Steven G Williams

Protection Status of Terrestrial Vertebrate Species by Ecoregion

This provisional Biogeographic Analysis Package provides an analysis of protection status for select terrestrial vertebrate species within Omernik Level III Ecoregions. This package demonstrates how this species data can be combined with ecoregional boundaries and protected areas data to evaluate the protection of a species at the ecoregional scale. The package can be used to identify ecoregions where a species has the greatest representation in GAP Status 1 and 2 lands (lands managed for the protection of biodiversity) and the ecoregions where a species is the least protected. One important use of the data in this Biogeographic Analysis Package is to evaluate what proportion of the habitat of various species...

This is an experimental collection that implements an information model for biogeographic information. We are building this on the conceptual foundation from the Global Change Information System. We are using the Biogeographic Information System, accessed via the ScienceBase API, as a basis to drive an experimental new map interface (National Biogeographic Map) and a developing iterative report concept (National Biodiversity Assessment).

Gap Analysis Project Species

The Gap Analysis Project (GAP) is a core activity of the Biogeographic Characterization Branch. GAP produces and manages a set of species habitat distribution maps based on the 30-meter GAP land cover product. GAP species and subspecies are best represented within another ScienceBase collection that documents and houses the 2001 release of CONUS habitat maps. The items in that collection provide essential details for the TIR process within their identifiers (species names, GAP identifiers, ITIS TSN, and other related identifiers).