“…Previous studies on the zooplankton community in Lake Kasumigaura (YASUNO et al, 1977; MOKISHITA and YASUNO, 1979;YASUNO et al, 1981;HANAZATO and YASUNO, 1985a, 1987a, 1988 RICoARDS et al, 1975;GOLDMAN et al, 1979;RIEMAN and FALTER, 1981;LANGELAND, 1988). In Lake Stugusjoen (Norway), Cladocera was scarce when the biomass of mysids (Mysis relicta) was reportedly high (50-300 mg dry wtm-z) (LANGELAND, 1988).…”