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Cascade Mountains leeward forests (WWF ecoregion NA0507)

Ponderosa pine near Leavenworth, Wahington
Ponderosa pines near Leavenworth, Wahington (c) 2005 Carol and Steve Baskauf


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): 4 (nationally important)
Large predators including grizzly bear are still found in this ecoregion..*

Conservation Status (1=most endangered, 5=most intact): 4 (relatively stable)
70% of habitat remains as intact habitat.  Logging, grazing, and fragmentation by transportation corridors are threats.*

Characteristic species*
 
Alpine tundra:
Picea engelmannii  (Engelmann spruce)
Abies lasiocarpa  (subalpine fir)
Pinus contorta  (lodgepole pine)
 
Montane forests
Pinus contorta  (lodgepole pine)
Populus tremuloides (quaking aspen)
Picea glauca  (white spruce)
Pseudotsuga menziesii  (Douglas fir)
 
Parkland:
Fire-resistant Pinus ponderosa, Wenatchee Ntl. Forest, WA
Fire-resistant ponderosa pine, Wenatchee Ntl. Forest, WA (c) 2005 Carol and Steve Baskauf  hires
 
Pinus ponderosa (ponderosa pine
Agropyron spp., e.g. Agropyron spicatum (Pseudoroegneria spicata ssp. spicata)   (wheatgrass)  
Artemisia tridentata  (big sagebrush)

 

Views from habitats in the ecoregion

Icicle Canyon, Wenatchee Ntl. Forest, WA Icicle Canyon, Wenatchee Ntl. Forest, WA
mixed conifer forest, Icicle Canyon, Wenatchee Ntl. Forest, Washington (c) 2005 Carol and Steve Baskauf  hires  hires  

Riparian area, Icicle Creek, Wenatchee Ntl. Forest, WA Riparian area, Icicle Creek, Wenatchee Ntl. Forest, WA Riparian area, Icicle Creek, Wenatchee Ntl. Forest, WA
riparian area, Icicle Creek, Wenatchee Ntl. Forest, Washington (c) 2005 Carol and Steve Baskauf  hires  hires  hires

Washington Pass, Okanogin Ntl. Forest, WA Washington Pass, Okanogin Ntl. Forest, WA Washington Pass, Okanogin Ntl. Forest, WA
treeline forest, Washington Pass, Okanogan Ntl. Forest, Washington (c) 2005 Carol and Steve Baskauf  hires  hires  hires

Okanogin Ntl. Forest, WA dry slope, Okanogin Ntl. Forest, WA dry slope, Okanogin Ntl. Forest, WA
dry south-facing slope, Okanogan Ntl. Forest, Washington (c) 2005 Carol and Steve Baskauf  hires  hires  hires

spruce kill, Okanogin Ntl. Forest, WA
spruce killed by spruce bud worm, Okanogan Ntl. Forest, Washington (c) 2005 Carol and Steve Baskauf  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. 337-340.

Except as noted, images copyright 2002-2005 Steve Baskauf - Terms of use