The rotifer communities of acid-stressed lakes of Maine

  • Michael T. Brett
Conference paper
Part of the Developments in Hydrobiology book series (DIHY, volume 52)


The structure of the rotifer community in relation to lake pH, trophic status, the type of planktivore assemblage and the crustacean community was assessed in a survey of 23 lakes ranging in pH from 4.4 to 7.3, and in a study of two lakes — one acidic, the other circumneutral — during two summers. In both investigations the number of rotifer species encountered per sample was strongly reduced with pH. Although the reason for this is not clear acid-stress, the ultraoligotrophic nature of the acidic lakes, and competitive interactions with crustacean zooplankters may all have played a role. More importantly the ecological significance of this relationship is not known. The rotifer Keratella taurocephala was a principle species in the most acidic lakes, while several common rotifers were notably absent from these lakes. Although rotifer abundance was correlated with lake pH, the results of this study indicate that rotifer abundance is not a result of lake pH per se, but of lake trophic status and interactions with the crustacean community.

Key words

rotifer communities acidification Maine 


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Copyright information

© Kluwer Academic Publishers 1989

Authors and Affiliations

  • Michael T. Brett
    • 1
  1. 1.Institute of LimnologyUppsala UniversityUppsalaSweden

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