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The Southern Cascades Slope ecoregion is a transitional zone between the Cascades ecoregion and the drier Eastern Cascade Slopes and Foothills, characterized by moderately sloping mountains with medium to high gradient streams. Elevation varies from 3,600 to 6,300 feet (1,100 to 1,900 m).
The level III ecoregions in Oregon are the Coast Range (1), Willamette Valley (3), Cascades (4), Eastern Cascades Slopes and Foothills (9), Columbia Plateau (10), Blue Mountains (11), Snake River Plain (12), Klamath Mountains (78), and Northern Basin and Range (80). (Compare to map of Level IV ecoregions.)
The Cascades is bordered on the north by the North Cascades ecoregion, on the south by the Klamath Mountains ecoregion, on the east by the Eastern Cascades Slopes and Foothills, and on the west by the Willamette Valley and Puget Lowland ecoregions. It been subdivided into six Level IV ecoregions in Washington and Oregon, as described below ...
The standard reference is The Deciduous Forest of Eastern North America. [4] The adjoining forests in Canada are generally referred to as the Mixedwood Plains Ecozone or the Great Lakes-St.Lawrence Forest Region. 32 Texas Blackland Prairies; 33 East Central Texas Plains; 34 Western Gulf Coastal Plain; 36 Ouachita Mountains; 37 Arkansas Valley
The Eastern Cascades slopes of the Modoc Plateau are characterized by a mosaic of open ponderosa pine forest, grasslands, and shrublands. [18] Although high, these slopes and mountains are in the rain shadow of the Cascade Range , and hence are drier and more open.
Download QR code; Print/export Download as PDF; Printable version; In other projects ... Cascades: 6.2.8: Eastern Cascades Slopes and Foothills: 6.2.9:
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The depth of the canyons and the exposed metamorphic rocks result in stony soils on canyon slopes that retain little moisture. Lower north-facing slopes and upper south-facing slopes support Douglas-fir, ponderosa pine, and Idaho fescue. Lower south-facing slopes support bluebunch wheatgrass and arrowleaf balsamroot. Upper north-facing slopes ...