[API-users] Update of GBIF occurrence index to latest Darwin Core standard
mblissett at gbif.org
Fri Jan 28 15:23:52 UTC 2022
Dear API users,
Next week we will update the GBIF.org occurrence index, API and website
to align with updates to the Darwin Core standard released last year.
Two changes deserve attention, as they may need minor changes to
existing code, scripts, queries etc:
1) A new basis of record, Material Citation, replaces the obsolete
Literature basis of record. Literature was removed from Darwin Core
some years ago, but GBIF's index retained the term since existing
datasets were using it. These records will now appear as Material
Citations, which has a broader definition:
Additionally, the "Unknown" basis of record will no longer be used,
instead records will be shown with an "Occurrence" basis of record.
2) The existing term Establishment Means now has an official vocabulary
in Darwin Core. The old GBIF enumeration will no longer be used, and
values of this term will instead be matched to an element of the new
See https://dwc.tdwg.org/list/#dwc_establishmentMeans for the term
definition and https://dwc.tdwg.org/em/ for the new vocabulary. GBIF's
vocabulary used for interpretation (containing synonyms etc) is here:
3) The terms Recorded By ID, Identified By ID and Subgenus are now part
of Darwin Core, and move from a GBIF namespace to the TDWG namespace.
(The change is visible in meta.xml files of Darwin Core Archive
downloads, and on verbatim occurrence records.)
Other changes include:
4) The new terms Degree of Establishment and Pathway are also supported,
in the same way as Establishment Means.
https://dwc.tdwg.org/list/#dwc_pathway / https://dwc.tdwg.org/pw/ /
5) New/additional terms including Vertical Datum, Verbatim
Identification, Subfamily, Infrageneric Epithet and Cultivar Epithet
will be shown on occurrences. Note these are not yet interpreted —
interpreting the taxonomic terms will require support from the GBIF
Backbone Taxonomy and Checklistbank.
The IPT's schemas will also be updated to allow publication of datasets
using these changed or updated terms. We will write to the IPT mailing
list with further details on this.
More information about the API-users