Portland State University. Department of Biology
Date of Publication
Master of Science (M.S.) in Biology
Freshwater zooplankton -- Oregon -- Geographical distribution
1 online resource (100 p.)
Zooplankton samples were collected from 166 Oregon lakes. The lakes included a wide range in size, trophic status, and water quality. Lakes were located throughout the state. Zooplankton were identified using standard taxonomic keys and counted. Seventy-four species were identified from the 200 total samples, including 32 species of cladocera, 22 copepods, and 11 rotifers. Two species of copepod were recorded for the first time in Oregon: Diaptomus mississippiensis and Diaptomus pallidus. Seven species had widespread distributions throughout most of the watersheds in the state. Seventeen other species had distributions restricted to eastern, central, or western Oregon. The remaining species were either rare or had random distributions.
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Claska, Mary Elizabeth, "The distribution of zooplankton in selected Oregon lakes" (1988). Dissertations and Theses. Paper 3752.