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• Amphibians_CONUS_Range_2001v1 (0)

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Spatial Reference: 102100  (3857)


Single Fused Map Cache: false

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Spatial Reference: 102100  (3857)

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Spatial Reference: 102100  (3857)

Units: esriMeters

Supported Image Format Types: PNG32,PNG24,PNG,JPG,DIB,TIFF,EMF,PS,PDF,GIF,SVG,SVGZ,BMP

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Comments: 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 hydrologic unit within the range included values for origin (native, introduced, reintroduced, vagrant), occurrence (extant, possibly present, potentially present, extirpated), reproductive use (breeding, non-breeding, both) and season (year-round, summer, winter, migratory, vagrant). These species range data provide the biological context within which to build our species distribution models. More information on the underlying data for this service is available at: https://www.sciencebase.gov/catalog/item/5951527de4b062508e3b1e79 Subject: U.S. Geological Survey Gap Analysis Project Species Range Maps for Amphibians
Subject: U.S. Geological Survey - Gap Analysis Project Species Range Maps CONUS 2001 Web Service for Amphibians
Category:
Keywords: Gap Analysis Project, Species Ranges, Amphibians
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Supports Dynamic Layers: true

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