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The World of Protozoa, Rotifera, Nematoda and Oligochaeta

Ref ID : 2706

Birger Pejler; Zooplanktic indicators of trophy and their food. Hydrobiologia 101:111-114, 1983

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Regarding specific food requirements zooplankters in oligotrophic forest lakes are compared with indicators of other trophic conditions. Most zooplanktic indicators of eutrophic conditions feed on very small particles, to a large extent on bacteria, while the indicators of oligotrophy may be filtrators of courser particles. Both categories comprise raptors as well. In both extremes of lake types, hypertrophy and ultraoligotrophy, feeders on minute particles increase in relative importance, while moderate eutrophy or oligotrophy render a higher diversity of species and feeding categories.