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Different competitive outcomes among four species of cladocerans under different alga combinations of colonial Microcystis spp. and green alga Scenedesmus obliquus
Chen, Feizhou; Xie, Ping; Qin, Boqiang; Chen, FZ, Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Wuhan 430072, Peoples R China
2007
Conference NameInternational Symposium on the Eutrophication Process and Control in Large Shallow Lakes
Source PublicationHYDROBIOLOGIA
Pages209-215
Conference DateAPR 22-26, 2005
Conference PlaceNanjing, PEOPLES R CHINA
DepartmentChinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Wuhan 430072, Peoples R China; Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China
AbstractCyanobacteria blooms (especially Microcystis spp.) are thought to alter dominance of large-sized daphnids into small-sized metazoan zooplankton. However, several field investigations show different phenomena. Laboratory experiments were conducted based on the hypothesis that different Microcystis spp. concentrations would influence competitive outcomes using two algal combinations of different concentrations and four species of cladocerans. In the algal combination of 50 mg l(-1)colonial Microcystis spp. + 1 mg l(-1) Scenedesmus obliquus (fresh weight), Daphnia carinata was absent during the experiment in competition with other cladocerans. Decreasing colonial Microcystis spp. concentration (10 mg l(-1)) resulted in a shift from dominance by small-sized cladocerans to dominance by D. carinata. No significant effects of different concentrations of colonial Microcystis spp. on competitive outcomes were shown among three small-sized cladocerans. These results support the idea that cyanobacteria concentration affects the dominance status of large-bodied daphnid.
KeywordCladoceran Daphnia Competition Microcystis Spp
Indexed BySCI
Language英语
WOS IDWOS:000244992800023
Citation statistics
Document Type会议论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/11775
Collection会议论文
Corresponding AuthorChen, FZ, Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Chen, Feizhou,Xie, Ping,Qin, Boqiang,et al. Different competitive outcomes among four species of cladocerans under different alga combinations of colonial Microcystis spp. and green alga Scenedesmus obliquus[C],2007:209-215.
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