Registered Extensions

The Audiovisual Core is a set of vocabularies designed to represent metadata for biodiversity multimedia resources and collections. These vocabularies aim to represent information that will help to determine whether a particular resource or collection will be fit for some particular biodiversity science application before acquiring the media. Among others, the vocabularies address such concerns as the management of the media and collections, descriptions of their content, their taxonomic, geographic, and temporal coverage, and the appropriate ways to retrieve, attribute and reproduce them.

Name	Multimedia
Namespace	http://rs.tdwg.org/ac/terms/
RowType	http://rs.tdwg.org/ac/terms/Multimedia
Issued	2024-11-07
Keywords	None

An extension to Occurrence and Event cores to capture information relating to DNA. This extension is based on the MIxS extension for Darwin Core (underway), with additions from GGBN and MIQE standards and recommendations. This definition supports the outcomes documented in Publishing DNA-derived data through biodiversity data platforms (https://doi.org/10.35035/doc-vf1a-nr22). This extension is subject to change, and recommended for early adopters who understand that data remapping may be required as things evolve.

Name	dnaDerivedData
Namespace	http://rs.gbif.org/terms/1.0/
RowType	http://rs.gbif.org/terms/1.0/DNADerivedData
Issued	2024-07-11
Keywords

Extended support for Darwin Core Events related to ecological inventories.

Name	HumboldtEcologicalInventory
Namespace	http://rs.tdwg.org/eco/terms/
RowType	http://rs.tdwg.org/eco/terms/Event
Issued	2024-04-16
Keywords	dwc:Event

Extension to Occurrence Core to capture chronometric age information to be used only in cases where the collecting event is not contemporaneous with the time when the dwc:Organism was alive in its context. Collection event information can be reported in dwc:eventDate. See also the normative term list document at https://chrono.tdwg.org/list/ and the human-friendly Quick Reference Guide at https://chrono.tdwg.org/terms/.

Name	ChronometricAge
Namespace	http://rs.tdwg.org/chrono/terms/
RowType	http://rs.tdwg.org/chrono/terms/ChronometricAge
Issued	2024-03-11
Keywords	dwc:Occurrence

Support for Darwin Core Occurrence-based records.

Name	Occurrence
Namespace	http://rs.tdwg.org/dwc/terms/
RowType	http://rs.tdwg.org/dwc/terms/Occurrence
Issued	2024-02-23
Keywords	dwc:Event dwc:Taxon

Support for Darwin Core Event-based records.

Name	Event
Namespace	http://rs.tdwg.org/dwc/terms/
RowType	http://rs.tdwg.org/dwc/terms/Event
Issued	2024-02-19
Keywords

Support for Darwin Core Taxon-based records.

Name	Taxon
Namespace	http://rs.tdwg.org/dwc/terms/
RowType	http://rs.tdwg.org/dwc/terms/Taxon
Issued	2024-02-19
Keywords

Extended support for multiple identifications (determinations) of species Darwin Core Occurrences. All identifications including the most current one should be listed, while the current one should also be repeated in the Darwin Core Occurrence Core.

Name	Identification
Namespace	http://rs.tdwg.org/dwc/terms/
RowType	http://rs.tdwg.org/dwc/terms/Identification
Issued	2024-02-19
Keywords	dwc:Occurrence

Extended support for multiple measurements or facts associated with a Darwin Core Occurrence, Event, or Taxon Core.

Name	MeasurementOrFacts
Namespace	http://rs.tdwg.org/dwc/terms/
RowType	http://rs.tdwg.org/dwc/terms/MeasurementOrFact
Issued	2024-02-19
Keywords	dwc:Occurrence dwc:Event dwc:Taxon

Extended support for relationships between resources in a Darwin Core Occurrence, Event, or Taxon Core to resources in an extension or external to the data set. The identifiers for subject (resourceID) and object (relatedResourceID) may exist in the dataset or be accessible via an externally resolvable identifiers.

Name	ResourceRelationship
Namespace	http://rs.tdwg.org/dwc/terms/
RowType	http://rs.tdwg.org/dwc/terms/ResourceRelationship
Issued	2024-02-19
Keywords	dwc:Occurrence dwc:Event dwc:Taxon

Plinian Core is a set of concepts that defines the necessary basic attributes to integrate and recover the information about species of organisms required by users specialized in biodiversity as well as users of other areas. This extension is supposed to be used in addition to the taxon core and the simple images, vernacular names and references extension.

