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Unified Ecoregions of Alaska: 2001

Open-File Report 2002-297

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Abstract

Major ecosystems have been mapped and described for the State of Alaska and nearby areas. Ecoregion units are based on newly available datasets and field experience of ecologists, biologists, geologists and regional experts. Recently derived datasets for Alaska included climate parameters, vegetation, surficial geology and topography. Additional datasets incorporated in the mapping process were lithology, soils, permafrost, hydrography, fire regime and glaciation. Thirty two units are mapped using a combination of the approaches of Bailey (hierarchial), and Omernick (integrated). The ecoregions are grouped into two higher levels using a 'tri-archy' based on climate parameters, vegetation response and disturbance processes. The ecoregions are described with text, photos and tables on the published map.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Unified Ecoregions of Alaska: 2001
Series title:
Open-File Report
Series number:
2002-297
ISBN:
0607995777
Edition:
-
Year Published:
2003
Language:
ENGLISH
Publisher:
Geological Survey (U.S.)
Contributing office(s):
Alaska Geospatial Data Clearinghouse
Description:
Map Sheet; Metadata; GIS Files
Additional Online Files(Y/N):
Y