The effect of Cyanophyta upon zooplankton in a eutrophic tropical lake (Lake Valencia,Venezuela) |
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Authors: | Aida Infante Wendula Riehl |
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Affiliation: | (1) Escuela de Biología, Universidad Central, Apartado 47106, 1041 Los Chaguaramos, Caracas, Venezuela |
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Abstract: | The effect which Cyanophyta have upon the zooplankton varies according to the form of the alga (mucilaginous colonies or filaments) and its abundance. Periodical blooms of Microcystis aeruginosa were not detrimental for the zooplankton, in spite of the fact that copepods, cladocerans and rotifers consume small colonies. High concentrations of Lyngbya limnetica and Oscillatoria limnetica in Lake Valencia, Venezuela, proved to be inhibitory for cladocerans. A total absence of cladocerans was detected when filaments increased. |
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Keywords: | tropical zooplankton disappearance of cladocerans cyanophytes interfering eutrophic lake |
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