Name	PlinianCore
Namespace	http://purl.org/plic/terms/3.2.1/
RowType	http://purl.org/plic/terms/3.2.1/PlinianCore
Issued	2023-11-30
Keywords	plic:Plinian Core; dwc:Taxon

Species geographical distribution.

Name	Distribution
Namespace	http://purl.org/plic/terms/3.2.1/
RowType	http://purl.org/plic/terms/3.2.1/Distribution
Issued	2023-11-30
Keywords	plic:Distribution; dwc:Taxon

National and/or regional proposed law or group of laws.

Name	Legislation
Namespace	http://purl.org/plic/terms/3.2.1/
RowType	http://purl.org/plic/terms/3.2.1/Legislation
Issued	2023-11-30
Keywords	plic:Legislation; dwc:Taxon

Ways in which species are utilized by people. Including Folklore. Also applied to Animals and Fungi.

Name	Uses
Namespace	http://purl.org/plic/terms/3.2.1/
RowType	http://purl.org/plic/terms/3.2.1/Uses
Issued	2023-11-30
Keywords	dwc:Taxon; plic:Uses

Support for generic measurements or facts, extended version linking to occurrences. This extension (eMoF) was developed to be used in combination with the Event Core, but is also compatible with other cores. When used with Event Core it allows to create an additional link between the eMoF and the occurrence extension. The eMoF can store measurements or facts related to a biological occurrence, environmental measurements or facts and sampling method attributes. This extension also provides the option to provide identifiers to reference a vocabulary for the measurementType, measurementValue and measurementUnit fields.

Name	ExtendedMeasurementOrFact
Namespace	http://rs.iobis.org/obis/terms/
RowType	http://rs.iobis.org/obis/terms/ExtendedMeasurementOrFact
Issued	2023-08-28
Keywords

Extended support for dwc:Events related to ecological inventories.

Name	HumboldtEcologicalInventory
Namespace	http://rs.tdwg.org/eco/terms/
RowType	http://rs.tdwg.org/eco/terms/HumboldtInventory
Issued	2023-08-09
Keywords	dwc:Event

Information pertaining to physical objects (sensu http://rs.tdwg.org/dwc/terms/MaterialEntity).

Name	Material
Namespace	http://rs.tdwg.org/dwc/terms/
RowType	http://rs.tdwg.org/dwc/terms/MaterialEntity
Issued	2023-04-30
Keywords	dwc:Event dwc:Taxon dwc:Occurrence

Extension to Taxon Core to capture (nomenclatural) name relations as found in ColDP. This extension is an adaptation of the col:NameRelation entity to Darwin Core Taxon records.

Name	NameRelation
Namespace	https://terms.catalogueoflife.org/
RowType	https://terms.catalogueoflife.org/NameRelation
Issued	2022-12-14
Keywords	dwc:Taxon

Support for all kinds of permits as an extension for Material Sample core sample data in Darwin Core. Intended to be a one to many relation to the Material Sample core.

Name	Permit
Namespace	http://data.ggbn.org/schemas/ggbn/terms/
RowType	http://data.ggbn.org/schemas/ggbn/terms/Permit
Issued	2022-08-08
Keywords

Extension to Event Core to capture inventory metadata.

Name	HumboldtInventoryEventExtension
Namespace	http://rs.tdwg.org/hc/terms/
RowType	http://rs.tdwg.org/hc/terms/HumboldtInventory
Issued	2022-03-02
Keywords	dwc:Event

Geographic distribution of a taxon. Replaces version issued 2020-07-15 with establishmentMeans, degreeOfEstablishment and pathway properties and vocabularies.

Name	Distribution
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/Distribution
Issued	2022-02-02
Keywords	dwc:Taxon

Birds Canada, Bird Monitoring Data Exchange extension for Darwin Core

Name	BirdMonitoring
Namespace	http://www.birdscanada.org/bmde/
RowType	http://www.birdscanada.org/bmde/Observation
Issued	2020-10-17
Keywords	dwc:Occurrence

Extension to Occurrence Core to capture agents and optionally the specific roles they played in the context of executing actions on occurrences.

Name	AgentActions
Namespace	https://tdwg.github.io/attribution/people/dwc/
RowType	https://tdwg.github.io/attribution/people/dwc/AgentActions
Issued	2020-09-08
Keywords	dwc:Occurrence

A basic species profile with characteristics in addition to textural description which are covered by the description extension.

