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The U.S. Geological Survey (USGS) has generated land surface form classes for the contiguous United States. These land surface form classes were created as part of an effort to map standardized, terrestrial ecosystems for the nation using a classification developed by NatureServe (Comer and others, 2003). Ecosystem distributions were modeled using a biophysical stratification approach developed for South America (Sayre and others, 2008) and now being implemented globally (Sayre and others, 2007). Land surface forms strongly influence the differentiation and distribution of terrestrial ecosystems, and are one of the key input layers in the ecosystem delineation process.The methodology used to produce these land surface...
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The USGS US Topo Availability service from The National Map (TNM) consists of footprints where US Topo is available in GeoPDF format. Various green tints are used to reflect the year in which latest US Topo map products are published. Information about the latest available US Topo maps can be discovered as well as product downloads from this service through an 'Identify' query. Service content is updated daily to ensure the most current map product is represented. If a user wants to download all current and historical USGS Topo Maps over a given area, these products are available at The National Map viewer (http://viewer.nationalmap.gov/viewer) or the USGS Store (http://store.usgs.gov). For additional information...
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Internet map viewer that displays WyGISC spatial data for Wyoming. The WyGISC Data Server was updated in July, 2010 - and specifically provides clip and zip functionality for basic data layers for Wyoming, as well as WyGISC-developed data.
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The U.S. Geological Survey (USGS) has generated and mapped isobioclimate classes for the contiguous United States. These isobioclimate classes were created as part of an effort to map standardized, terrestrial ecosystems for the nation using a classification developed by NatureServe (Comer and others, 2003). Ecosystem distributions were modeled using a biophysical stratification approach developed for South America (Sayre and others, 2008) and now being implemented globally (Sayre and others, 2007). Bioclimate regimes strongly influence the differentiation and distribution of terrestrial ecosystems, and are one of the key input layers in the ecosystem delineation process.The Rivas-Martínez methodology used to produce...
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The U.S. Geological Survey (USGS) has generated topographic moisture potential classes for the contiguous United States. These topographic moisture potential classes were created as part of an effort to map standardized, terrestrial ecosystems for the nation using a classification developed by NatureServe (Comer and others, 2003). Ecosystem distributions were modeled using a biophysical stratification approach developed for South America (Sayre and others, 2008) and now being implemented globally (Sayre and others, 2007). Substrate moisture regimes strongly influence the differentiation and distribution of terrestrial ecosystems, and are one of the key input layers in the ecosystem delineation process. The method...
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The U.S. Geological Survey (USGS) has generated a new classification and map of the lithology of surficial materials for the contiguous United States. This was developed as part of an effort to map standardized, terrestrial ecosystem distributions for the nation using a classification developed by NatureServe (Comer and others, 2003). This ecosystem mapping methodology, which delineates ecosystems by mapping and integrating their major structural components, was first developed for South America (Sayre and others, 2008) and is now being implemented globally (Sayre and others, 2007). Surficial lithology strongly influences the differentiation and distribution of terrestrial ecosystems, and is one of the key input...


    map background search result map search result map WyGISC Data Server Terrestrial Ecosystems - Isobioclimates of the Conterminous United States Terrestrial Ecosystems - Surficial Lithology of the Conterminous United States Terrestrial Ecosystems - Land Surface Forms of the Conterminous United States Terrestrial Ecosystems - Topographic Moisture Potential of the Conterminous United States USGS US Topo Availability Overlay Map Service from The National Map WyGISC Data Server Terrestrial Ecosystems - Land Surface Forms of the Conterminous United States Terrestrial Ecosystems - Surficial Lithology of the Conterminous United States Terrestrial Ecosystems - Topographic Moisture Potential of the Conterminous United States Terrestrial Ecosystems - Isobioclimates of the Conterminous United States USGS US Topo Availability Overlay Map Service from The National Map