The low TN : TP ratio, a cause or a result of Microcystis blooms?

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	The low TN : TP ratio, a cause or a result of Microcystis blooms?
	Xie, LQ; Xie, P; Li, SX; Tang, HJ; Liu, H
刊名	WATER RESEARCH
	2003-05-01
卷号	37 期号:9 页码:2073-2080
关键词	TN : TP ratios Microcystis blooms enclosures water and sediments P-reduction
ISSN号	0043-1354
通讯作者	Xie, P, Wuhan Univ, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol,Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
中文摘要	An enclosure experiment in the shallow, subtropical Lake Donghu, China, was performed in the summer of 2001 to examine the effect of TN:TP (total phosphorus) ratios and P-reduction on the occurrence of Microcysitis blooms. The treatments were performed with enough amounts of N but with different amounts of P in the water column and sediment. Microcystis blooms occurred in the enclosures either with an initial TN:TP <29 or TN:TP >29 where the nutrients (N, P) were high enough. Microcysitis blooms never occurred in the treatments with low P concentration in spite of the presence of sufficient N. The P-rich sediments served as an important source for the P supply in the water column, and such a process was activated greatly by the outburst of Microcystis blooms which pumped up selectively P from the sediments and thus decreased the TN:TP ratios. Therefore, the low TN:TP ratio is not a cause but rather a result of Microcystis blooms. (C) 2002 Elsevier Science Ltd. All rights reserved.
英文摘要	An enclosure experiment in the shallow, subtropical Lake Donghu, China, was performed in the summer of 2001 to examine the effect of TN:TP (total phosphorus) ratios and P-reduction on the occurrence of Microcysitis blooms. The treatments were performed with enough amounts of N but with different amounts of P in the water column and sediment. Microcystis blooms occurred in the enclosures either with an initial TN:TP <29 or TN:TP >29 where the nutrients (N, P) were high enough. Microcysitis blooms never occurred in the treatments with low P concentration in spite of the presence of sufficient N. The P-rich sediments served as an important source for the P supply in the water column, and such a process was activated greatly by the outburst of Microcystis blooms which pumped up selectively P from the sediments and thus decreased the TN:TP ratios. Therefore, the low TN:TP ratio is not a cause but rather a result of Microcystis blooms. (C) 2002 Elsevier Science Ltd. All rights reserved.
学科主题	Engineering ; Environmental; Environmental Sciences; Water Resources
WOS标题词	Science & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
类目[WOS]	Engineering, Environmental ; Environmental Sciences ; Water Resources
研究领域[WOS]	Engineering ; Environmental Sciences & Ecology ; Water Resources
关键词[WOS]	SUBTROPICAL CHINESE LAKE ; BLUE-GREEN-ALGAE ; TOTAL PHOSPHORUS ; SUPPLY RATIOS ; WATER-BLOOMS ; NITROGEN ; PHYTOPLANKTON ; SHALLOW ; AERUGINOSA ; DYNAMICS
收录类别	SCI
语种	英语
WOS记录号	WOS:000182421600011
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/9704]
专题	水生生物研究所_中科院水生所知识产出（2009年前）_期刊论文
作者单位	Wuhan Univ, Chinese Acad Sci, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol,Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Xie, LQ,Xie, P,Li, SX,et al. The low TN : TP ratio, a cause or a result of Microcystis blooms?[J]. WATER RESEARCH,2003,37(9):2073-2080.
APA	Xie, LQ,Xie, P,Li, SX,Tang, HJ,&Liu, H.(2003).The low TN : TP ratio, a cause or a result of Microcystis blooms?.WATER RESEARCH,37(9),2073-2080.
MLA	Xie, LQ,et al."The low TN : TP ratio, a cause or a result of Microcystis blooms?".WATER RESEARCH 37.9(2003):2073-2080.