Name	SpeciesProfile
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/SpeciesProfile
Issued	2019-01-29
Keywords	dwc:Taxon

This extension has been DEPRECATED! Please use the newer ChronometricAge extension instead: https://rs.gbif.org/extension/zooarchnet/ChronometricAge_2020-10-06.xml

Name	ChronometricAge
Namespace	http://zooarchnet.org/dwc/terms/
RowType	http://zooarchnet.org/dwc/terms/ChronometricAge
Issued	2018-11-13
Keywords	dwc:Occurrence

This extension has been DEPRECATED! Please use the newer ChronometricAge extension instead: http://rs.gbif.org/extension/gbif/1.0/ChronometricAge.xml

Name	ChronometricDate
Namespace	http://zooarchnet.org/dwc/terms/
RowType	http://zooarchnet.org/dwc/terms/ChronometricDate
Issued	2018-03-29
Keywords	dwc:Occurrence

A Darwin Core Archive extension for specifying the relationsips between taxon concepts, based on the 'TaxonRelationshipAssertion' element of the TDWG Taxon Concept Transfer (XML) Schema. Relationship types include Set Theory types (included_in, etc.) and taxonomic parent-child relationships. Taxon Concepts are specified in the DwCA 'Taxon' module, where a record must have: 1. a name (and ideally also a scientificNameID), 2. a nameAccordingTo (and ideally also a nameAccordingToID), and 3. a taxonConceptID. The latter is used as the key for subjectTaxonConceptID and objectTaxonConceptID in this module.

Name	TaxonConceptRelationship
Namespace	http://rs.gbif.org/sandbox/terms/tcs/tcrel.rdf#
RowType	http://rs.gbif.org/sandbox/terms/tcs/tcrel.rdf#TaxonConceptRelationship
Issued	2017-08-25
Keywords	None

Different names for this taxon. This concept is a placeholder field.

Name	Synonyms
Namespace	http://purl.org/plic/terms/3.2.1/
RowType	http://purl.org/plic/terms/3.2.1/Synonyms
Issued	2016-12-02
Keywords	plic:Synonyms; dwc:Taxon

A marker that indicates that an organism lives exclusively in a particular territory and can not be found anywhere else. List of areas structured and categorized by the degree of safety.

Name	Endemism
Namespace	http://purl.org/plic/terms/3.2.1/
RowType	http://purl.org/plic/terms/3.2.1/Endemicity
Issued	2016-12-02
Keywords	plic:Endemicity; dwc:Taxon

Information about the conservation status of the taxon.

Name	ThreatStatus
Namespace	http://purl.org/plic/terms/3.2.1/
RowType	http://purl.org/plic/terms/3.2.1/ThreatStatus
Issued	2016-12-02
Keywords	plic:threatStatus; dwc:Taxon

Management: actions directed at conserving or restoring species. / Conservation: interventions undertaken designed to preserve species.

Name	ManagementAndConservation
Namespace	http://purl.org/plic/terms/3.2.1/Legislation
RowType	http://purl.org/plic/terms/3.2.1/ManagementAndConservation
Issued	2016-12-02
Keywords	plic:ManagementAndConservation; dwc:Taxon

Support for vegetation plot survey (relevé) measurements ancillary to those reported using Event core with Occurrence extension. Note all coverage measurements are in percentage.

Name	Releve
Namespace	http://rs.gbif.org/terms/1.0/
RowType	http://rs.gbif.org/terms/1.0/Releve
Issued	2016-05-10
Keywords	dwc:Event

DwC Taxon extension to exchange invasive species area distributions. It is based on the GBIF distribution extension but adds invasiveness and uses other vocabuarlies

Name	Distribution
Namespace	http://rs.gbif.org/issg/terms/
RowType	http://rs.gbif.org/issg/terms/Distribution
Issued	2016-04-21
Keywords	dwc:Taxon checklist

DwC Taxon extension to exchange invasive species pathways.

Name	Pathways
Namespace	http://rs.gbif.org/issg/terms/
RowType	http://rs.gbif.org/issg/terms/Pathways
Issued	2016-04-20
Keywords	dwc:Taxon checklist

Support for DNA Amplifications as an extension for Material Sample core sample data in Darwin Core. Intended to be a one to many relation to the Material Sample core.

Name	Amplification
Namespace	http://data.ggbn.org/schemas/ggbn/terms/
RowType	http://data.ggbn.org/schemas/ggbn/terms/Amplification
Issued	2016-01-13
Keywords

Support for DNA Cloning as an extension for Material Sample core sample data in Darwin Core. Intended to be a one to many relation to the Material Sample core.

Name	Amplification
Namespace	http://data.ggbn.org/schemas/ggbn/terms/
RowType	http://data.ggbn.org/schemas/ggbn/terms/Cloning
Issued	2016-01-13
Keywords

Support for gel image properties as an extension to an Material Sample core. Intended to be a one to many relation to the Material Sample core.

