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The Significance of Zooplankton in the Cycling of Phosphorus in Lakes of Different Trophic Categories

✍ Scribed by Boris L. Gutelmakher; Elena S. Makartseva

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
521 KB
Volume
75
Category
Article
ISSN
1434-2944

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✦ Synopsis

The species composition, number, biomass and phosphorus excretion rate (PER) of zooplankton (Crustacea and Rotatoria) in 8 mesotrophic and eutrophic lakes were studied. PER were calculated using specific expenditures on metabolism estimsted from the oxygen uptake, phosphorus content in zooplankton and field observations of number and biomass of planktonic Rotatoria and Crustacea. The zooplankton biomass and PER increased from mesotrophic to eutrophic lakes. The values of PER were compared with primary production and spring phosphorus concentration. The relative significance of zooplankton in phosphorus cycling declined with increasing trophic category of lakrs.

Contents n. I,. CUTELMAKHER

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