that is not within the same dataset.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

externalRelatedOccurrenceSource

Title (Label)	External Related Occurrence Source
Namespace	dc
Table:	Organism Interaction
Description	A reference to a source outside the dataset where the related dwc:Occurrence record can be found.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relatedOrganismPart

Title (Label)	Related Organism Part
Namespace	dwc
Table:	Organism Interaction
Description	A part of a object dwc:Organism involved in a dwc:OrganismInteraction.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`leaf` `stomach` `stamen` `leg`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/relatedOrganismPart

feedbackURL

Title (Label)	Feedback URL
Namespace	dwc
Table:	Organism Interaction
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Comments	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL
dcterms:references	http://rs.tdwg.org/dwc/terms/version/feedbackURL-2025-06-12

Survey

Identifier: http://rs.tdwg.org/dwc/dwc-dp/survey

Description: A biotic survey or inventory.

Comments: This class includes properties found in the Humboldt Extension to Darwin Core (eco: namespace), except for the target scope terms, which can be accommodated in eco:SurveyTarget.

Examples:

`a botanical survey of a protected area to assess native and invasive plant species`

`a wetland vegetation mapping`

`a camera trap deployment in a rainforest to monitor large mammals`

`a frog call survey in wetlands across breeding seasons`

`a coverboard survey for reptiles in forested environments`

`a pollinator survey in an agricultural landscape`

`a macroinvertebrate sampling in a freshwater stream to assess water quality`

`a habitat- or ecosystem-level survey (e.g., coral reef health assessment, forest biodiversity assessment)`

`an environmental impact assessment (e.g., pre-construction biological baseline survey for a wind farm project)`

dcterms:isVersionOf: http://rs.tdwg.org/eco/terms/Survey

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
eventID	happened during	event	eventID	Yes
identifiedByID	identifications by	agent	agentID	No
samplingPerformedByID	sampling performed by	agent	agentID	No
samplingEffortProtocolID	followed	protocol	protocolID	No

surveyID

Title (Label)	Survey ID
Namespace	dwc
Table:	Survey
Description	An identifier for a dwc:Survey.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyID

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Survey
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

siteCount

Title (Label)	Site Count
Namespace	eco
Table:	Survey
Description	Total number of individual sites surveyed during a dwc:Event.
Comments	Site refers to the location at which observations are made or samples/measurements are taken. The site can be at any level of hierarchy.
Examples	`1` `15`
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/siteCount
dcterms:references	http://rs.tdwg.org/eco/terms/version/siteCount-2024-02-28

siteNestingDescription

Title (Label)	Site Nesting Description
Namespace	eco
Table:	Survey
Description	Textual description of a hierarchical sampling design.
Comments	Site refers to the location at which observations are made or samples/measurements are taken. The site can be at any level of hierarchy.
Examples	`5 sampling sites of 3-5 plots each`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/siteNestingDescription
dcterms:references	http://rs.tdwg.org/eco/terms/version/siteNestingDescription-2024-02-28

verbatimSiteDescriptions

Title (Label)	Verbatim Site Descriptions
Namespace	eco
Table:	Survey
Description	Original textual description of site(s).
Comments	Site refers to the location at which observations are made or samples/measurements are taken. The site can be at any level of hierarchy. Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `).
Examples	`Wet flatwoods \| Wet depression surrounded by mesic longleaf pine flatwoods \| Ground cover of thick Andropogon spp., Sporobolus floridanus, Vaccinium spp, Rhynchospora spp., Centella erecta, Panicum rigidulum.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/verbatimSiteDescriptions
dcterms:references	http://rs.tdwg.org/eco/terms/version/verbatimSiteDescriptions-2024-02-28

verbatimSiteNames

Title (Label)	Verbatim Site Names
Namespace	eco
Table:	Survey
Description	A list (concatenated and separated) of original site names.
Comments	Site refers to the location at which observations are made or samples/measurements are taken. The site can be at any level of hierarchy. Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `).
Examples	`East Coastal Fringe \| St. Marks Wildlife Management Area` `S1 \| S2 \| C1 \| C2 \| R14 \| R22 \| W1`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/verbatimSiteNames
dcterms:references	http://rs.tdwg.org/eco/terms/version/verbatimSiteNames-2024-02-28

geospatialScopeAreaValue

Title (Label)	Geospatial Scope Area Value
Namespace	eco
Table:	Survey
Description	The numeric value for the total area of a geospatial scope of a dwc:Event.
Comments	Geospatial scope refers to a dwc:Event location reported using the terms organized in Darwin Core under dcterms:Location. This area is always greater than or equal to the eco:totalAreaSampledValue. An eco:geospatialScopeAreaValue must have a corresponding eco:geospatialScopeAreaUnit.
Examples	`25`
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/geospatialScopeAreaValue
dcterms:references	http://rs.tdwg.org/eco/terms/version/geospatialScopeAreaValue-2024-02-28

geospatialScopeAreaUnit

Title (Label)	Geospatial Scope Area Unit
Namespace	eco
Table:	Survey
Description	Units associated with a value in eco:geospatialScopeAreaValue.
Comments	Recommended best practice is to use a controlled vocabulary. For units containing exponents, use characters from the Unicode Latin-1 Supplement character set (hex 00B2 for squared and 00B3 for cubed). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`km²`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/geospatialScopeAreaUnit
dcterms:references	http://rs.tdwg.org/eco/terms/version/geospatialScopeAreaUnit-2025-07-10

totalAreaSampledUnit

Title (Label)	Total Area Sampled Unit
Namespace	eco
Table:	Survey
Description	Units associated with a value in eco:totalAreaSampledValue.
Comments	Recommended best practice is to use a controlled vocabulary. For units containing exponents, use characters from the Unicode Latin-1 Supplement character set (hex 00B2 for squared and 00B3 for cubed). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`0.8`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/totalAreaSampledUnit
dcterms:references	http://rs.tdwg.org/eco/terms/version/totalAreaSampledUnit-2025-07-10

totalAreaSampledValue

Title (Label)	Total Area Sampled Value
Namespace	eco
Table:	Survey
Description	The numeric value for the total area dwc:Surveyed during a dwc:Event.
Comments	This area is always less than or equal to the eco:geospatialScopeAreaValue. An eco:totalAreaSampledValue must have a corresponding eco:totalAreaSampledUnit.
Examples	`km²`
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/totalAreaSampledValue
dcterms:references	http://rs.tdwg.org/eco/terms/version/totalAreaSampledValue-2024-02-28

reportedExtremeConditions

Title (Label)	Reported Extreme Conditions
Namespace	eco
Table:	Survey
Description	A description of any extreme weather or environmental conditions that may have affected a dwc:Event.
Examples	`{"minimumTemperatureInDegreesFahrenheit": 18, "maximumTemperatureInDegreesFahrenheit": 32}`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/reportedExtremeConditions
dcterms:references	http://rs.tdwg.org/eco/terms/version/reportedExtremeConditions-2024-02-28

reportedWeather

Title (Label)	Reported Weather
Namespace	eco
Table:	Survey
Description	A list of weather or climatic conditions present during a dwc:Event.
Comments	Recommended best practice is to use a key:value encoding schema for a data interchange format such as JSON.
Examples	`flooding during week 3 of surveys` `rockslide at site 2`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/reportedWeather
dcterms:references	http://rs.tdwg.org/eco/terms/version/reportedWeather-2024-02-28

eventDurationValue

Title (Label)	Event Duration Value
Namespace	eco
Table:	Survey
Description	The numeric value for the duration of a dwc:Event.
Comments	`An eco:eventDurationValue must have a corresponding eco:eventDurationUnit.`
Examples	`1` `30`
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/eventDurationValue
dcterms:references	http://rs.tdwg.org/eco/terms/version/eventDurationValue-2024-02-28

eventDurationUnit

Title (Label)	Event Duration Unit
Namespace	eco
Table:	Survey
Description	Units associated with a value in eco:eventDurationValue.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`minutes` `hours` `days` `months` `years`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/eventDurationUnit
dcterms:references	http://rs.tdwg.org/eco/terms/version/eventDurationUnit-2025-07-10

taxonCompletenessReported

Title (Label)	Taxon Completeness Reported
Namespace	eco
Table:	Survey
Description	Statement about whether the taxonomic completeness of a dwc:Event was assessed.
Comments	This term is meant to alert users that the inventory was conducted in such a way that all of the target taxa (the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope) should have been detectable if they were present during a dwc:Event. This term can provide data users with a qualitative measure of how comprehensively an area has been surveyed, which assists in interpreting species populations, areas of occupancy, inferring species absences, etc. This term is only relevant if a dwc:Event used restricted search or open search methods. If taxonomic completeness was assessed, the methods used or an explanation of the basis of the completeness should be stated in eco:taxonCompletenessProtocols. Recommended best practice is to use controlled value strings from the controlled vocabulary designated for use with this term, listed at http://rs.tdwg.org/dwc/doc/tcr/. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`notReported` `reportedComplete` `reportedIncomplete`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/taxonCompletenessReported
dcterms:references	http://rs.tdwg.org/eco/terms/version/taxonCompletenessReported-2025-07-10

taxonCompletenessProtocols

Title (Label)	Taxon Completeness Protocols
Namespace	eco
Table:	Survey
Description	A description of or reference to the dwc:Protocols used to determine eco:taxonCompletenessReported.
Comments	This term allows users to determine how comprehensively an area has been sampled. Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`census \| based on sampling effort` `based on species accumulation curves`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/taxonCompletenessProtocols
dcterms:references	http://rs.tdwg.org/eco/terms/version/taxonCompletenessProtocols-2025-07-10

isAbsenceReported

Title (Label)	Is Absence Reported
Namespace	eco
Table:	Survey
Description	Taxonomic absences were reported.
Comments	Absences can be reported at any taxonomic level.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isAbsenceReported
dcterms:references	http://rs.tdwg.org/eco/terms/version/isAbsenceReported-2024-02-28

absentTaxa

Title (Label)	Absent Taxa
Namespace	eco
Table:	Survey
Description	A list (concatenated and separated) of taxa reported absent during a dwc:Event.
Comments	Absences can be reported at any taxonomic level. Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Parabuteo unicinctus \| Geranoaetus melanoleucus` `Cetoniinae \| Aclopinae \| Cyclocephala modesta`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/absentTaxa
dcterms:references	http://rs.tdwg.org/eco/terms/version/absentTaxa-2025-07-10

hasNonTargetTaxa

Title (Label)	Has Non Target Taxa
Namespace	eco
Table:	Survey
Description	One or more dwc:Organisms of taxa outside the target taxonomic scope (the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope) were detected and reported for this dwc:Event.
Comments	This term is meant to alert users to the presence of non-target taxa (in some disciplines called “bycatch”) reported in this dwc:Event. This term is relevant only if a target taxonomic scope is declared. Taxonomic scope is based on the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope. Examination of the taxonomic scope is needed in order to identify the non-target taxa. It should be possible to confirm the expectations by investigating a dwc:Occurrences in this dwc:Event and in its child dwc:Events (if available) or by exploring eco:nonTargetTaxa for this dwc:Event (if populated). The value of this term should be 'true' if dwc:Occurrences of taxa outside the taxonomic scope as defined at the time of a dwc:Event are reported, otherwise the value of this term should be 'false'.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/hasNonTargetTaxa
dcterms:references	http://rs.tdwg.org/eco/terms/version/hasNonTargetTaxa-2024-02-28

nonTargetTaxa

Title (Label)	Non Target Taxa
Namespace	eco
Table:	Survey
Description	A list (concatenated and separated) of taxa reported during a dwc:Event that are outside of the target taxonomic scope (the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope).
Comments	This term is meant to allow the full list of taxa that are considered outside of the taxonomic scope and yet were reported in the dataset to be shared. This term is relevant only if a target taxonomic scope is declared and eco:hasNonTargetTaxa is ‘true’. Taxonomic scope is based on the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope. Non-target taxa (in some disciplines called “bycatch”) can be reported at any taxonomic level. Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Parabuteo unicinctus \| Geranoaetus melanoleucus` `Cetoniinae \| Aclopinae \| Cyclocephala modesta`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/nonTargetTaxa
dcterms:references	http://rs.tdwg.org/eco/terms/version/nonTargetTaxa-2025-07-10

areNonTargetTaxaFullyReported

Title (Label)	Are Non Target Taxa Fully Reported
Namespace	eco
Table:	Survey
Description	Every dwc:Organism that was outside of the target taxonomic scope (the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope) and detected during a dwc:Event, and that was detectable using the given protocol (given in eco:protocolDescriptions and dwc:samplingProtocol), was reported.
Comments	This term is meant to inform a user of the data whether there were non-target taxa that were detected, but left unreported. This term is only relevant if a dwc:Event used restricted search or open search methods and if a target taxonomic scope is declared. Taxonomic scope is based on the combination of eco:targetTaxonomicScope and eco:excludedTaxonomicScope. Within dwc:Events that used either a restricted search or an open search method and declared a taxonomic scope, if all dwc:Organisms that are not included within the target taxonomic scope and that were detected during a dwc:Event were reported, the value of this term should be 'true', otherwise the value of this term should be ‘false'.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/areNonTargetTaxaFullyReported
dcterms:references	http://rs.tdwg.org/eco/terms/version/areNonTargetTaxaFullyReported-2025-06-12

hasNonTargetOrganisms

Title (Label)	Has Non Target Organisms
Namespace	eco
Table:	Survey
Description	One or more dwc:Organisms outside the target organismal scopes (eco:targetDegreeOfEstablishmentScope, eco:targetGrowthFormScope, and eco:targetLifeStageScope) were detected and reported for this dwc:Event.
Comments	This term is meant to alert users to the presence of non-target organisms (in some disciplines called “bycatch”) reported in this dwc:Event. This term is relevant only if a target organismal scope is declared. Organismal scope is based on the combination of all of the following terms: eco:targetLifeStageScope, eco:excludedLifeStageScope, eco:targetDegreeOfEstablishmentScope, eco:excludedDegreeOfEstablishmentScope, eco:targetGrowthFormScope, and eco:excludedGrowthFormScope. Examination of the organismal scope is needed in order to identify the non-target dwc:Organisms. It should be possible to confirm the expectations by investigating a dwc:Occurrences in this dwc:Event and in its child dwc:Events (if available). The value of this term should be 'true' if dwc:Occurrences of dwc:Organisms outside the organismal scope(s) as defined at the time of a dwc:Event are reported, otherwise the value of this term should be 'false'.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/hasNonTargetOrganisms
dcterms:references	http://rs.tdwg.org/eco/terms/version/hasNonTargetOrganisms-2024-02-28

verbatimTargetScope

Title (Label)	Verbatim Target Scope
Namespace	eco
Table:	Survey
Description	A verbatim original description of a dwc:Event scope.
Comments	Recommended best practice is first to populate explicit scope terms to the fullest extent possible (e.g., eco:targetTaxonomicScope). It is not recommended to use this term in assessing absence or completeness.
Examples	`small mammals` `freshwater macroinvertebrates` `dead animals, ground-living insects`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/verbatimTargetScope
dcterms:references	http://rs.tdwg.org/eco/terms/version/verbatimTargetScope-2024-02-28

identifiedBy

Title (Label)	Identified By
Namespace	dwc
Table:	Survey
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a taxonomic determination of a dwc:Organism.
Comments	When used in the context of a Survey, the subject consists of all of the dwc:Identifications related to the Event. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`James L. Patton` `Theodore Pappenfuss \| Robert Macey`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedBy
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identifiedBy-2025-06-12

identifiedByID

Title (Label)	Identified By ID
Namespace	dwciri
Table:	Survey
Description	An identifier for a dcterms:Agent responsible for making a taxonomic determination of a dwc:Organism.
Comments	When used in the context of a Survey, the subject consists of all of the dwc:Identifications related to the Survey. Recommended best practice is to provide a single identifier that disambiguates the details of the identifying dcterms:Agent. If a list is used, the order of the identifiers on the list should not be assumed to convey any semantics. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/identifiedBy
dcterms:references	http://rs.tdwg.org/dwc/iri/version/identifiedBy-2025-06-12

identificationReferences

Title (Label)	Identification References
Namespace	dwc
Table:	Survey
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in a dwc:Identification.
Comments	When used in the context of a Survey, the subject consists of all of the dwc:Identifications related to the Survey. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Aves del Noroeste Patagonico. Christie et al. 2004.` `Stebbins, R. Field Guide to Western Reptiles and Amphibians. 3rd Edition. 2003. \| Irschick, D.J. and Shaffer, H.B. (1997). The polytypic species revisited: Morphological differentiation among tiger salamanders (Ambystoma tigrinum) (Amphibia: Caudata). Herpetologica, 53(1), 30-49.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationReferences
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identificationReferences-2025-06-12

compilationTypes

Title (Label)	Compilation Types
Namespace	eco
Table:	Survey
Description	A statement specifying whether data reported are derived from sampling events, ancillary data compiled from other sources, or a combination of both.
Comments	This term is only relevant if a dwc:Event is an inventory. Recommended best practice is to use a controlled vocabulary. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`samplingEvents` `compilationOfExistingSourcesAndSamplingEvents` `compilationOfExistingSources` `compilationOfExistingSourcesAndSamplingEvents \| compilationOfExistingSources`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/compilationTypes
dcterms:references	http://rs.tdwg.org/eco/terms/version/compilationTypes-2025-07-10

compilationSourceTypes

Title (Label)	Compilation Source Types
Namespace	eco
Table:	Survey
Description	The types of data sources contributing to the compilation reported.
Comments	This term is only relevant if a dwc:Event is a compilation in which one or more types of data sources were used. Recommended best practice is to use a controlled vocabulary and separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`museumSpecimens` `literature` `expertKnowledge \| localKnowledge`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/compilationSourceTypes
dcterms:references	http://rs.tdwg.org/eco/terms/version/compilationSourceTypes-2025-07-10

inventoryTypes

Title (Label)	Inventory Types
Namespace	eco
Table:	Survey
Description	The types of search processes used to conduct the inventory.
Comments	This term is only relevant if a dwc:Event represents an inventory. Recommended best practice is to use a controlled vocabulary. Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`restrictedSearch` `openSearch` `opportunisticSearch` `adventitious` `compilation` `openSearch \| opportunisticSearch`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/inventoryTypes
dcterms:references	http://rs.tdwg.org/eco/terms/version/inventoryTypes-2025-07-10

protocolNames

Title (Label)	Protocol Names
Namespace	eco
Table:	Survey
Description	Categorical descriptive names for the dwc:Protocols used during a dwc:Event.
Comments	Recommended best practice is to use a controlled vocabulary and separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`boxTrapping` `floraInventory` `boxTrapping \| funnelTrapping`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/protocolNames
dcterms:references	http://rs.tdwg.org/eco/terms/version/protocolNames-2025-07-10

protocolDescriptions

Title (Label)	Protocol Descriptions
Namespace	eco
Table:	Survey
Description	A detailed description of the dwc:Protocols used during a dwc:Survey.
Comments	This description should be associated with protocols provided in eco:protocolNames. The description may include deviations from a protocol referred to in eco:protocolReferences. Recommended good practice is to provide information about instruments used, calibration, etc. Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `).
Examples	`Three conventional harp traps (3.2m ht x 2.2m w) were established in flight path zones for a period of 4 hrs at dawn and dusk for a total of 10 trap nights. Traps were visited on an hourly basis during each deployment period and the trap catch recorded for species, size, weight, sex, age and maternal status.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/protocolDescriptions
dcterms:references	http://rs.tdwg.org/eco/terms/version/protocolDescriptions-2024-02-28

protocolReferences

Title (Label)	Protocol References
Namespace	eco
Table:	Survey
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in a dwc:Protocol.
Comments	Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `).
Examples	`Penguins from space: faecal stains reveal the location of emperor penguin colonies, https://doi.org/10.1111/j.1466-8238.2009.00467.x`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/protocolReferences
dcterms:references	http://rs.tdwg.org/eco/terms/version/protocolReferences-2024-02-28

isAbundanceReported

Title (Label)	Is Abundance Reported
Namespace	eco
Table:	Survey
Description	The number of dwc:Organisms collected or observed was reported.
Comments	Typically the abundance values would be reported in a dwc:organismQuantity and dwc:organismQuantityType terms for the child dwc:Occurrence records for this dwc:Event.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isAbundanceReported
dcterms:references	http://rs.tdwg.org/eco/terms/version/isAbundanceReported-2024-02-28

isAbundanceCapReported

Title (Label)	Is Abundance Cap Reported
Namespace	eco
Table:	Survey
Description	A maximum number of dwc:Organisms was reported, as specified or restricted by the dwc:Protocol used.
Comments	Values of abundance cap should be captured under the term eco:abundanceCap.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isAbundanceCapReported
dcterms:references	http://rs.tdwg.org/eco/terms/version/isAbundanceCapReported-2024-02-28

abundanceCap

Title (Label)	Abundance Cap
Namespace	eco
Table:	Survey
Description	The reported maximum number of dwc:Organisms.
Examples	`300 `700`
Type	integer
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/abundanceCap
dcterms:references	http://rs.tdwg.org/eco/terms/version/abundanceCap-2024-02-28

isVegetationCoverReported

Title (Label)	Is Vegetation Cover Reported
Namespace	eco
Table:	Survey
Description	A vegetation cover metric was reported.
Comments	Typically values or descriptions of vegetation cover would be captured under the term eco:verbatimSiteDescriptions.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isVegetationCoverReported
dcterms:references	http://rs.tdwg.org/eco/terms/version/isVegetationCoverReported-2024-02-28

isLeastSpecificTargetCategoryQuantityInclusive

Title (Label)	Is Least Specific Target Category Quantity Inclusive
Namespace	eco
Table:	Survey
Description	The total detected quantity for a dwc:Taxon (including subcategories thereof) in a dwc:Event is given explicitly in a single record (dwc:organismQuantity value) for that dwc:Taxon.
Comments	Recommended values are 'true' and 'false'. This term is only relevant if dwc:organismQuantity is a number. For a detailed explanation, see http://rs.tdwg.org/dwc/doc/inclusive/.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isLeastSpecificTargetCategoryQuantityInclusive
dcterms:references	http://rs.tdwg.org/eco/terms/version/isLeastSpecificTargetCategoryQuantityInclusive-2025-06-12

hasVouchers

Title (Label)	Has Vouchers
Namespace	eco
Table:	Survey
Description	Specimen vouchers were collected during a dwc:Event.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/hasVouchers
dcterms:references	http://rs.tdwg.org/eco/terms/version/hasVouchers-2024-02-28

voucherInstitutions

Title (Label)	Voucher Institutions
Namespace	eco
Table:	Survey
Description	A list (concatenated and separated) of the names or acronyms of the institutions where vouchers collected during a dwc:Event were deposited.
Comments	Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `).
Examples	`FMNH` `AMNH \| MVZ` `Nairobi National Museum`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/voucherInstitutions
dcterms:references	http://rs.tdwg.org/eco/terms/version/voucherInstitutions-2024-02-28

hasMaterialSamples

Title (Label)	Has Material Samples
Namespace	eco
Table:	Survey
Description	Material samples were collected during a dwc:Event.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/hasMaterialSamples
dcterms:references	http://rs.tdwg.org/eco/terms/version/hasMaterialSamples-2024-02-28

materialSampleTypes

Title (Label)	Material Sample Types
Namespace	eco
Table:	Survey
Description	A list (concatenated and separated) of material sample types collected during a dwc:Event.
Comments	Recommended best practice is to use a controlled vocabulary and separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`wholeOrganism` `skeleton` `tissue \| blood \| fecal \| stomachContent`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/materialSampleTypes
dcterms:references	http://rs.tdwg.org/eco/terms/version/materialSampleTypes-2025-07-10

sampleSizeValue

Title (Label)	Sample Size Value
Namespace	dwc
Table:	Survey
Description	A numeric value for a measurement of the size (time duration, length, area, or volume) of a sample in a sampling dwc:Event.
Comments	A dwc:sampleSizeValue must have a corresponding dwc:sampleSizeUnit.
Examples	`5` (sampleSizeValue) with `metre` (sampleSizeUnit)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/sampleSizeValue
dcterms:references	http://rs.tdwg.org/dwc/terms/version/sampleSizeValue-2023-06-28

sampleSizeUnit

Title (Label)	Sample Size Unit
Namespace	dwc
Table:	Survey
Description	The unit of measurement of the size (time duration, length, area, or volume) of a sample in a sampling dwc:Event.
Comments	A dwc:sampleSizeUnit must have a corresponding dwc:sampleSizeValue, e.g., `5` for dwc:sampleSizeValue with `m` for dwc:sampleSizeUnit. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`minute` `hour` `day` `metre` `square metre` `cubic metre`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/sampleSizeUnit
dcterms:references	http://rs.tdwg.org/dwc/terms/version/sampleSizeUnit-2023-06-28

samplingPerformedBy

Title (Label)	Sampling Performed By
Namespace	eco
Table:	Survey
Description	A dcterms:Agent responsible for sampling.
Comments	The sampling dwc:Event could be at any level of hierarchy. In the case of a higher level (parent) dwc:Event, include all the organizations or people involved in the child dwc:Events that contributed to the parent dwc:Event. Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`North American Butterfly Association` `KK Wall` `JJ Green` `LL Pink and FF Grey \| Aspen Center for Environmental Studies`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/samplingPerformedBy
dcterms:references	http://rs.tdwg.org/eco/terms/version/samplingPerformedBy-2025-07-10

samplingPerformedByID

Title (Label)	Sampling Performed By ID
Namespace	dwc
Table:	Survey
Description	An identifier for a dcterms:Agent responsible for sampling.
Comments	Recommended best practice is to provide a single identifier that disambiguates the details of the sampling dcterms:Agent. If a list is used, the order of the identifiers on the list should not be assumed to convey any semantics. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`https://orcid.org/0000-0002-1825-0097`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/samplingPerformedByID

isSamplingEffortReported

Title (Label)	Is Sampling Effort Reported
Namespace	eco
Table:	Survey
Description	The sampling effort associated with a dwc:Event was reported.
Comments	Typically values of effort would be captured under the terms eco:samplingEffortValue and eco:samplingEffortUnit.
Examples	`true` `false`
Type	boolean
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/isSamplingEffortReported
dcterms:references	http://rs.tdwg.org/eco/terms/version/isSamplingEffortReported-2024-02-28

samplingEffortProtocol

Title (Label)	Sampling Effort Protocol
Namespace	eco
Table:	Survey
Description	A description of or reference to a Protocol used to determine a eco:samplingEffortValue.
Comments	This description should be associated with the values reported in eco:samplingEffortValue and eco:samplingEffortUnit. This is a specialization of eco:protocolDescriptions focused on effort, distinct from the survey method. The effort relates to the intensity of sampling and therefore can assist in interpreting estimates of completeness. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`40 box traps deployed at even spacings along 4 parallel 100m transects placed 50m apart and visited at 6 hourly intervals over a 48 hour period` `2 people occupying a bird hide for a period of 8 hours and undertaking a 30 minute count of species within the 150 degree field of view every 2 hours` `A single baited camera trap station with motion sensor trigger, deployed for a period of 10 days and configured for detecting large fauna moving through a known traffic way`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/samplingEffortProtocol
dcterms:references	http://rs.tdwg.org/eco/terms/version/samplingEffortProtocol-2025-07-10

samplingEffortProtocolID

Title (Label)	Sampling Effort Protocol ID
Namespace	ecoiri
Table:	Survey
Description	An identifier for a dwc:Protocol used to determine a eco:samplingEffortValue.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/eco/iri/samplingEffortProtocol
dcterms:references	http://rs.tdwg.org/eco/iri/version/samplingEffortProtocol-2025-07-10

samplingEffortValue

Title (Label)	Sampling Effort Value
Namespace	eco
Table:	Survey
Description	The numeric value for the sampling effort expended during a dwc:Event.
Comments	This term is meant to capture the total sampling effort value. To express details of how the effort was determined use eco:samplingEffortProtocol. For compilations it is recommend not to infer effort. An eco:samplingEffortValue must have a corresponding eco:samplingEffortUnit.
Examples	`1900` `40` `5.5`
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/samplingEffortValue
dcterms:references	http://rs.tdwg.org/eco/terms/version/samplingEffortValue-2024-02-28

samplingEffortUnit

Title (Label)	Sampling Effort Unit
Namespace	eco
Table:	Survey
Description	Units associated with a value in eco:samplingEffortValue.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`trapHours` `personHours` `trapDays`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/samplingEffortUnit
dcterms:references	http://rs.tdwg.org/eco/terms/version/samplingEffortUnit-2025-07-10

informationWithheld

Title (Label)	Information Withheld
Namespace	dwc
Table:	Survey
Description	Additional information that exists about a resource, but that is not shared publicly.
Examples	`location information not given for endangered species` `collector identities withheld \| ask about tissue samples`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/informationWithheld
dcterms:references	http://rs.tdwg.org/dwc/terms/version/informationWithheld-2023-06-28

dataGeneralizations

Title (Label)	Data Generalizations
Namespace	dwc
Table:	Survey
Description	Actions taken to make the shared data less specific or complete than in its original form. Suggests that alternative data of higher quality may be available on request.
Examples	`Coordinates generalized from original GPS coordinates to the nearest half degree grid cell.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dataGeneralizations
dcterms:references	http://rs.tdwg.org/dwc/terms/version/dataGeneralizations-2023-06-28

feedbackURL

Title (Label)	Feedback URL
Namespace	dwc
Table:	Survey
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Comments	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL
dcterms:references	http://rs.tdwg.org/dwc/terms/version/feedbackURL-2025-06-12

Survey Target

Identifier: http://rs.tdwg.org/dwc/dwc-dp/survey-target

Description: An intended scope for dwc:Occurrences in an eco:Survey.

Examples:

`all bird species`

`all bird species except Larus gulls, fulmars and kittiwakes`

`reproductive female Ctenomys sociabilis (only)`

`Oncorhynchus mykiss and Oncorhynchus clarkii (only)`, `all total lengths except < 12 inches`

dcterms:isVersionOf: http://rs.tdwg.org/eco/terms/SurveyTarget

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
surveyID	for	survey	surveyID	Yes

surveyTargetID

Title (Label)	Survey Target ID
Namespace	dwc
Table:	Survey Target
Description	An identifier for a dwc:SurveyTarget.
Comments	Recommended best practice is to use a globally unique identifier. Note: values of this term are not meant to be unique within a dwc:SurveyTarget. A full dwc:SurveyTarget is composed of all records that share the same dwc:surveyTargetID.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyTargetID

surveyID

Title (Label)	Survey ID
Namespace	dwc
Table:	Survey Target
Description	An identifier for a dwc:Survey.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyID

surveyTargetType

Title (Label)	Survey Target Type
Namespace	dwc
Table:	Survey Target
Description	A scope a dwc:SurveyTarget describes.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`taxon` `habitat` `establishmentMeans` `growthForm` `sex` `lifeStage` `minimum length`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyTargetType

surveyTargetTypeIRI

Title (Label)	Survey Target Type IRI
Namespace	dcterms
Table:	Survey Target
Description	An IRI of a controlled vocabulary value for a type of target.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

surveyTargetTypeSource

Title (Label)	Survey Target Type Source
Namespace	dc
Table:	Survey Target
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:surveyTargetType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

surveyTargetValue

Title (Label)	Survey Target Value
Namespace	dwc
Table:	Survey Target
Description	A value of a characteristic to include or exclude in a dwc:SurveyTarget for a given dwc:surveyTargetType.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`Aves` `oak savannah` `native` `tree` `female` `adult` `height` `weight`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyTargetValue

surveyTargetValueIRI

Title (Label)	Survey Target Value IRI
Namespace	dwciri
Table:	Survey Target
Description	An IRI of a controlled vocabulary value for a target value.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/surveyTargetValueIRI

surveyTargetValueSource

Title (Label)	Survey Target Value Source
Namespace	dc
Table:	Survey Target
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:surveyTargetValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

surveyTargetUnit

Title (Label)	Survey Target Unit
Namespace	dwc
Table:	Survey Target
Description	Unit associated with a value in dwc:surveyTargetValue.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`m` `g` `years`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyTargetUnit

surveyTargetUnitIRI

Title (Label)	Survey Target Unit IRI
Namespace	dwciri
Table:	Survey Target
Description	An IRI of a controlled vocabulary value for a target unit.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/surveyTargetUnitIRI

surveyTargetUnitSource

Title (Label)	Survey Target Unit Source
Namespace	dc
Table:	Survey Target
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:surveyTargetUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

includeOrExclude

Title (Label)	Include Or Exclude
Namespace	dwc
Table:	Survey Target
Description	Whether the combination of dwc:surveyTargetType and dwc:surveyTargetValue is included or excluded in a dwc:SurveyTarget.
Comments	Combinations of dwc:SurveyTarget records of inclusions and exclusions can define complex scopes such as all flying adult Aves except Passeriformes. Recommended best practice is to use a controlled vocabulary consisting of 'include' and 'exclude' only.
Examples	`include` `exclude`
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/includeOrExclude

isSurveyTargetFullyReported

Title (Label)	Is Survey Target Fully Reported
Namespace	dwc
Table:	Survey Target
Description	A declaration of whether the counts for an instance of the dwc:SurveyTarget report everything that matches the declared dwc:SurveyTarget.
Comments	If true (the survey target is fully reported - nothing was left unreported), then this enables inference of absence of detection for everything in that dwc:SurveyTarget that is included but that does not appear in the counts (absent counts signify absence of detection).
Examples	`true` `false`
Type	boolean
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/isSurveyTargetFullyReported

Identification

Identifier: http://rs.tdwg.org/dwc/dwc-dp/identification

Description: A classification of a resource according to a classification scheme.

Comments: For biology, the assignment of a scientific name or taxon concept to a dwc:Organism.

