Investigation on Plankton Resources and Water Quality Analysis of Huating Lake in Anhui Province
The status of plankton in Huating Lake,Anhui Province was investigated in July and October 2022,and the water quality was evalu-ated using the Shannon-Wiener diversity index,Pielous evenness index and Margalef richness index,the current composition and diversity status of plankton communities in Huating Lake were studied.The result showed that there were 51 species of phytoplankton belonging to 6 phylums 34 genera in the lake.Cyanophyta was the main species(47.06％of the sum),followed by Chlorophyta(27.45％of the sum)and Bacillariophyta(11.77％of the sum).The average density and biomass of phytoplankton was 9.57×106 cell/L and 5.24 mg/L,respectively.There were 6 domi-nant species of phytoplankton,which were Microcystis botrys,Microcystis novacekii,Anabaena variabilis,Anabaena inaequalis of cyanobacteria and Melosira granulata,Melosira granulata var.angustissima f.spiralis of Bacillariophyta,their advantages were 0.476,0.043,0.035,0.023,0.054 and 0.071,respectively.The seasonal difference between Shannon-Wiener diversity index and Pielou evenness index of phytoplankton was not significant,while the Margalef richness index was greater in summer than in autumn.23 species belonging to 15 families 15 genera of zoo-plankton from 3 categories were identified.The amount of the Protozoa,Rotifer and Arthropoda of the zooplankton were 5,11,6 species,respec-tively.There were 3 dominant species of zooplankton,which were Keratella cochlearis of Rotifera and Thermocyclops hyalinus of Arthropoda and Nauplius,their advantages were 0.256,0.042 and 0.223,respectively.The Shannon-Wiener diversity index,Pielou evenness index and Margalef richness index of zooplankton were all higher in summer than in autumn.The water of the Huating Lake was little cleaner than mesotrophication according to the comprehensive evaluation of our investigation results.
万方数据
维普