Name	GelImage
Namespace	http://data.ggbn.org/schemas/ggbn/terms/
RowType	http://data.ggbn.org/schemas/ggbn/terms/GelImage
Issued	2016-01-13
Keywords

Support for loan properties (e.g. specimens, tissues, DNA, RNA) as an extension to a Material Sample core. Intended to be a one to one relation to the Material Sample core.

Name	Loan
Namespace	http://data.ggbn.org/schemas/ggbn/terms/
RowType	http://data.ggbn.org/schemas/ggbn/terms/Loan
Issued	2016-01-13
Keywords

Support for material sample properties (e.g. tissues, DNA, RNA) as an extension to a Material Sample core. Intended to be a one to one relation to the Material Sample core.

Name	MaterialSample
Namespace	http://data.ggbn.org/schemas/ggbn/terms/
RowType	http://data.ggbn.org/schemas/ggbn/terms/MaterialSample
Issued	2016-01-13
Keywords

Support for preparation properties as an extension to an Material Sample core. Intended to be a one to many relation to the Material Sample core.

Name	Preparation
Namespace	http://data.ggbn.org/schemas/ggbn/terms/
RowType	http://data.ggbn.org/schemas/ggbn/terms/Preparation
Issued	2016-01-13
Keywords

Support for all kinds of preservations as an extension for Material Sample core sample data in Darwin Core. Intended to be a one to many relation to the Material Sample core.

Name	Preservation
Namespace	http://data.ggbn.org/schemas/ggbn/terms/
RowType	http://data.ggbn.org/schemas/ggbn/terms/Preservation
Issued	2016-01-13
Keywords

DwC Taxon extension to exchange simple text/paragraph based taxon descriptions. Not suitable for structured descriptions and keys, but useful for creating species pages.

Name	Description
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/Description
Issued	2015-02-13
Keywords	dwc:Taxon checklist

Name	Identifier
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/Identifier
Issued	2015-02-13
Keywords

This extension has been DEPRECATED! Please use the newer Multimedia extension instead: http://rs.gbif.org/extension/gbif/1.0/multimedia.xml

Name	Image
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/Image
Issued	2015-02-13
Keywords	dwc:Taxon dwc:Occurrence

Bibliography, i.e. list of literature references. For example a taxon or occurrence/specimen.

Name	Reference
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/Reference
Issued	2015-02-13
Keywords

An extension for specimens and types, including type specimens, type species and type genera and simple specimens unrelated to types.

Name	TypesAndSpecimen
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/TypesAndSpecimen
Issued	2015-02-13
Keywords	dwc:Taxon

Extension to core taxa that lists vernacular names for a scientific taxon

Name	VernacularName
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/VernacularName
Issued	2015-02-13
Keywords	dwc:Taxon

Simple extension for exchanging metadata about multimedia resources, in particular links to image, video and audio files.

Name	Multimedia
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/Multimedia
Issued	2015-02-13
Keywords

WARNING! THIS DRAFT GERMPLASM EXTENSION HAS BEEN DEPRECATED. SEE: http://rs.gbif.org/extension/germplasm/ FOR THE CURRENT GERMPLASM EXTENSIONS.

Name	GermplasmSample
Namespace	http://rs.nordgen.org/dwc/germplasm/0.1/terms/
RowType	http://rs.nordgen.org/dwc/germplasm/0.1/terms/GermplasmSample
Issued	2015-02-13
Keywords	dwc:Occurrence

UK NBN Darwin Core extension for mapping NBN eXchange Format (NXF) files to DwC-A. This extension is likely only applicable for UK National Biodiversity Network and its data providers, and contains some UK specific oddities. This extension is a DRAFT and is to be considered VOLITILE.

Name	nxf
Namespace	http://rs.nbn.org.uk/dwc/nxf/0.1/terms/
RowType	http://rs.nbn.org.uk/dwc/nxf/0.1/terms/nxfOccurrence
Issued	2015-02-13
Keywords	dwc:Occurrence

These terms are representation-dependent metadata, referring to specific digital representations of a resource.

