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题名: Seasonal dynamics of water bloom-forming Microcystis morphospecies and the associated extracellular microcystin concentrations in large, shallow, eutrophic Dianchi Lake
作者: Wu, Yanlong1, 3; Li, Lin1, 2; Gan, Nanqin1, 2; Zheng, Lingling1, 2; Ma, Haiyan1, 2; Shan, Kun1, 3; Liu, Jin1, 2; Xiao, Bangding1, 2; Song, Lirong1, 2
关键词: Cyanobacterial blooms ; Morphospecies ; Microcystis succession ; Toxicity ; Dianchi Lake
刊名: JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
发表日期: 2014-09-01
DOI: 10.1016/j.jes.2014.06.031
卷: 26, 期:9, 页:1921-1929
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: The increasing occurrence of Microcystis blooms is of great concern to public health and ecosystem due to the potential hepatotoxic microcystins (MCs) produced by these colonial cyanobacteria. In order to interpret the relationships between variations of Microcystis morphospecies and extracellular MC concentrations, the seasonal dynamics of phytoplankton community composition, MC concentrations, and environmental parameters were monitored monthly from August, 2009 to July, 2010. The results indicated that Microcystis dominated total phytoplankton abundance from May to December (96%-99% of total biovolume), with toxic Microcystis viridis and non-toxic Microcystis wesenbergii dominating after July (constituting 65%-95% of the Microcystis population), followed by M. viridis as the sole dominant species from November to January (49%-93%). Correlation analysis revealed that water temperature and nutrient were the most important variables accounting for the occurrence of M. wesenbergii, while the dominance of M. viridis was related with nitrite and nitrate. The relatively low content of MCs was explained by the association with a large proportion of M. viridis and M. wesenbergii, small colony size of Microcystis populations, and low water temperature, pH and dissolved oxygen. The extracellular MC (mean of 0.5 +/- 0.2 mu g/L) of water samples analyzed by enzyme-linked immunosorbent assay (ELISA) demonstrated the low concentrations of MC in Dianchi Lake which implied the low potential risk for human health in the basin. The survey provides the first whole lake study of the occurrence and seasonal variability of Microcystis population and extracellular MCs that are of particular interest for water quality monitoring and management. (C) 2014 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
关键词[WOS]: HARMFUL CYANOBACTERIA ; ENVIRONMENTAL-FACTORS ; CLIMATE-CHANGE ; POPULATION ; RESERVOIR ; CHINA ; WESENBERGII ; AERUGINOSA ; DIVERSITY ; COLONIES
语种: 英语
WOS记录号: WOS:000341739600021
ISSN号: 1001-0742
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/20398
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

Recommended Citation:
Wu, Yanlong; Li, Lin; Gan, Nanqin; Zheng, Lingling; Ma, Haiyan; Shan, Kun; Liu, Jin; Xiao, Bangding; Song, Lirong.Seasonal dynamics of water bloom-forming Microcystis morphospecies and the associated extracellular microcystin concentrations in large, shallow, eutrophic Dianchi Lake,JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2014,():
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文件名: Seasonal dynamics of water bloom-forming Microcystis morphospecies and the associated extracellular microcystin concentrations in large, shallow, eutrophic Dianchi Lake.pdf
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