Ecoregions

Ecoregions denote areas within which ecosystems (and the type, quality, and quantity of environmental resources) are generally similar. They are designed to serve as a spatial framework for environmental resource management. 

Source: US Geological Survey

Visit the EPA website for more information about ecoregions in the United States. 

RELATED ARTICLES

2/4/2014

The Willamette Valley-Puget Trough-Georgia Basin Ecoregional Assessment

The Willamette Valley-Puget Trough-Georgia Basin Ecoregional Assessment considers 833 conservation targets identified by expert teams, proposing that if those targets are represented in an ecoregion, a majority of species, including those which lack data, will be included.

Aerial view of the Vashon Island shoreline.
6/18/2012

The Puget Lowland ecoregion

Ecoregions provide a useful framework and background for the discussion of marine, freshwater, and terrestrial environs of the county. The discussion of ecoregions is based on U.S. Environmental Protection Agency (EPA) ecoregion conventions, which result in units similar to European biogeographical regions because they denote areas of general similarity in ecosystems.

King County map, showing incorporated land and major water bodies. Copyright King County.
6/18/2012

The North Cascades ecoregion

Ecoregions provide a useful framework and background for the discussion of marine, freshwater, and terrestrial environs of the county. The discussion of ecoregions is based on U.S. Environmental Protection Agency (EPA) ecoregion conventions, which result in units similar to European biogeographical regions because they denote areas of general similarity in ecosystems.

King County map, showing incorporated land and major water bodies. Copyright King County.
6/18/2012

The Cascades ecoregion

Ecoregions provide a useful framework and background for the discussion of marine, freshwater, and terrestrial environs of the county. The discussion of ecoregions is based on U.S. Environmental Protection Agency (EPA) ecoregion conventions, which result in units similar to European biogeographical regions because they denote areas of general similarity in ecosystems.