Name	Multimedia
Namespace	http://rs.tdwg.org/ac/terms/
RowType	http://rs.tdwg.org/ac/terms/Multimedia#ServiceAccessPointVocabulary
Issued	2015-02-13
Keywords	None

Information about the number of chromosomes of a species

Name	Chromosomes
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/Chromosomes
Issued	2015-02-13
Keywords	dwc:Taxon

Die Kurzbezeichnung Zeigerwerte nach Ellenberg für die "Ökologischen Zeigerwerte von Pflanzen in Mitteleuropa" ist ein von Heinz Ellenberg Mitte der 1970er-Jahre erstmals ausführlich beschriebenes Klassifikationsverfahren für mitteleuropäische Pflanzen nach ihrem ökologischen "Verhalten" und botanischen Eigenschaften. Die Zeigerwerte nach Ellenberg sind von ökologischen und botanischen Beobachtungen und Erfahrungen abgeleitete und inzwischen größtenteils durch Standortanalysen und ökophysiologische Untersuchungen bestätigte beziehungsweise abgesicherte Kenngrößen für einzelne Pflanzenarten.

Name	Ellenberg
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/Ellenberg
Issued	2015-02-13
Keywords	dwc:Taxon

Name	SpeciesStatus
Namespace	http://www.gisin.org/IASProfile
RowType	http://www.gisin.org/IASProfile/SpeciesStatus
Issued	2015-02-13
Keywords	None

Links of related webpages. Links can be classified with keywords (dc:subject) and should point to human friendly webpages.

Name	Links
Namespace	http://rs.gbif.org/terms/1.0
RowType	http://rs.gbif.org/terms/1.0/Links
Issued	2015-02-13
Keywords	dwc:Occurrence dwc:Taxon

The Germplasm Vocabulary provides a set of terms (supplementing the Darwin Core terms) for describing genebank accessions. These terms are maintained by the thematic community of plant genetic resources for food and agriculture (PGRFA). Most of these terms are imported from the Multi-Crop Passport Descriptor List (MCPD) maintained by Bioversity International and the Food and Agriculture Organization of the United Nations (FAO). Some terms were also developed by the European Cooperative Programme for Plant Genetic Resources (ECPGR).

Name	GermplasmAccession
Namespace	http://purl.org/germplasm/germplasmTerm#
RowType	http://purl.org/germplasm/germplasmTerm#GermplasmAccession
Issued	2014-05-20
Keywords	None

Trait measurements or the so-called Characterization and Evaluation (C and E) data for plant genetic resources for food and agriculture (PGRFA). The germplasm vocabulary term g.germplasmID is a persistent identifier for the germplasm material (genebank accession, specimen, cultivar, etc that was the subject of the measurement experiment. NB! please report stable and resolvable persistent identifiers for g.germplasmID term when linking the trait measurement score to a germplasm occurrence described in an external Darwin Core archive. When linking to trait measurement descriptors and measurement trials described extenally to the Darwin Core archive, please include stable and resolvable persistent identifiers for g.measurementTraitID and g.measurementTrialID - resolving to information on each entity.

Name	MeasurementScore
Namespace	http://purl.org/germplasm/germplasmTerm#
RowType	http://purl.org/germplasm/germplasmTerm#MeasurementScore
Issued	2014-05-15
Keywords	None

Trait descriptors describing methods and protocols followed when making trait measurements or the so-called Characterization and Evaluation (C and E) data for plant genetic resources for food and agriculture (PGRFA).

Name	MeasurementTrait
Namespace	http://purl.org/germplasm/germplasmTerm#
RowType	http://purl.org/germplasm/germplasmTerm#MeasurementTrait
Issued	2014-05-08
Keywords	None

Measurement trial (field or greenhouse) to collect trait measurements or so-called Characterization and Evaluation (C and E) data for plant genetic resources for food and agriculture (PGRFA).

Name	MeasurementTrial
Namespace	http://purl.org/germplasm/germplasmTerm#
RowType	http://purl.org/germplasm/germplasmTerm#MeasurementTrial
Issued	2014-05-08
Keywords	None

This extension draws from Audubon Core, Dublin Core and others to gather information about text and multimedia. It was designed to contain all the metadata that is required to be indexed by the Encyclopedia of Life (EOL), but this extension is hopefully general enough to be useful to all text and media providers and consumers. The original extension was offline; this is a copy recovered from the Internet Archive. The issue date is estimated.

Name	EOLMediaExtension
Namespace	http://www.eol.org/schema/transfer#
RowType	http://eol.org/schema/media/Document
Issued	2010-01-01
Keywords	None

This extension draws from BIBO (http://bibliontology.com/), Dublin Core and others to gather information about citations and bibliographic references. The original extension was offline; this is a copy recovered from the Internet Archive. The issue date is estimated.

Name	EOLReferencesExtension
Namespace	http://www.eol.org/schema/transfer#
RowType	http://eol.org/schema/reference/Reference
Issued	2010-01-01
Keywords	None