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      Seasonal abundance of small cladocerans in Lake Mangakaware, Waikato, New Zealand

      Greenwood, Tracey L.; Green, John D.; Hicks, Brendan J.; Chapman, M. Ann
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      Hicks - abundance of small.pdf
      1.589Mb
      DOI
       10.1080/00288330.1999.9516886
      Link
       www.royalsociety.org.nz
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      Greenwood T.L., Green, J.D., Hicks, B.J., Chapman, M.A (1999). Seasonal abundance of small cladocerans in Lake Mangakaware, Waikato, New Zealand. New Zealand Journal of Marine and Freshwater Research 33(3), 399-415.
      Permanent Research Commons link: https://hdl.handle.net/10289/1574
      Abstract
      The seasonal changes in the dynamics and life histories of the Cladocera in Lake Mangakaware, North Island, New Zealand, were studied over 19 months by sampling at weekly or 2-weekly intervals. Lake Mangakaware is a 13.3 ha polymictic lake with high nutrient status, low Secchi disc transparencies, and an unstable thermal regime. The four planktonic cladoceran species (Bosmina longirostris, B. meridionalis, Ceriodaphnia pulchella, and C. dubia) exhibited disjunct population maxima. Only B. longirostris was perennially present. All species exhibited low fecundities and low lipid content, indicating that food resources were limited and that competitive interactions and resistance to starvation were probably important in determining species success. Increases in body size in cooler seasons were unrelated to clutch size, giving further support for the view that available food was limited. These results are consistent with previous experimental findings that subtle differences in life history can determine seasonal success and the outcome of competition between similar species.
      Date
      1999-03
      Type
      Journal Article
      Publisher
      RSNZ Publishing
      Rights
      Copyright New Zealand Journal of Marine and Freshwater Research. Used with permission.
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      • Science and Engineering Papers [3124]
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