Influence of Mine Acid on Planktonic Rotifers
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Citation:The Ohio Journal of Science. v80, n3 (May, 1980), 104-107
Planktonic rotifers were sampled in spring and summer from 2 lakes in southeastern Ohio. Unpolluted waters of Dow Lake were lower in sulfate and iron and higher in pH, hardness and alkalinity than acid mine polluted waters of Lake Hope. Rotifers of Dow Lake exceeded those of Lake Hope in species number, numerical abundance, species diversity, and faunal similarity among sample dates; similarity between lakes was negligible. Keratella cochlearis and Brachionus urceolaris, the most abundant rotifers in each of the respective lakes, both showed broad tolerances to pH. While B. urceolaris showed a large selective advantage at low pH, this was reduced and both species fared better at near-neutral pH. Neither species appeared sensitive to alternative pH conditions in preference tests.
Author Institution: Department of Zoology and Microbiolgy, Ohio University
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