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South Central Rockies forests

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South Central Rockies forests

South Central Rockies forests
Subalpine forest in Shoshone National Forest, Wyoming
Ecology
Biome Temperate coniferous forest
Bird species 201[1]
Mammal species 99[1]
Geography
Country United States
States Montana, Idaho, Wyoming and South Dakota
Conservation
Habitat loss 1.6644%[1]
Protected 82.66%[1]

The South Central Rockies forests is a temperate coniferous forest ecoregion of the United States located mainly in Wyoming, Idaho, and Montana. It has a considerably dryer climate than the North Central Rockies forest.

Setting

This ecoregion is located mainly in western Wyoming, but also in eastern and central Idaho, central Montana, northeastern Wyoming and southwestern South Dakota. It is centered on the Yellowstone Plateau, extending outward on connected mountain ranges, but the ecoregion also includes the isolated Bighorn Mountains and Black Hills, as well as smaller isolated ranges in central Montana. The area has a dry continental climate, with brief summers and long, cold winters.[2]

Flora

The ecoregion is predominantly coniferous forest, dominated by lodgepole pine (Pinus contorta latifolia) due to relatively recent major fires in the area. Other trees include Engelmann spruce (Picea engelmanni), Rocky Mountain Douglas-fir (Pseudotsuga menziesii glauca), subalpine fir (Abies lasiocarpa) and trembling aspen (Populus tremuloides). Whitebark pine (Pinus albicaulis) is an important species at the upper tree line/krummholz zone. This ecoregion also contains mountain meadows, foothills grasslands, riparian woodlands, and alpine tundra. In some areas, geothermal activity creates distinct, warm habitats with unique floral communities.

Fauna

Mammals of this ecoregion include elk (Cervus canadensis), mule deer (Odocoileus hemionus), bighorn sheep (Ovis canadensis), plains bison (Bison bison bison), Shiras moose (Alces alces shirasi), cougar (Puma concolor), grizzly bear (Ursus arctos horribilus), gray wolf (Canis lupus), black bear (Ursus americanus cinnamomum), bobcat (Lynx rufus) and Canada lynx (Lynx canadensis), coyote (Canis latrans), North American beaver (Castor canadensis), North American river otter (Lontra canadensis), and snowshoe hare (Lepus americanus).[3]

Conservation status and protected areas

Though large portions of this ecoregion are protected, its conservation status is listed as "vulnerable". Indiscriminate logging of unprotected areas and the deaths of grizzly bears and possibly wolves by ungulate hunters are the main threats to this ecoregion's integrity. Protected areas include Yellowstone National Park in northwestern Wyoming, south-central Montana and eastern Idaho, Grand Teton National Park in western Wyoming, Cloud Peak Wilderness in north-central Wyoming, and Black Elk Wilderness in southwestern South Dakota.

See also

References

  1. ^ a b c d Hoekstra, J. M.; Molnar, J. L.; Jennings, M.; Revenga, C.; Spalding, M. D.; Boucher, T. M.; Robertson, J. C.; Heibel, T. J.; Ellison, K. (2010). Molnar, J. L., ed. The Atlas of Global Conservation: Changes, Challenges, and Opportunities to Make a Difference.  
  2. ^ "South Central Rockies forests". Terrestrial Ecoregions. World Wildlife Fund. 
  3. ^ http://www.nationalgeographic.org/wildworld/profiles/terrestrial/na/na0528.html South Central Rockies forests (National Geographic)

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