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Upper Lahontan Basin

Ecoregion in Great Basin, NV

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The Upper Lahontan Basin lies outside of the rain shadow cast by the Sierra Nevada and records somewhat higher rainfall and cooler temperatures than other portions of the Lahontan Basin. Although its shadscale – greasewood plant community is similar to that in the Lahontan Salt Shrub Basin (13j), some species differ due to climate gradations. For example, Bailey greasewood is less common and Thurber needlegrass is more common in the Upper Lahontan Basin (13z) than in the Lahontan Salt Shrub Basin (13j). Ecoregion 13z also has a shorter growing season than the rest of the Lahontan Basin.

— EPA

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