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Digital ecosystem information portraying the location and boundaries of
the ecosystems. The Service originally chose the U.S. Geological
Survey's Hydrologic Unit Map as the foundation for delineating ecosystem
unit boundaries on a national scale. Since that time, boundaries in some
of the regions have been moved to the closest county boundaries to
simplify management responsibilities. The current unit boundaries
reflect this combination.
Data Provided By:
U.S. Fish and Wildlife Service
Content date:
not specified
Citation:
Title: U.S. Fish and Wildlife Service Ecosystem regions Credits: U.S. Fish and Wildlife Service Publication Date: 2000314 Online Linkages:
Refuge boundary data were compiled for use with natural resource mapping and GIS applications. It is inappropriate to use these data in legal situations, or other applications where spatial error cannot exceed the USGS 7.5-minute mapping standards.
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