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首页> 美国政府科技报告 >Effects of Elevated Ammonia Levels on the Fingernail Clam, 'Musculium transversum', in Outdoor Experimental Streams
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Effects of Elevated Ammonia Levels on the Fingernail Clam, 'Musculium transversum', in Outdoor Experimental Streams

机译：室外实验流中氨水平升高对指甲蛤“肌横裂”的影响

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摘要

The effects of ammonia on survival, growth, and reproduction of the fingernail clam. Musculium transversum were tested in outdoor experimental streams. In the summers of 1983 and 1984 caged clams were exposed in the streams. During the 1983 studies, the weekly mean NH 3 ranges in the low, medium and high concentration streams were, respectively, 0.02-0.08, 0.04-0.25 and 0.14-0.56 mg/l; in 1984 the ranges in the same streams were 0.04-0.20, 0.07-0.38 and 0.48-1.17 mg/L. In the first year studies, survival was highest (50-85%) in the control and low NH3 streams, lower (30-55%) in the medium NH3 stream and no clams survived the high NH3 treatment. Growth was also greater in the control and low NH3 streams.

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