Examples:

`a subspecies determination of an organism`

`a nomenclatural act designating a specimen as a holotype`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/Identification

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
materialEntityID	based on	material	materialEntityID	No
mediaID	based on	media	mediaID	No
nucleotideAnalysisID	based on	nucleotide-analysis	nucleotideAnalysisID	No
nucleotideSequenceID	based on	nucleotide-sequence	nucleotideSequenceID	No
occurrenceID	based on	occurrence	occurrenceID	No
organismID	targeted / inferred	organism	organismID	No
identifiedByID	identified by	agent	agentID	No

identificationID

Title (Label)	Identification ID
Namespace	dwc
Table:	Identification
Description	An identifier for a dwc:Identification.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`9992`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identificationID-2023-06-28

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Identification
Description	An identifier for a dwc:MaterialEntity based on which a dwc:Identification was made.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`06809dc5-f143-459a-be1a-6f03e63fc083`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Identification
Description	An identifier for an ac:Media resource based on which a dwc:Identification was made.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

nucleotideAnalysisID

Title (Label)	Nucleotide Analysis ID
Namespace	dwc
Table:	Identification
Description	An identifier for a dwc:NucleotideAnalysis based on which a dwc:Identification was made.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/nucleotideAnalysisID

nucleotideSequenceID

Title (Label)	Nucleotide Sequence ID
Namespace	dwc
Table:	Identification
Description	An identifier for a dwc:NucleotideSequence based on which a dwc:Identification was made.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/nucleotideSequenceID

occurrenceID

Title (Label)	Occurrence ID
Namespace	dwc
Table:	Identification
Description	An identifier for a dwc:Occurrence based on which a dwc:Identification was made.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`http://arctos.database.museum/guid/MSB:Mamm:233627` `000866d2-c177-4648-a200-ead4007051b9` `urn:catalog:UWBM:Bird:89776`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

organismID

Title (Label)	Organism ID
Namespace	dwc
Table:	Identification
Description	An identifier for a dwc:Organism based on which a dwc:Identification was made.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismID-2017-10-06

verbatimIdentification

Title (Label)	Verbatim Identification
Namespace	dwc
Table:	Identification
Description	A string representing the taxonomic identification as it appeared in the original record.
Comments	This term is meant to allow the capture of an unaltered original identification/determination, including identification qualifiers, hybrid formulas, uncertainties, etc. This term is meant to be used in addition to dwc:scientificName (and dwc:identificationQualifier etc.), not instead of it.
Examples	`Peromyscus sp.` `Ministrymon sp. nov. 1` `Anser anser × Branta canadensis` `Pachyporidae?` `Potentilla × pantotricha Soják` `Aconitum pilipes × A. variegatum` `Lepomis auritus x cyanellus`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimIdentification
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimIdentification-2023-06-28

isAcceptedIdentification

Title (Label)	Is Accepted Identification
Namespace	dwc
Table:	Identification
Description	An indicator that this dwc:Identification of a dwc:Organism is a currently an accepted or preferred one.
Type	boolean
dcterms:isVersionOf	http://example.com/term-pending/dwc/isAcceptedIdentification

taxonFormula

Title (Label)	Taxon Formula
Namespace	dwc
Table:	Identification
Description	A string representing the pattern to use to construct a dwc:Identification from dwc:Taxon names and identification qualifiers.
Comments	Recommended best practice is to use a controlled vocabulary such as https://arctos.database.museum/info/ctDocumentation.cfm?table=cttaxa_formula.
Examples	`A` `A ?` `A or B` `A and B` `A x B` `A cf.` `A aff.`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/taxonFormula

typeStatus

Title (Label)	Type Status
Namespace	dwc
Table:	Identification
Description	A list (concatenated and separated) of nomenclatural types (type status, typified scientific name, publication) applied to the subject.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`holotype`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/typeStatus
dcterms:references	http://rs.tdwg.org/dwc/terms/version/typeStatus-2023-06-28

typeDesignationType

Title (Label)	typeDesignationType
Namespace	gbif
Table:	Identification
Description	A category that best matches the nature of a type designation.
Comments	From https://rs.gbif.org/extension/gbif/1.0/typesandspecimen.xml.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/1.0/typeDesignationType
dcterms:references	https://rs.gbif.org/extension/gbif/1.0/typesandspecimen.xml

identifiedBy

Title (Label)	Identified By
Namespace	dwc
Table:	Identification
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a taxonomic determination of a dwc:Organism.
Comments	When used in the context of a dwc:Survey, the subject consists of all of the dwc:Identifications related to the dwc:Survey. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`James L. Patton` `Theodore Pappenfuss \| Robert Macey`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedBy
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identifiedBy-2023-06-28

identifiedByID

Title (Label)	Identified By ID
Namespace	dwciri
Table:	Identification
Description	An identifier for a dcterms:Agent responsible for making a dwc:Identification.
Comments	When used in the context of a dwc:Survey, the subject consists of all of the dwc:Identifications related to the dwc:Survey. Recommended best practice is to provide a single identifier that disambiguates the details of the identifying dcterma:Agent. If a list is used, the order of the identifiers on the list should not be assumed to convey any semantics. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`https://orcid.org/0000-0002-1825-0097` (for an individual) `https://orcid.org/0000-0002-1825-0097 \| https://orcid.org/0000-0002-1825-0098` (for a list of people)
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/identifiedBy
dcterms:references	http://rs.tdwg.org/dwc/iri/version/identifiedBy-2025-06-12

dateIdentified

Title (Label)	Date Identified
Namespace	dwc
Table:	Identification
Description	The date on which the subject was determined as representing the dwc:Taxon.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dateIdentified
dcterms:references	http://rs.tdwg.org/dwc/terms/version/dateIdentified-2025-06-12

identificationReferences

Title (Label)	Identification References
Namespace	dwc
Table:	Identification
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in the dwc:Identification.
Comments	When used in the context of a dwc:Survey, the subject consists of all of the dwc:Identifications related to the dwc:Survey. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Aves del Noroeste Patagonico. Christie et al. 2004.` `Stebbins, R. Field Guide to Western Reptiles and Amphibians. 3rd Edition. 2003. \| Irschick, D.J. and Shaffer, H.B. (1997). The polytypic species revisited: Morphological differentiation among tiger salamanders (Ambystoma tigrinum) (Amphibia: Caudata). Herpetologica, 53(1), 30-49.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationReferences
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identificationReferences-2025-06-12

taxonAssignmentMethod

Title (Label)	Taxon Assignment Method
Namespace	dwc
Table:	Identification
Description	Tool and thresholds used to compare sequences when computing 'species-level' OTUs.
Examples	`blastn` `2.6.0+` `e-value cutoff: 0.001` `identity cutoff: 0.97`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/taxonAssignmentMethod

identificationVerificationStatus

Title (Label)	Identification Verification Status
Namespace	dwc
Table:	Identification
Description	A categorical indicator of the extent to which a taxonomic determination has been verified to be correct.
Comments	Recommended best practice is to use a controlled vocabulary such as that used in HISPID and ABCD. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`0` (unverified in HISPID/ABCD).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationVerificationStatus
dcterms:references	http://rs.tdwg.org/dwc/iri/version/identificationVerificationStatus-2015-03-27

identificationRemarks

Title (Label)	Identification Remarks
Namespace	dwc
Table:	Identification
Description	Comments or notes about the dwc:Identification.
Examples	`Distinguished between Anthus correndera and Anthus hellmayri based on the comparative lengths of the uñas.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identificationRemarks-2023-06-28

taxonID

Title (Label)	Taxon ID
Namespace	dwc
Table:	Identification
Description	An identifier for a dwc:Taxon.
Examples	`8fa58e08-08de-4ac1-b69c-1235340b7001` `32567` `https://www.gbif.org/species/212`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/taxonID-2023-06-28

scientificNameID

Title (Label)	Scientific Name ID
Namespace	dwc
Table:	Identification
Description	An identifier for the nomenclatural (not taxonomic) details of a scientific name.
Examples	`urn:lsid:ipni.org:names:37829-1:1.3`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificNameID-2017-10-06

geoClassificationCode

Title (Label)	Geo Classification Code
Namespace	minext
Table:	Identification
Description	An identifier for a minext:classificationCode.
Comments	Classification codes are specific to a classification system and conform to a xkos:notationPattern.
Examples	`71.02.02a.01` `9.AD.25`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/mineralogy/terms/classificationCode

geoName

Title (Label)	Geo Name
Namespace	minext
Table:	Identification
Description	A human-readable lexical label assigned to a mineral includes both informal (e.g., variety, synonym) and formal (classification) forms.
Examples	`Garnet Group` `Almandine` `Plagioclase (Series)` `Fluorite`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/mineralogy/terms/name

scientificName

Title (Label)	Scientific Name
Namespace	dwc
Table:	Identification
Description	A scientific name string, not including authorship, date or identification qualifiers.
Comments	When applied to an Organism or Occurrence, this term should be used to represent the scientific name that was applied to the associated Organism in accordance with the Taxon to which it was or is currently identified. Names should be compliant to the most recent nomenclatural code. For example, names of hybrids for algae, fungi and plants should follow the rules of the International Code of Nomenclature for algae, fungi, and plants (Schenzhen Code Articles H.1, H.2 and H.3). Thus, use the multiplication sign `×` (Unicode `U+00D7`, HTML `×`) to identify a hybrid, not `x` or `X`, if possible.
Examples	`Coleoptera` (order) `Vespertilionidae` (family) `Manis` (genus) `Ctenomys sociabilis` (genus + specificEpithet) `Ambystoma tigrinum diaboli` (genus + specificEpithet + infraspecificEpithet) `Quercus agrifolia var. oxyadenia` (genus + specificEpithet + taxonRank + infraspecificEpithet) `×Agropogon littoralis` `Mentha ×smithiana` `Agrostis stolonifera L. × Polypogon monspeliensis`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificName-2023-06-28

scientificNameAuthorship

Title (Label)	Scientific Name Authorship
Namespace	dwc
Table:	Identification
Description	The authorship information for the dwc:scientificName formatted according to the conventions of the applicable dwc:nomenclaturalCode.
Examples	`(Torr.) J.T. Howell` `(Martinovský) Tzvelev` `(Györfi, 1952)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameAuthorship
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificNameAuthorship-2023-06-28

vernacularName

Title (Label)	Vernacular Name
Namespace	dwc
Table:	Identification
Description	A common or vernacular name.
Examples	`cóndor andino` `death cap` `rainbow trout` `Gänsegeier` `smoky quartz`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/vernacularName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/vernacularName-2023-06-28

taxonRank

Title (Label)	Taxon Rank
Namespace	dwc
Table:	Identification
Description	The taxonomic rank of the most specific name in the dwc:scientificName.
Comments	Recommended best practice is to use a controlled vocabulary. The taxon ranks of algae, fungi and plants are defined in the International Code of Nomenclature for algae, fungi, and plants (Schenzhen Code Articles H3.2, H4.4 and H.3.1).
Examples	`subspecies` `varietas` `forma` `species` `genus` `nothogenus` `nothospecies` `nothosubspecies`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonRank
dcterms:references	http://rs.tdwg.org/dwc/terms/version/taxonRank-2023-06-28

externalClassificationSource

Title (Label)	External Classification Source
Namespace	dc
Table:	Identification
Description	A reference to a source outside the dataset where the identifying name, code, or taxon concept can be found.
Comments	The external source applies to whichever of dwc:taxonID, dwc:scientificNameID, minext:geoClassificationCode, minext:geoName, dwc:scientificName, or dwc:vernacularName is populated.
Examples	`http://www.catalogueoflife.org/data/taxon/` `https://avibase.bsc-eoc.org/` `Dana, J. D., Dana, E. S., & Gaines, R. V. (1997). Dana's new mineralogy: The system of mineralogy of James Dwight Dana and Edward Salisbury Dana.` `Strunz H, Nickel EH (2001) Strunz Mineralogical Tables, 9th Edition. Berlin and Stuttgart 870 pp.`
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

kingdom

Title (Label)	Kingdom
Namespace	dwc
Table:	Identification
Description	The full scientific name of the kingdom in which the dwc:Taxon is classified.
Examples	`Animalia` `Archaea` `Bacteria` `Chromista` `Fungi` `Plantae` `Protozoa` `Viruses`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/kingdom
dcterms:references	http://rs.tdwg.org/dwc/terms/version/kingdom-2023-06-28

phylum

Title (Label)	Phylum
Namespace	dwc
Table:	Identification
Description	The full scientific name of the phylum or division in which the dwc:Taxon is classified.
Examples	`Chordata` (phylum) `Bryophyta` (division)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/phylum
dcterms:references	http://rs.tdwg.org/dwc/terms/version/phylum-2023-06-28

class

Title (Label)	Class
Namespace	dwc
Table:	Identification
Description	The full scientific name of the class in which the dwc:Taxon is classified.
Examples	`Mammalia` `Hepaticopsida`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/class
dcterms:references	http://rs.tdwg.org/dwc/terms/version/class-2023-06-28

order

Title (Label)	Order
Namespace	dwc
Table:	Identification
Description	The full scientific name of the order in which the dwc:Taxon is classified.
Examples	`Carnivora` `Monocleales`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/order
dcterms:references	http://rs.tdwg.org/dwc/terms/version/order-2023-06-28

family

Title (Label)	Family
Namespace	dwc
Table:	Identification
Description	The full scientific name of the family in which the dwc:Taxon is classified.
Examples	`Felidae` `Monocleaceae`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/family
dcterms:references	http://rs.tdwg.org/dwc/terms/version/family-2023-06-28

subfamily

Title (Label)	Subfamily
Namespace	dwc
Table:	Identification
Description	The full scientific name of the subfamily in which the dwc:Taxon is classified.
Examples	`Periptyctinae` `Orchidoideae` `Sphindociinae`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/subfamily
dcterms:references	http://rs.tdwg.org/dwc/terms/version/subfamily-2023-06-28

genus

Title (Label)	Genus
Namespace	dwc
Table:	Identification
Description	The full scientific name of the genus in which the dwc:Taxon is classified.
Examples	`Puma` `Monoclea`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/genus
dcterms:references	http://rs.tdwg.org/dwc/terms/version/genus-2023-06-28

genericName

Title (Label)	Generic Name
Namespace	dwc
Table:	Identification
Description	The genus part of the dwc:scientificName without authorship.
Comments	For synonyms the accepted genus and the genus part of the name may be different. The term dwc:genericName should be used together with dwc:specificEpithet to form a binomial and with dwc:infraspecificEpithet to form a trinomial. The term dwc:genericName should only be used for combinations. Uninomials of generic rank do not have a dwc:genericName.
Examples	`Felis` (for scientificName `Felis concolor`, with accompanying values of `Puma concolor` in acceptedNameUsage and `Puma` in genus)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/genericName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/genericName-2023-06-28

subgenus

Title (Label)	Subgenus
Namespace	dwc
Table:	Identification
Description	The full scientific name of the subgenus in which the dwc:Taxon is classified.
Comments	A value for this term should be a complete subgenus name as required by the appropriate nomenclatural code.
Examples	`Abacetus (Parastygis)` `Dicranum subgen. Orthodicranum`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/subgenus
dcterms:references	http://rs.tdwg.org/dwc/terms/version/subgenus-2025-06-12

infragenericEpithet

Title (Label)	Infrageneric Epithet
Namespace	dwc
Table:	Identification
Description	The infrageneric part of a binomial name at ranks above species but below genus.
Comments	The term dwc:infragenericEpithet should be used in conjunction with dwc:genericName, dwc:specificEpithet, dwc:infraspecificEpithet, dwc:taxonRank and dwc:scientificNameAuthorship to represent the individual elements of the complete dwc:scientificName. It can be used to indicate the subgenus placement of a species, which in zoology is often given in parentheses. Can also be used to share infrageneric names such as botanical sections (e.g., `Vicia sect. Cracca`).
Examples	`Abacetillus` (for scientificName `Abacetus (Abacetillus) ambiguus`) `Cracca` (for scientificName `Vicia sect. Cracca`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/infragenericEpithet
dcterms:references	http://rs.tdwg.org/dwc/terms/version/infragenericEpithet-2023-06-28

specificEpithet

Title (Label)	Specific Epithet
Namespace	dwc
Table:	Identification
Description	The name of the first or species epithet of the dwc:scientificName.
Examples	`concolor` `gottschei`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/specificEpithet
dcterms:references	http://rs.tdwg.org/dwc/terms/version/specificEpithet-2023-06-28

infraspecificEpithet

Title (Label)	Infraspecific Epithet
Namespace	dwc
Table:	Identification
Description	The name of the first or species epithet of the dwc:scientificName.
Comments	In botany, name strings in literature and identifications may have multiple infraspecific ranks. According to the International Code of Nomenclature for algae, fungi, and plants (Schenzhen Code Articles 6.7 & Art. 24.1), valid names only have two epithets, with the lowest rank being the dwc:infraspecificEpithet. For example: the dwc:infraspecificEpithet in the string `Indigofera charlieriana subsp. sessilis var. scaberrima` is `scaberrima` and the dwc:scientificName is `Indigofera charlieriana var. scaberrima (Schinz) J.B.Gillett`. Use dwc:verbatimIdentification for the full name string used in a dwc:Identification.
Examples	`concolor` (for scientificName `Puma concolor concolor`) `oxyadenia` (for scientificName `Quercus agrifolia var. oxyadenia`) `laxa` (for scientificName `Cheilanthes hirta f. laxa`) `scaberrima` (for scientificName `Indigofera charlieriana var. scaberrima`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/infraspecificEpithet
dcterms:references	http://rs.tdwg.org/dwc/terms/version/infraspecificEpithet-2023-06-28

cultivarEpithet

Title (Label)	Cultivar Epithet
Namespace	dwc
Table:	Identification
Description	Part of the name of a cultivar, cultivar group or grex that follows the dwc:scientificName.
Comments	According to the Rules of the Cultivated Plant Code, a cultivar name consists of a botanical name followed by a cultivar epithet. The value given as the dwc:cultivarEpithet should exclude any quotes. The term dwc:taxonRank should be used to indicate which type of cultivated plant name (e.g. cultivar, cultivar group, grex) is concerned. This epithet, including any enclosing apostrophes or suffix, should be provided in dwc:scientificName as well.
Examples	`King Edward` (for scientificName `Solanum tuberosum 'King Edward'` and taxonRank `cultivar`) `Mishmiense` (for scientificName `Rhododendron boothii Mishmiense Group` and taxonRank `cultivar group`) `Atlantis` (for scientificName `Paphiopedilum Atlantis grex` and taxonRank `grex`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/cultivarEpithet
dcterms:references	http://rs.tdwg.org/dwc/terms/version/cultivarEpithet-2023-06-28

nameAccordingTo

Title (Label)	Name According To
Namespace	dwc
Table:	Identification
Description	The reference to the source in which the specific taxon concept circumscription is defined or implied - traditionally signified by the Latin "sensu" or "sec." (from secundum, meaning "according to"). For taxa that result from identifications, a reference to the keys, monographs, experts and other sources should be given.
Comments	This term provides context to the dwc:scientificName. Together with the dwc:scientificName, separated by `sensu` or `sec.`, it forms the taxon concept label, which may be seen as having the same relationship to dwc:taxonConceptID as, for example, dwc:acceptedNameUsage has to dwc:acceptedNameUsageID. When not provided, in Taxon Core data sets the dwc:nameAccordingTo can be taken to be the data set. In this case the data set mostly provides sufficient context to infer the delimitation of the taxon and its relationship with other taxa. In Occurrence Core data sets, when not provided, dwc:nameAccordingTo can be an underlying taxonomy of the data set, e.g. Plants of the World Online (http://powo.science.kew.org/) for vascular plant records in iNaturalist (in which case it should be provided), or, which is the case for most dwc:PreservedSpecimen data sets, the dwc:Identification, in which case there is no further context.
Examples	`Franz NM, Cardona-Duque J (2013) Description of two new species and phylogenetic reassessment of Perelleschus Wibmer & O’Brien, 1986 (Coleoptera: Curculionidae), with a complete taxonomic concept history of Perelleschus sec. Franz & Cardona-Duque, 2013. Syst Biodivers. 11: 209–236.` (as the full citation of the Franz & Cardona-Duque (2013) in Perelleschus splendida sec. Franz & Cardona-Duque (2013))
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nameAccordingTo
dcterms:references	http://rs.tdwg.org/dwc/terms/version/nameAccordingTo-2023-06-28

nomenclaturalCode

Title (Label)	Nomenclatural Code
Namespace	dwc
Table:	Identification
Description	The nomenclatural code (or codes in the case of an ambiregnal name) under which the dwc:scientificName is constructed.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`ICN` `ICZN` `BC` `ICNCP` `BioCode`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nomenclaturalCode
dcterms:references	http://rs.tdwg.org/dwc/terms/version/nomenclaturalCode-2023-06-28

nomenclaturalStatus

Title (Label)	Nomenclatural Status
Namespace	dwc
Table:	Identification
Description	The status related to the original publication of the name and its conformance to the relevant rules of nomenclature. It is based essentially on an algorithm according to the business rules of the code. It requires no taxonomic opinion.
Examples	`nom. ambig.` `nom. illeg.` `nom. subnud.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nomenclaturalStatus
dcterms:references	http://rs.tdwg.org/dwc/terms/version/nomenclaturalStatus-2023-06-28

namePublishedIn

Title (Label)	Name Published In
Namespace	dwc
Table:	Identification
Description	A reference for the publication in which the dwc:scientificName was originally established under the rules of the associated dwc:nomenclaturalCode.
Comments	A citation of the first publication of the name in its given combination, not the basionym / original name. Recombinations are often not published in zoology, in which case dwc:namePublishedIn should be empty.
Examples	`Pearson O. P., and M. I. Christie. 1985. Historia Natural, 5(37):388` `Forel, Auguste, Diagnosies provisoires de quelques espèces nouvelles de fourmis de Madagascar, récoltées par M. Grandidier., Annales de la Societe Entomologique de Belgique, Comptes-rendus des Seances 30, 1886`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/namePublishedIn
dcterms:references	http://rs.tdwg.org/dwc/terms/version/namePublishedIn-2023-06-28

namePublishedInYear

Title (Label)	Name Published In Year
Namespace	dwc
Table:	Identification
Description	The four-digit year in which the dwc:scientificName was published.
Examples	`1915` `2008`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/namePublishedInYear
dcterms:references	http://rs.tdwg.org/dwc/terms/version/namePublishedInYear-2023-06-28

taxonRemarks

Title (Label)	Taxon Remarks
Namespace	dwc
Table:	Identification
Description	Comments or notes about the taxon or name.
Examples	`this name is a misspelling in common use`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/taxonRemarks-2017-10-06

feedbackURL

Title (Label)	Feedback URL
Namespace	dwc
Table:	Identification
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Comments	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL
dcterms:references	http://rs.tdwg.org/dwc/terms/version/feedbackURL-2025-06-12

Identification Taxon

Identifier: http://rs.tdwg.org/dwc/dwc-dp/identification-taxon

Description: A construct of components and positions of dwc:Taxa in a dwc:Identification.

dcterms:isVersionOf: http://example.com/term-pending//identification-taxon

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
identificationID	for	identification	identificationID	Yes

identificationID

Title (Label)	Identification ID
Namespace	dwc
Table:	Identification Taxon
Description	An identifier for a dwc:Identification.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`9992`
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identificationID-2023-06-28

taxonSortOrder

Title (Label)	Taxon Sort Order
Namespace	dwc
Table:	Identification Taxon
Description	A numerical position of a dwc:Taxon in a taxonFormula.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/taxonSortOrder

taxonID

Title (Label)	Taxon ID
Namespace	dwc
Table:	Identification Taxon
Description	An identifier for a dwc:Taxon.
Comments	In DwC-DP, the dwc:taxonID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`8fa58e08-08de-4ac1-b69c-1235340b7001` `32567` `https://www.gbif.org/species/212`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/taxonID-2023-06-28

scientificNameID

Title (Label)	Scientific Name ID
Namespace	dwc
Table:	Identification Taxon
Description	An identifier for the nomenclatural (not taxonomic) details of a dwc:scientificName.
Comments	In DwC-DP, the dwc:scientificNameID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`urn:lsid:ipni.org:names:37829-1:1.3`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificNameID-2017-10-06

geoClassificationCode

Title (Label)	Geo Classification Code
Namespace	minext
Table:	Identification Taxon
Description	An identifier for a minext:classificationCode.
Comments	Classification codes are specific to a classification system and conform to a xkos:notationPattern.
Examples	`71.02.02a.01` `9.AD.25`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/mineralogy/terms/classificationCode

geoName

Title (Label)	Geo Name
Namespace	minext
Table:	Identification Taxon
Description	A human-readable lexical label assigned to a mineral includes both informal (e.g., variety, synonym) and formal (classification) forms.
Examples	`Garnet Group` `Almandine` `Plagioclase (Series)` `Fluorite`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/mineralogy/terms/name

scientificName

Title (Label)	Scientific Name
Namespace	dwc
Table:	Identification Taxon
Description	A scientific name string, not including authorship, date or identification qualifiers.
Examples	`Coleoptera` (order) `Vespertilionidae` (family) `Manis` (genus) `Ctenomys sociabilis` (genus + specificEpithet) `Ambystoma tigrinum diaboli` (genus + specificEpithet + infraspecificEpithet) `Quercus agrifolia var. oxyadenia` (genus + specificEpithet + taxonRank + infraspecificEpithet) `×Agropogon littoralis` `Mentha ×smithiana` `Agrostis stolonifera L. × Polypogon monspeliensis`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificName-2023-06-28

scientificNameAuthorship

Title (Label)	Scientific Name Authorship
Namespace	dwc
Table:	Identification Taxon
Description	The authorship information for a dwc:scientificName formatted according to the conventions of the applicable dwc:nomenclaturalCode.
Examples	`(Torr.) J.T. Howell` `(Martinovský) Tzvelev` `(Györfi, 1952)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameAuthorship
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificNameAuthorship-2023-06-28

vernacularName

Title (Label)	Vernacular Name
Namespace	dwc
Table:	Identification Taxon
Description	A common or vernacular name.
Examples	`Andean Condor` `death cap` `rainbow trout` `Smoky Quartz` `Amethyst` `Agate` `Tiger's Eye`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/vernacularName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/vernacularName-2023-06-28

taxonRank

Title (Label)	Taxon Rank
Namespace	dwc
Table:	Identification Taxon
Description	A taxonomic rank of the most specific name in a dwc:scientificName.
Comments	Recommended best practice is to use a controlled vocabulary. The taxon ranks of algae, fungi and plants are defined in the International Code of Nomenclature for algae, fungi, and plants (Schenzhen Code Articles H3.2, H4.4 and H.3.1).
Examples	`subspecies` `varietas` `forma` `species` `genus` `nothogenus` `nothospecies` `nothosubspecies`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonRank
dcterms:references	http://rs.tdwg.org/dwc/terms/version/taxonRank-2023-06-28

externalClassificationSource

Title (Label)	External Classification Source
Namespace	dc
Table:	Identification Taxon
Description	A reference to a source outside the dataset where the identifying name, code, or taxon concept can be found.
Comments	The external source applies to whichever of dwc:taxonID, dwc:scientificNameID, minext:geoClassificationCode, minext:geoName, dwc:scientificName, or dwc:vernacularName is populated.
Examples	`http://www.catalogueoflife.org/data/taxon/` `https://avibase.bsc-eoc.org/` `Dana, J. D., Dana, E. S., & Gaines, R. V. (1997). Dana's new mineralogy: The system of mineralogy of James Dwight Dana and Edward Salisbury Dana.` `Strunz H, Nickel EH (2001) Strunz Mineralogical Tables, 9th Edition. Berlin and Stuttgart 870 pp.`
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

kingdom

Title (Label)	Kingdom
Namespace	dwc
Table:	Identification Taxon
Description	A dwc:scientificName of a kingdom in which a dwc:Taxon is classified.
Examples	`Animalia` `Archaea` `Bacteria` `Chromista` `Fungi` `Plantae` `Protozoa` `Viruses`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/kingdom
dcterms:references	http://rs.tdwg.org/dwc/terms/version/kingdom-2023-06-28

phylum

Title (Label)	Phylum
Namespace	dwc
Table:	Identification Taxon
Description	A dwc:scientificName of a phylum or division in which a dwc:Taxon is classified.
Examples	`Chordata` (phylum) `Bryophyta` (division)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/phylum
dcterms:references	http://rs.tdwg.org/dwc/terms/version/phylum-2023-06-28

class

Title (Label)	Class
Namespace	dwc
Table:	Identification Taxon
Description	A dwc:scientificName of a class in which a dwc:Taxon is classified.
Examples	`Mammalia` `Hepaticopsida`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/class
dcterms:references	http://rs.tdwg.org/dwc/terms/version/class-2023-06-28

order

Title (Label)	Order
Namespace	dwc
Table:	Identification Taxon
Description	A dwc:scientificName of an order in which a dwc:Taxon is classified.
Examples	`Carnivora` `Monocleales`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/order
dcterms:references	http://rs.tdwg.org/dwc/terms/version/order-2023-06-28

family

Title (Label)	Family
Namespace	dwc
Table:	Identification Taxon
Description	A dwc:scientificName of a family in which a dwc:Taxon is classified.
Examples	`Felidae` `Monocleaceae`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/family
dcterms:references	http://rs.tdwg.org/dwc/terms/version/family-2023-06-28

subfamily

Title (Label)	Subfamily
Namespace	dwc
Table:	Identification Taxon
Description	A dwc:scientificName of a subfamily in which a dwc:Taxon is classified.
Examples	`Periptyctinae` `Orchidoideae` `Sphindociinae`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/subfamily
dcterms:references	http://rs.tdwg.org/dwc/terms/version/subfamily-2023-06-28

genus

Title (Label)	Genus
Namespace	dwc
Table:	Identification Taxon
Description	A dwc:scientificName of a genus in which a dwc:Taxon is classified.
Examples	`Puma` `Monoclea`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/genus
dcterms:references	http://rs.tdwg.org/dwc/terms/version/genus-2023-06-28

genericName

Title (Label)	Generic Name
Namespace	dwc
Table:	Identification Taxon
Description	The genus part of a dwc:scientificName.
Comments	For synonyms the accepted genus and the genus part of the name may be different. The term dwc:genericName should be used together with dwc:specificEpithet to form a binomial and with dwc:infraspecificEpithet to form a trinomial. The term dwc:genericName should only be used for combinations. Uninomials of generic rank do not have a dwc:genericName.
Examples	`Felis` (for scientificName `Felis concolor`, with accompanying values of `Puma concolor` in acceptedNameUsage and `Puma` in genus)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/genericName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/genericName-2023-06-28

subgenus

Title (Label)	Subgenus
Namespace	dwc
Table:	Identification Taxon
Description	A dwc:scientificName of a subgenus in which a dwc:Taxon is classified.
Comments	A value for this term should be a complete subgenus name as required by the appropriate nomenclatural code.
Examples	`Abacetus (Parastygis)` `Dicranum subgen. Orthodicranum`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/subgenus
dcterms:references	http://rs.tdwg.org/dwc/terms/version/subgenus-2025-06-12

infragenericEpithet

Title (Label)	Infrageneric Epithet
Namespace	dwc
Table:	Identification Taxon
Description	The infrageneric part of a binomial name at ranks above species but below genus.
Examples	`Abacetillus` (for scientificName `Abacetus (Abacetillus) ambiguus`) `Cracca` (for scientificName `Vicia sect. Cracca`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/infragenericEpithet
dcterms:references	http://rs.tdwg.org/dwc/terms/version/infragenericEpithet-2023-06-28

specificEpithet

Title (Label)	Specific Epithet
Namespace	dwc
Table:	Identification Taxon
Description	The name of the first or species epithet of a dwc:scientificName.
Examples	`concolor` `gottschei`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/specificEpithet
dcterms:references	http://rs.tdwg.org/dwc/terms/version/specificEpithet-2023-06-28

infraspecificEpithet

Title (Label)	Infraspecific Epithet
Namespace	dwc
Table:	Identification Taxon
Description	The name of the lowest or terminal infraspecific epithet of a dwc:scientificName, excluding any rank designation.
Comments	In botany, name strings in literature and identifications may have multiple infraspecific ranks. According to the International Code of Nomenclature for algae, fungi, and plants (Schenzhen Code Articles 6.7 & Art. 24.1), valid names only have two epithets, with the lowest rank being the dwc:infraspecificEpithet. For example: the dwc:infraspecificEpithet in the string Indigofera charlieriana subsp. sessilis var. scaberrima is scaberrima and the dwc:scientificName is Indigofera charlieriana var. scaberrima (Schinz) J.B.Gillett. Use dwc:verbatimIdentification for the full name string used in a dwc:Identification.
Examples	`concolor` (for scientificName `Puma concolor concolor`) `oxyadenia` (for scientificName `Quercus agrifolia var. oxyadenia`) `laxa` (for scientificName `Cheilanthes hirta f. laxa`) `scaberrima` (for scientificName `Indigofera charlieriana var. scaberrima`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/infraspecificEpithet
dcterms:references	http://rs.tdwg.org/dwc/terms/version/infraspecificEpithet-2023-06-28

cultivarEpithet

Title (Label)	Cultivar Epithet
Namespace	dwc
Table:	Identification Taxon
Description	Part of the name of a cultivar, cultivar group or grex that follows a dwc:scientificName.
Comments	According to the Rules of the Cultivated Plant Code, a cultivar name consists of a botanical name followed by a cultivar epithet. The value given as the dwc:cultivarEpithet should exclude any quotes. The term dwc:taxonRank should be used to indicate which type of cultivated plant name (e.g. cultivar, cultivar group, grex) is concerned. This epithet, including any enclosing apostrophes or suffix, should be provided in dwc:scientificName as well.
Examples	`King Edward` (for scientificName `Solanum tuberosum 'King Edward'` and taxonRank `cultivar`) `Mishmiense` (for scientificName `Rhododendron boothii Mishmiense Group` and taxonRank `cultivar group`) `Atlantis` (for scientificName `Paphiopedilum Atlantis grex` and taxonRank `grex`)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/cultivarEpithet
dcterms:references	http://rs.tdwg.org/dwc/terms/version/cultivarEpithet-2023-06-28

nameAccordingTo

Title (Label)	Name According To
Namespace	dwc
Table:	Identification Taxon
Description	A reference to the source in which a specific taxon concept circumscription is defined or implied - traditionally signified by the Latin "sensu" or "sec." (from secundum, meaning "according to"). For taxa that result from identifications, a reference to the keys, monographs, experts and other sources should be given.
Comments	This term provides context to the dwc:scientificName. Together with the dwc:scientificName, separated by sensu or sec., it forms the taxon concept label, which may be seen as having the same relationship to dwc:taxonConceptID as, for example, dwc:acceptedNameUsage has to dwc:acceptedNameUsageID. When not provided, in Taxon Core data sets the dwc:nameAccordingTo can be taken to be the data set. In this case the data set mostly provides sufficient context to infer the delimitation of the taxon and its relationship with other taxa. In Occurrence Core data sets, when not provided, dwc:nameAccordingTo can be an underlying taxonomy of the data set, e.g. Plants of the World Online (http://powo.science.kew.org/) for vascular plant records in iNaturalist (in which case it should be provided), or, which is the case for most dwc:PreservedSpecimen data sets, the dwc:Identification, in which case there is no further context.
Examples	`Franz NM, Cardona-Duque J (2013) Description of two new species and phylogenetic reassessment of Perelleschus Wibmer & O’Brien, 1986 (Coleoptera: Curculionidae), with a complete taxonomic concept history of Perelleschus sec. Franz & Cardona-Duque, 2013. Syst Biodivers. 11: 209–236.` (as the full citation of the Franz & Cardona-Duque (2013) in Perelleschus splendida sec. Franz & Cardona-Duque (2013))
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nameAccordingTo
dcterms:references	http://rs.tdwg.org/dwc/terms/version/nameAccordingTo-2023-06-28

nomenclaturalCode

Title (Label)	Nomenclatural Code
Namespace	dwc
Table:	Identification Taxon
Description	A nomenclatural code (or codes in the case of an ambiregnal name) under which a dwc:scientificName is constructed.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`ICN` `ICZN` `BC` `ICNCP` `BioCode`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nomenclaturalCode
dcterms:references	http://rs.tdwg.org/dwc/terms/version/nomenclaturalCode-2023-06-28

nomenclaturalStatus

Title (Label)	Nomenclatural Status
Namespace	dwc
Table:	Identification Taxon
Description	The status related to the original publication of the name and its conformance to the relevant rules of nomenclature. It is based essentially on an algorithm according to the business rules of the code. It requires no taxonomic opinion.
Examples	`nom. ambig.` `nom. illeg.` `nom. subnud.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/nomenclaturalStatus
dcterms:references	http://rs.tdwg.org/dwc/terms/version/nomenclaturalStatus-2023-06-28

namePublishedIn

Title (Label)	Name Published In
Namespace	dwc
Table:	Identification Taxon
Description	A reference for the publication in which a dwc:scientificName was originally established under the rules of an associated dwc:nomenclaturalCode.
Comments	A citation of the first publication of the name in its given combination, not the basionym / original name. Recombinations are often not published in zoology, in which case dwc:namePublishedIn should be empty.
Examples	`Pearson O. P., and M. I. Christie. 1985. Historia Natural, 5(37):388` `Forel, Auguste, Diagnosies provisoires de quelques espèces nouvelles de fourmis de Madagascar, récoltées par M. Grandidier., Annales de la Societe Entomologique de Belgique, Comptes-rendus des Seances 30, 1886`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/namePublishedIn
dcterms:references	http://rs.tdwg.org/dwc/terms/version/namePublishedIn-2023-06-28

namePublishedInYear

Title (Label)	Name Published In Year
Namespace	dwc
Table:	Identification Taxon
Description	The four-digit year in which the dwc:scientificName was published.
Examples	`1915` `2008`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/namePublishedInYear
dcterms:references	http://rs.tdwg.org/dwc/terms/version/namePublishedInYear-2023-06-28

Material

Identifier: http://rs.tdwg.org/dwc/dwc-dp/material

Description: An entity that can be identified, exist for some period of time, and consist in whole or in part of physical matter while it exists.

Comments: The term is defined at the most general level to admit descriptions of any subtype of material entity within the scope of Darwin Core. In particular, any kind of material sample, preserved specimen, fossil, or exemplar from living collections is intended to be subsumed under this term.

