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The Eastern Temperate Forests is a Level I ecoregion of North America designated by the Commission for Environmental Cooperation (CEC) in its North American Environmental Atlas. The region covers much of the Eastern and Midwestern United States, the U.S. Interior Highlands, and parts of Ontario, Quebec, and the Maritimes.
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.
Temperate broadleaf and mixed forests: Eastern Great Lakes lowland forests: Canada: Nearctic: Temperate broadleaf and mixed forests: Eastern Great Lakes lowland forests: United States: Nearctic: Temperate broadleaf and mixed forests: Eastern forest-boreal transition: Canada: Nearctic: Temperate broadleaf and mixed forests: Eastern forest-boreal ...
The boreal forests of the early Quaternary enjoyed a modest expansion. Riparian, bottomland, and wetland plant communities expanded. The grassy woodlands contracted and retracted westward. [6] Prescribed fire in Virginia, 1995. Many eastern ridgetops were burned by American Indians.
1990 USDA Hardiness zone map detail for the northeast US. Zone 3a is light orange, zone 4b is light lavender. The area is a temperate broadleaf and mixed forests biome transition zone between the true boreal forest to the north and the Big Woods and Carolinian forest to the south, with characteristics of each.
The Appalachian–Blue Ridge forests are an ecoregion in the Temperate broadleaf and mixed forests Biome, in the Eastern United States. The ecoregion is located in the central and southern Appalachian Mountains , including the Ridge-and-Valley Appalachians and the Blue Ridge Mountains .
Alaska is the most biodiverse state with 15 ecoregions across three biomes in the same realm. California comes in a close second with 13 ecoregions across four biomes in the same realm. By contrast, Rhode Island is the least biodiverse with just one ecoregion—the Northeastern coastal forests —encompassing the entire state.
At lower elevations to the east are the Middle Atlantic coastal forests on the Atlantic coastal plain. Similarly, the Southeastern conifer forests occupy the Gulf coastal plain to the south. Higher, and to the north and west, are the Appalachian-Blue Ridge forests and the Appalachian mixed mesophytic forests of the Appalachian Mountains. [2]