The Shannon-Wiener Biodiversity Index was implemented for Zooplankton Diversity (BDI)
in Lake Kinneret (1970-2001). It was computed
based on monthly mean densities in relation to Epilimnetic temperatures. 4, 5 and 9 species of
Copepoda, Cladocera and Rotifera, respectively, were included. Direct relations
between Epilimnetic temperatures and Zooplankton Bio-Diversity Indexes (BDI)
were indicated: Matching was found between low BDI and the high summer
temperature and between higher BDI and the low winter temperature as well.
Similar correspondence did not indicate annual means of BDI values. Zooplankton
density and temperature probably resulted from smoothed confound of the
averaged temperature changes. Conclusively, in themonomicticLakeKinneret located in the temperate zone with a high degree of temperature
fluctuation, causation of seasonal BDI fluctuations is possible. The
consistence of global warming trend might, therefore, enhance the seasonality
of BDI values changes with implications for water quality.
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