Crayfish and Bivalve Distribution in a Valley in Southwestern Ohio
Creators:St. John, F. Lee
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Citation:The Ohio Journal of Science. v82, n5 (December, 1982), 242-246
The crayfish and bivalve fauna of 2 stream systems in an ancient valley in southwestern Ohio were examined. The distribution of the various species was mapped and the topography and environmental conditions of each collecting site were noted. The greatest diversity of species was usually found at the edge of the valley, while environmentally stressed sites harbored neither decapods nor bivalves. One species of crayfish, Orconectes sloanii, was found in the northwestern drainage system of the valley, but not in the southeastern drainage system, even though the 2 stream systems were once connected.
Author Institution: Department of Zoology, The Ohio State University
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