The Darwin Core is designed to facilitate the exchange of information about the geographic occurrence of organisms and the physical existence of biotic specimens in collections. Extensions to the Darwin Core provide a mechanism to share additional information, which may be discipline-specific, or beyond the commonly agreed upon scope of the Darwin Core itself. The Darwin Core and its extensions are minimally restrictive of information content by design, since doing so would render the standard useless for the implementation of data quality tools.
Darwin Core was originally a product of The Species Analyst Project at the University of Kansas. During 2001-2003, under the Mammal Networked Information System (MaNIS) Project at UC Berkeley, in collaboration with the University of Kansas Biodiversity Research Center and the California Academy of Sciences, the first version of the Darwin Core 2 was developed in tandem with the DiGIR protocol and its publicly released provider and portal software. Until 2006 there was a proliferation of Darwin Core versions based on the originally published (version 1.2). MaNIS was the first deployment of a distributed database network based on DiGIR (16 June 2002), using a revision (version 1.21) of the original Darwin Core 2. It is version 1.21 upon which the proposed Darwin Core, Geospatial Extension, and Curatorial Extension are most closely based.
| Output/outcome | Timeframe |
|---|---|
| Darwin Task Group Charter | First draft: 11 Oct 2006. Latest draft: 19 Feb 2007 |
| Darwin Core Schema (Type 1, normative part + cover page) | Complete: 15 Sep 2006 |
| Geospatial Extension Schema (Type 1, normative part + cover page) | Complete: 15 Sep 2006 |
| Curatorial Extension Schema (Type 1, normative part + cover page) | Complete: 15 Sep 2006 |
| Contribute to TDWG Ontology Group & TDWG Architecture Group | Ongoing from 2005 |
| Cooperate with ABDC Group | Ongoing from 2006 |
| Cooperate with Geospatial Group | Ongoing from 2004 |
| Review and capture commentary from Darwin Core site at California Academy of Sciences to TDWG Wiki | Complete: 10 Oct 2006 |
| Update Darwin Core Concept Documentation | Complete: 15 Sep 2006 |
| Update Geospatial Extension Concept Documentation | Complete: 15 Sep 2006 |
| Update Curatorial Extension Concept Documentation | Complete: 15 Sep 2006 |
| Publish mapping between Darwin Core versions | Complete: 14 Feb 2007 |
| Publish mapping between Darwin Core and ABCD | Feb 2007 |
| Publish application schema for Darwin Core | Complete: 14 Feb 2007 |
| Test Darwin Core application schema for TAPIR | Complete: 15 Feb 2007 |
| Propose DwC, Geospatial, and Curatorial Extensions as TDWG standard | 19 Feb 2007 |