Examples:

`the entire contents of a trawl`

`a subset of the contents of a trawl`

`the body of a fish`

`the stomach contents of a fish`

`a rock containing fossils`

`a fossil within a rock`

`an herbarium sheet with its attached plant specimen`

`a flower on a plant specimen`

`a pollen grain`

`a specific water sample`

`an isolated molecule of DNA`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MaterialEntity

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
eventID	collected during	event	eventID	Yes
institutionID	stored in	agent	agentID	No
ownerInstitutionID	owned by	agent	agentID	No
collectedByID	collected by	agent	agentID	No
evidenceForOccurrenceID	evidence for	occurrence	occurrenceID	No
derivedFromMaterialEntityID	derived from	material	materialEntityID	No
derivationEventID	derived during	event	eventID	No
isPartOfMaterialEntityID	part of	material	materialEntityID	No
identifiedByID	identified by	agent	agentID	No

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Material
Description	An identifier for a dwc:MaterialEntity.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`06809dc5-f143-459a-be1a-6f03e63fc083`
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

digitalSpecimenID

Title (Label)	Digital Specimen ID
Namespace	dwc
Table:	Material
Description	An identifier for a Digital Specimen resource.
Comments	A Digital Specimen is defined in https://doi.org/10.3897/rio.7.e67379. A dwc:digitalSpecimenID is intended to uniquely and persistently identify a Digital Specimen. Recommended best practice is to use a DOI with machine readable metadata in the DOI record that uses a community agreed metadata profile (also known as FDO profile) for a Digital Specimen. For an example see: https://doi.org/10.3535/N75-CR4-0SM?noredirect. The identifier is for a digital information artifact (the Digital Specimen) as opposed to an identifier for a specific instance of a dwc:MaterialEntity.
Examples	`https://doi.org/10.3535/M42-Z4P-DRD` `https://doi.org/10.3535/M42-Z4P-DRD?urlappend=/1` `https://doi.org/10.3535/M42-Z4P-DRD?locatt=/1` `doi:10.3535/M42-Z4P-DRD`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/digitalSpecimenID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/digitalSpecimenID-2025-06-12

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Material
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

materialCategory

Title (Label)	Material Category
Namespace	dwc
Table:	Material
Description	A broad category that best matches the nature of a dwc:MaterialEntity.
Comments	Recommended best practice is to use a limited, tightly controlled vocabulary.
Examples	`preserved` `living` `fossilized` `tissue` `DNA extract` `non-biological` `human-made`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/materialCategory

discipline

Title (Label)	Discipline
Namespace	dwc
Table:	Material
Description	The primary branch or branches of knowledge represented by the dwc:MaterialEntity.
Comments	This term can be used to classify records according to branches of knowledge. Recommended best practice is to use a controlled vocabulary and to separate the values in a list with space vertical bar space (` \| `). It is also recommended to use this field to describe specimenType in MIDS.
Examples	`Botany` `Botany \| Virology \| Taxonomy`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/discipline
dcterms:references	http://rs.tdwg.org/dwc/terms/version/discipline-2025-06-12

materialEntityType

Title (Label)	Material Entity Type
Namespace	dwc
Table:	Material
Description	A narrow category that best matches the nature of a dwc:MaterialEntity.
Comments	A more generic classification of a dwc:MaterialEntity than dwc:preparations. Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`Macro-object` `Micro-object` `Oversized object` `Cut/polished gemstone` `Compound Specimen` `Core` `Mixed Materials` `Environmental sample` `Microscope slide` `Spore print` `Macrofossil` `Mesofossil` `Microfossil` `Pinned object/specimen` `Taxidermy mount` `Blood sampling cards` `Oversized fossil` `Anthropogenic Artifact`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityType
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityType-2025-06-12

institutionCode

Title (Label)	Institution Code
Namespace	dwc
Table:	Material
Description	A name (or acronym) an organization.
Examples	`MVZ` `FMNH` `CLO` `UCMP`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/institutionCode
dcterms:references	http://rs.tdwg.org/dwc/terms/version/institutionCode-2023-06-28

institutionID

Title (Label)	Institution ID
Namespace	dwc
Table:	Material
Description	An identifier for an organization.
Comments	For physical specimens, the recommended best practice is to use a globally unique and resolvable identifier from a collections registry such as the Research Organization Registry (ROR) or the Global Registry of Scientific Collections (https://scientific-collections.gbif.org/).
Examples	`https://ror.org/015hz7p22` `http://grscicoll.org/institution/museum-southwestern-biology` `https://www.gbif.org/grscicoll/institution/e3d4dcc4-81e2-444c-8a5c-41d1044b5381`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/institutionID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/institutionID-2025-06-12

ownerInstitutionCode

Title (Label)	Owner Institution Code
Namespace	dwc
Table:	Material
Description	A name (or acronym) in use by an institution having ownership of a dwc:MaterialEntity.
Examples	`NPS` `APN` `InBio`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/ownerInstitutionCode
dcterms:references	http://rs.tdwg.org/dwc/terms/version/ownerInstitutionCode-2023-06-28

ownerInstitutionID

Title (Label)	Owner Institution ID
Namespace	dwciri
Table:	Material
Description	An identifier for an institution that owns a dwc:MaterialEntity.
Comments	For physical specimens, the recommended best practice is to use a globally unique and resolvable identifier from a collections registry such as the Research Organization Registry (ROR) or the Global Registry of Scientific Collections (https://scientific-collections.gbif.org/).
Examples	`https://ror.org/015hz7p22` `http://grscicoll.org/institution/museum-southwestern-biology` `https://scientific-collections.gbif.org/institution/e3d4dcc4-81e2-444c-8a5c-41d1044b5381`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/ownerInstitutionID

collectionCode

Title (Label)	Collection Code
Namespace	dwc
Table:	Material
Description	A name, acronym, coden, or initialism identifying a collection.
Examples	`Mammals` `Hildebrandt` `EBIRD` `VP`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/collectionCode
dcterms:references	http://rs.tdwg.org/dwc/terms/version/collectionCode-2023-06-28

collectionID

Title (Label)	Collection ID
Namespace	dwc
Table:	Material
Description	An identifier for a collection.
Comments	For physical specimens, the recommended best practice is to use a globally unique and resolvable identifier from a collections registry such as the Global Registry of Scientific Collections (https://scientific-collections.gbif.org/).
Examples	`https://scientific-collections.gbif.org/collection/fbd3ed74-5a21-4e01-b86a-33d36f032d9c`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/collectionID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/collectionID-2025-06-12

catalogNumber

Title (Label)	Catalog Number
Namespace	dwc
Table:	Material
Description	An identifier (preferably unique) for a dwc:MaterialEntity within a collection.
Examples	`145732` `145732a` `2008.1334` `R-4313`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/catalogNumber
dcterms:references	http://rs.tdwg.org/dwc/terms/version/catalogNumber-2023-06-28

otherCatalogNumbers

Title (Label)	Other Catalog Numbers
Namespace	dwc
Table:	Material
Description	A list (concatenated and separated) of previous or alternate fully qualified catalog numbers or other human-used identifiers for the same dwc:MaterialEntity, whether in the current or any other data set or collection.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`FMNH:Mammal:1234` `NPS YELLO6778 \| MBG 33424`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/otherCatalogNumbers
dcterms:references	http://rs.tdwg.org/dwc/terms/version/otherCatalogNumbers-2023-06-28

collectedBy

Title (Label)	Collected By
Namespace	dwc
Table:	Material
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for collecting a dwc:MaterialEntity.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`José E. Crespo` `Oliver P. Pearson \| Anita K. Pearson` (where the value in dwc:collectorNumber `OPP 7101` corresponds to the collector number for the specimen in the field catalog of Oliver P. Pearson)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/recordedBy
dcterms:references	http://rs.tdwg.org/dwc/terms/version/recordedBy-2023-06-28

collectedByID

Title (Label)	Collected By ID
Namespace	dwc
Table:	Material
Description	An identifier for the dcterms:Agent responsible for collecting a dwc:MaterialEntity.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://orcid.org/0000-0002-1825-0097` `https://ror.org/00mh9zx15`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/recordedByID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/recordedByID-2023-06-28

objectQuantity

Title (Label)	Object Quantity
Namespace	dwc
Table:	Material
Description	A number or enumeration value for the quantity of differentiable dwc:MaterialEntities comprising this dwc:MaterialEntity.
Comments	An dwc:objectQuantity must have a corresponding dwc:objectQuantityType.
Examples	`27` (objectQuantity) with `individuals` (objectQuantityType) `many` (objectQuantity) with `individuals` (objectQuantityType)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/objectQuantity

objectQuantityType

Title (Label)	Object Quantity Type
Namespace	dwc
Table:	Material
Description	The type of quantification system used for the quantity of dwc:MaterialEntities.
Comments	An dwc:objectQuantityType must have a corresponding dwc:objectQuantity.
Examples	`27` (objectQuantity) with `individuals` (objectQuantityType) `many` (objectQuantity) with `individuals` (objectQuantityType)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/objectQuantityType

collectorNumber

Title (Label)	Collector Number
Namespace	dwc
Table:	Material
Description	An identifier given to a dwc:MaterialEntity at the time it was collected.
Comments	Often serves as a link between field notes and a dwc:MaterialEntity, such as a specimen collector's number.
Examples	`OPP 7101`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/recordNumber
dcterms:references	http://rs.tdwg.org/dwc/terms/version/recordNumber-2023-06-28

preparations

Title (Label)	Preparations
Namespace	dwc
Table:	Material
Description	A list (concatenated and separated) of preparations and preservation methods for a dwc:MaterialEntity.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`fossil` `cast` `photograph` `DNA extract` `skin \| skull \| skeleton` `whole animal (EtOH) \| tissue (EDTA)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/preparations
dcterms:references	http://rs.tdwg.org/dwc/terms/version/preparations-2025-06-12

disposition

Title (Label)	Disposition
Namespace	dwc
Table:	Material
Description	A current state of a dwc:MaterialEntity with respect to where it can be found.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`in collection` `missing` `on loan` `used up` `destroyed` `deaccessioned`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/disposition
dcterms:references	http://rs.tdwg.org/dwc/terms/version/disposition-2023-09-13

verbatimLabel

Title (Label)	Verbatim Label
Namespace	dwc
Table:	Material
Description	A verbatim original representation of the written information affixed or related to a dwc:MaterialEntity.
Comments	The content of this term should include no embellishments, prefixes, headers or other additions made to the text. Abbreviations must not be expanded and supposed misspellings must not be corrected. Lines or breakpoints between blocks of text that could be verified by seeing the original labels or images of them may be used. Examples of material entities include preserved specimens, fossil specimens, and material samples. Best practice is to use UTF-8 for all characters. Best practice is to add comment “verbatimLabel derived from human transcription” in dwc:materialEntityRemarks. Examples can be found at https://dwc.tdwg.org/examples/verbatimLabel.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimLabel
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimLabel-2023-09-13

associatedSequences

Title (Label)	Associated Sequences
Namespace	dwc
Table:	Material
Description	A list (concatenated and separated) of dcterms:BibiographicResources for dwc:NucleotideSequences associated with a dwc:MaterialEntity.
Examples	`http://www.ncbi.nlm.nih.gov/nuccore/U34853.1` `http://www.ncbi.nlm.nih.gov/nuccore/GU328060 \| http://www.ncbi.nlm.nih.gov/nuccore/AF326093`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/associatedSequences
dcterms:references	http://rs.tdwg.org/dwc/terms/version/associatedSequences-2023-09-13

materialReferences

Title (Label)	Material References
Namespace	dwc
Table:	Material
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:MaterialEntity.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`http://www.sciencemag.org/cgi/content/abstract/322/5899/261` `Christopher J. Conroy, Jennifer L. Neuwald. 2008. Phylogeographic study of the California vole, Microtus californicus Journal of Mammalogy, 89(3):755-767.` `Steven R. Hoofer and Ronald A. Van Den Bussche. 2001. Phylogenetic Relationships of Plecotine Bats and Allies Based on Mitochondrial Ribosomal Sequences. Journal of Mammalogy 82(1):131-137. \| Walker, Faith M., Jeffrey T. Foster, Kevin P. Drees, Carol L. Chambers. 2014. Spotted bat (Euderma maculatum) microsatellite discovery using illumina sequencing. Conservation Genetics Resources.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/associatedReferences
dcterms:references	http://rs.tdwg.org/dwc/terms/version/associatedReferences-2023-06-28

informationWithheld

Title (Label)	Information Withheld
Namespace	dwc
Table:	Material
Description	Additional information that exists about a resource, but that is not shared publicly.
Examples	`location information not given for endangered species` `collector identities withheld \| ask about tissue samples`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/informationWithheld
dcterms:references	http://rs.tdwg.org/dwc/terms/version/informationWithheld-2023-06-28

dataGeneralizations

Title (Label)	Data Generalizations
Namespace	dwc
Table:	Material
Description	Actions taken to make the shared data less specific or complete than in its original form. Suggests that alternative data of higher quality may be available on request.
Examples	`Coordinates generalized from original GPS coordinates to the nearest half degree grid cell.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dataGeneralizations
dcterms:references	http://rs.tdwg.org/dwc/terms/version/dataGeneralizations-2023-06-28

materialEntityRemarks

Title (Label)	Material Entity Remarks
Namespace	dwc
Table:	Material
Description	Comments or notes about a dwc:MaterialEntity.
Examples	`found in association with charred remains` `some original fragments missing`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityRemarks-2023-09-13

evidenceForOccurrenceID

Title (Label)	Evidence For Occurrence ID
Namespace	dwc
Table:	Material
Description	An identifier for a dwc:Occurrence for which a dwc:MaterialEntity provides evidence.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

derivedFromMaterialEntityID

Title (Label)	Derived From Material Entity ID
Namespace	dwc
Table:	Material
Description	An identifier for a dwc:MaterialEntity from which this dwc:MaterialEntity was derived.
Comments	This dwc:MaterialEntity is separate from a dwc:MaterialEntity from which it was derived (cf. dwc:isPartOfMaterialEntityID). Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

derivationEventID

Title (Label)	Derivation Event ID
Namespace	dwc
Table:	Material
Description	An identifier for a dwc:Event during which a dwc:MaterialEntity was derived from another dwc:MaterialEntity.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

derivationType

Title (Label)	Derivation Type
Namespace	dwc
Table:	Material
Description	A category that best matches the nature of the derivation of one dwc:MaterialEntity from another dwc:MaterialEntity.
Comments	Recommended best practice is to use a controlled vocabulary. Not expected to be used in Simple Darwin Core
Examples	`sampledFrom` `included`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/derivationType

isPartOfMaterialEntityID

Title (Label)	Is Part Of Material Entity ID
Namespace	dwc
Table:	Material
Description	An identifier for a dwc:MaterialEntity of which this dwc:MaterialEntity is a part.
Comments	This dwc:MaterialEntity was not taken from a dwc:MaterialEntity of which it is a part. Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

verbatimIdentification

Title (Label)	Verbatim Identification
Namespace	dwc
Table:	Material
Description	A string representing a taxonomic identification as it appeared in the original record.
Examples	`Peromyscus sp.` `Ministrymon sp. nov. 1` `Anser anser × Branta canadensis` `Pachyporidae?`, `Potentilla × pantotricha Soják` `Aconitum pilipes × A. variegatum `Lepomis auritus x cyanellus`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimIdentification
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimIdentification-2023-06-28

typeStatus

Title (Label)	Type Status
Namespace	dwc
Table:	Material
Description	A list (concatenated and separated) of nomenclatural types (type status, typified scientific name, publication) applied to the resource.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `). This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`holotype`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/typeStatus
dcterms:references	http://rs.tdwg.org/dwc/terms/version/typeStatus-2023-06-28

typeDesignationType

Title (Label)	typeDesignationType
Namespace	gbif
Table:	Material
Description	A category that best matches the nature of a type designation.
Comments	From https://rs.gbif.org/extension/gbif/1.0/typesandspecimen.xml.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/1.0/typeDesignationType
dcterms:references	https://rs.gbif.org/extension/gbif/1.0/typesandspecimen.xml

typifiedName

Title (Label)	Typified Name
Namespace	dwc
Table:	Material
Description	A scientific name for which a specimen or other name is the type.
Comments	Recommended best practice is also to indicate the dwc:typeStatus of the specimen.
Examples	`Polysiphonia amphibolis Womersley`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/version/typifiedName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/typifiedName-2025-06-12

identifiedBy

Title (Label)	Identified By
Namespace	dwc
Table:	Material
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a taxonomic determination of a dwc:Organism.
Comments	When used in the context of a dwc:Survey, the subject consists of all of the dwc:Identifications related to the dwc:Survey. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`James L. Patton` `Theodore Pappenfuss \| Robert Macey`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identifiedBy
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identifiedBy-2023-06-28

identifiedByID

Title (Label)	Identified By ID
Namespace	dwciri
Table:	Material
Description	An identifier for a dcterms:Agent responsible for making a taxonomic determination of a dwc:Organism.
Examples	`https://orcid.org/0000-0002-1825-0097` (for an individual) `https://orcid.org/0000-0002-1825-0097 \| https://orcid.org/0000-0002-1825-0098` (for a list of people)
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/identifiedBy
dcterms:references	http://rs.tdwg.org/dwc/iri/version/identifiedBy-2025-06-12

dateIdentified

Title (Label)	Date Identified
Namespace	dwc
Table:	Material
Description	A date on which the subject was determined as representing a dwc:Taxon.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/dateIdentified
dcterms:references	http://rs.tdwg.org/dwc/terms/version/dateIdentified-2025-06-12

identificationReferences

Title (Label)	Identification References
Namespace	dwc
Table:	Material
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in the dwc:Identification.
Comments	When used in the context of a dwc:Survey, the subject consists of all of the dwc:Identifications related to the dwc:Survey. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Aves del Noroeste Patagonico. Christie et al. 2004.` `Stebbins, R. Field Guide to Western Reptiles and Amphibians. 3rd Edition. 2003. \| Irschick, D.J. and Shaffer, H.B. (1997). The polytypic species revisited: Morphological differentiation among tiger salamanders (Ambystoma tigrinum) (Amphibia: Caudata). Herpetologica, 53(1), 30-49.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationReferences
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identificationReferences-2025-06-12

identificationVerificationStatus

Title (Label)	Identification Verification Status
Namespace	dwc
Table:	Material
Description	A categorical indicator of the extent to which a dwc:Identification has been verified to be correct.
Comments	Recommended best practice is to use a controlled vocabulary such as that used in HISPID and ABCD.
Examples	`0` (unverified in HISPID/ABCD).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationVerificationStatus
dcterms:references	http://rs.tdwg.org/dwc/iri/version/identificationVerificationStatus-2015-03-27

identificationRemarks

Title (Label)	Identification Remarks
Namespace	dwc
Table:	Material
Description	Comments or notes about a dwc:Identification.
Examples	`Distinguished between Anthus correndera and Anthus hellmayri based on the comparative lengths of the uñas.`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identificationRemarks-2023-06-28

taxonID

Title (Label)	Taxon ID
Namespace	dwc
Table:	Material
Description	An identifier for a dwc:Taxon.
Comments	In DwC-DP, the dwc:taxonID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`8fa58e08-08de-4ac1-b69c-1235340b7001` `32567` `https://www.gbif.org/species/212`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/taxonID-2023-06-28

scientificNameID

Title (Label)	Scientific Name ID
Namespace	dwc
Table:	Material
Description	An identifier for the nomenclatural (not taxonomic) details of a dwc:scientificName.
Comments	In DwC-DP, the dwc:scientificNameID is always an external link to a taxon record. As such, if present, it should be a resolvable globally unique identifier. See the Identifiers section of https://github.com/CatalogueOfLife/coldp/blob/master/README.md.
Examples	`urn:lsid:ipni.org:names:37829-1:1.3`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificNameID-2017-10-06

geoClassificationCode

Title (Label)	Geo Classification Code
Namespace	minext
Table:	Material
Description	An identifier for a minext:classificationCode.
Comments	Classification codes are specific to a classification system and conform to a xkos:notationPattern.
Examples	`71.02.02a.01` `9.AD.25`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/mineralogy/terms/classificationCode

geoName

Title (Label)	Geo Name
Namespace	minext
Table:	Material
Description	A human-readable lexical label assigned to a mineral includes both informal (e.g., variety, synonym) and formal (classification) forms.
Examples	`Garnet Group` `Almandine` `Plagioclase (Series)` `Fluorite`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/mineralogy/terms/name

scientificName

Title (Label)	Scientific Name
Namespace	dwc
Table:	Material
Description	A scientific name string, not including authorship, date or identification qualifiers.
Examples	`Coleoptera` (order) `Vespertilionidae` (family) `Manis` (genus) `Ctenomys sociabilis` (genus + specificEpithet) `Ambystoma tigrinum diaboli` (genus + specificEpithet + infraspecificEpithet) `Quercus agrifolia var. oxyadenia` (genus + specificEpithet + taxonRank + infraspecificEpithet) `×Agropogon littoralis` `Mentha ×smithiana` `Agrostis stolonifera L. × Polypogon monspeliensis`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificName-2023-06-28

scientificNameAuthorship

Title (Label)	Scientific Name Authorship
Namespace	dwc
Table:	Material
Description	The authorship information for a dwc:scientificName formatted according to the conventions of the applicable dwc:nomenclaturalCode.
Examples	`(Torr.) J.T. Howell` `(Martinovský) Tzvelev` `(Györfi, 1952)`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/scientificNameAuthorship
dcterms:references	http://rs.tdwg.org/dwc/terms/version/scientificNameAuthorship-2023-06-28

vernacularName

Title (Label)	Vernacular Name
Namespace	dwc
Table:	Material
Description	A common or vernacular name.
Examples	`Andean Condor` `death cap` `rainbow trout` `Smoky Quartz` `Amethyst` `Agate` `Tiger's Eye`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/vernacularName
dcterms:references	http://rs.tdwg.org/dwc/terms/version/vernacularName-2023-06-28

taxonRank

Title (Label)	Taxon Rank
Namespace	dwc
Table:	Material
Description	A taxonomic rank of the most specific name in a dwc:scientificName.
Comments	Recommended best practice is to use a controlled vocabulary. The taxon ranks of algae, fungi and plants are defined in the International Code of Nomenclature for algae, fungi, and plants (Schenzhen Code Articles H3.2, H4.4 and H.3.1).
Examples	`subspecies` `varietas` `forma` `species` `genus` `nothogenus` `nothospecies` `nothosubspecies`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/taxonRank
dcterms:references	http://rs.tdwg.org/dwc/terms/version/taxonRank-2023-06-28

externalClassificationSource

Title (Label)	External Classification Source
Namespace	dc
Table:	Material
Description	A reference to a source outside the dataset where the identifying name, code, or taxon concept can be found.
Comments	The external source applies to whichever of dwc:taxonID, dwc:scientificNameID, minext:geoClassificationCode, minext:geoName, dwc:scientificName, or dwc:vernacularName is populated.
Examples	`http://www.catalogueoflife.org/data/taxon/` `https://avibase.bsc-eoc.org/` `Dana, J. D., Dana, E. S., & Gaines, R. V. (1997). Dana's new mineralogy: The system of mineralogy of James Dwight Dana and Edward Salisbury Dana.` `Strunz H, Nickel EH (2001) Strunz Mineralogical Tables, 9th Edition. Berlin and Stuttgart 870 pp.`
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

feedbackURL

Title (Label)	Feedback URL
Namespace	dwc
Table:	Material
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Comments	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL
dcterms:references	http://rs.tdwg.org/dwc/terms/version/feedbackURL-2025-06-12

Material Geological Context

Identifier: http://rs.tdwg.org/dwc/dwc-dp/material-geological-context

Description: A dwc:GeologicalContext from which a dwc:MaterialEntify was derived.

Comments: Use this table to establish one or more GeologicalContexts represented in a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-geological-context

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
materialEntityID	for	material	materialEntityID	Yes
geologicalContextID	within	geological-context	geologicalContextID	Yes

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Material Geological Context
Description	An identifier for a dwc:MaterialEntity.
Comments	Values of dwc:materialEntityID are intended to uniquely and persistently identify a particular dwc:MaterialEntity within some context. Examples of context include a particular sample collection, an organization, or the worldwide scale. Recommended best practice is to use a persistent, globally unique identifier. The identifier is bound to a physical object (a dwc:MaterialEntity) as opposed to a particular digital record (representation) of that physical object.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

geologicalContextID

Title (Label)	Geological Context ID
Namespace	dwc
Table:	Material Geological Context
Description	An identifier for a dwc:GeologicalContext.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalContextID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/geologicalContextID-2023-06-28

Nucleotide Analysis

Identifier: http://rs.tdwg.org/dwc/dwc-dp/nucleotide-analysis

Description: A link between a dwc:NucleotideSequence and a dwc:Event and a dwc:MaterialEntity from which it was derived, using a specified dwc:Protocol.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/NucleotideAnalysis

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
eventID	material collected during	event	eventID	Yes
molecularProtocolID	followed	molecular-protocol	molecularProtocolID	Yes
nucleotideSequenceID	produced	nucleotide-sequence	nucleotideSequenceID	Yes
materialEntityID	of	material	materialEntityID	No

nucleotideAnalysisID

Title (Label)	Nucleotide Analysis ID
Namespace	dwc
Table:	Nucleotide Analysis
Description	An identifier for a dwc:NucleotideAnalysis.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/nucleotideAnalysisID

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Nucleotide Analysis
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

molecularProtocolID

Title (Label)	Molecular Protocol ID
Namespace	dwc
Table:	Nucleotide Analysis
Description	An identifier for a dwc:MolecularProtocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/molecularProtocolID

nucleotideSequenceID

Title (Label)	Nucleotide Sequence ID
Namespace	dwc
Table:	Nucleotide Analysis
Description	An identifier for a dwc:NucleotideSequence.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/nucleotideSequenceID

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Nucleotide Analysis
Description	An identifier for a dwc:MaterialEntity.
Comments	Values of dwc:materialEntityID are intended to uniquely and persistently identify a particular dwc:MaterialEntity within some context. Examples of context include a particular sample collection, an organization, or the worldwide scale. Recommended best practice is to use a persistent, globally unique identifier. The identifier is bound to a physical object (a dwc:MaterialEntity) as opposed to a particular digital record (representation) of that physical object.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

readCount

Title (Label)	Read Count
Namespace	dwc
Table:	Nucleotide Analysis
Description	A number of reads for a dwc:NucleotideSequence in a dwc:NucleotideAnalysis.
Type	integer
dcterms:isVersionOf	http://example.com/term-pending/dwc/readCount

totalReadCount

Title (Label)	Total Read Count
Namespace	dwc
Table:	Nucleotide Analysis
Description	A total number of reads in a dwc:NucleotideAnalysis.
Type	integer
dcterms:isVersionOf	http://example.com/term-pending/dwc/totalReadCount

Molecular Protocol

Identifier: http://rs.tdwg.org/dwc/dwc-dp/molecular-protocol

Description: A protocol used to derive and identify a dwc:NucleotideSequence from an ac:MaterialEntity.

Examples:

`a standard DNA barcoding workflow using Sanger sequencing`

`a shotgun metagenomics pipeline for microbial community profiling`

`a high-throughput amplicon sequencing protocol targeting 16S rRNA`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MolecularProtocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
source_mat_id	has source	material	materialEntityID	No

molecularProtocolID

Title (Label)	Molecular Protocol ID
Namespace	dwc
Table:	Molecular Protocol
Description	An identifier for a dwc:MolecularProtocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/molecularProtocolID

assayType

Title (Label)	Assay Type
Namespace	dwc
Table:	Molecular Protocol
Description	A method used in the study to detect taxon/taxa of interest in the sample.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`targeted` `metabarcoding` `other`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assayType

samp_name

Title (Label)	samp_name
Namespace	mixs
Table:	Molecular Protocol
Description	Sample Name is a name that you choose for the sample. It can have any format, but we suggest that you make it concise, unique and consistent within your lab, and as informative as possible. Every Sample Name from a single Submitter must be unique.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0001107

project_name

Title (Label)	project_name
Namespace	mixs
Table:	Molecular Protocol
Description	Name of the project within which the sequencing was organized.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000092

experimental_factor

Title (Label)	experimental_factor
Namespace	mixs
Table:	Molecular Protocol
Description	Experimental factors are essentially the variable aspects of an experiment design which can be used to describe an experiment, or set of experiments, in an increasingly detailed manner. This field accepts ontology terms from Experimental Factor Ontology (EFO) and/or Ontology for Biomedical Investigations (OBI). For a browser of EFO (v 2.95) terms, please see http://purl.bioontology.org/ontology/EFO; for a browser of OBI (v 2018-02-12) terms please see http://purl.bioontology.org/ontology/OBI.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000008

samp_taxon_id

Title (Label)	samp_taxon_id
Namespace	mixs
Table:	Molecular Protocol
Description	NCBI taxon id of the sample. Maybe be a single taxon or mixed taxa sample. Use "synthetic metagenome" for mock community/positive controls, or "blank sample" for negative controls.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0001320

neg_cont_type

Title (Label)	neg_cont_type
Namespace	mixs
Table:	Molecular Protocol
Description	The substance or equipment used as a negative control in an investigation.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0001321

pos_cont_type

Title (Label)	pos_cont_type
Namespace	mixs
Table:	Molecular Protocol
Description	The substance, mixture, product, or apparatus used to verify that a process which is part of an investigation delivers a true positive.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0001322

env_broad_scale

Title (Label)	env_broad_scale
Namespace	mixs
Table:	Molecular Protocol
Description	In this field, report which major environmental system your sample or specimen came from. The systems identified should have a coarse spatial grain, to provide the general environmental context of where the sampling was done (e.g. were you in the desert or a rainforest?). We recommend using subclasses of ENVO’s biome class: http://purl.obolibrary.org/obo/ENVO_00000428. Format (one term): termLabel [termID], Format (multiple terms): termLabel [termID]\|termLabel [termID]\|termLabel [termID]. Example: Annotating a water sample from the photic zone in middle of the Atlantic Ocean, consider: oceanic epipelagic zone biome [ENVO:01000033]. Example: Annotating a sample from the Amazon rainforest consider: tropical moist broadleaf forest biome [ENVO:01000228]. If needed, request new terms on the ENVO tracker, identified here: http://www.obofoundry.org/ontology/envo.html.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000012

env_local_scale

Title (Label)	env_local_scale
Namespace	mixs
Table:	Molecular Protocol
Description	In this field, report the entity or entities which are in your sample or specimen’s local vicinity and which you believe have significant causal influences on your sample or specimen. Please use terms that are present in ENVO and which are of smaller spatial grain than your entry for env_broad_scale. Format (one term): termLabel [termID]; Format (multiple terms): termLabel [termID]\|termLabel [termID]\|termLabel [termID]. Example: Annotating a pooled sample taken from various vegetation layers in a forest consider: canopy [ENVO:00000047]\|herb and fern layer [ENVO:01000337]\|litter layer [ENVO:01000338]\|understory [01000335]\|shrub layer [ENVO:01000336]. If needed, request new terms on the ENVO tracker, identified here: http://www.obofoundry.org/ontology/envo.html.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000013

env_medium

Title (Label)	env_medium
Namespace	mixs
Table:	Molecular Protocol
Description	In this field, report which environmental material or materials (pipe separated) immediately surrounded your sample or specimen prior to sampling, using one or more subclasses of ENVO’s environmental material class: http://purl.obolibrary.org/obo/ENVO_00010483. Format (one term): termLabel [termID]; Format (multiple terms): termLabel [termID]\|termLabel [termID]\|termLabel [termID]. Example: Annotating a fish swimming in the upper 100 m of the Atlantic Ocean, consider: ocean water [ENVO:00002151]. Example: Annotating a duck on a pond consider: pond water [ENVO:00002228]\|air ENVO_00002005. If needed, request new terms on the ENVO tracker, identified here: http://www.obofoundry.org/ontology/envo.html.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000014

subspecf_gen_lin

Title (Label)	subspecf_gen_lin
Namespace	mixs
Table:	Molecular Protocol
Description	This should provide further information about the genetic distinctness of the sequenced organism by recording additional information e.g. serovar, serotype, biotype, ecotype, or any relevant genetic typing schemes like Group I plasmid. It can also contain alternative taxonomic information. It should contain both the lineage name, and the lineage rank, i.e. biovar:abc123.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000020

ploidy

Title (Label)	ploidy
Namespace	mixs
Table:	Molecular Protocol
Description	The ploidy level of the genome (e.g. allopolyploid, haploid, diploid, triploid, tetraploid). It has implications for the downstream study of duplicated gene and regions of the genomes (and perhaps for difficulties in assembly). For terms, please select terms listed under class ploidy (PATO:001374) of Phenotypic Quality Ontology (PATO), and for a browser of PATO (v 2018-03-27) please refer to http://purl.bioontology.org/ontology/PATO.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000021

num_replicons

Title (Label)	num_replicons
Namespace	mixs
Table:	Molecular Protocol
Description	Reports the number of replicons in a nuclear genome of eukaryotes, in the genome of a bacterium or archaea or the number of segments in a segmented virus. Always applied to the haploid chromosome count of a eukaryote.
Type	integer
dcterms:isVersionOf	https://w3id.org/mixs/0000022

extrachrom_elements

Title (Label)	extrachrom_elements
Namespace	mixs
Table:	Molecular Protocol
Description	Do plasmids exist of significant phenotypic consequence (e.g. ones that determine virulence or antibiotic resistance). Megaplasmids? Other plasmids (borrelia has 15+ plasmids).
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000023

estimated_size

Title (Label)	estimated_size
Namespace	mixs
Table:	Molecular Protocol
Description	The estimated size of the genome prior to sequencing. Of particular importance in the sequencing of (eukaryotic) genome which could remain in draft form for a long or unspecified period.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000024

ref_biomaterial

Title (Label)	ref_biomaterial
Namespace	mixs
Table:	Molecular Protocol
Description	Primary publication if isolated before genome publication; otherwise, primary genome report.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000025

source_mat_id

Title (Label)	source_mat_id
Namespace	mixs
Table:	Molecular Protocol
Description	A unique identifier assigned to a material sample (as defined by http://rs.tdwg.org/dwc/terms/materialSampleID, and as opposed to a particular digital record of a material sample) used for extracting nucleic acids, and subsequent sequencing. The identifier can refer either to the original material collected or to any derived sub-samples. The INSDC qualifiers /specimen_voucher, /bio_material, or /culture_collection may or may not share the same value as the source_mat_id field. For instance, the /specimen_voucher qualifier and source_mat_id may both contain ´UAM:Herps:14´ , referring to both the specimen voucher and sampled tissue with the same identifier. However, the /culture_collection qualifier may refer to a value from an initial culture (e.g. ATCC:11775) while source_mat_id would refer to an identifier from some derived culture from which the nucleic acids were extracted (e.g. xatc123 or ark:/2154/R2).
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	https://w3id.org/mixs/0000026

pathogenicity

Title (Label)	pathogenicity
Namespace	mixs
Table:	Molecular Protocol
Description	To what is the entity pathogenic.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000027

biotic_relationship

Title (Label)	biotic_relationship
Namespace	mixs
Table:	Molecular Protocol
Description	Description of relationship(s) between the subject organism and other organism(s) it is associated with. E.g., parasite on species X; mutualist with species Y. The target organism is the subject of the relationship, and the other organism(s) is the object.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000028

specific_host

Title (Label)	specific_host
Namespace	mixs
Table:	Molecular Protocol
Description	If there is a host involved, please provide its taxid (or environmental if not actually isolated from the dead or alive host - i.e. a pathogen could be isolated from a swipe of a bench etc) and report whether it is a laboratory or natural host).
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000029

host_spec_range

Title (Label)	host_spec_range
Namespace	mixs
Table:	Molecular Protocol
Description	The NCBI taxonomy identifier of the specific host if it is known.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000030

host_disease_stat

Title (Label)	host_disease_stat
Namespace	mixs
Table:	Molecular Protocol
Description	List of diseases with which the host has been diagnosed; can include multiple diagnoses. The value of the field depends on host; for humans the terms should be chosen from the DO (Human Disease Ontology) at https://www.disease-ontology.org, non-human host diseases are free text.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000031

trophic_level

Title (Label)	trophic_level
Namespace	mixs
Table:	Molecular Protocol
Description	Trophic levels are the feeding position in a food chain. Microbes can be a range of producers (e.g. chemolithotroph).
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000032

propagation

Title (Label)	propagation
Namespace	mixs
Table:	Molecular Protocol
Description	This field is specific to different taxa. For phages: lytic/lysogenic, for plasmids: incompatibility group, for eukaryotes: sexual/asexual (Note: there is the strong opinion to name phage propagation obligately lytic or temperate, therefore we also give this choice.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000033

encoded_traits

Title (Label)	encoded_traits
Namespace	mixs
Table:	Molecular Protocol
Description	Should include key traits like antibiotic resistance or xenobiotic degradation phenotypes for plasmids, converting genes for phage.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000034

rel_to_oxygen

Title (Label)	rel_to_oxygen
Namespace	mixs
Table:	Molecular Protocol
Description	Is this organism an aerobe, anaerobe? Please note that aerobic and anaerobic are valid descriptors for microbial environments.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000015

isol_growth_condt

Title (Label)	isol_growth_condt
Namespace	mixs
Table:	Molecular Protocol
Description	Publication reference in the form of pubmed ID (pmid), digital object identifier (doi) or url for isolation and growth condition specifications of the organism/material.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000003

samp_collec_device

Title (Label)	samp_collec_device
Namespace	mixs
Table:	Molecular Protocol
Description	The device used to collect an environmental sample. This field accepts terms listed under environmental sampling device (http://purl.obolibrary.org/obo/ENVO). This field also accepts terms listed under specimen collection device (http://purl.obolibrary.org/obo/GENEPIO_0002094).
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000002

samp_collec_method

Title (Label)	samp_collec_method
Namespace	mixs
Table:	Molecular Protocol
Description	The method employed for collecting the sample.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0001225

samp_mat_process

Title (Label)	samp_mat_process
Namespace	mixs
Table:	Molecular Protocol
Description	Any processing applied to the sample during or after retrieving the sample from environment. This field accepts OBI, for a browser of OBI (v 2018-02-12) terms please see http://purl.bioontology.org/ontology/OBI.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000016

size_frac

Title (Label)	size_frac
Namespace	mixs
Table:	Molecular Protocol
Description	Filtering pore size used in sample preparation.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000017

samp_size

Title (Label)	samp_size
Namespace	mixs
Table:	Molecular Protocol
Description	Amount or size of sample (volume, mass or area) that was collected.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000001

samp_vol_we_dna_ext

Title (Label)	samp_vol_we_dna_ext
Namespace	mixs
Table:	Molecular Protocol
Description	Volume (ml) or mass (g) of total collected sample processed for DNA extraction. Note: total sample collected should be entered under the term Sample Size (MIXS:0000001).
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000111

source_uvig

Title (Label)	source_uvig
Namespace	mixs
Table:	Molecular Protocol
Description	Type of dataset from which the UViG was obtained.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000035

virus_enrich_appr

Title (Label)	virus_enrich_appr
Namespace	mixs
Table:	Molecular Protocol
Description	List of approaches used to enrich the sample for viruses, if any.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000036

nucl_acid_ext

Title (Label)	nucl_acid_ext
Namespace	mixs
Table:	Molecular Protocol
Description	A link to a literature reference, electronic resource or a standard operating procedure (SOP), that describes the material separation to recover the nucleic acid fraction from a sample.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000037

nucl_acid_amp

Title (Label)	nucl_acid_amp
Namespace	mixs
Table:	Molecular Protocol
Description	A link to a literature reference, electronic resource or a standard operating procedure (SOP), that describes the enzymatic amplification (PCR, TMA, NASBA) of specific nucleic acids.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000038

lib_size

Title (Label)	lib_size
Namespace	mixs
Table:	Molecular Protocol
Description	Total number of clones in the library prepared for the project.
Type	integer
dcterms:isVersionOf	https://w3id.org/mixs/0000039

lib_reads_seqd

Title (Label)	lib_reads_seqd
Namespace	mixs
Table:	Molecular Protocol
Description	Total number of clones sequenced from the library.
Type	integer
dcterms:isVersionOf	https://w3id.org/mixs/0000040

lib_layout

Title (Label)	lib_layout
Namespace	mixs
Table:	Molecular Protocol
Description	Specify whether to expect single, paired, or other configuration of reads.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000041

lib_vector

Title (Label)	lib_vector
Namespace	mixs
Table:	Molecular Protocol
Description	Cloning vector type(s) used in construction of libraries.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000042

lib_screen

Title (Label)	lib_screen
Namespace	mixs
Table:	Molecular Protocol
Description	Specific enrichment or screening methods applied before and/or after creating libraries.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000043

target_gene

Title (Label)	target_gene
Namespace	mixs
Table:	Molecular Protocol
Description	Targeted gene or locus name for marker gene studies.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000044

target_subfragment

Title (Label)	target_subfragment
Namespace	mixs
Table:	Molecular Protocol
Description	Name of subfragment of a gene or locus. Important to e.g. identify special regions on marker genes like V6 on 16S rRNA.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000045

pcr_primers

Title (Label)	pcr_primers
Namespace	mixs
Table:	Molecular Protocol
Description	PCR primers that were used to amplify the sequence of the targeted gene, locus or subfragment. This field should contain all the primers used for a single PCR reaction if multiple forward or reverse primers are present in a single PCR reaction. The primer sequence should be reported in uppercase letters.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000046

mid

Title (Label)	mid
Namespace	mixs
Table:	Molecular Protocol
Description	Molecular barcodes, called Multiplex Identifiers (MIDs), that are used to specifically tag unique samples in a sequencing run. Sequence should be reported in uppercase letters.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000047

adapters

Title (Label)	adapters
Namespace	mixs
Table:	Molecular Protocol
Description	Adapters provide priming sequences for both amplification and sequencing of the sample-library fragments. Both adapters should be reported; in uppercase letters.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000048

pcr_cond

Title (Label)	pcr_cond
Namespace	mixs
Table:	Molecular Protocol
Description	Description of reaction conditions and components of PCR in the form of ´initial denaturation:94degC_1.5min; annealing=...´.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000049

seq_meth

Title (Label)	seq_meth
Namespace	mixs
Table:	Molecular Protocol
Description	Sequencing method used; e.g. Sanger, ABI-solid.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000050

seq_quality_check

Title (Label)	seq_quality_check
Namespace	mixs
Table:	Molecular Protocol
Description	Indicate if the sequence has been called by automatic systems (none) or undergone a manual editing procedure (e.g. by inspecting the raw data or chromatograms). Applied only for sequences that are not submitted to SRA,ENA or DRA.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000051

chimera_check

Title (Label)	chimera_check
Namespace	mixs
Table:	Molecular Protocol
Description	A chimeric sequence, or chimera for short, is a sequence comprised of two or more phylogenetically distinct parent sequences. Chimeras are usually PCR artifacts thought to occur when a prematurely terminated amplicon reanneals to a foreign DNA strand and is copied to completion in the following PCR cycles. The point at which the chimeric sequence changes from one parent to the next is called the breakpoint or conversion point.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000052

tax_ident

Title (Label)	tax_ident
Namespace	mixs
Table:	Molecular Protocol
Description	The phylogenetic marker(s) used to assign an organism name to the SAG or MAG.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000053

assembly_qual

Title (Label)	assembly_qual
Namespace	mixs
Table:	Molecular Protocol
Description	The assembly quality category is based on sets of criteria outlined for each assembly quality category. For MISAG/MIMAG; Finished: Single, validated, contiguous sequence per replicon without gaps or ambiguities with a consensus error rate equivalent to Q50 or better. High Quality Draft:Multiple fragments where gaps span repetitive regions. Presence of the 23S, 16S and 5S rRNA genes and at least 18 tRNAs. Medium Quality Draft:Many fragments with little to no review of assembly other than reporting of standard assembly statistics. Low Quality Draft:Many fragments with little to no review of assembly other than reporting of standard assembly statistics. Assembly statistics include, but are not limited to total assembly size, number of contigs, contig N50/L50, and maximum contig length. For MIUVIG; Finished: Single, validated, contiguous sequence per replicon without gaps or ambiguities, with extensive manual review and editing to annotate putative gene functions and transcriptional units. High-quality draft genome: One or multiple fragments, totaling ≥ 90% of the expected genome or replicon sequence or predicted complete. Genome fragment(s): One or multiple fragments, totalling < 90% of the expected genome or replicon sequence, or for which no genome size could be estimated.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000056

assembly_name

Title (Label)	assembly_name
Namespace	mixs
Table:	Molecular Protocol
Description	Name/version of the assembly provided by the submitter that is used in the genome browsers and in the community.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000057

assembly_software

Title (Label)	assembly_software
Namespace	mixs
Table:	Molecular Protocol
Description	Tool(s) used for assembly, including version number and parameters.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000058

annot

Title (Label)	annot
Namespace	mixs
Table:	Molecular Protocol
Description	Tool used for annotation, or for cases where annotation was provided by a community jamboree or model organism database rather than by a specific submitter.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000059

number_contig

Title (Label)	number_contig
Namespace	mixs
Table:	Molecular Protocol
Description	Total number of contigs in the cleaned/submitted assembly that makes up a given genome, SAG, MAG, or UViG.
Type	integer
dcterms:isVersionOf	https://w3id.org/mixs/0000060

feat_pred

Title (Label)	feat_pred
Namespace	mixs
Table:	Molecular Protocol
Description	Method used to predict UViGs features such as ORFs, integration site, etc.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000061

ref_db

Title (Label)	ref_db
Namespace	mixs
Table:	Molecular Protocol
Description	List of database(s) used for ORF annotation, along with version number and reference to website or publication.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000062

sim_search_meth

Title (Label)	sim_search_meth
Namespace	mixs
Table:	Molecular Protocol
Description	Tool used to compare ORFs with database, along with version and cutoffs used.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000063

tax_class

Title (Label)	tax_class
Namespace	mixs
Table:	Molecular Protocol
Description	Method used for taxonomic classification, along with reference database used, classification rank, and thresholds used to classify new genomes.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000064

