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Inland Siskiyous

Ecoregion in Coast Ranges in CA, OR

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The forested Inland Siskiyous ecoregion occurs in Oregon with only two small areas extending across the California border. It is higher and more mountainous than neighboring foothill and valley ecoregions (78a, 78b, and 78c). Ecoregion 78e has a higher fire frequency, less annual precipitation, and longer summer droughts than the Coastal Siskiyous ecoregion (78f) to the west. Forest cover in Ecoregion 78e is a diverse and multi-layered mix of conifers, broadleaf evergreens, and deciduous trees and shrubs in contrast to the predominantly coniferous forests in the Coast Range (1) or Cascades (4) ecoregions.

— EPA

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Ecoregion