2011•Anhui nongye kexueRequires access
Study on the Community Structure of Planktons in Baohu Lake
Xiaoxue Sun
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Abstract
Based on the data in Baohu Lake in July and August.2009,the species composition,phytoplankton density,phytoplankton biomass and dominate species of the phytoplankton in Baohu Lake were discussed in this paper.Result suggested that 7 phyla,33 genera and 44 species of phytoplankton in Baohu Lake were identified.The community was composed by 36.4% Chlorophyta,36.4% Cyanophyta,11.4%Bacillariophyta,and 15.8%others.The dominant species were five kinds of Cyanophyta.The Margalef index was 2.617.The Shannon index was 4.197 and the Evenness index was 2.554.The zooplankton in Baohu Lake was composed by 70%Rotifera,20% a Copepoda and 10% Cladocera.The dominant species were five kinds of Rotifera.The Shannon index was 1.512.The dominance index was 0.529 and the Evenness index was 0.426.Comprehensive evaluation concluded that the water body of Baohu Lake was of medium Eutrophication.