_16s_recover

Title (Label)	_16s_recover
Namespace	mixs
Table:	Molecular Protocol
Description	Can a 16S gene be recovered from the submitted SAG or MAG?.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000065

_16s_recover_software

Title (Label)	_16s_recover_software
Namespace	mixs
Table:	Molecular Protocol
Description	Tools used for 16S rRNA gene extraction.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000066

trnas

Title (Label)	trnas
Namespace	mixs
Table:	Molecular Protocol
Description	The total number of tRNAs identified from the SAG or MAG.
Type	integer
dcterms:isVersionOf	https://w3id.org/mixs/0000067

trna_ext_software

Title (Label)	trna_ext_software
Namespace	mixs
Table:	Molecular Protocol
Description	Tools used for tRNA identification.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000068

compl_score

Title (Label)	compl_score
Namespace	mixs
Table:	Molecular Protocol
Description	Completeness score is typically based on either the fraction of markers found as compared to a database or the percent of a genome found as compared to a closely related reference genome. High Quality Draft: >90%, Medium Quality Draft: >50%, and Low Quality Draft: < 50% should have the indicated completeness scores.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000069

compl_software

Title (Label)	compl_software
Namespace	mixs
Table:	Molecular Protocol
Description	Tools used for completion estimate, i.e. checkm, anvi´o, busco.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000070

compl_appr

Title (Label)	compl_appr
Namespace	mixs
Table:	Molecular Protocol
Description	The approach used to determine the completeness of a given SAG or MAG, which would typically make use of a set of conserved marker genes or a closely related reference genome. For UViG completeness, include reference genome or group used, and contig feature suggesting a complete genome.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000071

contam_score

Title (Label)	contam_score
Namespace	mixs
Table:	Molecular Protocol
Description	The contamination score is based on the fraction of single-copy genes that are observed more than once in a query genome. The following scores are acceptable for; High Quality Draft: < 5%, Medium Quality Draft: < 10%, Low Quality Draft: < 10%. Contamination must be below 5% for a SAG or MAG to be deposited into any of the public databases.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000072

contam_screen_input

Title (Label)	contam_screen_input
Namespace	mixs
Table:	Molecular Protocol
Description	The type of sequence data used as input.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000005

contam_screen_param

Title (Label)	contam_screen_param
Namespace	mixs
Table:	Molecular Protocol
Description	Specific parameters used in the decontamination sofware, such as reference database, coverage, and kmers. Combinations of these parameters may also be used, i.e. kmer and coverage, or reference database and kmer.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000073

decontam_software

Title (Label)	decontam_software
Namespace	mixs
Table:	Molecular Protocol
Description	Tool(s) used in contamination screening.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000074

sort_tech

Title (Label)	sort_tech
Namespace	mixs
Table:	Molecular Protocol
Description	Method used to sort/isolate cells or particles of interest.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000075

single_cell_lysis_appr

Title (Label)	single_cell_lysis_appr
Namespace	mixs
Table:	Molecular Protocol
Description	Method used to free DNA from interior of the cell(s) or particle(s).
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000076

single_cell_lysis_prot

Title (Label)	single_cell_lysis_prot
Namespace	mixs
Table:	Molecular Protocol
Description	Name of the kit or standard protocol used for cell(s) or particle(s) lysis.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000054

wga_amp_appr

Title (Label)	wga_amp_appr
Namespace	mixs
Table:	Molecular Protocol
Description	Method used to amplify genomic DNA in preparation for sequencing.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000055

wga_amp_kit

Title (Label)	wga_amp_kit
Namespace	mixs
Table:	Molecular Protocol
Description	Kit used to amplify genomic DNA in preparation for sequencing.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000006

bin_param

Title (Label)	bin_param
Namespace	mixs
Table:	Molecular Protocol
Description	The parameters that have been applied during the extraction of genomes from metagenomic datasets.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000077

bin_software

Title (Label)	bin_software
Namespace	mixs
Table:	Molecular Protocol
Description	Tool(s) used for the extraction of genomes from metagenomic datasets.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000078

reassembly_bin

Title (Label)	reassembly_bin
Namespace	mixs
Table:	Molecular Protocol
Description	Has an assembly been performed on a genome bin extracted from a metagenomic assembly?.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000079

mag_cov_software

Title (Label)	mag_cov_software
Namespace	mixs
Table:	Molecular Protocol
Description	Tool(s) used to determine the genome coverage if coverage is used as a binning parameter in the extraction of genomes from metagenomic datasets.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000080

vir_ident_software

Title (Label)	vir_ident_software
Namespace	mixs
Table:	Molecular Protocol
Description	Tool(s) used for the identification of UViG as a viral genome, software or protocol name including version number, parameters, and cutoffs used.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000081

pred_genome_type

Title (Label)	pred_genome_type
Namespace	mixs
Table:	Molecular Protocol
Description	Type of genome predicted for the UViG.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000082

pred_genome_struc

Title (Label)	pred_genome_struc
Namespace	mixs
Table:	Molecular Protocol
Description	Expected structure of the viral genome.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000083

detec_type

Title (Label)	detec_type
Namespace	mixs
Table:	Molecular Protocol
Description	Type of UViG detection.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000084

otu_class_appr

Title (Label)	otu_class_appr
Namespace	mixs
Table:	Molecular Protocol
Description	Cutoffs and approach used when clustering new UViGs in "species-level" OTUs. Note that results from standard 95% ANI / 85% AF clustering should be provided alongside OTUS defined from another set of thresholds, even if the latter are the ones primarily used during the analysis.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000085

otu_seq_comp_appr

Title (Label)	otu_seq_comp_appr
Namespace	mixs
Table:	Molecular Protocol
Description	Tool and thresholds used to compare sequences when computing "species-level" OTUs.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000086

otu_db

Title (Label)	otu_db
Namespace	mixs
Table:	Molecular Protocol
Description	Reference database (i.e. sequences not generated as part of the current study) used to cluster new genomes in "species-level" OTUs, if any.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000087

host_pred_appr

Title (Label)	host_pred_appr
Namespace	mixs
Table:	Molecular Protocol
Description	Tool or approach used for host prediction.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000088

host_pred_est_acc

Title (Label)	host_pred_est_acc
Namespace	mixs
Table:	Molecular Protocol
Description	For each tool or approach used for host prediction, estimated false discovery rates should be included, either computed de novo or from the literature.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000089

associated_resource

Title (Label)	associated_resource
Namespace	mixs
Table:	Molecular Protocol
Description	A related resource that is referenced, cited, or otherwise associated to the sequence.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000091

sop

Title (Label)	sop
Namespace	mixs
Table:	Molecular Protocol
Description	Standard operating procedures used in assembly and/or annotation of genomes, metagenomes or environmental sequences.
Type	string
dcterms:isVersionOf	https://w3id.org/mixs/0000090

pcr_primer_forward

Title (Label)	pcr_primer_forward
Namespace	gbif
Table:	Molecular Protocol
Description	Forward PCR primer that were used to amplify the sequence of the targeted gene, locus or subfragment. If multiple multiple forward or reverse primers are present in a single PCR reaction, there should be a full row for each of these linked to the same dwc:Occurrence. The primer sequence should be reported in uppercase letters.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/pcr_primer_forward

pcr_primer_reverse

Title (Label)	pcr_primer_reverse
Namespace	gbif
Table:	Molecular Protocol
Description	Reverse PCR primer that were used to amplify the sequence of the targeted gene, locus or subfragment. If multiple multiple forward or reverse primers are present in a single PCR reaction, there should be a full row for each of these linked to the same dwc:Occurrence. The primer sequence should be reported in uppercase letters.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/pcr_primer_reverse

pcr_primer_name_forward

Title (Label)	pcr_primer_name_forward
Namespace	gbif
Table:	Molecular Protocol
Description	Name of the forward PCR primer that were used to amplify the sequence of the targeted gene, locus or subfragment. If multiple multiple forward or reverse primers are present in a single PCR reaction, there should be a full row for each of these linked to the same dwc:Occurrence.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/pcr_primer_name_forward

pcr_primer_name_reverse

Title (Label)	pcr_primer_name_reverse
Namespace	gbif
Table:	Molecular Protocol
Description	Name of the reverse PCR primer that were used to amplify the sequence of the targeted gene, locus or subfragment. If multiple multiple forward or reverse primers are present in a single PCR reaction, there should be a full row for each of these linked to the same dwc:Occurrence.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/pcr_primer_name_reverse

pcr_primer_reference

Title (Label)	pcr_primer_reference
Namespace	gbif
Table:	Molecular Protocol
Description	Reference for the PCR primers that were used to amplify the sequence of the targeted gene, locus or subfragment.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/pcr_primer_reference

DNA_sequence

Title (Label)	DNA_sequence
Namespace	gbif
Table:	Molecular Protocol
Description	A DNA sequence.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/dna_sequence

concentration

Title (Label)	concentration
Namespace	ggbn
Table:	Molecular Protocol
Description	Concentration of DNA (weight ng/volume µl).
Type	number
dcterms:isVersionOf	http://data.ggbn.org/schemas/ggbn/terms/concentration

concentrationUnit

Title (Label)	concentrationUnit
Namespace	ggbn
Table:	Molecular Protocol
Description	Unit used for concentration measurement.
Type	string
dcterms:isVersionOf	http://data.ggbn.org/schemas/ggbn/terms/concentrationUnit

methodDeterminationConcentrationAndRatios

Title (Label)	methodDeterminationConcentrationAndRatios
Namespace	ggbn
Table:	Molecular Protocol
Description	Description of method used for concentration measurement.
Type	string
dcterms:isVersionOf	http://data.ggbn.org/schemas/ggbn/terms/methodDeterminationConcentrationAndRatios

ratioOfAbsorbance260_230

Title (Label)	ratioOfAbsorbance260_230
Namespace	ggbn
Table:	Molecular Protocol
Description	Ratio of absorbance at 260 nm and 230 nm assessing DNA purity (mostly secondary measure, indicates mainly EDTA, carbohydrates, phenol), (DNA samples only).
Type	number
dcterms:isVersionOf	http://data.ggbn.org/schemas/ggbn/terms/ratioOfAbsorbance260_230

ratioOfAbsorbance260_280

Title (Label)	ratioOfAbsorbance260_280
Namespace	ggbn
Table:	Molecular Protocol
Description	Ratio of absorbance at 280 nm and 230 nm assessing DNA purity (mostly secondary measure, indicates mainly EDTA, carbohydrates, phenol), (DNA samples only).
Type	number
dcterms:isVersionOf	http://data.ggbn.org/schemas/ggbn/terms/ratioOfAbsorbance260_280

annealingTemp

Title (Label)	annealingTemp
Namespace	miqe
Table:	Molecular Protocol
Description	The reaction temperature during the annealing phase of PCR.
Type	number
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/annealingTemp

annealingTempUnit

Title (Label)	annealingTempUnit
Namespace	miqe
Table:	Molecular Protocol
Description	Measurement unit of the reaction temperature during the annealing phase of PCR.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/annealingTempUnit

probeReporter

Title (Label)	probeReporter
Namespace	miqe
Table:	Molecular Protocol
Description	Type of fluorophore (reporter) used. Probe anneals within amplified target DNA. Polymerase activity degrades the probe that has annealed to the template, and the probe releases the fluorophore from it and breaks the proximity to the quencher, thus allowing fluorescence of the fluorophore.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/probeReporter

probeQuencher

Title (Label)	probeQuencher
Namespace	miqe
Table:	Molecular Protocol
Description	Type of quencher used. The quencher molecule quenches the fluorescence emitted by the fluorophore when excited by the cycler’s light source As long as fluorophore and the quencher are in proximity, quenching inhibits any fluorescence signals.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/probeQuencher

ampliconSize

Title (Label)	ampliconSize
Namespace	miqe
Table:	Molecular Protocol
Description	The length of the amplicon in basepairs.
Type	integer
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/ampliconSize

thresholdQuantificationCycle

Title (Label)	thresholdQuantificationCycle
Namespace	miqe
Table:	Molecular Protocol
Description	Threshold for change in fluorescence signal between cycles.
Type	number
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/thresholdQuantificationCycle

baselineValue

Title (Label)	baselineValue
Namespace	miqe
Table:	Molecular Protocol
Description	The number of cycles when fluorescence signal from the target amplification is below background fluorescence not originated from the real target amplification.
Type	integer
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/baselineValue

quantificationCycle

Title (Label)	quantificationCycle
Namespace	miqe
Table:	Molecular Protocol
Description	The number of cycles required for the fluorescent signal to cross a given value threshold above the baseline. Quantification cycle (Cq), threshold cycle (Ct), crossing point (Cp), and take-off point (TOP) refer to the same value from the real-time instrument. Use of quantification cycle (Cq), is preferable according to the RDML (Real-Time PCR Data Markup Language) data standard (http://www.rdml.org).
Type	number
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/quantificationCycle

automaticThresholdQuantificationCycle

Title (Label)	automaticThresholdQuantificationCycle
Namespace	miqe
Table:	Molecular Protocol
Description	Whether the threshold was set by the instrument or manually.
Type	boolean
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/automaticThresholdQuantificationCycle

automaticBaselineValue

Title (Label)	automaticBaselineValue
Namespace	miqe
Table:	Molecular Protocol
Description	Whether the baseline value was set by the instrument or manually.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/automaticBaselineValue

contaminationAssessment

Title (Label)	contaminationAssessment
Namespace	miqe
Table:	Molecular Protocol
Description	Whether DNA or RNA contamination assessment was done or not.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/contaminationAssessment

partitionVolume

Title (Label)	partitionVolume
Namespace	miqe
Table:	Molecular Protocol
Description	An accurate estimation of partition volume. The sum of the partitions multiplied by the partition volume will enable the total volume of the reaction to be calculated.
Type	number
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/partitionVolume

partitionVolumeUnit

Title (Label)	partitionVolumeUnit
Namespace	miqe
Table:	Molecular Protocol
Description	Unit used for partition volume.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/partitionVolumeUnit

estimatedNumberOfCopies

Title (Label)	estimatedNumberOfCopies
Namespace	miqe
Table:	Molecular Protocol
Description	Number of target molecules per µl. Mean copies per partition (?) can be calculated using the number of partitions (n) and the estimated copy number in the total volume of all partitions (m) with a formula ?=m/n.
Type	integer
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/estimatedNumberOfCopies

amplificationReactionVolume

Title (Label)	amplificationReactionVolume
Namespace	miqe
Table:	Molecular Protocol
Description	PCR reaction volume.
Type	number
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/amplificationReactionVolume

amplificationReactionVolumeUnit

Title (Label)	amplificationReactionVolumeUnit
Namespace	miqe
Table:	Molecular Protocol
Description	Unit used for PCR reaction volume. Many of the instruments require preparation of a much larger initial sample volume than is actually analyzed.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/amplificationReactionVolumeUnit

pcr_analysis_software

Title (Label)	pcr_analysis_software
Namespace	miqe
Table:	Molecular Protocol
Description	The program used to analyse the d(d)PCR runs.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/pcr_analysis_software

experimentalVariance

Title (Label)	experimentalVariance
Namespace	miqe
Table:	Molecular Protocol
Description	Multiple biological replicates are encouraged to assess total experimental variation. When single dPCR experiments are performed, a minimal estimate of variance due to counting error alone must be calculated from the binomial (or suitable equivalent) distribution.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/experimentalVariance

pcr_primer_lod

Title (Label)	pcr_primer_lod
Namespace	miqe
Table:	Molecular Protocol
Description	The assay’s ability to detect the target at low levels.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/pcr_primer_lod

pcr_primer_loq

Title (Label)	pcr_primer_loq
Namespace	miqe
Table:	Molecular Protocol
Description	The assay’s ability to quantify copy number at low levels.
Type	string
dcterms:isVersionOf	http://rs.gbif.org/terms/miqe/pcr_primer_loq

Nucleotide Sequence

Identifier: http://rs.tdwg.org/dwc/dwc-dp/nucleotide-sequence

Description: A digital representation of a nucleotide sequence.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/NucleotideSequence

nucleotideSequenceID

Title (Label)	Nucleotide Sequence ID
Namespace	dwc
Table:	Nucleotide Sequence
Description	An identifier for a dwc:NucleotideSequence.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/nucleotideSequenceID

sequence

Title (Label)	Sequence
Namespace	dwc
Table:	Nucleotide Sequence
Description	A string representing nucleotide base pairs.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/sequence

nucleotideSequenceRemarks

Title (Label)	Nucleotide Sequence Remarks
Namespace	dwc
Table:	Nucleotide Sequence
Description	Comments or notes about a dwc:NucleotideSequence.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/nucleotideSequenceRemarks

Agent

Identifier: http://rs.tdwg.org/dwc/dwc-dp/agent

Description: A resource that acts or has the power to act.

Comments: A person, group, organization, machine, software or other entity that can act. Membership in the dcterms:Agent class is determined by the capacity to act, even if not doing so in a specific context. To act: To participate in an event or process by contributing through behavior, operation, or an effect resulting from active participation — regardless of whether that contribution is intentional, volitional, or conscious.

Examples:

`Carl Linnaeus`

`The Terra Nova Expedition`

`The National Science Foundation`

`The El Yunque National Forest ARBIMON System`

`ChatGPT`

dcterms:isVersionOf: http://purl.org/dc/terms/Agent

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Agent
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

agentType

Title (Label)	Agent Type
Namespace	dwc
Table:	Agent
Description	A category that best matches the nature of a dcterms:Agent.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`person` `group` `organization` `camera`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentType

preferredAgentName

Title (Label)	Preferred Agent Name
Namespace	dcterms
Table:	Agent
Description	A name of a dcterms:Agent preferred in searches and results.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/title

agentRemarks

Title (Label)	Agent Remarks
Namespace	dwc
Table:	Agent
Description	Comments or notes about a dcterms:Agent.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRemarks

Agent Agent Role

Identifier: http://rs.tdwg.org/dwc/dwc-dp/agent-agent-role

Description: A role filled by a dcterms:Agent with respect to another dcterms:Agent.

Examples:

`an instance of a dcterms:Agent that is a person is the director of another instance of a dcterms:Agent that is an organization`

`an instance of a dcterms:Agent that is a person is a member of another instance of a dcterms:Agent that is a group`

`an instance of a dcterms:Agent that is a person is the author of another instance of a dcterms:Agent that is software`

dcterms:isVersionOf: http://example.com/term-pending//agent-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
agentID	role holder	agent	agentID	Yes
relatedAgentID	role for	agent	agentID	Yes

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Agent Agent Role
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

relatedAgentID

Title (Label)	Related Agent ID
Namespace	dwc
Table:	Agent Agent Role
Description	An identifier for a related dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/relatedAgentID

agentRole

Title (Label)	Agent Role
Namespace	dwc
Table:	Agent Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Comments	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

agentRoleIRI

Title (Label)	Agent Role IRI
Namespace	dwciri
Table:	Agent Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/agentRoleIRI

agentRoleSource

Title (Label)	Agent Role Source
Namespace	dc
Table:	Agent Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder

Title (Label)	Agent Role Order
Namespace	dwc
Table:	Agent Agent Role
Description	A numerical position of an AgentRole in a set of AgentRoles that have the same combination of dwc:agentRole, dwc:agentRoleIRI, dwc:agentRoleSource and related target.
Comments	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have agentRoleOrder=1, the second would have agentRoleOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRoleOrder

agentRoleDate

Title (Label)	Agent Role Date
Namespace	dwc
Table:	Agent Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

Chronometric Age Agent Role

Identifier: http://rs.tdwg.org/dwc/dwc-dp/chronometric-age-agent-role

Description: A role filled by a dcterms:Agent with respect to a chrono:ChronometricAge.

dcterms:isVersionOf: http://example.com/term-pending//chronometric-age-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
agentID	role holder	agent	agentID	Yes
chronometricAgeID	role for	chronometric-age	chronometricAgeID	Yes

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Chronometric Age Agent Role
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

chronometricAgeID

Title (Label)	Chronometric Age ID
Namespace	chrono
Table:	Chronometric Age Agent Role
Description	An identifier for a chrono:ChronometricAge.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://www.canadianarchaeology.ca/samples/70673`
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeID-2025-06-12

agentRole

Title (Label)	Agent Role
Namespace	dwc
Table:	Chronometric Age Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Comments	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRole

agentRoleIRI

Title (Label)	Agent Role IRI
Namespace	dwciri
Table:	Chronometric Age Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/agentRoleIRI

agentRoleSource

Title (Label)	Agent Role Source
Namespace	dc
Table:	Chronometric Age Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder

Title (Label)	Agent Role Order
Namespace	dwc
Table:	Chronometric Age Agent Role
Description	A numerical position of a dcterms:AgentRole in a set of dcterms:AgentRoles that have the same combination of dwc:agentRole, dwc:agentRoleIRI, dwc:agentRoleSource and related target.
Comments	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRoleOrder

agentRoleDate

Title (Label)	Agent Role Date
Namespace	dwc
Table:	Chronometric Age Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

Event Agent Role

Identifier: http://rs.tdwg.org/dwc/dwc-dp/event-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:Event.

dcterms:isVersionOf: http://example.com/term-pending//event-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
agentID	role holder	agent	agentID	Yes
eventID	role for	event	eventID	Yes

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Event Agent Role
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Event Agent Role
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

agentRole

Title (Label)	Agent Role
Namespace	dwc
Table:	Event Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Comments	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRole

agentRoleIRI

Title (Label)	Agent Role IRI
Namespace	dwciri
Table:	Event Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/agentRoleIRI

agentRoleSource

Title (Label)	Agent Role Source
Namespace	dc
Table:	Event Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder

Title (Label)	Agent Role Order
Namespace	dwc
Table:	Event Agent Role
Description	A numerical position of a dcterms:AgentRole in a set of dcterms:AgentRoles that have the same combination of dwc:agentRole, dwc:agentRoleIRI, dwc:agentRoleSource and related target.
Comments	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRoleOrder

agentRoleDate

Title (Label)	Agent Role Date
Namespace	dwc
Table:	Event Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

Identification Agent Role

Identifier: http://rs.tdwg.org/dwc/dwc-dp/identification-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:Identification.

dcterms:isVersionOf: http://example.com/term-pending//identification-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
agentID	role holder	agent	agentID	Yes
identificationID	role for	identification	identificationID	Yes

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Identification Agent Role
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

identificationID

Title (Label)	Identification ID
Namespace	dwc
Table:	Identification Agent Role
Description	An identifier for a dwc:Identification.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identificationID-2023-06-28

agentRole

Title (Label)	Agent Role
Namespace	dwc
Table:	Identification Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Comments	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRole

agentRoleIRI

Title (Label)	Agent Role IRI
Namespace	dwciri
Table:	Identification Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/agentRoleIRI

agentRoleSource

Title (Label)	Agent Role Source
Namespace	dc
Table:	Identification Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder

Title (Label)	Agent Role Order
Namespace	dwc
Table:	Identification Agent Role
Description	A numerical position of a dcterms:AgentRole in a set of dcterms:AgentRoles that have the same combination of dwc:agentRole, dwc:agentRoleIRI, dwc:agentRoleSource and related target.
Comments	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRoleOrder

agentRoleDate

Title (Label)	Agent Role Date
Namespace	dwc
Table:	Identification Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

Material Agent Role

Identifier: http://rs.tdwg.org/dwc/dwc-dp/material-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
agentID	role holder	agent	agentID	Yes
materialEntityID	role for	material	materialEntityID	Yes

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Material Agent Role
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Material Agent Role
Description	An identifier for a dwc:MaterialEntity.
Comments	Values of dwc:materialEntityID are intended to uniquely and persistently identify a particular dwc:MaterialEntity within some context. Examples of context include a particular sample collection, an organization, or the worldwide scale. Recommended best practice is to use a persistent, globally unique identifier. The identifier is bound to a physical object (a dwc:MaterialEntity) as opposed to a particular digital record (representation) of that physical object.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

agentRole

Title (Label)	Agent Role
Namespace	dwc
Table:	Material Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Comments	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRole

agentRoleIRI

Title (Label)	Agent Role IRI
Namespace	dwciri
Table:	Material Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/agentRoleIRI

agentRoleSource

Title (Label)	Agent Role Source
Namespace	dc
Table:	Material Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder

Title (Label)	Agent Role Order
Namespace	dwc
Table:	Material Agent Role
Description	A numerical position of a dcterms:AgentRole in a set of dcterms:AgentRoles that have the same combination of dwc:agentRole, dwc:agentRoleIRI, dwc:agentRoleSource and related target.
Comments	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRoleOrder

agentRoleDate

Title (Label)	Agent Role Date
Namespace	dwc
Table:	Material Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

Media Agent Role

Identifier: http://rs.tdwg.org/dwc/dwc-dp/media-agent-role

Description: A role filled by a dcterms:Agent with respect to an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//media-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
agentID	role holder	agent	agentID	Yes
mediaID	role for	media	mediaID	Yes

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Media Agent Role
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Media Agent Role
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

agentRole

Title (Label)	Agent Role
Namespace	dwc
Table:	Media Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Comments	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRole

agentRoleIRI

Title (Label)	Agent Role IRI
Namespace	dwciri
Table:	Media Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/agentRoleIRI

agentRoleSource

Title (Label)	Agent Role Source
Namespace	dc
Table:	Media Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder

Title (Label)	Agent Role Order
Namespace	dwc
Table:	Media Agent Role
Description	A numerical position of a dcterms:AgentRole in a set of dcterms:AgentRoles that have the same combination of dwc:agentRole, dwc:agentRoleIRI, dwc:agentRoleSource and related target.
Comments	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRoleOrder

agentRoleDate

Title (Label)	Agent Role Date
Namespace	dwc
Table:	Media Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

Molecular Protocol Agent Role

Identifier: http://rs.tdwg.org/dwc/dwc-dp/molecular-protocol-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:MolecularProtocol.

dcterms:isVersionOf: http://example.com/term-pending//molecular-protocol-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
agentID	role holder	agent	agentID	Yes
molecularProtocolID	role for	molecular-protocol	molecularProtocolID	Yes

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Molecular Protocol Agent Role
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

molecularProtocolID

Title (Label)	Molecular Protocol ID
Namespace	dwc
Table:	Molecular Protocol Agent Role
Description	An identifier for a dwc:MolecularProtocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/molecularProtocolID

agentRole

Title (Label)	Agent Role
Namespace	dwc
Table:	Molecular Protocol Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Comments	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRole

agentRoleIRI

Title (Label)	Agent Role IRI
Namespace	dwciri
Table:	Molecular Protocol Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/agentRoleIRI

agentRoleSource

Title (Label)	Agent Role Source
Namespace	dc
Table:	Molecular Protocol Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder

Title (Label)	Agent Role Order
Namespace	dwc
Table:	Molecular Protocol Agent Role
Description	A numerical position of a dcterms:AgentRole in a set of dcterms:AgentRoles that have the same combination of dwc:agentRole, dwc:agentRoleIRI, dwc:agentRoleSource and related target.
Comments	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRoleOrder

agentRoleDate

Title (Label)	Agent Role Date
Namespace	dwc
Table:	Molecular Protocol Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

Occurrence Agent Role

Identifier: http://rs.tdwg.org/dwc/dwc-dp/occurrence-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:Occurrence.

dcterms:isVersionOf: http://example.com/term-pending//occurrence-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
agentID	role holder	agent	agentID	Yes
occurrenceID	role for	occurrence	occurrenceID	Yes

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Occurrence Agent Role
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

occurrenceID

Title (Label)	Occurrence ID
Namespace	dwc
Table:	Occurrence Agent Role
Description	An identifier for a dwc:Occurrence.
Comments	Recommended best practice is to use a persistent, globally unique identifier. In the absence of a persistent global unique identifier, construct one from a combination of identifiers in the record that will most closely make a dwc:occurrenceID globally unique.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

agentRole

Title (Label)	Agent Role
Namespace	dwc
Table:	Occurrence Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Comments	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRole

agentRoleIRI

Title (Label)	Agent Role IRI
Namespace	dwciri
Table:	Occurrence Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/agentRoleIRI

agentRoleSource

Title (Label)	Agent Role Source
Namespace	dc
Table:	Occurrence Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder

Title (Label)	Agent Role Order
Namespace	dwc
Table:	Occurrence Agent Role
Description	A numerical position of a dcterms:AgentRole in a set of dcterms:AgentRoles that have the same combination of dwc:agentRole, dwc:agentRoleIRI, dwc:agentRoleSource and related target.
Comments	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRoleOrder

agentRoleDate

Title (Label)	Agent Role Date
Namespace	dwc
Table:	Occurrence Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

Organism Interaction Agent Role

Identifier: http://rs.tdwg.org/dwc/dwc-dp/organism-interaction-agent-role

Description: A role filled by a dcterms:Agent with respect to a dwc:OrganismInteraction.

dcterms:isVersionOf: http://example.com/term-pending//organism-interaction-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
agentID	role holder	agent	agentID	Yes
organismInteractionID	role for	organism-interaction	organismInteractionID	Yes

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Organism Interaction Agent Role
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

organismInteractionID

Title (Label)	Organism Interaction ID
Namespace	dwc
Table:	Organism Interaction Agent Role
Description	An identifier for a dwc:OrganismInteraction.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/organismInteractionID

agentRole

Title (Label)	Agent Role
Namespace	dwc
Table:	Organism Interaction Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Comments	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRole

agentRoleIRI

Title (Label)	Agent Role IRI
Namespace	dwciri
Table:	Organism Interaction Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/agentRoleIRI

agentRoleSource

Title (Label)	Agent Role Source
Namespace	dc
Table:	Organism Interaction Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder

Title (Label)	Agent Role Order
Namespace	dwc
Table:	Organism Interaction Agent Role
Description	A numerical position of a dcterms:AgentRole in a set of dcterms:AgentRoles that have the same combination of dwc:agentRole, dwc:agentRoleIRI, dwc:agentRoleSource and related target.
Comments	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRoleOrder

agentRoleDate

Title (Label)	Agent Role Date
Namespace	dwc
Table:	Organism Interaction Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

Survey Agent Role

Identifier: http://rs.tdwg.org/dwc/dwc-dp/survey-agent-role

Description: A role filled by a dcterms:Agent with respect to an eco:Survey.

dcterms:isVersionOf: http://example.com/term-pending//survey-agent-role

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
agentID	role holder	agent	agentID	Yes
surveyID	role for	survey	surveyID	Yes

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Survey Agent Role
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

surveyID

Title (Label)	Survey ID
Namespace	dwc
Table:	Survey Agent Role
Description	An identifier for a dwc:Survey.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyID

agentRole

Title (Label)	Agent Role
Namespace	dwc
Table:	Survey Agent Role
Description	A category that best matches the nature of a role of a dcterms:Agent.
Comments	Recommended best practice is to use a controlled vocabulary for the roles appropriate to the class of resource a dcterms:AgentRole is related to.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRole

agentRoleIRI

Title (Label)	Agent Role IRI
Namespace	dwciri
Table:	Survey Agent Role
Description	An IRI of the controlled vocabulary value for a role of a dcterms:Agent.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/agentRoleIRI

agentRoleSource

Title (Label)	Agent Role Source
Namespace	dc
Table:	Survey Agent Role
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:agentRole is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

agentRoleOrder

Title (Label)	Agent Role Order
Namespace	dwc
Table:	Survey Agent Role
Description	A numerical position of a dcterms:AgentRole in a set of dcterms:AgentRoles that have the same combination of dwc:agentRole, dwc:agentRoleIRI, dwc:agentRoleSource and related target.
Comments	One could use dwc:agentRoleOrder to create an ordered list of collectors (dwc:agentRole = 'collector') for a dwc:MaterialEntity, for example. The first would have dwc:agentRoleOrder=1, the second would have dwc:agentRoleOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentRoleOrder

agentRoleDate

Title (Label)	Agent Role Date
Namespace	dwc
Table:	Survey Agent Role
Description	An interval during which a dcterms:AgentRole was in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

Media

Identifier: http://rs.tdwg.org/dwc/dwc-dp/media

Description: A dcmi:MediaType or other media type with other entities as subject matter.

Comments: An instance of digital textual media may be better represented as a dcterms:BibliographicResource.

