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学科主题: Environmental Sciences & Ecology
题名: Phytoplankton development and ecological status during a cyanobacterial bloom in a tributary bay of the Three Gorges Reservoir, China
作者: Wang, Lan1, 2; Cai, Qinghua1; Tan, Lu1, 2; Kong, Linghui1, 2
通讯作者: Cai, QH (reprint author), Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China ; qhcai@ihb.ac.cn
关键词: Cyanobacterial bloom ; Phytoplankton functional groups ; Longitudinal pattern ; Ecological status ; Q index ; Tributary bay
刊名: SCIENCE OF THE TOTAL ENVIRONMENT
发表日期: 2011-09-01
DOI: 10.1016/j.scitotenv.2011.06.041
卷: 409, 期:19, 页:3820-3828
收录类别: SCI
文章类型: Article
部门归属: [Wang, Lan; Cai, Qinghua; Tan, Lu; Kong, Linghui] Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Wang, Lan; Tan, Lu; Kong, Linghui] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: CAS[KZCX2-YW-427]; National Natural Science Foundation of China[40671197]; State Key Laboratory FEBL[2008FBZ02]; Hubei Key Laboratory of Wetland Evolution & Ecological Restoration
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
摘要: Reservoirs can provide suitable conditions for cyanobacterial bloom development, which may impact on water quality and biological communities. Weekly surveys in a cyanobacterial bloom process were carried out in the mainstream and Xiangxi Bay of the Three Gorges Reservoir (China), from June 6 to July 18 in 2008. By application of the phytoplankton functional group approach, the spatiotemporal pattern, impact factors, and the ecological status based on Q index (assemblage index) were analyzed. The depth of euphotic layer was apparently the key factor driving the phytoplankton functional group variations. Longitudinal patterns of phytoplankton distribution were detected during this bloom: in the beginning phase, groups D (mainly Stephanodiscus hantzschii) and B (Cyclotella stelligera) dominated in the mainstream of the Three Gorges Reservoir and the mouth area of Xiangxi Bay, group Y (Cryptomonas species) dominated in the upper area, while groups J (mainly Pediastrum duplex), F (mainly Sphaerocystis schroeteri) and G (Pandorina morum and Eudorina elegans) were important in other areas; in the mid phase, group M became absolutely dominant in the whole region; and in the ending phase, besides groups M and Y, groups X2 (Chroomonas acuta, Pyramimonas nanella, etc.) and Lo (Ceratium hirundinella) became more important in the lower and upper area respectively. Generally the ecological status was bad, temporally varied with the bloom process. No spatial difference of ecological status was found in the mainstream, while longitudinal patterns in Xiangxi Bay were detected for different phases: firstly a few sites had relatively better status than the others, then nearly all the sites were in the bad condition, and at last the status in the downstream was better than that in the upstream. The longitudinal patterns of ecological status were related to phytoplankton distribution, disturbed by jacking from the downstream and flood from the upstream of Xiangxi Bay. (C) 2011 Elsevier B.V. All rights reserved.
英文摘要: Reservoirs can provide suitable conditions for cyanobacterial bloom development, which may impact on water quality and biological communities. Weekly surveys in a cyanobacterial bloom process were carried out in the mainstream and Xiangxi Bay of the Three Gorges Reservoir (China), from June 6 to July 18 in 2008. By application of the phytoplankton functional group approach, the spatiotemporal pattern, impact factors, and the ecological status based on Q index (assemblage index) were analyzed. The depth of euphotic layer was apparently the key factor driving the phytoplankton functional group variations. Longitudinal patterns of phytoplankton distribution were detected during this bloom: in the beginning phase, groups D (mainly Stephanodiscus hantzschii) and B (Cyclotella stelligera) dominated in the mainstream of the Three Gorges Reservoir and the mouth area of Xiangxi Bay, group Y (Cryptomonas species) dominated in the upper area, while groups J (mainly Pediastrum duplex), F (mainly Sphaerocystis schroeteri) and G (Pandorina morum and Eudorina elegans) were important in other areas; in the mid phase, group M became absolutely dominant in the whole region; and in the ending phase, besides groups M and Y, groups X2 (Chroomonas acuta, Pyramimonas nanella, etc.) and Lo (Ceratium hirundinella) became more important in the lower and upper area respectively. Generally the ecological status was bad, temporally varied with the bloom process. No spatial difference of ecological status was found in the mainstream, while longitudinal patterns in Xiangxi Bay were detected for different phases: firstly a few sites had relatively better status than the others, then nearly all the sites were in the bad condition, and at last the status in the downstream was better than that in the upstream. The longitudinal patterns of ecological status were related to phytoplankton distribution, disturbed by jacking from the downstream and flood from the upstream of Xiangxi Bay. (C) 2011 Elsevier B.V. All rights reserved.
关键词[WOS]: XIANGXI BAY ; MICROCYSTIS BLOOM ; FUNCTIONAL-GROUPS ; NUTRIENT LIMITATION ; TEMPORAL VARIATION ; ASSEMBLAGE INDEX ; BARRA BONITA ; FRESH-WATER ; SAO-PAULO ; BRAZIL
语种: 英语
WOS记录号: WOS:000295233900027
ISSN号: 0048-9697
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16427
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, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Wang, Lan; Cai, Qinghua; Tan, Lu; Kong, Linghui.Phytoplankton development and ecological status during a cyanobacterial bloom in a tributary bay of the Three Gorges Reservoir, China,SCIENCE OF THE TOTAL ENVIRONMENT,2011,409(19):3820-3828
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