The study analyzes the the diversity of plankton in Gaoyou Lake in March and June 2021 through two samplings,and lays 6 research points.78 species belong to 61 genera,36 families,8 phyla are found in Gaoyou Lake,of which 40 species belong to Chlorphyta,16 species belong to of Bacillariophyta and 8 species belong to Cyanophyta,and the percentage of them are 51.3％,20.5％and 10.3％.The average density and biomass of phytoplankton are 20.62× 106 cell/L and 9.96 mg/L.A total of 55 metazoan zooplankton species are identified in Gaoyou Lake,31 rotifer species account for 56.4％of the total species,followed by cladocera(13 species)and copepods(11 species),accounting for 23.6％and 20％of the total species.The density and biomass of the zooplankton community are 2730.2 ind/L and 1.21 mg/L,respectively.The plankton biomass and density in Gaoyou Lake have obvious temporal and spatial differences,which are higher in the high water period than in the low water period.The Shannon-Wiener diversity index and the Margalef richness index of plankton show significant spatial variation characteristics.
维普
万方数据