Examples:

`dcmi:Sound`

`dcmi:StillImage`

`dcmi:MovingImage`

dcterms:isVersionOf: http://rs.tdwg.org/ac/terms/Media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
derivedFromMediaID	derived from	media	mediaID	No
isPartOfMediaID	part of	media	mediaID	No
commenterID	comment by	agent	agentID	No
reviewerID	reviewed by	agent	agentID	No

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Media
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

derivedFromMediaID

Title (Label)	Derived From Media ID
Namespace	dwc
Table:	Media
Description	An identifier for an ac:Media resource from which this ac:Media resource was derived.
Comments	This term can be used when an ac:Media resource has been separated from its source ac:Media resource. Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/derivedFromMediaID

isPartOfMediaID

Title (Label)	Is Part Of Media ID
Namespace	ac
Table:	Media
Description	An identifier for an ac:Media resource of which this ac:Media resource is a part.
Comments	This term can be used to define an ac:RegionOfInterest within an ac:Media resource. Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/isROIOf
dcterms:references	http://rs.tdwg.org/ac/terms/version/isROIOf-2021-10-05

mediaType

Title (Label)	Media Type
Namespace	dcterms
Table:	Media
Description	A category that best matches the nature of an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`Sound` `StillImage` `MovingImage` `InteractiveResource` `Text`
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

title

Title (Label)	Title
Namespace	dcterms
Table:	Media
Description	A name given to a resource.
Comments	Concise title, name, or brief descriptive label of institution, resource collection, or individual resource. This field SHOULD include the complete title with all the subtitles, if any. It is strongly suggested to provide a title. The title facilitates interactions with humans: e.g., it could be used as display text of hyperlinks or to provide a choice of images in a pick list. The title is therefore highly useful and an effort should be made to provide it where it is not already available. When the resource is a collection without an institutional or official name, but with a thematic content, a descriptive title, e. g. "Urban Ants of New England," would be suitable. In individual media resources depicting taxa, the scientific name or names of taxa often form a good title. Common names in addition to or instead of scientific names are also acceptable. Indications of action or roles captured by the media resource, such as predatory acts, are desirable ("Rattlesnake eating deer mouse", "Pollinators of California Native Plants").
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/title

description

Title (Label)	Description
Namespace	dcterms
Table:	Media
Description	An account of the resource.
Comments	Description of collection or individual resource, containing the Who, What, When, Where and Why as free-form text. This property optionally allows the presentation of detailed information and will in most cases be shown together with the resource title. If both a description and a caption are present in the metadata, a description is typically displayed instead of the resource, whereas a caption is displayed together with the resource. The description should aim to be a good proxy for the underlying media resource in cases where only text can be shown, whereas the caption may only make sense when shown together with the media. Thus, in HTML it would be appropriate to use dcterms:description values for alt attributes in img elements. Often only one of description or caption is present; choose the term most appropriate for your metadata. It is the role of implementers of an AC concrete representation (e.g., an XML Schema, an RDF representation, etc.) to decide and document how formatting advice will be represented in descriptions serialized according to such representations.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/description

caption

Title (Label)	Caption
Namespace	ac
Table:	Media
Description	Free-form text to be displayed together with (rather than instead of) a resource that is suitable for captions (especially images).
Comments	If both description and caption are present in the metadata, a description is typically displayed instead of the resource, a caption together with the resource. Thus, in HTML it would be appropriate to use ac:caption values in figcaption elements. Often only one of description or caption is present; choose the term most appropriate for your metadata.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/caption
dcterms:references	http://rs.tdwg.org/ac/terms/version/caption-2021-10-05

subtypeLiteral

Title (Label)	Subtype Literal
Namespace	ac
Table:	Media
Description	A subcategory that allows further specialization of an ac:Media resource type than mediaType.
Comments	The subtypeLiteral term MUST NOT be applied to Collection objects. However, the Description term in the Content Coverage Vocabulary might add further description to a Collection object. Controlled string values SHOULD be selected from the Controlled Vocabulary for ac:subtype. Human-readable information about the Controlled Vocabulary for ac:subtype is at http://rs.tdwg.org/ac/doc/subtype/. It is best practice to use ac:subtype instead of ac:subytpeLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subtypeLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subtypeLiteral-2023-09-05

subtypeIRI

Title (Label)	Subtype IRI
Namespace	ac
Table:	Media
Description	A class, represented by an IRI, that provides for more specialization of an ac:Media resource type than dcterms:type.
Comments	The subtype term MUST NOT be applied to Collection objects. However, the Description term in the Content Coverage Vocabulary might add further description to a Collection object. IRI values SHOULD be selected from the Controlled Vocabulary for ac:subtype. Human-readable information about the Controlled Vocabulary for ac:subtype is at http://rs.tdwg.org/ac/doc/subtype/. In text-based systems such as tables, IRI values MUST be in unabbreviated form. When an appropriate subtype is not available in the Audiovisual Core controlled vocabulary, a term IRI that is not in a TDWG namespace MAY be used. Conforming applications MAY choose to ignore controlled values not issued by Audiovisual Core. See ac:subtypeLiteral for usage with strings.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subtype
dcterms:references	http://rs.tdwg.org/ac/terms/version/subtype-2023-09-05

collectionCode

Title (Label)	Collection Code
Namespace	dwc
Table:	Media
Description	A name, acronym, coden, or initialism identifying a collection.
Examples	`Mammals` `Hildebrandt` `EBIRD` `VP`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/collectionCode
dcterms:references	http://rs.tdwg.org/dwc/terms/version/collectionCode-2023-06-28

collectionID

Title (Label)	Collection ID
Namespace	dwc
Table:	Media
Description	An identifier for a collection.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/collectionID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/collectionID-2025-06-12

CreateDate

Title (Label)	Original Date and Time
Namespace	xmp
Table:	Media
Description	The date and time a resource was created. For a digital file, this need not match a file-system creation time. For a freshly created resource, it should be close to that time, modulo the time taken to write the file. Later file transfer, copying, and so on, can make the file-system time arbitrarily different.
Comments	The date of the creation of the original resource from which the digital media was derived or created. The date and time MUST comply with the World Wide Web Consortium (W3C) datetime practice, https://www.w3.org/TR/NOTE-datetime, which requires that date and time representation correspond to ISO 8601:1998, but with year fields always comprising 4 digits. This makes datetime records compliant with 8601:2004, https://www.iso.org/standard/40874.html. AC datetime values MAY also follow 8601:2004 for ranges by separating two IS0 8601 datetime fields by a solidus ("forward slash", '/'). When applied to a media resource with temporal extent such as audio or video, this property indicates the startTime of the recording. What constitutes "original" is determined by the metadata author. Example: Digitization of a photographic slide of a map would normally give the date at which the map was created; however a photographic work of art including the same map as its content may give the date of the original photographic exposure. Imprecise or unknown dates can be represented as ISO dates or ranges. Compare also Date and Time Digitized in the Resource Creation Vocabulary. See also the wikipedia IS0 8601 entry, https://en.wikipedia.org/wiki/ISO_8601, for further explanation and examples.
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/CreateDate

timeOfDay

Title (Label)	Time Of Day
Namespace	ac
Table:	Media
Description	Free text information beyond exact clock times.
Examples	`afternoon` `twilight`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/timeOfDay
dcterms:references	http://rs.tdwg.org/ac/terms/version/timeOfDay-2020-01-27

digitizationDate

Title (Label)	Digitization Date
Namespace	ac
Table:	Media
Description	A date on which the first digital version of a resource was created, if different from xmp:CreateDate.
Comments	The date and time MUST comply with the World Wide Web Consortium (W3C) datetime practice, https://www.w3.org/TR/NOTE-datetime, which requires that date and time representation correspond to ISO 8601:1998, but with year fields always comprising 4 digits. This makes datetime records compliant with 8601:2004, https://www.iso.org/standard/40874.html. AC datetime values MAY also follow 8601:2004 for ranges by separating two IS0 8601 datetime fields by a solidus ("forward slash", '/'). Use the international (ISO/xml) format yyyy-mm-ddThh:mm (e. g. "2007-12-31" or "2007-12-31T14:59"). Where available, timezone information SHOULD be added. This is often not the media creation or modification date. For example, if photographic prints have been scanned, the date of that scanning is what this term carries, but Original Date and Time is that depicted in the print. In the case of digital images containing EXIF, whereas the EXIF capture date does not contain time zone information, but EXIF GPSDateStamp and GPSTimeStamp may be relevant as these include time-zone information. See also Metadata Working Group Guidelines for Handling Image Metadata, Version 2.0 (November 2010), https://web.archive.org/web/20180919181934/http://www.metadataworkinggroup.org/pdf/mwg_guidance.pdf, which has best practice advice on handling time-zone-less EXIF date/time data. See also the Wikipedia IS0 8601 entry, https://en.wikipedia.org/wiki/ISO_8601, for further explanation and examples.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/digitizationDate
dcterms:references	http://rs.tdwg.org/ac/terms/version/digitizationDate-2020-01-27

captureDevice

Title (Label)	Capture Device
Namespace	ac
Table:	Media
Description	Free form text describing the device or devices used to create the resource.
Comments	It is best practice to record the device; this may include a combination such as camera plus lens, or camera plus microscope. Examples: "Canon Supershot 2000", "Makroscan Scanner 2000", "Zeiss Axioscope with Camera IIIu", "SEM (Scanning Electron Microscope)".
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/captureDevice
dcterms:references	http://rs.tdwg.org/ac/terms/version/captureDevice-2020-01-27

frameRate

Title (Label)	Frame Rate
Namespace	ac
Table:	Media
Description	The decimal fraction representing the frequency (rate) at which consecutive images (frames) were captured in real time for a dcmi:MovingImage, expressed as the number of frames per second.
Comments	This term represents the rate at which consecutive images were captured in real time, not the rate at which the media is encoded to play back the recording. For example, in a recording where 60 consecutive images (frames) are captured for each second of the real-time recording, this would be 60. In a time-lapse recording where one image (frame) is recorded every 5 seconds of recording, this would be 0.2.
Examples	`60` `0.2`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/frameRate
dcterms:references	http://rs.tdwg.org/ac/terms/version/frameRate-2022-02-23

resourceCreationTechnique

Title (Label)	Resource Creation Technique
Namespace	ac
Table:	Media
Description	Information about technical aspects of the creation and digitization process of the resource. This includes modification steps ("retouching") after the initial resource capture.
Comments	Annotating whether and how a resource has been modified or edited significantly in ways that are not immediately obvious to, or expected by, consumers is of special significance. Examples for images are: Removing a distracting twig from a picture, moving an object to a different surrounding, changing the color in parts of the image, or blurring the background of an image. Modifications that are standard practice and expected or obvious are not necessary to document; examples of such practices include changing resolution, cropping, minor sharpening or overall color correction, and clearly perceptible modifications (e.g., addition of arrows or labels, or the placement of multiple pictures into a table.) If it is only known that significant modifications were made, but no details are known, a general statement like "Media may have been manipulated to improve appearance" may be appropriate. See also Subject Preparation Technique. Encoding method or settings, numbers of channels, lighting, frames per second, data rate, interlaced or progressive, multiflash lighting, remote control, automatic interval exposure.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/resourceCreationTechnique
dcterms:references	http://rs.tdwg.org/ac/terms/version/resourceCreationTechnique-2020-10-13

sample-rate

Title (Label)	Sample Rate
Namespace	mo
Table:	Media
Description	Associates a digital signal to its sample rate.
Comments	Numeric value in hertz (Hz). For example, a Service Access Point may have a specific resolution, quality, or format. “Sample rate” is distinct from the related concept of “bit rate” for compressed files such as MP3, and is applicable to both uncompressed and compressed files. See http://musicontology.com/specification/#term-sample_rate for additional information.
Type	number
dcterms:isVersionOf	http://purl.org/ontology/mo/sample_rate

modified

Title (Label)	Modified
Namespace	dcterms
Table:	Media
Description	Date on which the resource was changed.
Comments	Date that the media resource was altered. The date and time MUST comply with the World Wide Web Consortium (W3C) datetime practice, https://www.w3.org/TR/NOTE-datetime, which requires that date and time representation correspond to ISO 8601:1998, https://www.iso.org/standard/40874.html, but with year fields always comprising 4 digits. This makes datetime records compliant with 8601:2004. AC datetime values MAY also follow 8601:2004 for ranges by separating two IS0 8601 datetime fields by a solidus ("forward slash", '/'). dcterms:modified permits all modification dates to be recorded, or if only one is recorded, it is assumed to be the latest. See also the wikipedia IS0 8601 entry, https://en.wikipedia.org/wiki/ISO_8601, for further explanation and examples.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/modified

language

Title (Label)	Language
Namespace	dc
Table:	Media
Description	A language of the resource.
Comments	URI from the ISO639-2 list of URIs for ISO 3-letter language codes, http://id.loc.gov/vocabulary/iso639-2. An image may contain language such as superimposed labels. If an image is of a natural scene or organism, without any language included, the resource is language-neutral with URI http://id.loc.gov/vocabulary/iso639-2/zxx corresponding to ISO ISO639-2 code "zxx". Resources with present but unknown language are to be coded as undetermined, with URI http://id.loc.gov/vocabulary/iso639-2/und corresponding to ISO639-2 code "und". Regional dialects or other special cases should conform to the ISO639-5 Alpha-3 Code for Language Families and Groups, http://id.loc.gov/vocabulary/iso639-5.html, where possible or the IETF Best Practices for Tags Identifying Languages, https://tools.ietf.org/html/rfc5646, where not. See also the entry for dc:language in the Audiovisual Core term list document and see the DCMI FAQ on DC and DCTERMS Namespaces, https://web.archive.org/web/20171126043657/https://github.com/dcmi/repository/blob/master/mediawiki_wiki/FAQ/DC_and_DCTERMS_Namespaces.md, for discussion of the rationale for terms in two namespaces. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/language

languageIRI

Title (Label)	Language IRI
Namespace	dcterms
Table:	Media
Description	A language of the resource.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/language

MetadataDate

Title (Label)	Metadata Date
Namespace	xmp
Table:	Media
Description	The date and time that any metadata for this resource was last changed. It should be the same as or more recent than dcterms:modified.
Comments	Point in time recording when the last modification to metadata (not necessarily the media object itself) occurred. The date and time MUST comply with the World Wide Web Consortium (W3C) datetime practice, https://www.w3.org/TR/NOTE-datetime, which requires that date and time representation correspond to ISO 8601:1998, but with year fields always comprising 4 digits. This makes datetime records compliant with 8601:2004, https://www.iso.org/standard/40874.html. AC datetime values MAY also follow 8601:2004 for ranges by separating two IS0 8601 datetime fields by a solidus ("forward slash", '/'). This is not dcterms:modified, which refers to the resource itself rather than its metadata. See also the wikipedia IS0 8601 entry, https://en.wikipedia.org/wiki/ISO_8601, for further explanation and examples.
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/MetadataDate

metadataLanguageLiteral

Title (Label)	Metadata Language Literal
Namespace	ac
Table:	Media
Description	Language of description and other metadata (but not necessarily of the image itself) represented as an ISO639-2 three letter language code.
Comments	ISO639-1 two-letter codes are permitted but deprecated. At least one of ac:metadataLanguage and ac:metadataLanguageLiteral MUST be supplied but, when feasible, supplying both might make the metadata more widely useful. They MUST specify the same language. In case of ambiguity, ac:metadataLanguage prevails. This is NOT dc:language, which is about the resource, not the metadata. Metadata Language is deliberately single-valued, imposing on unstructured serializations a requirement that multi-lingual metadata be represented as separate, complete, metadata records. Audiovisual Core requires that each record also contains the language-neutral terms. In the absence of this requirement, metadata consumers would need to know which terms are language-neutral and merge these terms from all provided metadataLanguages into a single record. Metadata consumers may re-combine the information based on the dcterms:identifier that identifies the multimedia resource. Nothing in this document would, however, prevent an implementer, e. g. of an XML-Schema representation, from providing a fully hierarchical schema in which language neutral terms occur only a single time, and only the language-specific terms are repeated in a way that unambigously relates them to a metadata language. In RDF it may be a simple repetition of plain literals associated with a language (e.g., xml:lang attribute in RDF/XML). The language attribute would then be required in Audiovisual Core and would replace ac:metadataLanguage.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/metadataLanguageLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/metadataLanguageLiteral-2023-09-05

metadataLanguageIRI

Title (Label)	Metadata Language IRI
Namespace	ac
Table:	Media
Description	The URI of the language of description and other metadata (but not necessarily of the image itself).
Comments	Recommended best practice is to use the ISO639-2 list of URIs for ISO 3-letter language codes, http://id.loc.gov/vocabulary/iso639-2. At least one of ac:metadataLanguage and ac:metadataLanguageLiteral should be supplied but, when feasible, supplying both might make the metadata more widely useful. They must specify the same language. In case of ambiguity, ac:metadataLanguage prevails. This is NOT dcterms:language, which is about the resource, not the metadata. Metadata Language is deliberately single-valued, imposing on unstructured serializations a requirement that multi-lingual metadata be represented as separate, complete, metadata records. Audiovisual Core requires that each record also contains the language-neutral terms. In the absence of this requirement, metadata consumers would need to know which terms are language-neutral and merge these terms from all provided metadataLanguages into a single record. Metadata consumers may re-combine the information based on the dcterms:identifier that identifies the multimedia resource. Nothing in this document would, however, prevent an implementer, e. g. of an XML-Schema representation, from providing a fully hierarchical schema in which language neutral terms occur only a single time, and only the language-specific terms are repeated in a way that unambigously relates them to a metadata language. In RDF it may be a simple repetition of plain literals associated with a language (e.g., xml:lang attribute in RDF/XML). The language attribute would then be required in Audiovisual Core and would replace ac:metadataLanguage.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/metadataLanguage
dcterms:references	http://rs.tdwg.org/ac/terms/version/metadataLanguage-2023-09-05

providerManagedID

Title (Label)	Provider-managed ID
Namespace	ac
Table:	Media
Description	A free-form identifier (a simple number, an alphanumeric code, a URL, etc.) for the resource that is unique and meaningful primarily for the data provider.
Comments	Ideally, this would be a globally unique identifier (GUID), but the provider is encouraged to supply any form of identifier that simplifies communications on resources within their project and helps to locate individual data items in the provider's data repositories. It is the provider's decision whether to expose this value or not.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/providerManagedID
dcterms:references	http://rs.tdwg.org/ac/terms/version/providerManagedID-2020-01-27

available

Title (Label)	Available
Namespace	dcterms
Table:	Media
Description	Date (often a range) that the resource became or will become available.
Comments	The date (often a range) that the resource became or will become available. The date and time MUST comply with the World Wide Web Consortium (W3C) datetime practice, https://www.w3.org/TR/NOTE-datetime, which requires that date and time representation correspond to ISO 8601:1998, but with year fields always comprising 4 digits. This makes datetime records compliant with 8601:2004, https://www.iso.org/standard/40874.html. AC datetime values MAY also follow 8601:2004 for ranges by separating two IS0 8601 datetime fields by a solidus ("forward slash", '/'). A use case is the harvesting of metadata published before the media are available, which are pending a formal publication elsewhere. One important example is the case of metadata that documents an occurrence, which metadata harvesters might exploit without use of the media. See also the wikipedia IS0 8601 entry, https://en.wikipedia.org/wiki/ISO_8601, for further explanation and examples.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/available

hasServiceAccessPoint

Title (Label)	Service Access Point
Namespace	ac
Table:	Media
Description	In a chosen serialization (RDF, XML Schema, etc.) the potentially multiple service access points (e.g., for different resolutions of an image) might be provided in a referenced or in a nested object.
Comments	This property identifies one such access point. That is, each of potentially multiple values of hasServiceAccessPoint identifies a set of representation-dependent metadata using the properties defined under the Service Access Point Vocabulary section of the Audiovisual Core Term List document. Some serializations may flatten the model of service-access points by (a) dropping ac:hasServiceAccessPoint, ac:variant and ac:variantLiteral, (b) repeating properties from the Service Access Point Vocabulary and prefixing them with values of ac:variantLiteral. If such a flat serialization is necessary for services, we recommend to select from among term names of the form "AB" where "A" is one of thumbnail, trailer, lowerQuality, mediumQuality, goodQuality, bestQuality, offline and "B" is one of AccessURI, Format, Extent, FurtherInformationURL, LicensingException, ServiceExpectation (example: thumbnailAccessURI). Implementers in specific constraint languages such as XML Schema or RDF may wish to make Access URI and perhaps dcterms:format mandatory on instances of the service access point.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/hasServiceAccessPoint
dcterms:references	http://rs.tdwg.org/ac/terms/version/hasServiceAccessPoint-2023-09-05

serviceExpectation

Title (Label)	Service Expectation
Namespace	ac
Table:	Media
Description	A term that describes what service expectations users may have of the ac:accessURI.
Comments	Recommended terms include online (denotes that the URL is expected to deliver the resource), authenticate (denotes that the URL delivers a login or other authentication interface requiring completion before delivery of the resource) published (non digital, denotes that the URL is the identifier of a non-digital published work, for example a doi.) Communities should develop their own controlled vocabularies for ac:serviceExpectation.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/serviceExpectation
dcterms:references	http://rs.tdwg.org/ac/terms/version/serviceExpectation-2023-09-05

accessURI

Title (Label)	Access URI
Namespace	ac
Table:	Media
Description	A URI that uniquely identifies a service that provides a representation of the underlying resource.
Comments	If this resource can be acquired by an http request, its http URL SHOULD be given. If not, but it has some URI in another URI scheme, that MAY be given here. Value might point to something offline, such as a published CD, etc. For example, the doi of a published CD would be a suitable value.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/accessURI
dcterms:references	http://rs.tdwg.org/ac/terms/version/accessURI-2020-01-27

format

Title (Label)	Format
Namespace	dc
Table:	Media
Description	The file format, physical medium, or dimensions of the resource, denoted by a controlled value string.
Comments	A controlled value string describing the technical format of the resource (file format or physical medium). The string SHOULD be a controlled value from the Audiovisual Core Controlled Vocabulary for Dublin Core dcterms:format, although it MAY be any Media Type (MIME type) value from the IANA list of Media Types (https://www.iana.org/assignments/media-types/media-types.xhtml) or any commonly used file extension string. Human-readable information about the Controlled Vocabulary for format is at http://rs.tdwg.org/ac/doc/format/. This term can be used to describe offline digital content. In cases where the provided Service Access Point URL includes a standard file extension from which the format can be inferred, it is permissible to not provide a value for this property. See also the entry for dcterms:format in the Audiovisual Core term list document and see the DCMI FAQ on DC and DCTERMS Namespaces, https://web.archive.org/web/20171126043657/https://github.com/dcmi/repository/blob/master/mediawiki_wiki/FAQ/DC_and_DCTERMS_Namespaces.md, for discussion of the rationale for terms in two namespaces. It is best practice to use dcterms:format instead of dc:format whenever practical. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/format
dcterms:references	http://dublincore.org/usage/terms/history/#format-007

formatIRI

Title (Label)	Format IRI
Namespace	dcterms
Table:	Media
Description	The file format, physical medium, or dimensions of the resource, denoted by an IRI.
Comments	An IRI denoting the technical format of the resource (file format or physical medium). The IRI SHOULD be from the Audiovisual Core Controlled Vocabulary for Dublin Core dcterms:format. Human-readable information about the Controlled Vocabulary for dcterms:format is at http://rs.tdwg.org/ac/doc/format/. In cases where an IRI for the format does not exist in the controlled vocabulary, a provider can omit this property and provide a media type or file extension value for dc:format. See the DCMI FAQ on DC and DCTERMS Namespaces, https://web.archive.org/web/20171126043657/https://github.com/dcmi/repository/blob/master/mediawiki_wiki/FAQ/DC_and_DCTERMS_Namespaces.md, for discussion of the rationale for terms in two namespaces. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/format

variantLiteral

Title (Label)	Variant Literal
Namespace	ac
Table:	Media
Description	The category describing this Service Access Point variant, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:variant. Human-readable information about the Controlled Vocabulary for ac:variant is at http://rs.tdwg.org/ac/doc/variant/. It is best practice to use ac:variant instead of ac:variantLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/variantLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/variantLiteral-2023-09-05

variantIRI

Title (Label)	Variant IRI
Namespace	ac
Table:	Media
Description	The category describing this Service Access Point variant, denoted by an IRI.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:variant. Human-readable information about the Controlled Vocabulary for ac:variant is at http://rs.tdwg.org/ac/doc/variant/. In text-based systems such as tables, IRI values MUST be in unabbreviated form.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/variant
dcterms:references	http://rs.tdwg.org/ac/terms/version/variant-2023-09-05

variantDescription

Title (Label)	Variant Description
Namespace	ac
Table:	Media
Description	Text that describes this Service Access Point variant.
Comments	Most variants (thumb, low-res, high-res) are self-explanatory and it is best practice to leave this property empty if no special description is needed. It is provided for cases that require additional information (e.g., video shortened instead of simply quality reduced).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/variantDescription
dcterms:references	http://rs.tdwg.org/ac/terms/version/variantDescription-2020-01-27

PixelXDimension

Title (Label)	Image Width
Namespace	exif
Table:	Media
Description	Information specific to compressed data. When a compressed file is recorded, the valid width of the meaningful image shall be recorded in this tag, whether or not there is padding data or a restart marker.
Comments	The width in pixels of the media specified by the access point. Contrary to the definition, in Audiovisual Core, this term MAY be used with uncompressed files. Audiovisual Core uses this term for any image type, including those to which EXIF does not apply and those that are not a compressed file type like JPEG.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://ns.adobe.com/exif/1.0/PixelXDimension

PixelYDimension

Title (Label)	Image Height
Namespace	exif
Table:	Media
Description	Information specific to compressed data. When a compressed file is recorded, the valid height of the meaningful image shall be recorded in this tag, whether or not there is padding data or a restart marker.
Comments	The height in pixels of the media specified by the access point. Contrary to the definition, in Audiovisual Core, this term MAY be used with uncompressed files. Audiovisual Core uses this term for any image type, including those to which EXIF does not apply and those that are not a compressed file type like JPEG.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://ns.adobe.com/exif/1.0/PixelYDimension

hashFunction

Title (Label)	Hash Function
Namespace	ac
Table:	Media
Description	The cryptographic hash function used to compute the value given in the ac:hashValue.
Comments	Recommended values include MD5, SHA-1, SHA-224,SHA-256, SHA-384, SHA-512, SHA-512/224 and SHA-512/256
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/hashFunction
dcterms:references	http://rs.tdwg.org/ac/terms/version/hashFunction-2020-01-27

hashValue

Title (Label)	Hash Value
Namespace	ac
Table:	Media
Description	The value computed by an ac:hashFunction applied to the media that will be delivered at the access point.
Comments	Best practice is to also specify the ac:hash Function using one of the standard literals from the Notes there.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/hashValue
dcterms:references	http://rs.tdwg.org/ac/terms/version/hashValue-2020-01-27

furtherInformationURL

Title (Label)	Further Information URL
Namespace	ac
Table:	Media
Description	The URL of a Web site that provides additional information about the version of the ac:Media resource that is provided by the ac:hasServiceAccessPoint.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/furtherInformationURL
dcterms:references	http://rs.tdwg.org/ac/terms/version/furtherInformationURL-2020-01-27

commenterLiteral

Title (Label)	Commenter Literal
Namespace	ac
Table:	Media
Description	A name of a dcterms:Agent primarily responsible for providing the ac:comments
Comments	See also ac:reviewerComments for the distinction between ac:comments and ac:reviewerComments. See also the entry for ac:commenter and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Examples	`anonymous`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/commenterLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/commenterLiteral-2023-09-05

commenterID

Title (Label)	Commenter ID
Namespace	ac
Table:	Media
Description	An identifier for a dcterms:Agent primarily responsible for providing the ac:comments.
Comments	Implementers and communities of practice MAY produce restrictions or recommendations on the choice of vocabularies. See also ac:reviewerComments for the distinction between ac:comments and ac:reviewerComments. See also the entry for ac:commenterLiteral and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/commenter
dcterms:references	http://rs.tdwg.org/ac/terms/version/commenter-2023-09-05

comments

Title (Label)	Comments
Namespace	ac
Table:	Media
Description	Any comment provided on the ac:Media resource, as free-form text.
Comments	Best practice would also identify the ac:commenter. Comments may refer to the resource itself (e. g., asserting a taxon name or location of a biological subject in an image), or to the relation between resource and associated metadata (e. g., asserting that the taxon name given in the metadata is wrong, without asserting a positive identification). There is a separate item from ac:reviewerComments, which is defined more as an expert-level review. Implementers or communities of practice might establish conventions about the meaning of the absence of an ac:commenter, but this specification is silent on that matter.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/comments
dcterms:references	http://rs.tdwg.org/ac/terms/version/comments-2020-01-27

Rating

Title (Label)	Rating
Namespace	xmp
Table:	Media
Description	A user-assigned rating for this file. The value shall be -1 or in the range [0..5], where -1 indicates "rejected" and 0 indicates "unrated". If xmp:Rating is not present, a value of 0 should be assumed.
Comments	A rating for an ac:Media resource, provided by record originators or editors, with '1' (worst) to '5' (best). Anticipated usage is for a typical 'star rating' UI, with the addition of a notion of rejection. Values MAY be decimal numbers in the permitted range. The origin of the rating is not communicated. It may, e. g., be based on user feedback or on editorial ratings. By "user-assigned" is meant assigned by the originator or editor of the record using the term.
Examples	`1` `5`
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/Rating

reviewerLiteral

Title (Label)	Reviewer Literal
Namespace	ac
Table:	Media
Description	A name of a dcterms:Agent primarily responsible for providing the ac:reviewerComments
Comments	If present, then resource is peer-reviewed, even if ac:reviewerComments is absent or empty. Its presence tells whether an expert in the subject featured in the media has reviewed an ac:Media resource or collection and approved its metadata description; MUST display a name or the literal "anonymous" (= anonymously reviewed). Provider is asserting they accept this review as competent. See also ac:reviewer and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/reviewerLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/reviewerLiteral-2023-09-05

reviewerID

Title (Label)	Reviewer ID
Namespace	ac
Table:	Media
Description	An identifier for a dcterms:Agent primarily responsible for providing the ac:reviewerComments
Comments	If present, then resource is peer-reviewed, even if ac:reviewerComments is absent or empty. Its presence tells whether an expert in the subject featured in the media has reviewed an ac:Media resource or collection and approved its metadata description; MUST display a name or the literal "anonymous" (= anonymously reviewed). Provider is asserting they accept this review as competent. See also ac:reviewerLiteral and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/reviewer
dcterms:references	http://rs.tdwg.org/ac/terms/version/reviewer-2023-09-05

reviewerComments

Title (Label)	Reviewer Comments
Namespace	ac
Table:	Media
Description	Any comment provided by a reviewer with expertise in the subject, as free-form text.
Comments	Reviewer Comments may refer to the resource itself (e. g., asserting a taxon name or location of a biological subject in an image), or to the relation between resource and associated metadata (e. g., asserting that the taxon name given in the metadata is wrong, without asserting a positive identification). There is a separate item "Comments" for text from commenters of unrecorded expertise.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/reviewerComments
dcterms:references	http://rs.tdwg.org/ac/terms/version/reviewerComments-2020-01-27

physicalSetting

Title (Label)	Physical Setting
Namespace	ac
Table:	Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting
dcterms:references	http://rs.tdwg.org/ac/terms/version/physicalSetting-2020-01-27

subjectCategory

Title (Label)	Subject Category
Namespace	dwc
Table:	Media
Description	A category for the content of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/subjectCategory

subjectCategoryIRI

Title (Label)	Subject Category IRI
Namespace	dwciri
Table:	Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/subjectCategoryIRI

subjectCategorySource

Title (Label)	Subject Category Source
Namespace	ac
Table:	Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Comments	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategorySource
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectCategorySource-2020-01-27

tag

Title (Label)	Tag
Namespace	ac
Table:	Media
Description	General keywords or tags.
Comments	Tags may be multi-worded phrases. Where scientific names, common names, geographic locations, etc. are separable, those should go into the more specific coverage metadata items provided further below. Examples: "flower diagram". Character or part keywords like "leaf", or "flower color" are especially desirable.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/tag
dcterms:references	http://rs.tdwg.org/ac/terms/version/tag-2020-01-27

subjectPartLiteral

Title (Label)	Subject Part Literal
Namespace	ac
Table:	Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPartLiteral-2023-09-05

subjectPartIRI

Title (Label)	Subject Part IRI
Namespace	ac
Table:	Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPart-2023-09-05

subjectOrientationLiteral

Title (Label)	Subject Orientation Literal
Namespace	ac
Table:	Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientationLiteral-2023-09-05

subjectOrientationIRI

Title (Label)	Subject Orientation IRI
Namespace	ac
Table:	Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientation-2023-09-05

startTime

Title (Label)	Start Time in Seconds
Namespace	ac
Table:	Media
Description	The beginning of a temporal region, specified as an absolute offset relative to the beginning of an ac:Media resource (this corresponds to Normal Play Time RFC 2326), specified as seconds, with an optional fractional part to indicate milliseconds or finer.
Comments	This term MUST only be applied to a region of interest.
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/startTime
dcterms:references	http://rs.tdwg.org/ac/terms/version/startTime-2021-10-05

endTime

Title (Label)	End Time in Seconds
Namespace	ac
Table:	Media
Description	The end of a temporal region, specified as an absolute offset relative to the beginning of an ac:Media resource (this corresponds to Normal Play Time RFC 2326), specified as seconds, with an optional fractional part to indicate milliseconds or finer.
Comments	This term MUST only be applied to a region of interest.
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/endTime
dcterms:references	http://rs.tdwg.org/ac/terms/version/endTime-2021-10-05

startTimestamp

Title (Label)	Start Time Stamp
Namespace	ac
Table:	Media
Description	The beginning of a temporal region, specified as real-world clock time ISO 8601 timestamps, using UTC timezone, with an optional fractional part to indicate milliseconds or finer. There is no limit on the number of decimal places for the decimal fraction.
Comments	This term MAY be applied to a region of interest or an entire media item.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/startTimestamp
dcterms:references	http://rs.tdwg.org/ac/terms/version/startTimestamp-2021-10-05

endTimestamp

Title (Label)	End Time Stamp
Namespace	ac
Table:	Media
Description	The end of a temporal region, specified as real-world clock time ISO 8601 timestamps, using UTC timezone, with an optional fractional part to indicate milliseconds or finer. There is no limit on the number of decimal places for the decimal fraction.
Comments	This term MAY be applied to a region of interest or an entire media item.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/endTimestamp
dcterms:references	http://rs.tdwg.org/ac/terms/version/endTimestamp-2021-10-05

mediaDuration

Title (Label)	Media Duration
Namespace	ac
Table:	Media
Description	The playback duration of an audio or video file in seconds.
Comments	This might be different from the time in seconds calculated as the difference of ac:endTimestamp and ac:startTimestamp if ac:mediaSpeed is not equal to 1.
Type	number
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/mediaDuration
dcterms:references	http://rs.tdwg.org/ac/terms/version/mediaDuration-2021-10-05

mediaSpeed

Title (Label)	Media Speed
Namespace	ac
Table:	Media
Description	The decimal fraction representing the natural speed over the encoded speed.
Comments	If a value for ac:mediaSpeed is not provided, applications SHOULD assume that 1.0 is the value. For example, in a time-lapse recording where 60 seconds of natural time is represented in 1 second of media this would be 60. In a time-expanded recording where 1 second of recording is represented in 5 seconds of media, this would be 0.2.
Examples	`60` `0.2`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/mediaSpeed
dcterms:references	http://rs.tdwg.org/ac/terms/version/mediaSpeed-2021-10-05

freqHigh

Title (Label)	Upper frequency bound
Namespace	ac
Table:	Media
Description	The highest frequency of the phenomena reflected in the multimedia item or Region of Interest.
Comments	Numeric value in hertz (Hz). This term refers to the sound events depicted and not to the constraints of the recording medium, so are in principle independent from sampleRate. If dwc:scientificName is specified and if applied to the entire multimedia item, these frequency bounds refer to the sounds of the species given in the dwc:scientificName throughout the whole recording. Although many users will specify both freqLow and freqHigh, it is permitted to specify just one or the other, for example if only one of the bounds is discernible.
Examples	`60`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/freqHigh
dcterms:references	http://rs.tdwg.org/ac/terms/version/freqHigh-2021-10-05

freqLow

Title (Label)	Lower frequency bound
Namespace	ac
Table:	Media
Description	The lowest frequency of the phenomena reflected in the multimedia item or Region of Interest.
Comments	Numeric value in hertz (Hz). This term refers to the sound events depicted and not to the constraints of the recording medium, so are in principle independent from sampleRate. If dwc:scientificName is specified and if applied to the entire multimedia item, these frequency bounds refer to the sounds of the species given in the dwc:scientificName throughout the whole recording. Although many users will specify both freqLow and freqHigh, it is permitted to specify just one or the other, for example if only one of the bounds is discernible.
Examples	`60`
Type	number
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/freqLow
dcterms:references	http://rs.tdwg.org/ac/terms/version/freqLow-2021-10-05

xFrac

Title (Label)	Fractional X
Namespace	ac
Table:	Media
Description	The horizontal position of a reference point, measured from the left side of an ac:Media resource and expressed as a decimal fraction of the width of an ac:Media resource.
Comments	A valid value MUST be greater than or equal to zero and less than or equal to one. The precision of this value SHOULD be great enough that when the ac:xFrac value is multiplied by the exif:PixelXDimension of the Best Quality variant of the Service Access point, rounding to the nearest integer results in the same horizontal pixel location originally used to define the point. This point can serve as the horizontal position of the upper left corner of a bounding rectangle, or as the center of a circle.
Examples	`0.5` `1`
Type	number
Constraints	{"minimum": 0, "maximum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/xFrac
dcterms:references	http://rs.tdwg.org/ac/terms/version/xFrac-2021-10-05

yFrac

Title (Label)	Fractional Y
Namespace	ac
Table:	Media
Description	The vertical position of a reference point, measured from the top of an ac:Media resource and expressed as a decimal fraction of the height of an ac:Media resource.
Comments	A valid value MUST be greater than or equal to zero and less than or equal to one. The precision of this value SHOULD be great enough that when the ac:yFrac value is multiplied by the exif:PixelYDimension of the Best Quality variant of the Service Access point, rounding to the nearest integer results in the same vertical pixel originally used to define the point. This point can serve as the vertical position of the upper left corner of a bounding rectangle, or as the center of a circle.
Examples	`0.5` `1`
Type	number
Constraints	{"minimum": 0, "maximum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/yFrac
dcterms:references	http://rs.tdwg.org/ac/terms/version/yFrac-2021-10-05

heightFrac

Title (Label)	Fractional Height
Namespace	ac
Table:	Media
Description	The height of the bounding rectangle, expressed as a decimal fraction of the height of an ac:Media resource.
Comments	The sum of a valid value plus ac:yFrac MUST be greater than zero and less than or equal to one. The precision of this value SHOULD be great enough that when ac:heightFrac and ac:yFrac are used with the exif:PixelYDimension of the Best Quality variant of the Service Access point to calculate the lower right corner of the rectangle, rounding to the nearest integer results in the same vertical pixel originally used to define the point. This term MUST NOT be used with ac:radius to define a region of interest. Zero-sized bounding rectangles are not allowed. To designate a point, use the radius option with a zero value.
Examples	`0.5` `1`
Type	number
Constraints	{"minimum": 0, "maximum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/heightFrac
dcterms:references	http://rs.tdwg.org/ac/terms/version/heightFrac-2021-10-05

widthFrac

Title (Label)	Fractional Width
Namespace	ac
Table:	Media
Description	The width of the bounding rectangle, expressed as a decimal fraction of the width of an ac:Media resource.
Comments	The sum of a valid value plus ac:xFrac MUST be greater than zero and less than or equal to one. The precision of this value SHOULD be great enough that when ac:widthFrac and ac:xFrac are used with the exif:PixelXDimension of the Best Quality variant of the Service Access point to calculate the lower right corner of the rectangle, rounding to the nearest integer results in the same horizontal pixel originally used to define the point. This term MUST NOT be used with ac:radius to define a region of interest. Zero-sized bounding rectangles are not allowed. To designate a point, use the radius option with a zero value.
Examples	`0.5` `1`
Type	number
Constraints	{"minimum": 0, "maximum": 1}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/widthFrac
dcterms:references	http://rs.tdwg.org/ac/terms/version/widthFrac-2021-10-05

radius

Title (Label)	Radius
Namespace	ac
Table:	Media
Description	The radius of a bounding circle or arc, expressed as a fraction of the width of an ac:Media resource.
Comments	A valid value MUST be greater than or equal to zero. A valid value MAY cause the designated circle to extend beyond the bounds of an ac:Media resource. In that case, the arc within an ac:Media resource plus the bounds of an ac:Media resource specify the region of interest. This term MUST NOT be used with ac:widthFrac or ac:heightFrac to define a region of interest. This term may be used with ac:xFrac and ac:yFrac to define a point. In that case, the implication is that the point falls on some object of interest within an ac:Media resource, but nothing more can be assumed about the bounds of that object.
Examples	`100`
Type	integer
Constraints	{"minimum": 0}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/radius
dcterms:references	http://rs.tdwg.org/ac/terms/version/radius-2021-10-05

Agent Media

Identifier: http://rs.tdwg.org/dwc/dwc-dp/agent-media

Description: A dcterms:Agent as content in an ac:Media entity.

