The Mono Basin Ecosystem Effects of Changing Lake Level (1987) / Chapter Skim
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Executive Summary
Executive Summary
Pages 1-7
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Benthic and planktonic algae provide the major base of the food chain in the lake. The primary consumers are aquatic arthropods, mainly the pelagic brine shrimp (Artemia monica)
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The same legislation mandated this study by the National Research Council to review the available scientific information and to assess the potential effects of changing lake levels on the ecosystem of the Mono Basin. Various resources of the Mono Basin ecosystem -- aquatic biology, bird populations, and shoreline and upland environments -- are here assessed (see figure on the following page)
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The lower level of 6330 ft was it is the approximate stabilization level (i.e., inflows of water would equal loss through evaporation) , assuming exports of 100,000 acre-ft/yr of water from chosen Because
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Meromixis, with a less saline surface layer, could to some extent alleviate the effects of increasing salinity for the lake's biota. The algae in Mono Lake are fairly resistant to increased salinity, although their productivity is likely to decrease gradually at salinities above about 100 g/1 and decrease more rapidly above 150 g/1 (corresponding to lake levels of approximately 6370 ft and 6350 ft above sea level)
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The critical food resources for aquatic birds using Mono Lake are brine shrimp and brine flies. If the lake fell to levels at which the birds' food sources were adversely affected, the bird populations would be reduced.
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and 10 cfs are currently being maintained by court order in lower Rush Creek and lower Lee Vining Creek, respectively. The two hydrologic models of the basin
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~ ~ . be adequate to maintain rinarian lower Rush and Lee Vining creeks.
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