Abstract
Hydropsychids were collected along the length of the Savannah River and its headwaters and tributaries. Species distribution was correlated with chemical and physical properties of water, altitude and stream size. Seven genera and 35 species were found among approximately 100,000 specimens collected. Fourteen species divided into three groups on the bases of altitude and stream size preferences. Turbidity, conductivity, temperature, carbonate, nitrate and nitrite increased along the river's course, whereas maximum velocity and dissolved oxygen decreased. For these factors the maximum value tolerated by a species was associated with the species distribution. The genera Hydropsyche and Cheumatopsyche were the most widely distributed. Several species of these two genera had quite large distributional ranges while others had quite restricted ranges.
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Elizabeth Gordon, A., Wallace, J.B. Distribution of the Family Hydropsychidae (Trichoptera) in the Savannah River Basin of North Carolina, South Carolina and Georgia. Hydrobiologia 46, 405–423 (1975). https://doi.org/10.1007/BF00028283
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DOI: https://doi.org/10.1007/BF00028283