Seasonal Abundance of Crustacean Zooplankton and Net Plankton Biomass of Lakes Huron, Erie, and Ontario

摘要: Crustacean zooplankton concentrations (numbers per m3) in the upper 50 m found lakewide cruises during all or most of seasons on lakes Ontario and Erie 1970 Lake Huron 1971 showed that species crustaceans present three were generally identical, although times maxima relative compositions differed. Calanoid copepods abundant diverse western Erie. Cyclopoids cladocerans Saginaw Bay region Huron. The cyclopoid throughout year was Diacyclops bicuspidatus thomasi; Tropocyclops prasinus Acanthocyclops vernalis especially Erie, respectively. Cladocerans numerous Ontario. Numbers individuals fluctuated markedly through season with spring summer months lakes.Biomass values (ash-free dry weight) hig...