Contributions of phosphatase and microbial activity to internal phosphorus loading and their relation to lake eutrophication

CORC > 水生生物研究所 > 中科院水生所知识产出（2009年前） > 期刊论文

	Contributions of phosphatase and microbial activity to internal phosphorus loading and their relation to lake eutrophication
	Song Chunlei ; Cao Xiuyun ; Li Jianqiu ; Li Qingman ; Chen Guoyuan ; Zhou Yiyong
刊名	SCIENCE IN CHINA SERIES D-EARTH SCIENCES
	2006-04-01
卷号	49 页码:102-113
关键词	dissolved phosphatase reverse micelle internal loading phosphorus form of sediment microbiology eutrophication Microcystis bloom
ISSN号	1006-9313
通讯作者	Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
中文摘要	Phosphatase may accelerate the process of lake eutrophication through improving phosphorus bioavailability. This mechanism was studied in three Chinese eutrophic shallow lakes (Lake Taihu, Lake Longyang,and Lake Lianhua). Phosphatase activity was related to the concentration of soluble reactive phosphorus (SRP) and chlorophyll a. Stability of dissolved phosphatase in reverse micelles may be attributed to molecular size, conformation and active residues of the enzyme. At the site with Microcystis bloomed in Lake Taihu, dissolved phosphatase activity was higher and more stable in micelles, SRP concentrations were lower in interstitial water, the contents of different forms of phosphorus and the amounts of aerobic bacteria were lower while respiration efficiency was higher in sediments. Phosphobacteria, both inorganic and organic and other microorganisms were abundant in surface water but rare in sediments. Therefore, internal phosphorus may substantially flux into water column by enzymatic hydrolysis and anaerobic release, together with mobility of bacteria, thereby initiating the bloom. In short, biological mechanism may act in concert with physical and chemical factors to drive the internal phosphorus release and accelerate lake eutrophication.
英文摘要	Phosphatase may accelerate the process of lake eutrophication through improving phosphorus bioavailability. This mechanism was studied in three Chinese eutrophic shallow lakes (Lake Taihu, Lake Longyang,and Lake Lianhua). Phosphatase activity was related to the concentration of soluble reactive phosphorus (SRP) and chlorophyll a. Stability of dissolved phosphatase in reverse micelles may be attributed to molecular size, conformation and active residues of the enzyme. At the site with Microcystis bloomed in Lake Taihu, dissolved phosphatase activity was higher and more stable in micelles, SRP concentrations were lower in interstitial water, the contents of different forms of phosphorus and the amounts of aerobic bacteria were lower while respiration efficiency was higher in sediments. Phosphobacteria, both inorganic and organic and other microorganisms were abundant in surface water but rare in sediments. Therefore, internal phosphorus may substantially flux into water column by enzymatic hydrolysis and anaerobic release, together with mobility of bacteria, thereby initiating the bloom. In short, biological mechanism may act in concert with physical and chemical factors to drive the internal phosphorus release and accelerate lake eutrophication.
学科主题	Geosciences, Multidisciplinary
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Geosciences, Multidisciplinary
研究领域[WOS]	Geology
关键词[WOS]	ALKALINE-PHOSPHATASE ; REVERSE MICELLES ; SIZE-FRACTIONATION ; ORGANIC-SOLVENTS ; P-RELEASE ; WATER ; SEDIMENTS ; ENZYMES ; PHYTOPLANKTON ; AVAILABILITY
收录类别	SCI
语种	英语
WOS记录号	WOS:000238958400010
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/8916]
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	1.Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Song Chunlei,Cao Xiuyun,Li Jianqiu,et al. Contributions of phosphatase and microbial activity to internal phosphorus loading and their relation to lake eutrophication[J]. SCIENCE IN CHINA SERIES D-EARTH SCIENCES,2006,49:102-113.
APA	Song Chunlei,Cao Xiuyun,Li Jianqiu,Li Qingman,Chen Guoyuan,&Zhou Yiyong.(2006).Contributions of phosphatase and microbial activity to internal phosphorus loading and their relation to lake eutrophication.SCIENCE IN CHINA SERIES D-EARTH SCIENCES,49,102-113.
MLA	Song Chunlei,et al."Contributions of phosphatase and microbial activity to internal phosphorus loading and their relation to lake eutrophication".SCIENCE IN CHINA SERIES D-EARTH SCIENCES 49(2006):102-113.