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题名: Use of a Generalized Additive Model to Investigate Key Abiotic Factors Affecting Microcystin Cellular Quotas in Heavy Bloom Areas of Lake Taihu
作者: Tao, Min1; Xie, Ping1; Chen, Jun1; Qin, Boqiang2; Zhang, Dawen1; Niu, Yuan1; Zhang, Meng1; Wang, Qing1; Wu, Laiyan1
通讯作者: Tao, M (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan, Peoples R China.
关键词: CYANOBACTERIUM MICROCYSTIS ; TOXIC CYANOBACTERIA ; INORGANIC CARBON ; MEILIANG BAY ; HEPATOTOXIN PRODUCTION ; ENVIRONMENTAL-FACTORS ; AERUGINOSA PCC7806 ; GROWTH ; CHINA ; LR
刊名: PLOS ONE
发表日期: 2012-02-23
DOI: 10.1371/journal.pone.0032020
卷: 7, 期:2, 页:e32020
收录类别: SCI
文章类型: Article
部门归属: [Tao, Min; Xie, Ping; Chen, Jun; Zhang, Dawen; Niu, Yuan; Zhang, Meng; Wang, Qing; Wu, Laiyan] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan, Peoples R China; [Qin, Boqiang] Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing, Peoples R China
WOS标题词: Science & Technology
资助者: National Basic Research Program of China (973 Program)[2008CB418101]; Chinese Academy of Sciences[KZCX1-YW-14-6-1]; State Key Laboratory of Freshwater Ecology and Biotechnology[2011FBZ07]
类目[WOS]: Multidisciplinary Sciences
研究领域[WOS]: Science & Technology - Other Topics
摘要: Lake Taihu is the third largest freshwater lake in China and is suffering from serious cyanobacterial blooms with the associated drinking water contamination by microcystin (MC) for millions of citizens. So far, most studies on MCs have been limited to two small bays, while systematic research on the whole lake is lacking. To explain the variations in MC concentrations during cyanobacterial bloom, a large-scale survey at 30 sites across the lake was conducted monthly in 2008. The health risks of MC exposure were high, especially in the northern area. Both Microcystis abundance and MC cellular quotas presented positive correlations with MC concentration in the bloom seasons, suggesting that the toxic risks during Microcystis proliferations were affected by variations in both Microcystis density and MC production per Microcystis cell. Use of a powerful predictive modeling tool named generalized additive model (GAM) helped visualize significant effects of abiotic factors related to carbon fixation and proliferation of Microcystis (conductivity, dissolved inorganic carbon (DIC), water temperature and pH) on MC cellular quotas from recruitment period of Microcystis to the bloom seasons, suggesting the possible use of these factors, in addition to Microcystis abundance, as warning signs to predict toxic events in the future. The interesting relationship between macrophytes and MC cellular quotas of Microcystis (i.e., high MC cellular quotas in the presence of macrophytes) needs further investigation.
英文摘要: Lake Taihu is the third largest freshwater lake in China and is suffering from serious cyanobacterial blooms with the associated drinking water contamination by microcystin (MC) for millions of citizens. So far, most studies on MCs have been limited to two small bays, while systematic research on the whole lake is lacking. To explain the variations in MC concentrations during cyanobacterial bloom, a large-scale survey at 30 sites across the lake was conducted monthly in 2008. The health risks of MC exposure were high, especially in the northern area. Both Microcystis abundance and MC cellular quotas presented positive correlations with MC concentration in the bloom seasons, suggesting that the toxic risks during Microcystis proliferations were affected by variations in both Microcystis density and MC production per Microcystis cell. Use of a powerful predictive modeling tool named generalized additive model (GAM) helped visualize significant effects of abiotic factors related to carbon fixation and proliferation of Microcystis (conductivity, dissolved inorganic carbon (DIC), water temperature and pH) on MC cellular quotas from recruitment period of Microcystis to the bloom seasons, suggesting the possible use of these factors, in addition to Microcystis abundance, as warning signs to predict toxic events in the future. The interesting relationship between macrophytes and MC cellular quotas of Microcystis (i.e., high MC cellular quotas in the presence of macrophytes) needs further investigation.
关键词[WOS]: CYANOBACTERIUM MICROCYSTIS ; TOXIC CYANOBACTERIA ; INORGANIC CARBON ; MEILIANG BAY ; HEPATOTOXIN PRODUCTION ; ENVIRONMENTAL-FACTORS ; AERUGINOSA PCC7806 ; GROWTH ; CHINA ; LR
语种: 英语
WOS记录号: WOS:000302916100045
ISSN号: 1932-6203
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16867
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan, Peoples R China
2.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing, Peoples R China

Recommended Citation:
Tao, Min; Xie, Ping; Chen, Jun; Qin, Boqiang; Zhang, Dawen; Niu, Yuan; Zhang, Meng; Wang, Qing; Wu, Laiyan.Use of a Generalized Additive Model to Investigate Key Abiotic Factors Affecting Microcystin Cellular Quotas in Heavy Bloom Areas of Lake Taihu,PLOS ONE,2012,7(2):e32020
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