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- W2364832018 abstract "Summarizing the data of surveys made in Hongfeng Lake in 1980,1990,1995,1997,1998,2005 and 2006,this paper discusses the main ecological changes of species composition,biomass,seasonal variation and biodiversity index of past 26 years.The average annual abundance of planktonic algae increased from hundreds to ten thousands of cells per ml of water.There was a highest biomass in summer and a marked biomass increase of Cyanophyta.The dominance of biomass was Cyanophyta from 1980 to 2006;the change of biomass of Chlorophyta and Bacillariophyta was not large.The species of Chlorophyta and Cyanophyta was dominant from 1980 to 2006,then Bacillariophyta.The species of phytoplankton tended to be miniaturized.Based on ecological changes of phytoplankton association as the main parameter,a biological assessment of eutrophication process in Hongfeng Lake at its present stage can be regarded as medium eutrophication—eutrophication—severe eutrophication,The process of pollution was light pollution to β-middle pollution—medium pollution—heavy pollution from 1980 to 2006.The trend of pollution was medium pollution in recent years." @default.
- W2364832018 created "2016-06-24" @default.
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- W2364832018 date "2007-01-01" @default.
- W2364832018 modified "2023-09-28" @default.
- W2364832018 title "Ecological changes of phytoplankton(1980—2006) in Hongfeng Lake and the study of eutrophica trend" @default.
- W2364832018 hasPublicationYear "2007" @default.
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