Examples:

`a person shown in a photograph`

`a group of people in a video`

dcterms:isVersionOf: http://example.com/term-pending//agent-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
mediaID	this media instance	media	mediaID	Yes
agentID	about	agent	agentID	Yes

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Agent Media
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Agent Media
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

subjectCategory

Title (Label)	Subject Category
Namespace	dwc
Table:	Agent Media
Description	A category for the content of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/subjectCategory

subjectCategoryIRI

Title (Label)	Subject Category IRI
Namespace	dwciri
Table:	Agent Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/subjectCategoryIRI

subjectCategorySource

Title (Label)	Subject Category Source
Namespace	ac
Table:	Agent Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Comments	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategorySource
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectCategorySource-2020-01-27

subjectPartLiteral

Title (Label)	Subject Part Literal
Namespace	ac
Table:	Agent Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPartLiteral-2023-09-05

subjectPart

Title (Label)	Subject Part
Namespace	ac
Table:	Agent Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPart-2023-09-05

subjectOrientationLiteral

Title (Label)	Subject Orientation Literal
Namespace	ac
Table:	Agent Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientationLiteral-2023-09-05

subjectOrientation

Title (Label)	Subject Orientation
Namespace	ac
Table:	Agent Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientation-2023-09-05

physicalSetting

Title (Label)	Physical Setting
Namespace	ac
Table:	Agent Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting
dcterms:references	http://rs.tdwg.org/ac/terms/version/physicalSetting-2020-01-27

Chronometric Age Media

Identifier: http://rs.tdwg.org/dwc/dwc-dp/chronometric-age-media

Description: A chrono:ChronometricAge as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//chronometric-age-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
mediaID	this media instance	media	mediaID	Yes
chronometricAgeID	about	chronometric-age	chronometricAgeID	Yes

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Chronometric Age Media
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

chronometricAgeID

Title (Label)	Chronometric Age ID
Namespace	chrono
Table:	Chronometric Age Media
Description	An identifier for a chrono:ChronometricAge.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://www.canadianarchaeology.ca/samples/70673`
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeID-2025-06-12

subjectCategory

Title (Label)	Subject Category
Namespace	dwc
Table:	Chronometric Age Media
Description	A category for the content of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/subjectCategory

subjectCategoryIRI

Title (Label)	Subject Category IRI
Namespace	dwciri
Table:	Chronometric Age Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/subjectCategoryIRI

subjectCategorySource

Title (Label)	Subject Category Source
Namespace	ac
Table:	Chronometric Age Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Comments	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategorySource
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectCategorySource-2020-01-27

subjectPartLiteral

Title (Label)	Subject Part Literal
Namespace	ac
Table:	Chronometric Age Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPartLiteral-2023-09-05

subjectPart

Title (Label)	Subject Part
Namespace	ac
Table:	Chronometric Age Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPart-2023-09-05

subjectOrientationLiteral

Title (Label)	Subject Orientation Literal
Namespace	ac
Table:	Chronometric Age Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientationLiteral-2023-09-05

subjectOrientation

Title (Label)	Subject Orientation
Namespace	ac
Table:	Chronometric Age Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientation-2023-09-05

physicalSetting

Title (Label)	Physical Setting
Namespace	ac
Table:	Chronometric Age Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting
dcterms:references	http://rs.tdwg.org/ac/terms/version/physicalSetting-2020-01-27

Event Media

Identifier: http://rs.tdwg.org/dwc/dwc-dp/event-media

Description: A dwc:Event as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//event-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
mediaID	this media instance	media	mediaID	Yes
eventID	about	event	eventID	Yes

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Event Media
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Event Media
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

subjectCategory

Title (Label)	Subject Category
Namespace	dwc
Table:	Event Media
Description	A category for the content of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/subjectCategory

subjectCategoryIRI

Title (Label)	Subject Category IRI
Namespace	dwciri
Table:	Event Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/subjectCategoryIRI

subjectCategorySource

Title (Label)	Subject Category Source
Namespace	ac
Table:	Event Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Comments	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategorySource
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectCategorySource-2020-01-27

subjectPartLiteral

Title (Label)	Subject Part Literal
Namespace	ac
Table:	Event Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPartLiteral-2023-09-05

subjectPart

Title (Label)	Subject Part
Namespace	ac
Table:	Event Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPart-2023-09-05

subjectOrientationLiteral

Title (Label)	Subject Orientation Literal
Namespace	ac
Table:	Event Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientationLiteral-2023-09-05

subjectOrientation

Title (Label)	Subject Orientation
Namespace	ac
Table:	Event Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientation-2023-09-05

physicalSetting

Title (Label)	Physical Setting
Namespace	ac
Table:	Event Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting
dcterms:references	http://rs.tdwg.org/ac/terms/version/physicalSetting-2020-01-27

Geological Context Media

Identifier: http://rs.tdwg.org/dwc/dwc-dp/geological-context-media

Description: A dwc:GeologicalContext as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//geological-context-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
mediaID	this media instance	media	mediaID	Yes
geologicalContextID	about	geological-context	geologicalContextID	Yes

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Geological Context Media
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

geologicalContextID

Title (Label)	Geological Context ID
Namespace	dwc
Table:	Geological Context Media
Description	An identifier for a dwc:GeologicalContext.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/geologicalContextID

subjectCategory

Title (Label)	Subject Category
Namespace	dwc
Table:	Geological Context Media
Description	A category for the content of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/subjectCategory

subjectCategoryIRI

Title (Label)	Subject Category IRI
Namespace	dwciri
Table:	Geological Context Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/subjectCategoryIRI

subjectCategorySource

Title (Label)	Subject Category Source
Namespace	ac
Table:	Geological Context Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Comments	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategorySource
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectCategorySource-2020-01-27

subjectPartLiteral

Title (Label)	Subject Part Literal
Namespace	ac
Table:	Geological Context Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPartLiteral-2023-09-05

subjectPart

Title (Label)	Subject Part
Namespace	ac
Table:	Geological Context Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPart-2023-09-05

subjectOrientationLiteral

Title (Label)	Subject Orientation Literal
Namespace	ac
Table:	Geological Context Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientationLiteral-2023-09-05

subjectOrientation

Title (Label)	Subject Orientation
Namespace	ac
Table:	Geological Context Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientation-2023-09-05

physicalSetting

Title (Label)	Physical Setting
Namespace	ac
Table:	Geological Context Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting
dcterms:references	http://rs.tdwg.org/ac/terms/version/physicalSetting-2020-01-27

Material Media

Identifier: http://rs.tdwg.org/dwc/dwc-dp/material-media

Description: A dwc:MaterialEntity as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//material-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
mediaID	this media instance	media	mediaID	Yes
materialEntityID	about	material	materialEntityID	Yes

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Material Media
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Material Media
Description	An identifier for a dwc:MaterialEntity.
Comments	Values of dwc:materialEntityID are intended to uniquely and persistently identify a particular dwc:MaterialEntity within some context. Examples of context include a particular sample collection, an organization, or the worldwide scale. Recommended best practice is to use a persistent, globally unique identifier. The identifier is bound to a physical object (a dwc:MaterialEntity) as opposed to a particular digital record (representation) of that physical object.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

subjectCategory

Title (Label)	Subject Category
Namespace	dwc
Table:	Material Media
Description	A category for the content of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/subjectCategory

subjectCategoryIRI

Title (Label)	Subject Category IRI
Namespace	dwciri
Table:	Material Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/subjectCategoryIRI

subjectCategorySource

Title (Label)	Subject Category Source
Namespace	ac
Table:	Material Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Comments	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategorySource
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectCategorySource-2020-01-27

subjectPartLiteral

Title (Label)	Subject Part Literal
Namespace	ac
Table:	Material Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPartLiteral-2023-09-05

subjectPart

Title (Label)	Subject Part
Namespace	ac
Table:	Material Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPart-2023-09-05

subjectOrientationLiteral

Title (Label)	Subject Orientation Literal
Namespace	ac
Table:	Material Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientationLiteral-2023-09-05

subjectOrientation

Title (Label)	Subject Orientation
Namespace	ac
Table:	Material Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientation-2023-09-05

physicalSetting

Title (Label)	Physical Setting
Namespace	ac
Table:	Material Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting
dcterms:references	http://rs.tdwg.org/ac/terms/version/physicalSetting-2020-01-27

Occurrence Media

Identifier: http://rs.tdwg.org/dwc/dwc-dp/occurrence-media

Description: A dwc:Occurrence as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//occurrence-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
mediaID	this media instance	media	mediaID	Yes
occurrenceID	about	occurrence	occurrenceID	Yes

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Occurrence Media
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

occurrenceID

Title (Label)	Occurrence ID
Namespace	dwc
Table:	Occurrence Media
Description	An identifier for a dwc:Occurrence.
Comments	Recommended best practice is to use a persistent, globally unique identifier. In the absence of a persistent global unique identifier, construct one from a combination of identifiers in the record that will most closely make a dwc:occurrenceID globally unique.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

subjectCategory

Title (Label)	Subject Category
Namespace	dwc
Table:	Occurrence Media
Description	A category for the content of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/subjectCategory

subjectCategoryIRI

Title (Label)	Subject Category IRI
Namespace	dwciri
Table:	Occurrence Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/subjectCategoryIRI

subjectCategorySource

Title (Label)	Subject Category Source
Namespace	ac
Table:	Occurrence Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Comments	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategorySource
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectCategorySource-2020-01-27

subjectPartLiteral

Title (Label)	Subject Part Literal
Namespace	ac
Table:	Occurrence Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPartLiteral-2023-09-05

subjectPart

Title (Label)	Subject Part
Namespace	ac
Table:	Occurrence Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by an IRI.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPart-2023-09-05

subjectOrientationLiteral

Title (Label)	Subject Orientation Literal
Namespace	ac
Table:	Occurrence Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientationLiteral-2023-09-05

subjectOrientation

Title (Label)	Subject Orientation
Namespace	ac
Table:	Occurrence Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientation-2023-09-05

physicalSetting

Title (Label)	Physical Setting
Namespace	ac
Table:	Occurrence Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting
dcterms:references	http://rs.tdwg.org/ac/terms/version/physicalSetting-2020-01-27

Organism Interaction Media

Identifier: http://rs.tdwg.org/dwc/dwc-dp/organism-interaction-media

Description: A dwc:OrganismInteraction as content in an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//organism-interaction-media

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
mediaID	this media instance	media	mediaID	Yes
organismInteractionID	about	organism-interaction	organismInteractionID	Yes

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Organism Interaction Media
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

organismInteractionID

Title (Label)	Organism Interaction ID
Namespace	dwc
Table:	Organism Interaction Media
Description	An identifier for a dwc:OrganismInteraction.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/organismInteractionID

subjectCategory

Title (Label)	Subject Category
Namespace	dwc
Table:	Organism Interaction Media
Description	A category for the content of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/subjectCategory

subjectCategoryIRI

Title (Label)	Subject Category IRI
Namespace	dwciri
Table:	Organism Interaction Media
Description	An IRI of a controlled vocabulary value for the subject category of an ac:Media resource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/subjectCategoryIRI

subjectCategorySource

Title (Label)	Subject Category Source
Namespace	ac
Table:	Organism Interaction Media
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectCategory is given.
Comments	The Audiovisual Core recommended vocabularies do not need to be cited here. There is no required linkage between individual Subject Category terms and the vocabulary; the mechanism is intended to support discovery of the normative URI for a term, but not guarantee it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectCategorySource
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectCategorySource-2020-01-27

subjectPartLiteral

Title (Label)	Subject Part Literal
Namespace	ac
Table:	Organism Interaction Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectPart. It is best practice to use ac:subjectPart instead of ac:subjectPartLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPartLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPartLiteral-2023-09-05

subjectPart

Title (Label)	Subject Part
Namespace	ac
Table:	Organism Interaction Media
Description	The portion or product of organism morphology, behaviour, environment, etc. that is either predominantly shown or particularly well exemplified by the ac:Media resource.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectPart
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectPart-2023-09-05

subjectOrientationLiteral

Title (Label)	Subject Orientation Literal
Namespace	ac
Table:	Organism Interaction Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device, denoted by a controlled value string.
Comments	Values SHOULD be selected from the Controlled Vocabulary for ac:subjectOrientation. It is best practice to use ac:subjectOrientation instead of ac:subjectOrientationLiteral whenever practical.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientationLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientationLiteral-2023-09-05

subjectOrientation

Title (Label)	Subject Orientation
Namespace	ac
Table:	Organism Interaction Media
Description	Specific orientation (= direction, view angle) of the subject represented in the ac:Media resource with respect to the acquisition device.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/subjectOrientation
dcterms:references	http://rs.tdwg.org/ac/terms/version/subjectOrientation-2023-09-05

physicalSetting

Title (Label)	Physical Setting
Namespace	ac
Table:	Organism Interaction Media
Description	The setting of the content represented in an ac:Media resource, such as images, sounds, and movies if the provider deems them relevant.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/physicalSetting
dcterms:references	http://rs.tdwg.org/ac/terms/version/physicalSetting-2020-01-27

Protocol

Identifier: http://rs.tdwg.org/dwc/dwc-dp/protocol

Description: A method used during an action.

Examples:

`a pitfall trap method for sampling ground-dwelling arthropods`

`a point-radius georeferencing method`

`a linear regression model to estimate body mass from skeletal measurements`

`a Bayesian phylogenetic inference method`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/Protocol

protocolID

Title (Label)	Protocol ID
Namespace	dwc
Table:	Protocol
Description	An identifier for a dwc:Protocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/protocolID

protocolType

Title (Label)	Protocol Type
Namespace	dwc
Table:	Protocol
Description	A category that best matches the nature of a dwc:Protocol.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`measurement` `georeference` `chronometric age` `chronometric age conversion` `sampling effort`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/protocolType

protocolName

Title (Label)	Protocol Name
Namespace	dcterms
Table:	Protocol
Description	A name of a dwc:Protocol.
Comments	`ad hoc observation`; `bottom trawl`; `point count`; `UV light trap`
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/title

protocolDescription

Title (Label)	Protocol Description
Namespace	dwc
Table:	Protocol
Description	A detailed description of a dwc:Protocol.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/protocolDescription

protocolReferences

Title (Label)	Protocol References
Namespace	eco
Table:	Protocol
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in a dwc:Protocol.
Comments	Recommended best practice is to separate multiple values in a list with space vertical bar space (` \| `).
Examples	`Penguins from space: faecal stains reveal the location of emperor penguin colonies, https://doi.org/10.1111/j.1466-8238.2009.00467.x`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/eco/terms/protocolReferences
dcterms:references	http://rs.tdwg.org/eco/terms/version/protocolReferences-2024-02-28

protocolRemarks

Title (Label)	Protocol Remarks
Namespace	dwc
Table:	Protocol
Description	Comments or notes about a dwc:Protocol.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/protocolRemarks

Chronometric Age Protocol

Identifier: http://rs.tdwg.org/dwc/dwc-dp/chronometric-age-protocol

Description: A dwc:Protocol used for a chrono:ChronometricAge.

dcterms:isVersionOf: http://example.com/term-pending//chronometric-age-protocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
chronometricAgeID	used for	chronometric-age	chronometricAgeID	Yes
protocolID	followed	protocol	protocolID	Yes

chronometricAgeID

Title (Label)	Chronometric Age ID
Namespace	chrono
Table:	Chronometric Age Protocol
Description	An identifier for a chrono:ChronometricAge.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://www.canadianarchaeology.ca/samples/70673`
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeID-2025-06-12

protocolID

Title (Label)	Protocol ID
Namespace	dwc
Table:	Chronometric Age Protocol
Description	An identifier for a dwc:Protocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/protocolID

Event Protocol

Identifier: http://rs.tdwg.org/dwc/dwc-dp/event-protocol

Description: A dwc:Protocol used for a dwc:Event.

dcterms:isVersionOf: http://example.com/term-pending//event-protocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
eventID	used during	event	eventID	Yes
protocolID	followed	protocol	protocolID	Yes

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Event Protocol
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

protocolID

Title (Label)	Protocol ID
Namespace	dwc
Table:	Event Protocol
Description	An identifier for a dwc:Protocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/protocolID

Material Protocol

Identifier: http://rs.tdwg.org/dwc/dwc-dp/material-protocol

Description: A dwc:Protocol used for a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-protocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
materialEntityID	used for	material	materialEntityID	Yes
protocolID	followed	protocol	protocolID	Yes

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Material Protocol
Description	An identifier for a dwc:MaterialEntity.
Comments	Values of dwc:materialEntityID are intended to uniquely and persistently identify a particular dwc:MaterialEntity within some context. Examples of context include a particular sample collection, an organization, or the worldwide scale. Recommended best practice is to use a persistent, globally unique identifier. The identifier is bound to a physical object (a dwc:MaterialEntity) as opposed to a particular digital record (representation) of that physical object.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

protocolID

Title (Label)	Protocol ID
Namespace	dwc
Table:	Material Protocol
Description	An identifier for a dwc:Protocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/protocolID

Occurrence Protocol

Identifier: http://rs.tdwg.org/dwc/dwc-dp/occurrence-protocol

Description: A dwc:Protocol used for a dwc:Occurrence.

dcterms:isVersionOf: http://example.com/term-pending//occurrence-protocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
occurrenceID	used during	occurrence	occurrenceID	Yes
protocolID	followed	protocol	protocolID	Yes

occurrenceID

Title (Label)	Occurrence ID
Namespace	dwc
Table:	Occurrence Protocol
Description	An identifier for a dwc:Occurrence.
Comments	Recommended best practice is to use a persistent, globally unique identifier. In the absence of a persistent global unique identifier, construct one from a combination of identifiers in the record that will most closely make a dwc:occurrenceID globally unique.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

protocolID

Title (Label)	Protocol ID
Namespace	dwc
Table:	Occurrence Protocol
Description	An identifier for a dwc:Protocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/protocolID

Survey Protocol

Identifier: http://rs.tdwg.org/dwc/dwc-dp/survey-protocol

Description: A dwc:Protocol used for an eco:Survey.

dcterms:isVersionOf: http://example.com/term-pending//survey-protocol

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
protocolID	followed	protocol	protocolID	Yes
surveyID	used during	survey	surveyID	Yes

protocolID

Title (Label)	Protocol ID
Namespace	dwc
Table:	Survey Protocol
Description	An identifier for a dwc:Protocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/protocolID

surveyID

Title (Label)	Survey ID
Namespace	dwc
Table:	Survey Protocol
Description	An identifier for a dwc:Survey.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyID

Bibliographic Resource

Identifier: http://rs.tdwg.org/dwc/dwc-dp/bibliographic-resource

Description: A book, article, or other documentary resource.

dcterms:isVersionOf: http://purl.org/dc/terms/BibliographicResource

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
parentReferenceID	part of	bibliographic-resource	referenceID	No
authorID	authored by	agent	agentID	No
editorID	edited by	agent	agentID	No
publisherID	published by	agent	agentID	No

referenceID

Title (Label)	Reference ID
Namespace	dwc
Table:	Bibliographic Resource
Description	An identifier for a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceID

parentReferenceID

Title (Label)	Parent Reference ID
Namespace	dwc
Table:	Bibliographic Resource
Description	An identifier for a dcterms:BibliographicResource that this dcterms:BibliographicResource is a part of.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/parentReferenceID

referenceType

Title (Label)	Reference Type
Namespace	dwc
Table:	Bibliographic Resource
Description	A category that best matches the nature of a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceType

bibliographicCitation

Title (Label)	Bibliographic Citation
Namespace	dcterms
Table:	Bibliographic Resource
Description	A bibliographic reference for a dcterms:BibliographicResource.
Comments	Recommended practice is to include sufficient bibliographic detail to identify the resource as unambiguously as possible. The intended usage of this term in Darwin Core is to provide the preferred way to cite the resource itself. Note that the intended usage of dcterms:references in Darwin Core, by contrast, is to point to the definitive source representation of the resource, if one is available.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/bibliographicCitation

title

Title (Label)	Title
Namespace	dc
Table:	Bibliographic Resource
Description	A name given to a resource.
Comments	Typically, a dc:title will be a name by which the resource is formally known.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/title

author

Title (Label)	Author
Namespace	dc
Table:	Bibliographic Resource
Description	A name of a dcterms:Agent primarily responsible for creating a dcterms:BibliographicResource.
Comments	Examples of a dcterms:creator include a person, an organization, or a service.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/creator

authorID

Title (Label)	Author ID
Namespace	dcterms
Table:	Bibliographic Resource
Description	An identifier for a dcterms:Agent primarily responsible for making a dcterms:BibliographicResource.
Comments	Examples of a dcterms:creator include a person, an organization, or a service.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/creator

editor

Title (Label)	Editor
Namespace	bibo
Table:	Bibliographic Resource
Description	A name of a dcterms:Agent having managerial and sometimes policy-making responsibility for the editorial part of a publishing firm or of a newspaper, magazine, or other publication.
Type	string
dcterms:isVersionOf	http://purl.org/ontology/bibo/editor

editorID

Title (Label)	Editor ID
Namespace	bibo
Table:	Bibliographic Resource
Description	An identifier for a dcterms:Agent having managerial and sometimes policy-making responsibility for the editorial part of a publishing firm or of a newspaper, magazine, or other publication.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://purl.org/ontology/bibo/editor

publisher

Title (Label)	Publisher
Namespace	dc
Table:	Bibliographic Resource
Description	A name of a dcterms:Agent responsible for making a dcterms:BibliographicResource available.
Comments	Examples of a dcterms:publisher include a person, an organization, or a service. Typically, the name of a dcterms:publisher should be used to indicate the entity.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/publisher

publisherID

Title (Label)	Publisher ID
Namespace	dcterms
Table:	Bibliographic Resource
Description	An identifier for a dcterms:Agent responsible for making a Reference available.
Comments	Examples of a dcterms:publisher include a person, an organization, or a service.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/publisher

volume

Title (Label)	Volume
Namespace	bibo
Table:	Bibliographic Resource
Description	A volume number of a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://purl.org/ontology/bibo/volume

issue

Title (Label)	Issue
Namespace	bibo
Table:	Bibliographic Resource
Description	An issue number of a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://purl.org/ontology/bibo/issue

edition

Title (Label)	Edition
Namespace	bibo
Table:	Bibliographic Resource
Description	An edition of a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://purl.org/ontology/bibo/edition

pages

Title (Label)	Pages
Namespace	bibo
Table:	Bibliographic Resource
Description	A range of pages within a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://purl.org/ontology/bibo/pages

version

Title (Label)	Version
Namespace	pav
Table:	Bibliographic Resource
Description	A version number of a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://purl.org/pav/version

issued

Title (Label)	Issued
Namespace	dcterms
Table:	Bibliographic Resource
Description	Date of formal issuance of a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/issued

accessed

Title (Label)	Accessed
Namespace	pav
Table:	Bibliographic Resource
Description	The resource is related to a source which was originally accessed or consulted on the given date as part of creating or authoring the resource. The source(s) should be specified using pav:sourceAccessedAt.
Type	string
dcterms:isVersionOf	http://purl.org/pav/sourceAccessedOn

peerReviewStatus

Title (Label)	Peer Review Status
Namespace	bibo
Table:	Bibliographic Resource
Description	An indication of whether a dcterms:BibliographicResource was peer reviewed.
Type	boolean
dcterms:isVersionOf	http://purl.org/ontology/bibo/status

referenceRemarks

Title (Label)	Reference Remarks
Namespace	dwc
Table:	Bibliographic Resource
Description	Comments or notes about a dcterms:BibliographicResource.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceRemarks

Chronometric Age Reference

Identifier: http://rs.tdwg.org/dwc/dwc-dp/chronometric-age-reference

Description: A dcterms:BibliographicResource related to a chrono:ChronometricAge.

dcterms:isVersionOf: http://example.com/term-pending//chronometric-age-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
chronometricAgeID	mentioned	chronometric-age	chronometricAgeID	Yes
referenceID	mentioned in	bibliographic-resource	referenceID	Yes

chronometricAgeID

Title (Label)	Chronometric Age ID
Namespace	chrono
Table:	Chronometric Age Reference
Description	An identifier for a chrono:ChronometricAge.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://www.canadianarchaeology.ca/samples/70673`
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeID-2025-06-12

referenceID

Title (Label)	Reference ID
Namespace	dwc
Table:	Chronometric Age Reference
Description	An identifier for a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceID

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Chronometric Age Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

Event Reference

Identifier: http://rs.tdwg.org/dwc/dwc-dp/event-reference

Description: A dcterms:BibliographicResource related to a dwc:Event.

dcterms:isVersionOf: http://example.com/term-pending//event-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
eventID	mentioned	event	eventID	Yes
referenceID	mentioned in	bibliographic-resource	referenceID	Yes

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Event Reference
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

referenceID

Title (Label)	Reference ID
Namespace	dwc
Table:	Event Reference
Description	An identifier for a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceID

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Event Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

Identification Reference

Identifier: http://rs.tdwg.org/dwc/dwc-dp/identification-reference

Description: A dcterms:BibliographicResource related to a dwc:Identification.

dcterms:isVersionOf: http://example.com/term-pending//identification-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
identificationID	used for	identification	identificationID	Yes
referenceID	used	bibliographic-resource	referenceID	Yes

identificationID

Title (Label)	Identification ID
Namespace	dwc
Table:	Identification Reference
Description	An identifier for a dwc:Protocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/identificationID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/identificationID-2023-06-28

referenceID

Title (Label)	Reference ID
Namespace	dwc
Table:	Identification Reference
Description	An identifier for a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceID

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Identification Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

Material Reference

Identifier: http://rs.tdwg.org/dwc/dwc-dp/material-reference

Description: A dcterms:BibliographicResource relatd to a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
referenceID	mentioned in	bibliographic-resource	referenceID	Yes
materialEntityID	mentioned	material	materialEntityID	Yes

referenceID

Title (Label)	Reference ID
Namespace	dwc
Table:	Material Reference
Description	An identifier for a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceID

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Material Reference
Description	An identifier for a dwc:MaterialEntity.
Comments	Values of dwc:materialEntityID are intended to uniquely and persistently identify a particular dwc:MaterialEntity within some context. Examples of context include a particular sample collection, an organization, or the worldwide scale. Recommended best practice is to use a persistent, globally unique identifier. The identifier is bound to a physical object (a dwc:MaterialEntity) as opposed to a particular digital record (representation) of that physical object.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Material Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

Molecular Protocol Reference

Identifier: http://rs.tdwg.org/dwc/dwc-dp/molecular-protocol-reference

Description: A dcterms:BibliographicResource related to a dwc:MolecularProtocol.

dcterms:isVersionOf: http://example.com/term-pending//molecular-protocol-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
referenceID	mentioned in	bibliographic-resource	referenceID	Yes
molecularProtocolID	mentioned	molecular-protocol	molecularProtocolID	Yes

referenceID

Title (Label)	Reference ID
Namespace	dwc
Table:	Molecular Protocol Reference
Description	An identifier for a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceID

molecularProtocolID

Title (Label)	Molecular Protocol ID
Namespace	dwc
Table:	Molecular Protocol Reference
Description	An identifier for a dwc:MolecularProtocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/molecularProtocolID

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Molecular Protocol Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

Occurrence Reference

Identifier: http://rs.tdwg.org/dwc/dwc-dp/occurrence-reference

Description: A dcterms:BibliographicResource related to a dwc:Occurrence.

dcterms:isVersionOf: http://example.com/term-pending//occurrence-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
occurrenceID	mentioned	occurrence	occurrenceID	Yes
referenceID	mentioned in	bibliographic-resource	referenceID	Yes

occurrenceID

Title (Label)	Occurrence ID
Namespace	dwc
Table:	Occurrence Reference
Description	An identifier for a dwc:Occurrence.
Comments	Recommended best practice is to use a persistent, globally unique identifier. In the absence of a persistent global unique identifier, construct one from a combination of identifiers in the record that will most closely make a dwc:occurrenceID globally unique.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

referenceID

Title (Label)	Reference ID
Namespace	dwc
Table:	Occurrence Reference
Description	An identifier for a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceID

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Occurrence Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

Organism Reference

Identifier: http://rs.tdwg.org/dwc/dwc-dp/organism-reference

Description: A dcterms:BibliographicResource related to a dwc:Organism.

dcterms:isVersionOf: http://example.com/term-pending//organism-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
organismID	mentioned in	organism	organismID	Yes
referenceID	mentioned	bibliographic-resource	referenceID	Yes

organismID

Title (Label)	Organism ID
Namespace	dwc
Table:	Organism Reference
Description	An identifier for a dwc:Organism.
Comments	Recommended best practice is to use a persistent, globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismID-2023-06-28

referenceID

Title (Label)	Reference ID
Namespace	dwc
Table:	Organism Reference
Description	An identifier for a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceID

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Organism Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

Organism Interaction Reference

Identifier: http://rs.tdwg.org/dwc/dwc-dp/organism-interaction-reference

Description: A dcterms:BibliographicResource related to a dwc:OrganismInteraction.

dcterms:isVersionOf: http://example.com/term-pending//organism-interaction-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
organismInteractionID	mentioned	organism-interaction	organismInteractionID	Yes
referenceID	mentioned in	bibliographic-resource	referenceID	Yes

organismInteractionID

Title (Label)	Organism Interaction ID
Namespace	dwc
Table:	Organism Interaction Reference
Description	An identifier for a dwc:OrganismInteraction.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/organismInteractionID

referenceID

Title (Label)	Reference ID
Namespace	dwc
Table:	Organism Interaction Reference
Description	An identifier for a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceID

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Organism Interaction Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

Protocol Reference

Identifier: http://rs.tdwg.org/dwc/dwc-dp/protocol-reference

Description: A dcterms:BibliographicResource related to a dwc:Protocol.

dcterms:isVersionOf: http://example.com/term-pending//protocol-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
protocolID	mentioned	protocol	protocolID	Yes
referenceID	mentioned in	bibliographic-resource	referenceID	Yes

protocolID

Title (Label)	Protocol ID
Namespace	dwc
Table:	Protocol Reference
Description	An identifier for a dwc:Protocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/protocolID

referenceID

Title (Label)	Reference ID
Namespace	dwc
Table:	Protocol Reference
Description	An identifier for a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceID

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Protocol Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

Survey Reference

Identifier: http://rs.tdwg.org/dwc/dwc-dp/survey-reference

Description: A dcterms:BibliographicResource related to a dwc:Survey.

dcterms:isVersionOf: http://example.com/term-pending//survey-reference

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
referenceID	mentioned in	bibliographic-resource	referenceID	Yes
surveyID	mentioned	survey	surveyID	Yes

referenceID

Title (Label)	Reference ID
Namespace	dwc
Table:	Survey Reference
Description	An identifier for a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/referenceID

surveyID

Title (Label)	Survey ID
Namespace	dwc
Table:	Survey Reference
Description	An identifier for a dwc:Survey.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyID

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Survey Reference
Description	A relationship of a subject resource to a dcterms:BibliographicResource.
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`cited in` `referenced`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

Chronometric Age Assertion

Identifier: http://rs.tdwg.org/dwc/dwc-dp/chronometric-age-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a chrono:ChronometricAge.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
chronometricAgeID	about	chronometric-age	chronometricAgeID	Yes
assertionByID	asserted by	agent	agentID	No
assertionProtocolID	followed	protocol	protocolID	No

chronometricAgeID

Title (Label)	Chronometric Age ID
Namespace	chrono
Table:	Chronometric Age Assertion
Description	An identifier for a chrono:ChronometricAge.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`https://www.canadianarchaeology.ca/samples/70673`
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/chrono/terms/chronometricAgeID
dcterms:references	http://rs.tdwg.org/chrono/terms/version/chronometricAgeID-2025-06-12

assertionID

Title (Label)	Assertion ID
Namespace	dwc
Table:	Chronometric Age Assertion
Description	An identifier for a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionID

verbatimAssertionType

Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table:	Chronometric Age Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Comments	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/verbatimAssertionType

assertionType

Title (Label)	Assertion Type
Namespace	dwc
Table:	Chronometric Age Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionType

assertionTypeIRI

Title (Label)	Assertion Type (IRI)
Namespace	dwciri
Table:	Chronometric Age Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionTypeIRI

assertionTypeSource

Title (Label)	Assertion Type Source
Namespace	dc
Table:	Chronometric Age Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate

Title (Label)	Assertion Made Date
Namespace	dwc
Table:	Chronometric Age Assertion
Description	A date on which a dwc:Assertion was created.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionMadeDate

assertionEffectiveDate

Title (Label)	Assertion Effective Date
Namespace	dwc
Table:	Chronometric Age Assertion
Description	A date on which a state or measurement of a dwc:Assertion was deemed to first be in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionEffectiveDate

assertionValue

Title (Label)	Assertion Value
Namespace	dwc
Table:	Chronometric Age Assertion
Description	An asserted value, if it is not numeric.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValue

assertionValueIRI

Title (Label)	Assertion Value (IRI)
Namespace	dwciri
Table:	Chronometric Age Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionValueIRI

assertionValueSource

Title (Label)	Assertion Value Source
Namespace	dc
Table:	Chronometric Age Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionValueNumeric

Title (Label)	Assertion Value Numeric
Namespace	dwc
Table:	Chronometric Age Assertion
Description	An asserted value, if it is numeric.
Type	number
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValueNumeric

assertionUnit

Title (Label)	Assertion Unit
Namespace	dwc
Table:	Chronometric Age Assertion
Description	Unit associated with the value in dwc:assertionValue or dwc:assertionValueNumeric.
Comments	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionUnit

assertionUnitIRI

Title (Label)	Assertion Unit (IRI)
Namespace	dwciri
Table:	Chronometric Age Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue or a dwc:assertionValueNumeric.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionUnitIRI

assertionUnitSource

Title (Label)	Assertion Unit Source
Namespace	dc
Table:	Chronometric Age Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError

Title (Label)	Assertion Error
Namespace	dwc
Table:	Chronometric Age Assertion
Description	The description of the potential error associated with dwc:assertionValueNumeric.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionError

assertionBy

Title (Label)	Assertion By
Namespace	dwc
Table:	Chronometric Age Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionBy

assertionByID

Title (Label)	Assertion By ID
Namespace	dwciri
Table:	Chronometric Age Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionByID

assertionProtocols

Title (Label)	Assertion Protocols
Namespace	dwc
Table:	Chronometric Age Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionProtocols

assertionProtocolID

Title (Label)	Assertion Protocol ID
Namespace	dwciri
Table:	Chronometric Age Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionProtocolID

assertionReferences

Title (Label)	Assertion References
Namespace	dwc
Table:	Chronometric Age Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionReferences

assertionRemarks

Title (Label)	Assertion Remarks
Namespace	dwc
Table:	Chronometric Age Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionRemarks

