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学科主题: Environmental Sciences
题名: Enhancement of dissolved phosphorus release from sediment to lake water by Microcystis blooms - an enclosure experiment in a hyper-eutrophic, subtropical Chinese lake
作者: Xie, LQ ; Xie, P ; Tang, HJ
通讯作者: Xie, P, Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China
关键词: Microcystis blooms ; P release ; sediments ; high pH
刊名: ENVIRONMENTAL POLLUTION
发表日期: 2003
卷: 122, 期:3, 页:391-399
收录类别: SCI
部门归属: Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China
摘要: To clarify the possible influence of Microcystis blooms on the exchange of phosphorus (P) between sediment and lake water, an enclosure experiment was conducted in the hypereutrophic subtropical Lake Donghu during July-September 2000. Eight enclosures were used: six received sediment while two were sediment-free. In mid-August, Microcystis blooms developed in all the enclosures. There was a persistent coincidence between the occurrence of Microcystis blooms and the increase of both total P (TP) and soluble reactive P (SRP) concentrations in the water of the enclosures with sediments. In sediment-free enclosures, TP and SRP concentrations remained rather stable throughout the experiment, in spite of the appearance of Microcystis blooms. The results indicate that Microcystis blooms induced massive release of P from the sediment, perhaps mediated by high pH caused by intense algal photosynthesis, and/or depressed concentrations of nitrate nitrogen (NO3-N). (C) 2002 Elsevier Science Ltd. All rights reserved.
WOS记录号: WOS:000181539500008
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9728
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Recommended Citation:
Xie, LQ; Xie, P; Tang, HJ.Enhancement of dissolved phosphorus release from sediment to lake water by Microcystis blooms - an enclosure experiment in a hyper-eutrophic, subtropical Chinese lake,ENVIRONMENTAL POLLUTION,2003,122(3):391-399
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