Underestimation of primary production as indicated by measurements with size-fractionated phytoplankton in Lake Maarsseveen I (The Netherlands)

B.J.G. Flik, M. Bos, K. Royackers, J. Ringelberg

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Primary productivity of four size classes of phytoplankton (<150μm, <50μm, <20μm and <5μm) was measured from March through October 1986 in Lake Maarsseveen I with an incubator technique. The mean column production was approximately 400 mg C.m−2.day−1, with a range of values between 150 and 750 mg C.m−2.day−1. The mean contribution of the size fractions <50μm, <20μm and <5μm to the size fraction<150μm was 80%, 60% and 35%, respectively. During their appearance the grazing impact of small herbivorous zooplankton,e.g. rotifers, can give an underestimation of the size fraction <150μm. An indication of this phenomenon is given.
Original languageUndefined
Pages (from-to)39-47
JournalHydrobiological bulletin
Issue number1
Publication statusPublished - 1987


  • herbivorous zooplankton
  • Primary production
  • IR-85817
  • grazing
  • phytoplankton size fractionation

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