, Volume 351, Issue 1–3, pp 77–94 | Cite as

The zooplankton of Lake Mikri Prespa

  • E. Michaloudi
  • M. Zarfdjian
  • P. S. Economidis


A study from June 1990 to October 1992 revealed thatthe pelagic zooplankton community of Lake Mikri Prespaconsists of 45 invertebrate species (28 Rotifera, 11Cladocera, 6 Copepoda and 1 mollusc). It includes A. steindachneri, an endemic calanoid of the WesternBalkans. Half of the species are first records for thelake.The total abundance and biomass ranged from 61 to 905 indl−1 and 58 to 646 µg l−1,respectively. Seasonal fluctuations agreed with thePEG-model. Copepods prevailed throughout the year. Thespecies composition and seasonal variability wereaffected by temperature-dependent food conditions,competition and predation. These factors induced aseasonal succession which involved a replacement oflarger species or individuals by smaller ones duringsummer. The cladoceran population, as a whole, wascharacterised by small size classes of the speciespresent, probably due to fish predation. Anexamination of the horizontal distribution showedthat, although seasonal variability was the same atall stations sampled, the central station showedhigher abundance. Inshore-offshore diel migrations ofjuvenile fish is considered to account for this unevendistribution. Shannon‘s diversity index ranged from0.98 to 2.95 and evenness from 0.3 to 0.9. Both wereinfluenced by temperature.

zooplankton species composition endemism seasonal variability Greece 


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Copyright information

© Kluwer Academic Publishers 1997

Authors and Affiliations

  • E. Michaloudi
    • 1
  • M. Zarfdjian
    • 1
  • P. S. Economidis
    • 1
  1. 1.Department of ZoologyAristotle University of ThessalonikiThessalonikiGreece

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