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Mono-Adobe Valleys

Ecoregion in CA

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The Mono/Adobe Valleys ecoregion includes the nearly level to gently sloping lake plain around Mono Lake at the base of the Sierra Nevada ecoregion (5), as well as the Adobe Valley to the southeast. Pleistocene and recent lacustrine deposits predominate. Ash layers occur from eruptions of the numerous volcanic domes that are mostly in adjacent Ecoregion 13x. Elevations range from 6,400 to 7,200 feet, with relief of 200–400 feet. Soil temperature regimes are mesic and soil moisture regimes are aridic. Big sagebrush, bitterbrush, and some singleleaf pinyon occur. Greasewood occurs in seep areas. Water from Sierra Nevada streams that flows to Mono Lake historically has been diverted for municipal use in Los Angeles, affecting lake levels and chemistry.

— EPA

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