Event Assertion

Identifier: http://rs.tdwg.org/dwc/dwc-dp/event-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:Event.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
eventID	about	event	eventID	Yes
assertionByID	asserted by	agent	agentID	No
assertionProtocolID	followed	protocol	protocolID	No

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Event Assertion
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

assertionID

Title (Label)	Assertion ID
Namespace	dwc
Table:	Event Assertion
Description	An identifier for a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionID

verbatimAssertionType

Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table:	Event Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Comments	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/verbatimAssertionType

assertionType

Title (Label)	Assertion Type
Namespace	dwc
Table:	Event Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionType

assertionTypeIRI

Title (Label)	Assertion Type (IRI)
Namespace	dwciri
Table:	Event Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionTypeIRI

assertionTypeSource

Title (Label)	Assertion Type Source
Namespace	dc
Table:	Event Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate

Title (Label)	Assertion Made Date
Namespace	dwc
Table:	Event Assertion
Description	A date on which a dwc:Assertion was created.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionMadeDate

assertionEffectiveDate

Title (Label)	Assertion Effective Date
Namespace	dwc
Table:	Event Assertion
Description	A date on which a state or measurement of a dwc:Assertion was deemed to first be in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionEffectiveDate

assertionValue

Title (Label)	Assertion Value
Namespace	dwc
Table:	Event Assertion
Description	An asserted value, if it is not numeric.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValue

assertionValueIRI

Title (Label)	Assertion Value (IRI)
Namespace	dwciri
Table:	Event Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionValueIRI

assertionValueSource

Title (Label)	Assertion Value Source
Namespace	dc
Table:	Event Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionValueNumeric

Title (Label)	Assertion Value Numeric
Namespace	dwc
Table:	Event Assertion
Description	An asserted value, if it is numeric.
Type	number
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValueNumeric

assertionUnit

Title (Label)	Assertion Unit
Namespace	dwc
Table:	Event Assertion
Description	Unit associated with the value in dwc:assertionValue or dwc:assertionValueNumeric.
Comments	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionUnit

assertionUnitIRI

Title (Label)	Assertion Unit (IRI)
Namespace	dwciri
Table:	Event Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue or a dwc:assertionValueNumeric.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionUnitIRI

assertionUnitSource

Title (Label)	Assertion Unit Source
Namespace	dc
Table:	Event Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError

Title (Label)	Assertion Error
Namespace	dwc
Table:	Event Assertion
Description	The description of the potential error associated with dwc:assertionValueNumeric.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionError

assertionBy

Title (Label)	Assertion By
Namespace	dwc
Table:	Event Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionBy

assertionByID

Title (Label)	Assertion By ID
Namespace	dwciri
Table:	Event Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionByID

assertionProtocols

Title (Label)	Assertion Protocols
Namespace	dwc
Table:	Event Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionProtocols

assertionProtocolID

Title (Label)	Assertion Protocol ID
Namespace	dwciri
Table:	Event Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionProtocolID

assertionReferences

Title (Label)	Assertion References
Namespace	dwc
Table:	Event Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionReferences

assertionRemarks

Title (Label)	Assertion Remarks
Namespace	dwc
Table:	Event Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionRemarks

Material Assertion

Identifier: http://rs.tdwg.org/dwc/dwc-dp/material-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:MaterialEntity.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
materialEntityID	about	material	materialEntityID	Yes
assertionByID	asserted by	agent	agentID	No
assertionProtocolID	followed	protocol	protocolID	No

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Material Assertion
Description	An identifier for a dwc:MaterialEntity.
Comments	Values of dwc:materialEntityID are intended to uniquely and persistently identify a particular dwc:MaterialEntity within some context. Examples of context include a particular sample collection, an organization, or the worldwide scale. Recommended best practice is to use a persistent, globally unique identifier. The identifier is bound to a physical object (a dwc:MaterialEntity) as opposed to a particular digital record (representation) of that physical object.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

assertionID

Title (Label)	Assertion ID
Namespace	dwc
Table:	Material Assertion
Description	An identifier for a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionID

verbatimAssertionType

Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table:	Material Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Comments	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/verbatimAssertionType

assertionType

Title (Label)	Assertion Type
Namespace	dwc
Table:	Material Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionType

assertionTypeIRI

Title (Label)	Assertion Type (IRI)
Namespace	dwciri
Table:	Material Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionTypeIRI

assertionTypeSource

Title (Label)	Assertion Type Source
Namespace	dc
Table:	Material Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate

Title (Label)	Assertion Made Date
Namespace	dwc
Table:	Material Assertion
Description	A date on which a dwc:Assertion was created.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionMadeDate

assertionEffectiveDate

Title (Label)	Assertion Effective Date
Namespace	dwc
Table:	Material Assertion
Description	A date on which a state or measurement of a dwc:Assertion was deemed to first be in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionEffectiveDate

assertionValue

Title (Label)	Assertion Value
Namespace	dwc
Table:	Material Assertion
Description	An asserted value, if it is not numeric.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValue

assertionValueIRI

Title (Label)	Assertion Value (IRI)
Namespace	dwciri
Table:	Material Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionValueIRI

assertionValueSource

Title (Label)	Assertion Value Source
Namespace	dc
Table:	Material Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionValueNumeric

Title (Label)	Assertion Value Numeric
Namespace	dwc
Table:	Material Assertion
Description	An asserted value, if it is numeric.
Type	number
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValueNumeric

assertionUnit

Title (Label)	Assertion Unit
Namespace	dwc
Table:	Material Assertion
Description	Unit associated with the value in dwc:assertionValue or dwc:assertionValueNumeric.
Comments	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionUnit

assertionUnitIRI

Title (Label)	Assertion Unit (IRI)
Namespace	dwciri
Table:	Material Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue or a dwc:assertionValueNumeric.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionUnitIRI

assertionUnitSource

Title (Label)	Assertion Unit Source
Namespace	dc
Table:	Material Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError

Title (Label)	Assertion Error
Namespace	dwc
Table:	Material Assertion
Description	The description of the potential error associated with dwc:assertionValueNumeric.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionError

assertionBy

Title (Label)	Assertion By
Namespace	dwc
Table:	Material Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionBy

assertionByID

Title (Label)	Assertion By ID
Namespace	dwciri
Table:	Material Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionByID

assertionProtocols

Title (Label)	Assertion Protocols
Namespace	dwc
Table:	Material Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionProtocols

assertionProtocolID

Title (Label)	Assertion Protocol ID
Namespace	dwciri
Table:	Material Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionProtocolID

assertionReferences

Title (Label)	Assertion References
Namespace	dwc
Table:	Material Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionReferences

assertionRemarks

Title (Label)	Assertion Remarks
Namespace	dwc
Table:	Material Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionRemarks

Media Assertion

Identifier: http://rs.tdwg.org/dwc/dwc-dp/media-assertion

Description: A dwc:Assertion made by a dcterms:Agent about an ac:Media entity.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
mediaID	about	media	mediaID	Yes
assertionByID	asserted by	agent	agentID	No
assertionProtocolID	followed	protocol	protocolID	No

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Media Assertion
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

assertionID

Title (Label)	Assertion ID
Namespace	dwc
Table:	Media Assertion
Description	An identifier for a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionID

verbatimAssertionType

Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table:	Media Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Comments	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/verbatimAssertionType

assertionType

Title (Label)	Assertion Type
Namespace	dwc
Table:	Media Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionType

assertionTypeIRI

Title (Label)	Assertion Type (IRI)
Namespace	dwciri
Table:	Media Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionTypeIRI

assertionTypeSource

Title (Label)	Assertion Type Source
Namespace	dc
Table:	Media Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate

Title (Label)	Assertion Made Date
Namespace	dwc
Table:	Media Assertion
Description	A date on which a dwc:Assertion was created.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionMadeDate

assertionEffectiveDate

Title (Label)	Assertion Effective Date
Namespace	dwc
Table:	Media Assertion
Description	A date on which a state or measurement of a dwc:Assertion was deemed to first be in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionEffectiveDate

assertionValue

Title (Label)	Assertion Value
Namespace	dwc
Table:	Media Assertion
Description	An asserted value, if it is not numeric.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValue

assertionValueIRI

Title (Label)	Assertion Value (IRI)
Namespace	dwciri
Table:	Media Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionValueIRI

assertionValueSource

Title (Label)	Assertion Value Source
Namespace	dc
Table:	Media Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionValueNumeric

Title (Label)	Assertion Value Numeric
Namespace	dwc
Table:	Media Assertion
Description	An asserted value, if it is numeric.
Type	number
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValueNumeric

assertionUnit

Title (Label)	Assertion Unit
Namespace	dwc
Table:	Media Assertion
Description	Unit associated with the value in dwc:assertionValue or dwc:assertionValueNumeric.
Comments	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionUnit

assertionUnitIRI

Title (Label)	Assertion Unit (IRI)
Namespace	dwciri
Table:	Media Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue or a dwc:assertionValueNumeric.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionUnitIRI

assertionUnitSource

Title (Label)	Assertion Unit Source
Namespace	dc
Table:	Media Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError

Title (Label)	Assertion Error
Namespace	dwc
Table:	Media Assertion
Description	The description of the potential error associated with dwc:assertionValueNumeric.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionError

assertionBy

Title (Label)	Assertion By
Namespace	dwc
Table:	Media Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionBy

assertionByID

Title (Label)	Assertion By ID
Namespace	dwciri
Table:	Media Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionByID

assertionProtocols

Title (Label)	Assertion Protocols
Namespace	dwc
Table:	Media Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionProtocols

assertionProtocolID

Title (Label)	Assertion Protocol ID
Namespace	dwciri
Table:	Media Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionProtocolID

assertionReferences

Title (Label)	Assertion References
Namespace	dwc
Table:	Media Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionReferences

assertionRemarks

Title (Label)	Assertion Remarks
Namespace	dwc
Table:	Media Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionRemarks

Molecular Protocol Assertion

Identifier: http://rs.tdwg.org/dwc/dwc-dp/molecular-protocol-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:MolecularProtocol.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
molecularProtocolID	about	molecular-protocol	molecularProtocolID	Yes
assertionByID	asserted by	agent	agentID	No
assertionProtocolID	followed	protocol	protocolID	No

molecularProtocolID

Title (Label)	Molecular Protocol ID
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	An identifier for a dwc:MolecularProtocol.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/molecularProtocolID

assertionID

Title (Label)	Assertion ID
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	An identifier for a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionID

verbatimAssertionType

Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Comments	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/verbatimAssertionType

assertionType

Title (Label)	Assertion Type
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionType

assertionTypeIRI

Title (Label)	Assertion Type (IRI)
Namespace	dwciri
Table:	Molecular Protocol Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionTypeIRI

assertionTypeSource

Title (Label)	Assertion Type Source
Namespace	dc
Table:	Molecular Protocol Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate

Title (Label)	Assertion Made Date
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	A date on which a dwc:Assertion was created.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionMadeDate

assertionEffectiveDate

Title (Label)	Assertion Effective Date
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	A date on which a state or measurement of a dwc:Assertion was deemed to first be in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionEffectiveDate

assertionValue

Title (Label)	Assertion Value
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	An asserted value, if it is not numeric.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValue

assertionValueIRI

Title (Label)	Assertion Value (IRI)
Namespace	dwciri
Table:	Molecular Protocol Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionValueIRI

assertionValueSource

Title (Label)	Assertion Value Source
Namespace	dc
Table:	Molecular Protocol Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionValueNumeric

Title (Label)	Assertion Value Numeric
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	An asserted value, if it is numeric.
Type	number
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValueNumeric

assertionUnit

Title (Label)	Assertion Unit
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	Unit associated with the value in dwc:assertionValue or dwc:assertionValueNumeric.
Comments	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionUnit

assertionUnitIRI

Title (Label)	Assertion Unit (IRI)
Namespace	dwciri
Table:	Molecular Protocol Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue or a dwc:assertionValueNumeric.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionUnitIRI

assertionUnitSource

Title (Label)	Assertion Unit Source
Namespace	dc
Table:	Molecular Protocol Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError

Title (Label)	Assertion Error
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	The description of the potential error associated with dwc:assertionValueNumeric.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionError

assertionBy

Title (Label)	Assertion By
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionBy

assertionByID

Title (Label)	Assertion By ID
Namespace	dwciri
Table:	Molecular Protocol Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionByID

assertionProtocols

Title (Label)	Assertion Protocols
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionProtocols

assertionProtocolID

Title (Label)	Assertion Protocol ID
Namespace	dwciri
Table:	Molecular Protocol Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionProtocolID

assertionReferences

Title (Label)	Assertion References
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionReferences

assertionRemarks

Title (Label)	Assertion Remarks
Namespace	dwc
Table:	Molecular Protocol Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionRemarks

Nucleotide Analysis Assertion

Identifier: http://rs.tdwg.org/dwc/dwc-dp/nucleotide-analysis-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:NucleotideSequence.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
nucleotideAnalysisID	about	nucleotide-analysis	nucleotideAnalysisID	Yes
assertionByID	asserted by	agent	agentID	No
assertionProtocolID	followed	protocol	protocolID	No

nucleotideAnalysisID

Title (Label)	Nucleotide Analysis ID
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	An identifier for a dwc:NucleotideAnalysis.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/nucleotideAnalysisID

assertionID

Title (Label)	Assertion ID
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	An identifier for a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/measurementID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/measurementID-2023-06-28

verbatimAssertionType

Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Comments	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/verbatimMeasurementType
dcterms:references	http://rs.tdwg.org/dwc/terms/version/verbatimMeasurementType-2025-06-12

assertionType

Title (Label)	Assertion Type
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/measurementType
dcterms:references	http://rs.tdwg.org/dwc/terms/version/measurementType-2023-06-28

assertionTypeIRI

Title (Label)	Assertion Type IRI
Namespace	dwciri
Table:	Nucleotide Analysis Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementType
dcterms:references	http://rs.tdwg.org/dwc/iri/version/measurementType-2015-03-27

assertionTypeSource

Title (Label)	Assertion Type Source
Namespace	dc
Table:	Nucleotide Analysis Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate

Title (Label)	Assertion Made Date
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	A date on which a dwc:Assertion was created.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/measurementDeterminedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/measurementDeterminedDate-2025-06-12

assertionEffectiveDate

Title (Label)	Assertion Effective Date
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	A date on which a state or measurement of a dwc:Assertion was deemed to first be in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionEffectiveDate

assertionValue

Title (Label)	Assertion Value
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	An asserted value, if it is not numeric.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/measurementValue
dcterms:references	http://rs.tdwg.org/dwc/terms/version/measurementValue-2023-06-28

assertionValueIRI

Title (Label)	Assertion Value IRI
Namespace	dwciri
Table:	Nucleotide Analysis Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementValue
dcterms:references	http://rs.tdwg.org/dwc/iri/version/measurementValue-2021-07-15

assertionValueSource

Title (Label)	Assertion Value Source
Namespace	dc
Table:	Nucleotide Analysis Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionValueNumeric

Title (Label)	Assertion Value Numeric
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	An asserted value, if it is numeric.
Type	number
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValueNumeric

assertionUnit

Title (Label)	Assertion Unit
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	Unit associated with the value in dwc:assertionValue or dwc:assertionValueNumeric.
Comments	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionUnit

assertionUnitIRI

Title (Label)	Assertion Unit IRI
Namespace	dwciri
Table:	Nucleotide Analysis Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue or a dwc:assertionValueNumeric.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionUnitIRI

assertionUnitSource

Title (Label)	Assertion Unit Source
Namespace	dc
Table:	Nucleotide Analysis Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError

Title (Label)	Assertion Error
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	The description of the potential error associated with dwc:assertionValueNumeric.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/measurementAccuracy
dcterms:references	http://rs.tdwg.org/dwc/terms/version/measurementAccuracy-2023-06-28

assertionBy

Title (Label)	Assertion By
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/measurementDeterminedBy
dcterms:references	http://rs.tdwg.org/dwc/terms/version/measurementDeterminedBy-2023-06-28

assertionByID

Title (Label)	Assertion By ID
Namespace	dwciri
Table:	Nucleotide Analysis Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementDeterminedBy
dcterms:references	http://rs.tdwg.org/dwc/iri/version/measurementDeterminedBy-2023-06-28

assertionProtocols

Title (Label)	Assertion Protocols
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/measurementMethod
dcterms:references	http://rs.tdwg.org/dwc/terms/version/measurementMethod-2023-06-28

assertionProtocolID

Title (Label)	Assertion Protocol ID
Namespace	dwciri
Table:	Nucleotide Analysis Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/iri/measurementMethod
dcterms:references	http://rs.tdwg.org/dwc/iri/version/measurementMethod-2015-03-27

assertionReferences

Title (Label)	Assertion References
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources used in a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionReferences

assertionRemarks

Title (Label)	Assertion Remarks
Namespace	dwc
Table:	Nucleotide Analysis Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/measurementRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/measurementRemarks-2023-06-28

Occurrence Assertion

Identifier: http://rs.tdwg.org/dwc/dwc-dp/occurrence-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:Occurrence.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
occurrenceID	about	occurrence	occurrenceID	Yes
assertionByID	asserted by	agent	agentID	No
assertionProtocolID	followed	protocol	protocolID	No

occurrenceID

Title (Label)	Occurrence ID
Namespace	dwc
Table:	Occurrence Assertion
Description	An identifier for a dwc:Occurrence.
Comments	Recommended best practice is to use a persistent, globally unique identifier. In the absence of a persistent global unique identifier, construct one from a combination of identifiers in the record that will most closely make a dwc:occurrenceID globally unique.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

assertionID

Title (Label)	Assertion ID
Namespace	dwc
Table:	Occurrence Assertion
Description	An identifier for a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionID

verbatimAssertionType

Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table:	Occurrence Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Comments	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/verbatimAssertionType

assertionType

Title (Label)	Assertion Type
Namespace	dwc
Table:	Occurrence Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionType

assertionTypeIRI

Title (Label)	Assertion Type (IRI)
Namespace	dwciri
Table:	Occurrence Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionTypeIRI

assertionTypeSource

Title (Label)	Assertion Type Source
Namespace	dc
Table:	Occurrence Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate

Title (Label)	Assertion Made Date
Namespace	dwc
Table:	Occurrence Assertion
Description	A date on which a dwc:Assertion was created.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionMadeDate

assertionEffectiveDate

Title (Label)	Assertion Effective Date
Namespace	dwc
Table:	Occurrence Assertion
Description	A date on which a state or measurement of a dwc:Assertion was deemed to first be in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionEffectiveDate

assertionValue

Title (Label)	Assertion Value
Namespace	dwc
Table:	Occurrence Assertion
Description	An asserted value, if it is not numeric.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValue

assertionValueIRI

Title (Label)	Assertion Value (IRI)
Namespace	dwciri
Table:	Occurrence Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionValueIRI

assertionValueSource

Title (Label)	Assertion Value Source
Namespace	dc
Table:	Occurrence Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionValueNumeric

Title (Label)	Assertion Value Numeric
Namespace	dwc
Table:	Occurrence Assertion
Description	An asserted value, if it is numeric.
Type	number
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValueNumeric

assertionUnit

Title (Label)	Assertion Unit
Namespace	dwc
Table:	Occurrence Assertion
Description	Unit associated with the value in dwc:assertionValue or dwc:assertionValueNumeric.
Comments	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionUnit

assertionUnitIRI

Title (Label)	Assertion Unit (IRI)
Namespace	dwciri
Table:	Occurrence Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue or a dwc:assertionValueNumeric.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionUnitIRI

assertionUnitSource

Title (Label)	Assertion Unit Source
Namespace	dc
Table:	Occurrence Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError

Title (Label)	Assertion Error
Namespace	dwc
Table:	Occurrence Assertion
Description	The description of the potential error associated with dwc:assertionValueNumeric.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionError

assertionBy

Title (Label)	Assertion By
Namespace	dwc
Table:	Occurrence Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionBy

assertionByID

Title (Label)	Assertion By ID
Namespace	dwciri
Table:	Occurrence Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionByID

assertionProtocols

Title (Label)	Assertion Protocols
Namespace	dwc
Table:	Occurrence Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionProtocols

assertionProtocolID

Title (Label)	Assertion Protocol ID
Namespace	dwciri
Table:	Occurrence Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionProtocolID

assertionReferences

Title (Label)	Assertion References
Namespace	dwc
Table:	Occurrence Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionReferences

assertionRemarks

Title (Label)	Assertion Remarks
Namespace	dwc
Table:	Occurrence Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionRemarks

Organism Assertion

Identifier: http://rs.tdwg.org/dwc/dwc-dp/organism-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:Organism.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
organismID	about	organism	organismID	Yes
assertionByID	asserted by	agent	agentID	No
assertionProtocolID	followed	protocol	protocolID	No

organismID

Title (Label)	Organism ID
Namespace	dwc
Table:	Organism Assertion
Description	An identifier for a dwc:Organism.
Comments	Recommended best practice is to use a persistent, globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismID-2023-06-28

assertionID

Title (Label)	Assertion ID
Namespace	dwc
Table:	Organism Assertion
Description	An identifier for a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionID

verbatimAssertionType

Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table:	Organism Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Comments	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/verbatimAssertionType

assertionType

Title (Label)	Assertion Type
Namespace	dwc
Table:	Organism Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionType

assertionTypeIRI

Title (Label)	Assertion Type (IRI)
Namespace	dwciri
Table:	Organism Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionTypeIRI

assertionTypeSource

Title (Label)	Assertion Type Source
Namespace	dc
Table:	Organism Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate

Title (Label)	Assertion Made Date
Namespace	dwc
Table:	Organism Assertion
Description	A date on which a dwc:Assertion was created.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionMadeDate

assertionEffectiveDate

Title (Label)	Assertion Effective Date
Namespace	dwc
Table:	Organism Assertion
Description	A date on which a state or measurement of a dwc:Assertion was deemed to first be in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionEffectiveDate

assertionValue

Title (Label)	Assertion Value
Namespace	dwc
Table:	Organism Assertion
Description	An asserted value, if it is not numeric.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValue

assertionValueIRI

Title (Label)	Assertion Value (IRI)
Namespace	dwciri
Table:	Organism Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionValueIRI

assertionValueSource

Title (Label)	Assertion Value Source
Namespace	dc
Table:	Organism Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionValueNumeric

Title (Label)	Assertion Value Numeric
Namespace	dwc
Table:	Organism Assertion
Description	An asserted value, if it is numeric.
Type	number
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValueNumeric

assertionUnit

Title (Label)	Assertion Unit
Namespace	dwc
Table:	Organism Assertion
Description	Unit associated with the value in dwc:assertionValue or dwc:assertionValueNumeric.
Comments	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionUnit

assertionUnitIRI

Title (Label)	Assertion Unit (IRI)
Namespace	dwciri
Table:	Organism Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue or a dwc:assertionValueNumeric.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionUnitIRI

assertionUnitSource

Title (Label)	Assertion Unit Source
Namespace	dc
Table:	Organism Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError

Title (Label)	Assertion Error
Namespace	dwc
Table:	Organism Assertion
Description	The description of the potential error associated with dwc:assertionValueNumeric.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionError

assertionBy

Title (Label)	Assertion By
Namespace	dwc
Table:	Organism Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionBy

assertionByID

Title (Label)	Assertion By ID
Namespace	dwciri
Table:	Organism Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionByID

assertionProtocols

Title (Label)	Assertion Protocols
Namespace	dwc
Table:	Organism Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionProtocols

assertionProtocolID

Title (Label)	Assertion Protocol ID
Namespace	dwciri
Table:	Organism Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionProtocolID

assertionReferences

Title (Label)	Assertion References
Namespace	dwc
Table:	Organism Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionReferences

assertionRemarks

Title (Label)	Assertion Remarks
Namespace	dwc
Table:	Organism Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionRemarks

Organism Interaction Assertion

Identifier: http://rs.tdwg.org/dwc/dwc-dp/organism-interaction-assertion

Description: A dwc:Assertion made by a dcterms:Agent about a dwc:OrganismInteraction.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
organismInteractionID	about	organism-interaction	organismInteractionID	Yes
assertionByID	asserted by	agent	agentID	No
assertionProtocolID	followed	protocol	protocolID	No

organismInteractionID

Title (Label)	Organism Interaction ID
Namespace	dwc
Table:	Organism Interaction Assertion
Description	An identifier for a dwc:OrganismInteraction.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/organismInteractionID

assertionID

Title (Label)	Assertion ID
Namespace	dwc
Table:	Organism Interaction Assertion
Description	An identifier for a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionID

verbatimAssertionType

Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table:	Organism Interaction Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Comments	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/verbatimAssertionType

assertionType

Title (Label)	Assertion Type
Namespace	dwc
Table:	Organism Interaction Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionType

assertionTypeIRI

Title (Label)	Assertion Type (IRI)
Namespace	dwciri
Table:	Organism Interaction Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionTypeIRI

assertionTypeSource

Title (Label)	Assertion Type Source
Namespace	dc
Table:	Organism Interaction Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate

Title (Label)	Assertion Made Date
Namespace	dwc
Table:	Organism Interaction Assertion
Description	A date on which a dwc:Assertion was created.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionMadeDate

assertionEffectiveDate

Title (Label)	Assertion Effective Date
Namespace	dwc
Table:	Organism Interaction Assertion
Description	A date on which a state or measurement of a dwc:Assertion was deemed to first be in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionEffectiveDate

assertionValue

Title (Label)	Assertion Value
Namespace	dwc
Table:	Organism Interaction Assertion
Description	An asserted value, if it is not numeric.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValue

assertionValueIRI

Title (Label)	Assertion Value (IRI)
Namespace	dwciri
Table:	Organism Interaction Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionValueIRI

assertionValueSource

Title (Label)	Assertion Value Source
Namespace	dc
Table:	Organism Interaction Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionValueNumeric

Title (Label)	Assertion Value Numeric
Namespace	dwc
Table:	Organism Interaction Assertion
Description	An asserted value, if it is numeric.
Type	number
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValueNumeric

assertionUnit

Title (Label)	Assertion Unit
Namespace	dwc
Table:	Organism Interaction Assertion
Description	Unit associated with the value in dwc:assertionValue or dwc:assertionValueNumeric.
Comments	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionUnit

assertionUnitIRI

Title (Label)	Assertion Unit (IRI)
Namespace	dwciri
Table:	Organism Interaction Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:AssertionValueNumeric.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionUnitIRI

assertionUnitSource

Title (Label)	Assertion Unit Source
Namespace	dc
Table:	Organism Interaction Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError

Title (Label)	Assertion Error
Namespace	dwc
Table:	Organism Interaction Assertion
Description	The description of the potential error associated with dwc:assertionValueNumeric.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionError

assertionBy

Title (Label)	Assertion By
Namespace	dwc
Table:	Organism Interaction Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionBy

assertionByID

Title (Label)	Assertion By ID
Namespace	dwciri
Table:	Organism Interaction Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionByID

assertionProtocols

Title (Label)	Assertion Protocols
Namespace	dwc
Table:	Organism Interaction Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionProtocols

assertionProtocolID

Title (Label)	Assertion Protocol ID
Namespace	dwciri
Table:	Organism Interaction Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionProtocolID

assertionReferences

Title (Label)	Assertion References
Namespace	dwc
Table:	Organism Interaction Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionReferences

assertionRemarks

Title (Label)	Assertion Remarks
Namespace	dwc
Table:	Organism Interaction Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionRemarks

Survey Assertion

Identifier: http://rs.tdwg.org/dwc/dwc-dp/survey-assertion

Description: A dwc:Assertion made by a dcterms:Agent about an eco:Survey.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/MeasurementOrFact

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
surveyID	about	survey	surveyID	Yes
assertionByID	asserted by	agent	agentID	No
assertionProtocolID	followed	protocol	protocolID	No

surveyID

Title (Label)	Survey ID
Namespace	dwc
Table:	Survey Assertion
Description	An identifier for a dwc:Survey.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyID

assertionID

Title (Label)	Assertion ID
Namespace	dwc
Table:	Survey Assertion
Description	An identifier for a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionID

verbatimAssertionType

Title (Label)	Verbatim Assertion Type
Namespace	dwc
Table:	Survey Assertion
Description	A string representing the type of dwc:Assertion as it appeared in the original record.
Comments	This term is meant to allow the capture of an unaltered original name for a dwc:assertionType. This term is meant to be used in addition to dwc:assertionType, not instead of it.
Examples	`water_temp` `Fish biomass` `sampling net mesh size`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/verbatimAssertionType

assertionType

Title (Label)	Assertion Type
Namespace	dwc
Table:	Survey Assertion
Description	A category that best matches the nature of a dwc:Assertion.
Comments	Recommended best practice is to use a controlled vocabulary. This term has an equivalent in the dwciri: namespace that allows only an IRI as a value, whereas this term allows for any string literal value.
Examples	`tail length` `temperature` `trap line length` `survey area` `trap type`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionType

assertionTypeIRI

Title (Label)	Assertion Type (IRI)
Namespace	dwciri
Table:	Survey Assertion
Description	An IRI of a controlled vocabulary value for a type of dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionTypeIRI

assertionTypeSource

Title (Label)	Assertion Type Source
Namespace	dc
Table:	Survey Assertion
Description	A reference to the controlled vocabulary in which the definition of a value in dwc:assertionType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionMadeDate

Title (Label)	Assertion Made Date
Namespace	dwc
Table:	Survey Assertion
Description	A date on which a dwc:Assertion was created.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionMadeDate

assertionEffectiveDate

Title (Label)	Assertion Effective Date
Namespace	dwc
Table:	Survey Assertion
Description	A date on which a state or measurement of a dwc:Assertion was deemed to first be in effect.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Examples	`1963-03-08T14:07-06:00` (8 Mar 1963 at or after 2:07pm and before 2:08pm in the time zone six hours earlier than UTC) `2009-02-20T08:40Z` (20 February 2009 at or after 8:40am and before 8:41 UTC) `2018-08-29T15:19` (29 August 2018 at or after 3:19pm and before 3:20pm local time) `1809-02-12` (within the day 12 February 1809) `1906-06` (in the month of June 1906) `1971` (in the year 1971) `2007-03-01T13:00:00Z/2008-05-11T15:30:00Z` (some time within the interval beginning 1 March 2007 at 1pm UTC and before 11 May 2008 at 3:30pm UTC) `1900/1909` (some time within the interval between the beginning of the year 1900 and before the year 1909) `2007-11-13/15` (some time in the interval between the beginning of 13 November 2007 and before 15 November 2007)
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionEffectiveDate

assertionValue

Title (Label)	Assertion Value
Namespace	dwc
Table:	Survey Assertion
Description	An asserted value, if it is not numeric.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValue

assertionValueIRI

Title (Label)	Assertion Value (IRI)
Namespace	dwciri
Table:	Survey Assertion
Description	An IRI of the controlled vocabulary value for a value of a dwc:Assertion.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionValueIRI

assertionValueSource

Title (Label)	Assertion Value Source
Namespace	dc
Table:	Survey Assertion
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:assertionValue is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionValueNumeric

Title (Label)	Assertion Value Numeric
Namespace	dwc
Table:	Survey Assertion
Description	An asserted value, if it is numeric.
Type	number
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionValueNumeric

assertionUnit

Title (Label)	Assertion Unit
Namespace	dwc
Table:	Survey Assertion
Description	Unit associated with the value in dwc:assertionValue or dwc:assertionValueNumeric.
Comments	Recommended best practice is to use a controlled vocabulary such as the Ontology of Units of Measure http://www.wurvoc.org/vocabularies/om-1.8/ of SI units, derived units, or other non-SI units accepted for use within the SI. For units that are composed of multiple parts, use the patterns as given in "A Primer for Communicating Mathematics via Plain Text" (https://cse.sc.edu/~fenner/latex-ASCII.pdf) by Stephen Fenner (e.g., `g/cm^3` for grams per cubic centimeter). For other units, provide the value as a recognizable standard (e.g., '%') or written out in full and in the plural (e.g., `individuals`). It is fine to provide non-SI units in the original language of the dataset.
Examples	`m` `s` `g` `ml`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionUnit

assertionUnitIRI

Title (Label)	Assertion Unit (IRI)
Namespace	dwciri
Table:	Survey Assertion
Description	An IRI of a controlled vocabulary value for the unit of a dwc:assertionValue or a dwc:assertionValueNumeric.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionUnitIRI

assertionUnitSource

Title (Label)	Assertion Unit Source
Namespace	dc
Table:	Survey Assertion
Description	A reference to a controlled vocabulary in which the definition of the value in dwc:assertionUnit is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

assertionError

Title (Label)	Assertion Error
Namespace	dwc
Table:	Survey Assertion
Description	The description of the potential error associated with dwc:assertionValueNumeric.
Examples	`0.01` `normal distribution with variation of 2 m`
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionError

assertionBy

Title (Label)	Assertion By
Namespace	dwc
Table:	Survey Assertion
Description	A list (concatenated and separated) of names of dcterms:Agents responsible for making a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionBy

assertionByID

Title (Label)	Assertion By ID
Namespace	dwciri
Table:	Survey Assertion
Description	An identifier for a dcterms:Agent responsible for making a dwc:Assertion.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionByID

assertionProtocols

Title (Label)	Assertion Protocols
Namespace	dwc
Table:	Survey Assertion
Description	Names of, references to, or descriptions of dwc:Protocols used in making a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionProtocols

assertionProtocolID

Title (Label)	Assertion Protocol ID
Namespace	dwciri
Table:	Survey Assertion
Description	An identifier for a dwc:Protocol used to make a dwc:Assertion.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwciri/assertionProtocolID

assertionReferences

Title (Label)	Assertion References
Namespace	dwc
Table:	Survey Assertion
Description	A list (concatenated and separated) of dcterms:BibliographicResources associated with a dwc:Assertion.
Comments	Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionReferences

assertionRemarks

Title (Label)	Assertion Remarks
Namespace	dwc
Table:	Survey Assertion
Description	Comments or notes about a dwc:Assertion.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/assertionRemarks

Agent Identifier

Identifier: http://rs.tdwg.org/dwc/dwc-dp/agent-identifier

Description: An adms:Identifier for a dcterms:Agent.

Comments: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

Examples:

`an ORCID`

`a Wikidata Q-number`

`an Index Herbariorum Institution Code`

`an International Standard Name Identifier`

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
agentID	for	agent	agentID	Yes

agentID

Title (Label)	Agent ID
Namespace	dwc
Table:	Agent Identifier
Description	An identifier for a dcterms:Agent.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/agentID

identifier

Title (Label)	Identifier
Namespace	skos
Table:	Agent Identifier
Description	An unambiguous reference to a resource within a given context.
Comments	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Examples	`https://orcid.org/0000-0002-1825-0097` `https://ror.org/00mh9zx15`
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation
dcterms:references	https://www.w3.org/TR/2009/REC-skos-reference-20090818/#notation

identifierType

Title (Label)	Identifier Type
Namespace	dc
Table:	Agent Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI

Title (Label)	Identifier Type IRI
Namespace	dcterms
Table:	Agent Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource

Title (Label)	Identifier Type Source
Namespace	dc
Table:	Agent Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage

Title (Label)	Identifier Language
Namespace	dcterms
Table:	Agent Identifier
Description	A language in which an identifier is presented.
Comments	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/language

Event Identifier

Identifier: http://rs.tdwg.org/dwc/dwc-dp/event-identifier

Description: An adms:Identifier for a dwc:Event.

Comments: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
eventID	for	event	eventID	Yes

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Event Identifier
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

identifier

Title (Label)	Identifier
Namespace	skos
Table:	Event Identifier
Description	An unambiguous reference to a resource within a given context.
Comments	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation
dcterms:references	https://www.w3.org/TR/2009/REC-skos-reference-20090818/#notation

identifierType

Title (Label)	Identifier Type
Namespace	dc
Table:	Event Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI

Title (Label)	Identifier Type IRI
Namespace	dcterms
Table:	Event Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource

Title (Label)	Identifier Type Source
Namespace	dc
Table:	Event Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage

Title (Label)	Identifier Language
Namespace	dcterms
Table:	Event Identifier
Description	A language in which an identifier is presented.
Comments	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/language

Material Identifier

Identifier: http://rs.tdwg.org/dwc/dwc-dp/material-identifier

Description: An adms:Identifier for a dwc:MaterialEntity.

Comments: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
materialEntityID	for	material	materialEntityID	Yes

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Material Identifier
Description	An identifier for a dwc:MaterialEntity.
Comments	Values of dwc:materialEntityID are intended to uniquely and persistently identify a particular dwc:MaterialEntity within some context. Examples of context include a particular sample collection, an organization, or the worldwide scale. Recommended best practice is to use a persistent, globally unique identifier. The identifier is bound to a physical object (a dwc:MaterialEntity) as opposed to a particular digital record (representation) of that physical object.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

identifier

Title (Label)	Identifier
Namespace	skos
Table:	Material Identifier
Description	An unambiguous reference to a resource within a given context.
Comments	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation
dcterms:references	https://www.w3.org/TR/2009/REC-skos-reference-20090818/#notation

identifierType

Title (Label)	Identifier Type
Namespace	dc
Table:	Material Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI

Title (Label)	Identifier Type IRI
Namespace	dcterms
Table:	Material Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource

Title (Label)	Identifier Type Source
Namespace	dc
Table:	Material Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage

Title (Label)	Identifier Language
Namespace	dcterms
Table:	Material Identifier
Description	A language in which an identifier is presented.
Comments	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/language

Media Identifier

Identifier: http://rs.tdwg.org/dwc/dwc-dp/media-identifier

Description: An adms:Identifier for an ac:Media entity.

