Ecoregions of Pacific Southwest Region of US Fish and Wildlife Service

These SEVEN geographic areas represent the general landscapes to be used for Strategic Habitat Conservaton in the Pacific Southwest Region of US Fish and Wildlife Service. These areas are generally based on Bailey's ecoregions as updated by the US Forest Service. Bailey's ecoregions distinguish areas that share common climatic and vegetation characteristics. These geographic areas represented by these landscapes generally represent the "section" or finest level of detail in Bailey's ecoregions. The most divergence from Bailey's occurs in the Klamath Basin region where the Klamath Basin landscape is more closely aligned with the USGS hydrological unit boundaries of that landscape. Some areas that generally would be considered part of the Klamath province have been assigned to other geographic landscapes including parts of the Modoc Plateau, Southern Cascades, and Klamath Mountains.