Diversity of Zooplankton in Suyahu Reservoir during Summer
Taking the plankton of Suya Lake reservoir as the research object,this paper evaluates the plank-ton diversity of Suya Lake reservoir in summer,and provides a theoretical basis for the ecological protection of Suya Lake reservoir.The results were as follows:A total of 85 species of phytoplankton were detected in Suya Lake reservoir,with an average density of 4.54×106 cells/L,including 6 phyla,including 45 chlorophyta(genera),21 diatoma(genera),9 cyanophyta(genera),5 gymnophyta(genera),3 xanthophyta(genera)and 2 Cryptophyta(gener-a).There were 22 species of zooplankton with an average density of 3.92×104 ind/L,including 4 species,including 11 protozoa(genera),6 rotifers(genera),3 cladoceras(genera)and 2 copepods(genera).The mean values of Shannon-Wiener diversity index,Margalef richness index and Pielou's evenness index were 1.700,2.076 and 0.478,respec-tively.The mean values of Shannon-Wiener diversity index,Margalef richness index and Pielou's evenness index were 1.594,0.824 and 0.707,respectively.According to the classification and evaluation criteria of biodiversity threshold,the plankton diversity of Suya Lake reservoir is better.
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