Comments: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
mediaID	for	media	mediaID	Yes

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Media Identifier
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

identifier

Title (Label)	Identifier
Namespace	skos
Table:	Media Identifier
Description	An unambiguous reference to a resource within a given context.
Comments	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation
dcterms:references	https://www.w3.org/TR/2009/REC-skos-reference-20090818/#notation

identifierType

Title (Label)	Identifier Type
Namespace	dc
Table:	Media Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI

Title (Label)	Identifier Type IRI
Namespace	dcterms
Table:	Media Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource

Title (Label)	Identifier Type Source
Namespace	dc
Table:	Media Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage

Title (Label)	Identifier Language
Namespace	dcterms
Table:	Media Identifier
Description	A language in which an identifier is presented.
Comments	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/language

Occurrence Identifier

Identifier: http://rs.tdwg.org/dwc/dwc-dp/occurrence-identifier

Description: An adms:Identifier for a dwc:Occurrence.

Comments: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
occurrenceID	for	occurrence	occurrenceID	Yes

occurrenceID

Title (Label)	Occurrence ID
Namespace	dwc
Table:	Occurrence Identifier
Description	An identifier for a dwc:Occurrence.
Comments	Recommended best practice is to use a persistent, globally unique identifier. In the absence of a persistent global unique identifier, construct one from a combination of identifiers in the record that will most closely make a dwc:occurrenceID globally unique.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/occurrenceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/occurrenceID-2023-06-28

identifier

Title (Label)	Identifier
Namespace	skos
Table:	Occurrence Identifier
Description	An unambiguous reference to a resource within a given context.
Comments	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation
dcterms:references	https://www.w3.org/TR/2009/REC-skos-reference-20090818/#notation

identifierType

Title (Label)	Identifier Type
Namespace	dc
Table:	Occurrence Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI

Title (Label)	Identifier Type IRI
Namespace	dcterms
Table:	Occurrence Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource

Title (Label)	Identifier Type Source
Namespace	dc
Table:	Occurrence Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage

Title (Label)	Identifier Language
Namespace	dcterms
Table:	Occurrence Identifier
Description	A language in which an identifier is presented.
Comments	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/language

Organism Identifier

Identifier: http://rs.tdwg.org/dwc/dwc-dp/organism-identifier

Description: An adms:Identifier for a dwc:Organism.

Comments: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
organismID	for	organism	organismID	Yes

organismID

Title (Label)	Organism ID
Namespace	dwc
Table:	Organism Identifier
Description	An identifier for a dwc:Organism.
Comments	Recommended best practice is to use a persistent, globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismID-2023-06-28

identifier

Title (Label)	Identifier
Namespace	skos
Table:	Organism Identifier
Description	An unambiguous reference to a resource within a given context.
Comments	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation
dcterms:references	https://www.w3.org/TR/2009/REC-skos-reference-20090818/#notation

identifierType

Title (Label)	Identifier Type
Namespace	dc
Table:	Organism Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI

Title (Label)	Identifier Type IRI
Namespace	dcterms
Table:	Organism Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource

Title (Label)	Identifier Type Source
Namespace	dc
Table:	Organism Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage

Title (Label)	Identifier Language
Namespace	dcterms
Table:	Organism Identifier
Description	A language in which an identifier is presented.
Comments	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/language

Survey Identifier

Identifier: http://rs.tdwg.org/dwc/dwc-dp/survey-identifier

Description: An adms:Identifier for an eco:Survey.

Comments: An important point to note is that properties of the adms:Identifier class are properties of the Identifier, not the resource that it identifies or the agency that issued it.

dcterms:isVersionOf: http://www.w3.org/ns/adms#Identifier

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
surveyID	for	survey	surveyID	Yes

surveyID

Title (Label)	Survey ID
Namespace	dwc
Table:	Survey Identifier
Description	An identifier for a dwc:Survey.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/surveyID

identifier

Title (Label)	Identifier
Namespace	skos
Table:	Survey Identifier
Description	An unambiguous reference to a resource within a given context.
Comments	Recommended best practice is to identify a resource by means of a string conforming to a formal identification system.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://www.w3.org/2004/02/skos/core#notation
dcterms:references	https://www.w3.org/TR/2009/REC-skos-reference-20090818/#notation

identifierType

Title (Label)	Identifier Type
Namespace	dc
Table:	Survey Identifier
Description	A category or system that best matches the nature of an identifier (skos:notation).
Comments	Recommended best practice is to use a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

identifierTypeIRI

Title (Label)	Identifier Type IRI
Namespace	dcterms
Table:	Survey Identifier
Description	An IRI of a controlled vocabulary value for a type of identifier.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

identifierTypeSource

Title (Label)	Identifier Type Source
Namespace	dc
Table:	Survey Identifier
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:identifierType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

identifierLanguage

Title (Label)	Identifier Language
Namespace	dcterms
Table:	Survey Identifier
Description	A language in which an identifier is presented.
Comments	Recommended best practice is to use an ISO639-2 three-letter language code.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/language

Provenance

Identifier: http://rs.tdwg.org/dwc/dwc-dp/provenance

Description: Information about an entity’s origins.

Comments: This is a convenience class to group related properties.

dcterms:isVersionOf: http://example.com/term-pending/dwc/provenance

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
fundingAttributionID	funded by	agent	agentID	No
creatorID	created by	agent	agentID	No
providerID	provided by	agent	agentID	No
metadataCreatorID	metadata created by	agent	agentID	No
metadataProviderID	metadata provided by	agent	agentID	No

provenanceID

Title (Label)	Provenance ID
Namespace	dwc
Table:	Provenance
Description	An identifier for a dwc:Provenance.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/provenanceID

datasetID

Title (Label)	Dataset ID
Namespace	dwc
Table:	Provenance
Description	An identifier for a dataset from which data originated.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`b15d4952-7d20-46f1-8a3e-556a512b04c5`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/datasetID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/datasetID-2017-10-06

fundingAttribution

Title (Label)	Funding Attribution
Namespace	ac
Table:	Provenance
Description	A list (concatenated and separated) of names of the funding organizations or agencies that provided funding for a project.
Comments	Specify the full official name of the funding body. This should include the complete name without abbreviations, unless the abbreviation is an official and commonly recognized form (e.g., NSF for the National Science Foundation). Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Artsdatabanken` `National Science Foundation` `Norges forskningsråd` `Ocean Census \| Nippon Foundation`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/fundingAttribution
dcterms:references	http://rs.tdwg.org/ac/terms/version/fundingAttribution-2020-01-27

fundingAttributionID

Title (Label)	Funding Attribution ID
Namespace	dwc
Table:	Provenance
Description	An identifier for a dcterms:Agent that financially supported a project.
Comments	Provide a unique identifier for the funding body, such as an identifier used in governmental or international databases. If no official identifier exists, use a persistent and unique identifier within your organization or dataset. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`https://ror.org/00epmv149` `https://ror.org/00epmv149 \| https://ror.org/04jnzhb65` `https://www.wikidata.org/wiki/Q13102615`
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/fundingAttributionID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/fundingAttributionID-2025-06-12

source

Title (Label)	Source
Namespace	dc
Table:	Provenance
Description	A related resource from which this resource is derived.
Comments	The described resource may be derived from the related resource in whole or in part. Recommended best practice is to identify the related resource by means of a string conforming to a formal identification system.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

sourceIRI

Title (Label)	Source IRI
Namespace	dcterms
Table:	Provenance
Description	An identifier for a resource from which this resource is derived.
Comments	This property is intended to be used with non-literal values. The described resource may be derived from the related resource in whole or in part. Best practice is to identify the related resource by means of a URI or a string conforming to a formal identification system.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/source

creatorLiteral

Title (Label)	Creator
Namespace	dc
Table:	Provenance
Description	A name of a dcterms:Agent primarily responsible for making the resource.
Comments	Human readable, or doi number, or URL. Simple name of parent for human readable.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/creator

creatorID

Title (Label)	Creator ID
Namespace	dcterms
Table:	Provenance
Description	An identifier for a dcterms:Agent primarily responsible for making the resource.
Comments	Recommended practice is to identify the creator with a URI. If this is not possible or feasible, a literal value that identifies the creator may be provided.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/creator

providerLiteral

Title (Label)	Provider
Namespace	ac
Table:	Provenance
Description	A name of a dcterms:Agent responsible for presenting the ac:Media resource.
Comments	If no separate Metadata Provider is given, this also attributes the metadata.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/providerLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/providerLiteral-2023-09-05

providerID

Title (Label)	Provider ID
Namespace	ac
Table:	Provenance
Description	An identifier for a dcterms:Agent responsible for presenting the ac:Media resource.
Comments	If no separate Metadata Provider is given, this also attributes the metadata.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/provider
dcterms:references	http://rs.tdwg.org/ac/terms/version/provider-2023-09-05

metadataCreatorLiteral

Title (Label)	Metadata Creator
Namespace	ac
Table:	Provenance
Description	A name of a dcterms:Agent that created the resource metadata.
Comments	See also the entry for ac:metadataCreator and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/metadataCreatorLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/metadataCreatorLiteral-2023-09-05

metadataCreatorID

Title (Label)	Metadata Creator ID
Namespace	ac
Table:	Provenance
Description	An identifier for a dcterms:Agent that created the resource metadata.
Comments	See also the entry for ac:metadataCreatorLiteral and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/metadataCreator
dcterms:references	http://rs.tdwg.org/ac/terms/version/metadataCreator-2023-09-05

metadataProviderLiteral

Title (Label)	Metadata Provider
Namespace	ac
Table:	Provenance
Description	A name of a dcterms:Agent that provided the resource metadata.
Comments	Media resources and their metadata may be served from different institutions, e. g. in the case of aggregators adding user annotations, taxon identifications, or ratings. Compare Provider. See also the entry for ac:metadataProvider in this document and the section Namespaces, Prefixes and Term Names for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/metadataProviderLiteral
dcterms:references	http://rs.tdwg.org/ac/terms/version/metadataProviderLiteral-2020-01-27

metadataProviderID

Title (Label)	Metadata Provider ID
Namespace	ac
Table:	Provenance
Description	An identifier for a dcterms:Agent that provided the resource metadata.
Comments	Media resources and their metadata may be served from different institutions, e. g. in the case of aggregators adding user annotations, taxon identifications, or ratings. Compare Provider. See also the entry for ac:metadataProviderLiteral and the section Namespaces, Prefixes and Term Names in the Audiovisual Core Term List document for discussion of the rationale for separate terms taking URI values from those taking Literal values where both are possible. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/metadataProvider
dcterms:references	http://rs.tdwg.org/ac/terms/version/metadataProvider-2023-09-05

furtherInformationURL

Title (Label)	Further Information URL
Namespace	ac
Table:	Provenance
Description	A URL of a website that provides additional information about the version of the ac:Media resource that is provided by the Service Access Point.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/furtherInformationURL
dcterms:references	http://rs.tdwg.org/ac/terms/version/furtherInformationURL-2020-01-27

feedbackURL

Title (Label)	Feedback URL
Namespace	dwc
Table:	Provenance
Description	A uniform resource locator (URL) that points to a webpage on which a form may be submitted to gather feedback about the record.
Comments	Recommended best practice is to optionally include query strings that act to pre-populate web page form elements and communicate the context.
Examples	`https://example.com/new?title=New+issue&body=This+comment+is+about+CAN12345`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/feedbackURL
dcterms:references	http://rs.tdwg.org/dwc/terms/version/feedbackURL-2025-06-12

references

Title (Label)	References
Namespace	dcterms
Table:	Provenance
Description	A related resource that is referenced, cited, or otherwise pointed to by the described resource.
Comments	This property is intended to be used with non-literal values. This property is an inverse property of Is Referenced By.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/references

bibliographicCitation

Title (Label)	Bibliographic Citation
Namespace	dcterms
Table:	Provenance
Description	A bibliographic reference for a resource.
Comments	From Dublin Core, 'Recommended practice is to include sufficient bibliographic detail to identify the resource as unambiguously as possible.' The intended usage of this term in Darwin Core is to provide the preferred way to cite the resource itself. Note that the intended usage of dcterms:references in Darwin Core, by contrast, is to point to the definitive source representation of the resource, if one is available.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/bibliographicCitation

projectID

Title (Label)	Project ID
Namespace	dwc
Table:	Provenance
Description	A list (concatenated and separated) of identifiers for projects that contributed to a dwc:Event.
Comments	A projectID may be shared in multiple distinct datasets. The nature of the association can be described in the metadata project description element. This term should be used to provide a globally unique identifier (GUID) for a project, if available. This could be a DOI, URI, or any other persistent identifier that ensures a project can be uniquely distinguished from others. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`https://arvenetternansen.com/` `https://doi.org/10.26259/3b15eca7` `https://doi.org/10.3030/101180559` `OC202405` `RCN276730` `RCN276730 \| Artsproject_7-24`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/projectID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/projectID-2025-06-12

projectTitle

Title (Label)	Project Title
Namespace	dwc
Table:	Provenance
Description	A list (concatenated and separated) of titles or names for projects that contributed to a dwc:Event.
Comments	Use this term to provide the official name or title of a project as it is commonly known and cited. Avoid abbreviations unless they are widely understood. Recommended best practice is to separate the values in a list with space vertical bar space (` \| `).
Examples	`Arctic Deep` `Scalidophora i Noreg` `The Nansen Legacy` `Underwater Oases of the Mar del Plata Canyon: Talud Continental IV`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/projectTitle
dcterms:references	http://rs.tdwg.org/dwc/terms/version/projectTitle-2025-06-12

Event Provenance

Identifier: http://rs.tdwg.org/dwc/dwc-dp/event-provenance

Description: A dwc:Provenance for a dwc:Event.

dcterms:isVersionOf: http://example.com/term-pending//event-provenance

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
provenanceID	has	provenance	provenanceID	Yes
eventID	for	event	eventID	Yes

provenanceID

Title (Label)	Provenance ID
Namespace	dwc
Table:	Event Provenance
Description	An identifier for a dwc:Provenance.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/provenanceID

eventID

Title (Label)	Event ID
Namespace	dwc
Table:	Event Provenance
Description	An identifier for a dwc:Event.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/eventID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/eventID-2023-06-28

Material Provenance

Identifier: http://rs.tdwg.org/dwc/dwc-dp/material-provenance

Description: A dwc:Provenance for a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-provenance

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
provenanceID	has	provenance	provenanceID	Yes
materialEntityID	for	material	materialEntityID	Yes

provenanceID

Title (Label)	Provenance ID
Namespace	dwc
Table:	Material Provenance
Description	An identifier for a dwc:Provenance.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/provenanceID

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Material Provenance
Description	An identifier for a dwc:MaterialEntity.
Comments	Values of dwc:materialEntityID are intended to uniquely and persistently identify a particular dwc:MaterialEntity within some context. Examples of context include a particular sample collection, an organization, or the worldwide scale. Recommended best practice is to use a persistent, globally unique identifier. The identifier is bound to a physical object (a dwc:MaterialEntity) as opposed to a particular digital record (representation) of that physical object.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

Media Provenance

Identifier: http://rs.tdwg.org/dwc/dwc-dp/media-provenance

Description: A dwc:Provenance for an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//media-provenance

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
provenanceID	has	provenance	provenanceID	Yes
mediaID	for	media	mediaID	Yes

provenanceID

Title (Label)	Provenance ID
Namespace	dwc
Table:	Media Provenance
Description	An identifier for a dwc:Provenance.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/provenanceID

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Media Provenance
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

Usage Policy

Identifier: http://rs.tdwg.org/dwc/dwc-dp/usage-policy

Description: Information about rights, usage, and attribution statements applicable to an entity.

Comments: This is a convenience class to group related properties.

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/UsagePolicy

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
rightsHolderID	rights held by	agent	agentID	No
ownerID	owned by	agent	agentID	No

usagePolicyID

Title (Label)	Usage Policy ID
Namespace	dwc
Table:	Usage Policy
Description	An identifier for a dwc:UsagePolicy.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://example.com/term-pending/dwc/usagePolicyID

rights

Title (Label)	Rights
Namespace	dc
Table:	Usage Policy
Description	Information about rights held in and over the resource. A full-text, readable copyright statement, as required by the national legislation of the copyright holder. On collections, this applies to all contained objects, unless the object itself has a different statement. Examples: “Copyright XY 2008, all rights reserved”, “© 2008 XY Museum” , `Public Domain.`; `Copyright unknown.` Do not place just the name of the copyright holder(s) here! That belongs in a list in the xmpRights:Owner field, which should be supplied if dc:rights is not 'Public Domain', which is appropriate only if the resource is known to be not under copyright. See also the entry for dcterms:rights in this document and see the DCMI FAQ on DC and DCTERMS Namespaces for discussion of the rationale for terms in two namespaces. Normal practice is to use the same Label if both are provided. Labels have no effect on information discovery and are only suggestions.
Examples	`Copyright 2014 Ron Thomas` or a URI like `http://creativecommons.org/licenses/by/3.0/legalcode`
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/rights

rightsIRI

Title (Label)	Rights IRI
Namespace	dcterms
Table:	Usage Policy
Description	A URI pointing to structured information about rights held in and over the resource. Examples include http://creativecommons.org/licenses/by/3.0/legalcode and http://creativecommons.org/publicdomain/zero/1.0/. At least one of dcterms:rights and dc:rights must be supplied but, when feasible, supplying both may make the metadata more widely useful. They must specify the same rights. In case of ambiguity, dcterms:rights prevails.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/rights

rightsHolder

Title (Label)	Rights Holder
Namespace	dcterms
Table:	Usage Policy
Description	A name of a dcterms:Agent that owns or manages rights over a resource.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/rightsHolder

rightsHolderID

Title (Label)	Rights Holder ID
Namespace	dcterms
Table:	Usage Policy
Description	An identifier for a dcterms:Agent that owns or manages rights over a resource.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://purl.org/dc/terms/rightsHolder

owner

Title (Label)	Owner
Namespace	xmprights
Table:	Usage Policy
Description	A name of a dcterms:Agent that owns the copyright for a resource.
Comments	`unknown`
Examples	`The names of the owners `Ron Thomas, Roz Thomas` or a URI that identifies the owner`
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/rights/Owner

ownerID

Title (Label)	Owner ID
Namespace	xmprights
Table:	Usage Policy
Description	An identifier for a dcterms:Agent that owns the copyright for a resource.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/rights/Owner

usageTerms

Title (Label)	Usage Terms
Namespace	xmprights
Table:	Usage Policy
Description	A license statement defining how resources may be used. Information on a collection applies to all contained objects unless an object has a different statement.
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/rights/UsageTerms

webStatement

Title (Label)	Web Statement
Namespace	xmprights
Table:	Usage Policy
Description	A URL defining or further elaborating on a license statement (e.g., a web page explaining the precise terms of use).
Examples	`http://creativecommons.org/licenses/by-nc-sa/3.0/us/`
Type	string
dcterms:isVersionOf	http://ns.adobe.com/xap/1.0/rights/WebStatement

accessRights

Title (Label)	Access Rights
Namespace	dcterms
Table:	Usage Policy
Description	Information about who can access the resource or an indication of its security status.
Comments	Access Rights may include information regarding access or restrictions based on privacy, security, or other policies.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/accessRights

license

Title (Label)	License
Namespace	dcterms
Table:	Usage Policy
Description	A legal document giving official permission to do something with a resource.
Comments	Recommended practice is to identify the license document with a URI. If this is not possible or feasible, a literal value that identifies the license may be provided.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/license

licenseLogoURL

Title (Label)	License Logo URL
Namespace	ac
Table:	Usage Policy
Description	A URL providing access to a logo that symbolizes a dcterms:license.
Comments	The originating metadata provider is strongly urged to choose a suitable logo as a graphical representation of the license. Failure to do so may leave downstream aggregators in a difficult position to supply a logo that adequately represents the professional, legal, or social aims of the licensors (license givers). Example: http://i.creativecommons.org/l/by-nc-sa/3.0/us/88x31.png provides access to a logo image.
Examples	`http://i.creativecommons.org/l/by-nc-sa/3.0/us/88x31.png`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/licenseLogoURL
dcterms:references	http://rs.tdwg.org/ac/terms/version/licenseLogoURL-2020-01-27

licensingException

Title (Label)	Licensing Exception
Namespace	ac
Table:	Usage Policy
Description	The licensing statement for this variant of the ac:Media resource if different from that given in the dcterms:license property of the resource.
Comments	Required only if this version has different licensing than that of a corresponding ac:Media resource. For example, the highest resolution version may be more restricted than lower resolution versions.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/licensingException
dcterms:references	http://rs.tdwg.org/ac/terms/version/licensingException-2020-01-27

credit

Title (Label)	Credit
Namespace	photoshop
Table:	Usage Policy
Description	Free text describing how credit should be attributed.
Comments	For example, `Please cite this as…`.
Type	string
dcterms:isVersionOf	http://ns.adobe.com/photoshop/1.0/Credit

attributionLogoURL

Title (Label)	Attribution Logo URL
Namespace	ac
Table:	Usage Policy
Description	The URL of the icon or logo image to appear in source attribution.
Examples	`http://www.morphbank.net/images/userLogos/11a.jpg`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/attributionLogoURL
dcterms:references	http://rs.tdwg.org/ac/terms/version/attributionLogoURL-2020-01-27

attributionLinkURL

Title (Label)	Attribution Link URL
Namespace	ac
Table:	Usage Policy
Description	The URL where information about ownership, attribution, etc. of the resource may be found.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/ac/terms/attributionLinkURL
dcterms:references	http://rs.tdwg.org/ac/terms/version/attributionLinkURL-2020-01-27

Material Usage Policy

Identifier: http://rs.tdwg.org/dwc/dwc-dp/material-usage-policy

Description: Rights, usage, and attribution statements applicable to a dwc:MaterialEntity.

dcterms:isVersionOf: http://example.com/term-pending//material-usage-policy

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
usagePolicyID	has	usage-policy	usagePolicyID	Yes
materialEntityID	for	material	materialEntityID	Yes

usagePolicyID

Title (Label)	Usage Policy ID
Namespace	dwc
Table:	Material Usage Policy
Description	An identifier for a dwc:UsagePolicy.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/usagePolicyID

materialEntityID

Title (Label)	Material Entity ID
Namespace	dwc
Table:	Material Usage Policy
Description	An identifier for a dwc:MaterialEntity.
Comments	Values of dwc:materialEntityID are intended to uniquely and persistently identify a particular dwc:MaterialEntity within some context. Examples of context include a particular sample collection, an organization, or the worldwide scale. Recommended best practice is to use a persistent, globally unique identifier. The identifier is bound to a physical object (a dwc:MaterialEntity) as opposed to a particular digital record (representation) of that physical object.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/materialEntityID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/materialEntityID-2023-09-13

Media Usage Policy

Identifier: http://rs.tdwg.org/dwc/dwc-dp/media-usage-policy

Description: Rights, usage, and attribution statements applicable to an ac:Media entity.

dcterms:isVersionOf: http://example.com/term-pending//media-usage-policy

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
usagePolicyID	has	usage-policy	usagePolicyID	Yes
mediaID	for	media	mediaID	Yes

usagePolicyID

Title (Label)	Usage Policy ID
Namespace	dwc
Table:	Media Usage Policy
Description	An identifier for a dwc:UsagePolicy.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/usagePolicyID

mediaID

Title (Label)	Media ID
Namespace	dwc
Table:	Media Usage Policy
Description	An identifier for an ac:Media resource.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/mediaID

Organism Relationship

Identifier: http://rs.tdwg.org/dwc/dwc-dp/organism-relationship

Description: A dwc:ResourceRelationship of one dwc:Organism to another dwc:Organism.

Comments: An OrganismRelationship must be a permanent relationship. Ephemeral relationships between dwc:Organisms should be recorded as dwc:OrganismInteractions.

Examples:

`an instance of a dwc:Organism is the mother of another instance of a dwc:Organism`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/ResourceRelationship

Relationships to Other Tables

Field	Predicate	Target Table	Target Field	Required
subjectOrganismID	of	organism	organismID	Yes
relatedOrganismID	to	organism	organismID	No
relationshipAccordingToID	according to	agent	agentID	No

organismRelationshipID

Title (Label)	Organism Relationship ID
Namespace	dwc
Table:	Organism Relationship
Description	An identifier for a dwc:ResourceRelationship.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/resourceRelationshipID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/resourceRelationshipID-2023-06-28

subjectOrganismID

Title (Label)	Subject Organism ID
Namespace	dwc
Table:	Organism Relationship
Description	An identifier for the dwc:Organism that is the subject of a dwc:ResourceRelationship.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismID-2023-06-28

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Organism Relationship
Description	A relationship of a subject resource (identified by dwc:subjectOrganismID) to a related resource (identified by dwc:relatedOrganismID).
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`same as` `duplicate of` `mother of` `offspring of` `sibling of` `parasite of` `host of` `valid synonym of` `located within` `pollinator of members of taxon` `pollinated specific plant` `pollinated by members of taxon` `on slab with`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

relationshipTypeIRI

Title (Label)	Relationship Type IRI
Namespace	dwc
Table:	Organism Relationship
Description	An IRI of a controlled vocabulary value for the type of a dwc:ResourceRelationship.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Examples	`http://purl.obolibrary.org/obo/RO_0002456` (for the relation pollinated by) `http://purl.obolibrary.org/obo/RO_0002455` (for the relation pollinates) `https://www.inaturalist.org/observation_fields/879` (for the relation eaten by)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResourceID-2023-06-28

relationshipTypeSource

Title (Label)	Relationship Type Source
Namespace	dc
Table:	Organism Relationship
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:relationshipType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relatedOrganismID

Title (Label)	Related Organism ID
Namespace	dwc
Table:	Organism Relationship
Description	An identifier for the related dwc:Organism (the object) of a dwc:ResourceRelationship.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismID-2023-06-28

externalRelatedOrganismID

Title (Label)	External Related Organism ID
Namespace	dwc
Table:	Organism Relationship
Description	An identifier for the related dwc:Organism (the object) of a dwc:ResourceRelationship that is not within the same dataset.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/organismID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/organismID-2023-06-28

externalRelatedOrganismSource

Title (Label)	External Related Organism Source
Namespace	dc
Table:	Organism Relationship
Description	A reference to a source outside the dataset where the related dwc:Organism record can be found.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relationshipOrder

Title (Label)	Relationship Order
Namespace	dwc
Table:	Organism Relationship
Description	A numerical position of a dwc:ResourceRelationship in a set of dwc:ResourceRelationships that have the same combination of dwc:organismID, dwc:relatedOrganismID, dwc:relationshipType, dwc:relationshipTypeIRI, and dwc:relationshipTypeSource.
Comments	One could use relationshipOrder to create an ordered list of authors for a Reference, for example. The first would have relationshipOrder=1, the second would have relationshipOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/relationshipOrder

relationshipAccordingTo

Title (Label)	Relationship According To
Namespace	dwc
Table:	Organism Relationship
Description	A name of a dcterms:Agent responsible for asserting a dwc:ResourceRelationship.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipAccordingTo
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipAccordingTo-2018-09-06

relationshipAccordingToID

Title (Label)	Relationship According To ID
Namespace	dwc
Table:	Organism Relationship
Description	An identifier for a dcterms:Agent responsible for asserting a dwc:ResourceRelationship.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": false, "unique": false}
dcterms:isVersionOf	http://example.com/term-pending/dwc/relationshipAccordingToID

relationshipEstablishedDate

Title (Label)	Relationship Established Date
Namespace	dwc
Table:	Organism Relationship
Description	A date on which a dwc:ResourceRelationship was established.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

relationshipRemarks

Title (Label)	Relationship Remarks
Namespace	dwc
Table:	Organism Relationship
Description	Comments or notes about a dwc:ResourceRelationship.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipRemarks-2023-06-28

Resource Relationship

Identifier: http://rs.tdwg.org/dwc/dwc-dp/resource-relationship

Description: A relationship of one rdfs:Resource (http://www.w3.org/2000/01/rdf-schema#Resource) to another.

Comments: Resources can be thought of as identifiable records or instances of classes and may include, but need not be limited to instances of dwc:Occurrence, dwc:Organism, dwc:MaterialEntity, dwc:Event, dcterms:Location, dwc:GeologicalContext, dwc:Identification, or dwc:Taxon.

Examples:

`an instance of a dwc:Organism is the mother of another instance of a dwc:Organism`

`a uniquely identified dwc:Occurrence represents the same dwc:Occurrence as another uniquely identified dwc:Occurrence`

`a dwc:MaterialEntity is a subsample of another dwc:MaterialEntity`

dcterms:isVersionOf: http://rs.tdwg.org/dwc/terms/ResourceRelationship

resourceRelationshipID

Title (Label)	Resource Relationship ID
Namespace	dwc
Table:	Resource Relationship
Description	An identifier for a dwc:ResourceRelationship.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": true}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/resourceRelationshipID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/resourceRelationshipID-2023-06-28

subjectResourceID

Title (Label)	Subject Resource ID
Namespace	dwc
Table:	Resource Relationship
Description	An identifier for the resource that is the subject of a dwc:ResourceRelationship.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
Constraints	{"required": true, "unique": false}
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/resourceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/resourceID-2018-09-06

subjectResourceType

Title (Label)	Subject Resource Type
Namespace	dc
Table:	Resource Relationship
Description	A category that best matches the nature of a subject resource.
Comments	Recommended best practice is to use a controlled vocabulary consisting of the classes of resources that can be related to each other.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

subjectResourceTypeIRI

Title (Label)	Subject Resource Type IRI
Namespace	dcterms
Table:	Resource Relationship
Description	An IRI of a controlled vocabulary value for the type of a subject resource.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

subjectResourceTypeSource

Title (Label)	Subject Resource Type Source
Namespace	dc
Table:	Resource Relationship
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:subjectResourceType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relationshipType

Title (Label)	Relationship Type
Namespace	dwc
Table:	Resource Relationship
Description	A relationship of a subject resource (identified by dwc:subjectResourceID) to a related resource (identified by dwc:relatedResourceID).
Comments	Recommended best practice is to use a controlled vocabulary.
Examples	`same as` `duplicate of` `mother of` `offspring of` `sibling of` `parasite of` `host of` `valid synonym of` `located within` `pollinator of members of taxon` `pollinated specific plant` `pollinated by members of taxon` `on slab with`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResource
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResource-2023-06-28

relationshipTypeIRI

Title (Label)	Relationship Type (IRI)
Namespace	dwc
Table:	Resource Relationship
Description	An IRI of a controlled vocabulary value for the type of a dwc:ResourceRelationship.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Examples	`http://purl.obolibrary.org/obo/RO_0002456` (for the relation pollinated by) `http://purl.obolibrary.org/obo/RO_0002455` (for the relation pollinates) `https://www.inaturalist.org/observation_fields/879` (for the relation eaten by)
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipOfResourceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipOfResourceID-2023-06-28

relationshipTypeSource

Title (Label)	Relationship Type Source
Namespace	dc
Table:	Resource Relationship
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:relationshipType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relatedResourceID

Title (Label)	Related Resource ID
Namespace	dwc
Table:	Resource Relationship
Description	An identifier for the related resource (the object) of a dwc:ResourceRelationship.
Comments	Recommended best practice is to use a globally unique identifier.
Examples	`dc609808-b09b-11e8-96f8-529269fb1459`
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relatedResourceID
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relatedResourceID-2018-09-06

externalRelatedResourceID

Title (Label)	External Related Resource ID
Namespace	dcterms
Table:	Resource Relationship
Description	An identifier for the related resource (the object) of a dwc:ResourceRelationship that is not within the same dataset.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/identifier

externalRelatedResourceSource

Title (Label)	External Related Resource Source
Namespace	dc
Table:	Resource Relationship
Description	A reference to a source outside the dataset where the related resource can be found.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relatedResourceType

Title (Label)	Related Resource Type
Namespace	dc
Table:	Resource Relationship
Description	A category that best matches the nature of a related resource.
Comments	Recommended best practice is to use a controlled vocabulary consisting of the classes of resources that can be related to each other.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/type

relatedResourceTypeIRI

Title (Label)	Related Resource Type IRI
Namespace	dcterms
Table:	Resource Relationship
Description	An IRI of a controlled vocabulary value for a type of related resource.
Comments	Recommended best practice is to use an IRI for a term in a controlled vocabulary.
Type	string
dcterms:isVersionOf	http://purl.org/dc/terms/type

relatedResourceTypeSource

Title (Label)	Related Resource Type Source
Namespace	dc
Table:	Resource Relationship
Description	A reference to a controlled vocabulary in which the definition of a value in dwc:relatedResourceType is given.
Type	string
dcterms:isVersionOf	http://purl.org/dc/elements/1.1/source

relationshipOrder

Title (Label)	Relationship Order
Namespace	dwc
Table:	Resource Relationship
Description	A numerical position of a dwc:ResourceRelationship in a set of dwc:ResourceRelationships that have the same combination of dwc:subjectResourceID, dwc:relatedResourceID, dwc:relationshipType, dwc:relationshipTypeIRI, and dwc:relationshipTypeSource.
Comments	One could use this term to create an ordered list of authors for a dcterms:BibliographicResource, for example. The first would have relationshipOrder=1, the second would have relationshipOrder=2.
Type	integer
Constraints	{"minimum": 1}
dcterms:isVersionOf	http://example.com/term-pending/dwc/relationshipOrder

relationshipAccordingTo

Title (Label)	Relationship According To
Namespace	dwc
Table:	Resource Relationship
Description	A name of a dcterms:Agent responsible for asserting a dwc:ResourceRelationship.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipAccordingTo
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipAccordingTo-2018-09-06

relationshipAccordingToID

Title (Label)	Relationship According To ID
Namespace	dwc
Table:	Resource Relationship
Description	An identifier for a dcterms:Agent responsible for asserting a dwc:ResourceRelationship.
Comments	Recommended best practice is to use a globally unique identifier.
Type	string
dcterms:isVersionOf	http://example.com/term-pending/dwc/relationshipAccordingToID

relationshipEstablishedDate

Title (Label)	Relationship Established Date
Namespace	dwc
Table:	Resource Relationship
Description	A date on which a dwc:ResourceRelationship was established.
Comments	Recommended best practice is to use a date that conforms to ISO 8601-1:2019.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipEstablishedDate
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipEstablishedDate-2025-06-12

relationshipRemarks

Title (Label)	Relationship Remarks
Namespace	dwc
Table:	Resource Relationship
Description	Comments or notes about a dwc:ResourceRelationship.
Type	string
dcterms:isVersionOf	http://rs.tdwg.org/dwc/terms/relationshipRemarks
dcterms:references	http://rs.tdwg.org/dwc/terms/version/relationshipRemarks-2023-06-28

Visual Summary

The diagram below shows an overview of the DwC-DP tables (boxes) and the relationships between them (arrows). To avoid clutter, the diagram simplifies the representation of the model in a variety of ways. First, myriad join tables (tables that connect two classes in many-to-many relationships, e.g., EventMedia, MaterialMedia, OccurrenceMedia, etc.) are represented with stacks of boxes by category (e.g., under the box labeled ...Media) rather than with separate boxes for each join table. The relationships to the tables connected through the join tables are represented by single arrows (e.g., to the Media table) and the label "join to" rather than the myriad arrows that would otherwise be required. Second, the directionality of the relationships are shown with arrows, but the fields that connect the tables (keys), the cardinality of those connections (uniqueness and whether they are required), and the nature of the relationships (predicates) are not shown. The keys, cardinality and predicates are all shown in the sections for each table titled "Relationships to Other Tables".

Figure 1. Overview of the Darwin Core Data Package (DwC-DP), showing tables (classes) and their relationships to each other. To further explore the relationships between tables, see the Darwin Core Data Package Relationship Explorer.

Darwin Core Data Packages (DwC-DP) vs Darwin Core Archives (DwC-A)

Both Darwin Core Data Packages (DwC-DP) and Darwin Core Archives (DwC-A) are implementation schemas that use the Darwin Core Standard to share biodiversity-related data.

DwC-DP fully supports non-checklist datasets traditionally published as DwC-As (observations and physical specimens, with extensions), but it goes far beyond, allowing richer data to be shared from these traditional datasets than was hitherto supported. Also, it empowers those who desire to share entirely new types of data (biotic surveys with inferred absence and abundance, hierarchical material entities, organism interactions, and nucleotide analyses, among others) via Darwin Core.

Table 1. Main differences between DwC-A and DwC-DP.

	DwC-A	DwC-DP
Guide	Darwin Core Text Guide	Darwin Core Data Package Guide
Data structure	Limited: “Star schema”, with a “Core” file and optional “Extensions”. Relationships only from Extensions to the Core. Flattened, “spreadsheet-like” Defined in: meta.xml	Relational: No “Core”, no “Extensions”, just tables. Multiple relationships between tables (Figure 1), details in the table definitions. Relational, “database-like” Defined in: datapackage.json
Data type	Cores: Event, Occurrence, Taxon Extensions: Chronometric Age, DNA, Identification, Identifier, Literature Reference, Media, MeasurementsOrFact, Survey	Agent, Assertion, Bibliographic Resource, Chronometric Age, Event, Geological Context, Identification, Identifier, Material, Media, Molecular Protocol, Nucleotide Analysis, Nucleotide Sequence, Occurrence, Organism, Organism Interaction, Protocol, Provenance, Survey, Survey Target, Usage Policy
Semantics	No explicit semantics	Darwin Core Conceptual Model
Dataset metadata	eml.xml	eml.xml
Data format	CSV, TSV	CSV, TSV

Figure 2. Schematic representations of DwC-A and DwC-DP. In DwC-A, "Extension" files can only be connected to "Core" file via the unique identifier for a row in the "Core" file. In DwC-DP, files can be connected in all of the ways shown in Figure 1.