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Filters: Tags: Biodiversity and Ecosystems Theme (X) > Types: Citation (X) > partyWithName: U.S. Geological Survey - ScienceBase (X) > partyWithName: Science Analytics and Synthesis (X) > Types: OGC WMS Service (X)

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GAP species range data are coarse representations of the total areal extent a species occupies, in other words the geographic limits within which a species can be found (Morrison and Hall 2002). These data provide the geographic extent within which the USGS Gap Analysis Project delineates areas of suitable habitat for terrestrial vertebrate species in their species' habitat maps. The range maps are created by attributing a vector file derived from the 12-digit Hydrologic Unit Dataset (USDA NRCS 2009). Modifications to that dataset are described here. Attribution of the season range for each species was based on the literature and online sources (See Cross Reference section of the metadata). Attribution for each...


    map background search result map search result map U.S. Geological Survey - Gap Analysis Project Species Range Maps CONUS_2001 U.S. Geological Survey - Gap Analysis Project Species Range Maps CONUS_2001