Eastern Cascades Slopes and Foothills
Temperate coniferous forests ecoregion of the United States / From Wikipedia, the free encyclopedia
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The Eastern Cascades Slopes and Foothills ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) in the U.S. states of Oregon, Washington, and California. In the rain shadow of the Cascade Range, the eastern side of the mountains experiences greater temperature extremes and receives less precipitation than the west side. Open forests of ponderosa pine and some lodgepole pine distinguish this region from the Cascades ecoregion, where hemlock and fir forests are more common, and from the lower, drier ecoregions to the east, where shrubs and grasslands are predominant. The vegetation is adapted to the prevailing dry, continental climate and frequent wildfire. Volcanic cones and buttes are common in much of the region.[1][2]
Eastern Cascades Slopes and Foothills ecoregion | |
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Ecology | |
Realm | Nearctic |
Biome | Temperate coniferous forests |
Borders | |
Geography | |
Country | United States |
States |
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Coordinates | 44.0°N 122.0°W / 44.0; -122.0 |
The Eastern Cascades Slopes and Foothills ecoregion has been subdivided into ten Level IV ecoregions, as described below. Level IV mapping is not yet complete in California, and the information below includes only the sections in Washington and Oregon.