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学科主题: Environmental Sciences; Multidisciplinary Sciences
题名: Factors Affecting Temporal and Spatial Variations of Microcystins in Gonghu Bay of Lake Taihu, with Potential Risk of Microcystin Contamination to Human Health
作者: Wang, Qing1; Niu, Yuan1; Xie, Ping1; Chen, Jun1; Ma, Zhimei1; Tao, Min1; Qi, Min1; Wu, Laiyan1; Guo, Longgen1
通讯作者: Xie, P, Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan, Peoples R China
关键词: microcystins ; Gonghu Bay ; seasonal variation ; Taihu Lake
刊名: THESCIENTIFICWORLDJOURNAL
发表日期: 2010
DOI: 10.1100/tsw.2010.172
卷: 10, 页:1795-1809
收录类别: SCI
文章类型: Article
部门归属: [Wang, Qing; Niu, Yuan; Xie, Ping; Chen, Jun; Ma, Zhimei; Tao, Min; Qi, Min; Wu, Laiyan; Guo, Longgen] Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: Ministry of Science and Technology of the People's Republic of China [2007BAC26B02]; Chinese Academy of Sciences [KZCX1-YW-14-6-1]
类目[WOS]: Environmental Sciences ; Multidisciplinary Sciences
研究领域[WOS]: Environmental Sciences & Ecology ; Science & Technology - Other Topics
摘要: A field survey of the seasonal variation of microcystin (MC) concentration was performed in Gonghu Bay (a total of 15 sampling sites) of Lake Taihu from January to December 2008. Microcystis spp. biomass and intra-/extracellular MCs were significantly correlated with water temperature, suggesting the importance of temperature in cyanobacterial blooming in the lake. Higher MC concentration was found in summer and autumn, and peaks of Microcystis biomass and intra-/extracellular MC concentrations were all present in October. Spatially, risk of MCs was higher in littoral zones than in the pelagic area. There were significant correlations between N or P concentrations, and Microcystis biomass or MC content, suggesting that N and P levels affected MC production through influencing Microcystis biomass. Intra-/extracellular MCs and Microcystis biomass had negative exponential relationships with TN:TP, and the maximum values all occurred when TN:TP was <25. Multivariate analyses by PCCA indicated that intra- and extracellular MC concentrations had better correlations with biological factors (such as Microcystis biomass and chl-a) than with physicochemical factors. The maximum MC concentration reached up to 17 mu g/L MC-LReq, considerably higher than the drinking water safety standard (1 mu g/L) recommended by the WHO. So it is necessary to take measures to reduce the exposure risk of cyanobacterial toxins to human beings.
英文摘要: A field survey of the seasonal variation of microcystin (MC) concentration was performed in Gonghu Bay (a total of 15 sampling sites) of Lake Taihu from January to December 2008. Microcystis spp. biomass and intra-/extracellular MCs were significantly correlated with water temperature, suggesting the importance of temperature in cyanobacterial blooming in the lake. Higher MC concentration was found in summer and autumn, and peaks of Microcystis biomass and intra-/extracellular MC concentrations were all present in October. Spatially, risk of MCs was higher in littoral zones than in the pelagic area. There were significant correlations between N or P concentrations, and Microcystis biomass or MC content, suggesting that N and P levels affected MC production through influencing Microcystis biomass. Intra-/extracellular MCs and Microcystis biomass had negative exponential relationships with TN:TP, and the maximum values all occurred when TN:TP was <25. Multivariate analyses by PCCA indicated that intra- and extracellular MC concentrations had better correlations with biological factors (such as Microcystis biomass and chl-a) than with physicochemical factors. The maximum MC concentration reached up to 17 mu g/L MC-LReq, considerably higher than the drinking water safety standard (1 mu g/L) recommended by the WHO. So it is necessary to take measures to reduce the exposure risk of cyanobacterial toxins to human beings.
关键词[WOS]: TN-TP RATIO ; ENVIRONMENTAL-FACTORS ; SEASONAL DYNAMICS ; PLANKTOTHRIX SPP. ; CHINESE LAKE ; MEILIANG BAY ; GROWTH-RATE ; WATER ; CYANOBACTERIA ; AERUGINOSA
语种: 英语
WOS记录号: WOS:000282000500001
ISSN号: 1537-744X
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/13514
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, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan, Peoples R China

Recommended Citation:
Wang, Qing; Niu, Yuan; Xie, Ping; Chen, Jun; Ma, Zhimei; Tao, Min; Qi, Min; Wu, Laiyan; Guo, Longgen.Factors Affecting Temporal and Spatial Variations of Microcystins in Gonghu Bay of Lake Taihu, with Potential Risk of Microcystin Contamination to Human Health,THESCIENTIFICWORLDJOURNAL,2010,10():1795-1809
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