The phytoplankton species composition and the seasonal periodicity in Lake Vechten from 1956 to 1979

  • Marianne C. I. Blaauboer
Part of the Developments in Hydrobiology book series (DIHY, volume 11)


The species composition and seasonal periodicity of the phytoplankton in Lake Vechten (The Netherlands) have been studied over a 20 year period. The results show a more or less regular pattern of algal succession during the year. Phytoplankton growth starts early in the year leading to a maximum in early spring, dominated by Bacillariophyceae and some Chlorophyceae. In summer a second maximum develops mainly consisting of a chrysophycean and a dinophycean species, accompanied by several Chlorophyceae. In September the summer species are gradually succeeded by diatoms. By the end of the summer stratification in October algal numbers decrease rapidly. The winter community consists of several species of Cryptophyceae and Chrysophyceae.

When the data of 1975–1979 are compared with those from earlier records, distinct changes can be observed. These changes are discussed with reference to the trophic status of the lake. The vertical distribution of some species is described.


phytoplankton species composition seasonal periodicity vertical distribution 


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Copyright information

© Dr W. Junk Publishers, The Hague 1982

Authors and Affiliations

  • Marianne C. I. Blaauboer
    • 1
  1. 1.‘Vijverhof’ LaboratoryLimnological InstituteNieuwersluisThe Netherlands

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