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Use of a Generalized Additive Model to Investigate Key Abiotic Factors Affecting Microcystin Cellular Quotas in Heavy Bloom Areas of Lake Taihu
Tao, Min1; Xie, Ping1; Chen, Jun1; Qin, Boqiang2; Zhang, Dawen1; Niu, Yuan1; Zhang, Meng1; Wang, Qing1; Wu, Laiyan1; 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.
2012-02-23
Source PublicationPLOS ONE
ISSN1932-6203
Volume7Issue:2Pages:e32020
AbstractLake 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.; 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.
SubtypeArticle
KeywordCyanobacterium Microcystis Toxic Cyanobacteria Inorganic Carbon Meiliang Bay Hepatotoxin Production Environmental-factors Aeruginosa Pcc7806 Growth China Lr
Department[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
DOI10.1371/journal.pone.0032020
WOS HeadingsScience & Technology
Funding OrganizationNational 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] ; 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] ; 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] ; 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]
Indexed BySCI
Language英语
WOS Research AreaScience & Technology - Other Topics
WOS SubjectMultidisciplinary Sciences
WOS IDWOS:000302916100045
WOS KeywordCYANOBACTERIUM MICROCYSTIS ; TOXIC CYANOBACTERIA ; INORGANIC CARBON ; MEILIANG BAY ; HEPATOTOXIN PRODUCTION ; ENVIRONMENTAL-FACTORS ; AERUGINOSA PCC7806 ; GROWTH ; CHINA ; LR
Funding OrganizationNational 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] ; 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] ; 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] ; 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]
Citation statistics
Cited Times:34[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16867
Collection淡水生态学研究中心_期刊论文
Corresponding AuthorTao, M (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan, Peoples R China.
Affiliation1.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
GB/T 7714
Tao, Min,Xie, Ping,Chen, Jun,et al. Use of a Generalized Additive Model to Investigate Key Abiotic Factors Affecting Microcystin Cellular Quotas in Heavy Bloom Areas of Lake Taihu[J]. PLOS ONE,2012,7(2):e32020.
APA Tao, Min.,Xie, Ping.,Chen, Jun.,Qin, Boqiang.,Zhang, Dawen.,...&Tao, M .(2012).Use of a Generalized Additive Model to Investigate Key Abiotic Factors Affecting Microcystin Cellular Quotas in Heavy Bloom Areas of Lake Taihu.PLOS ONE,7(2),e32020.
MLA Tao, Min,et al."Use of a Generalized Additive Model to Investigate Key Abiotic Factors Affecting Microcystin Cellular Quotas in Heavy Bloom Areas of Lake Taihu".PLOS ONE 7.2(2012):e32020.
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