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Central and Southern Cascades forests
Mountain slope, Columbia River valley, Oregon
Source of bioregions data: Olson, D. M. and E. Dinerstein. The Global 200: Priority ecoregions for global conservation. (PDF file) Annals of the Missouri Botanical Garden 89:125-126.
Distinctiveness (1=highest,4=lowest): 3 (bioregionally
The ecoregion has in intermediate level of biodiversity for a temperate coniferous forest, with a high level of endemic amphibians.*
Conservation Status (1=most endangered, 5=most
intact): 3 (vulnerable)
Extensive logging, road building and hydroelectric development have fragmented the habitat. Fire suppression and the development of tree plantations have further decreased the quality of habitats in the region.*
|Tsuga heterophylla||(western hemlock)|
|Thuja plicata||(western red cedar)|
treeline, on the slope of Mt. Ranier, Washington with Mt. Adams in the distancea (c) 2005 James H. Bassett hires
river bluffs, Columbia River valley, Oregon (right: Multnomah Falls) (c) 2005 Steven J. Baskauf hires hires hires hires
forest opening, Hoodoo area, Oregon (c) 2005 Daniel P. Duran hires hires
* Ricketts, T.H., E. Dinerstein, D.M. Olson, C.J. Loucks, et al. (1999) Terrestrial Ecoregions of North America: A Conservation Assessment. World Wildlife Fund - United States and Canada. Island Press, Washington, D.C. pp. 222-224.