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Sierra Nevada-Influenced Ranges

Ecoregion in Great Basin in CA, NV

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The Sierra Nevada-Influenced Ranges ecoregion includes the wooded Great Basin mountains that have climatic and biotic affinities to the Sierra Nevada. Ecoregion 13x receives greater precipitation than the mountain ranges of central Nevada; however, precipitation amounts vary from range to range in relation to the local strength of the Sierra Nevada rain shadow. Because of minimal summer rainfall, Ecoregion 13x contains pinyon – juniper woodland, but lacks oak and ceanothus species. The White, Sweetwater, Pine Nut, Wassuk, and Virginia Ranges of Nevada support varying amounts of Sierra Nevada flora, including small stands of ponderosa, lodgepole, Jeffrey, and western white pine. Scattered ephemeral pools perched over areas of flat, impermeable volcanic bedrock, similar to those in the High Lava Plains ecoregion (80g), support unique assemblages of flora and fauna. High ranges near the Sierra Nevada are more likely to have perennial streams. Bighorn sheep, deer, and black bear inhabit these mountains.

— EPA

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