FLUCTUATION OF SIZE-FRACTIONATED ALKALINE PHOSPHATASE AFTER BLOOM DISAPPEARANCE IN TWO SHALLOW PONDS

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	FLUCTUATION OF SIZE-FRACTIONATED ALKALINE PHOSPHATASE AFTER BLOOM DISAPPEARANCE IN TWO SHALLOW PONDS
	Song Chunlei; Cao Xiuyun; Zhou Yiyong
刊名	FRESENIUS ENVIRONMENTAL BULLETIN
	2009
卷号	18 期号:6 页码:982-988
关键词	Size-fractionated alkaline phosphatase algal derived detritus phosphorus bloom
ISSN号	1018-4619
通讯作者	Cao, XY, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
中文摘要	The temporal and vertical fluctuations of size fractionated alkaline phosphatase activity (APA) and kinetics parameters as well as orthophosphate (o-P) and chlorophyll concentrations were investigated after bloom disappearance in two shallow ponds A and B from 27 October 2001 to 15 April 2002. Pond A (Microcystis) bloomed seriously but pond B did not. The data of o-P and chlorophyll suggested that phosphorus was the principal limiting nutrimental element and its vertical flux should be regarded as an important driving factor for algal growth. In pond A, the accumulation of algae-derived detritus after bloom disappearance in overlying water stimulated excretion of algal fraction APA, mainly produced by attached bacteria responsible for detritus decomposition, whereas bacterial fraction APA preferred to function in surface water. Interestingly, completely contrary phenomena were observed in pond B. In season, even though no obvious difference for size-fractionated APA in both ponds, the total APA in pond A peaked earlier showing higher activity and efficiency (low K-m and high V-max values) as a result of algal-derived detritus input. In summary, it is suggested that the excretion of alkaline phosphatase with strongly catalyzing efficiency and high activity should be taken as important contributor to algal-derived detritus decomposition, further fueling nutrient recycle and accelerating algal development next year. Furthermore, some inhibitors and surfactants were testified to be good tools to identify the origin of dissolved alkaline phosphatase.
英文摘要	The temporal and vertical fluctuations of size fractionated alkaline phosphatase activity (APA) and kinetics parameters as well as orthophosphate (o-P) and chlorophyll concentrations were investigated after bloom disappearance in two shallow ponds A and B from 27 October 2001 to 15 April 2002. Pond A (Microcystis) bloomed seriously but pond B did not. The data of o-P and chlorophyll suggested that phosphorus was the principal limiting nutrimental element and its vertical flux should be regarded as an important driving factor for algal growth. In pond A, the accumulation of algae-derived detritus after bloom disappearance in overlying water stimulated excretion of algal fraction APA, mainly produced by attached bacteria responsible for detritus decomposition, whereas bacterial fraction APA preferred to function in surface water. Interestingly, completely contrary phenomena were observed in pond B. In season, even though no obvious difference for size-fractionated APA in both ponds, the total APA in pond A peaked earlier showing higher activity and efficiency (low K(m) and high V(max) values) as a result of algal-derived detritus input. In summary, it is suggested that the excretion of alkaline phosphatase with strongly catalyzing efficiency and high activity should be taken as important contributor to algal-derived detritus decomposition, further fueling nutrient recycle and accelerating algal development next year. Furthermore, some inhibitors and surfactants were testified to be good tools to identify the origin of dissolved alkaline phosphatase.
学科主题	Environmental Sciences
WOS标题词	Science & Technology ; Life Sciences & Biomedicine
类目[WOS]	Environmental Sciences
研究领域[WOS]	Environmental Sciences & Ecology
关键词[WOS]	EUTROPHIC LAKE ; PHOSPHORUS AVAILABILITY ; CYANOBACTERIAL BLOOM ; ORGANIC PHOSPHORUS ; HUMIC LAKE ; DETRITUS ; BACTERIA ; PHYTOPLANKTON ; DECOMPOSITION ; DYNAMICS
收录类别	SCI
资助信息	Chinese Academy of Sciences [KZCX2-YW426, KZCXI-YW-14-1]; National Science Foundation of China [40730528, 30600088]; State Key Laboratory of Freshwater Ecology and Biotechnology [20081713012]
语种	英语
WOS记录号	WOS:000267869500011
公开日期	2010-10-13
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/152342/7658]
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	Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Song Chunlei,Cao Xiuyun,Zhou Yiyong. FLUCTUATION OF SIZE-FRACTIONATED ALKALINE PHOSPHATASE AFTER BLOOM DISAPPEARANCE IN TWO SHALLOW PONDS[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2009,18(6):982-988.
APA	Song Chunlei,Cao Xiuyun,&Zhou Yiyong.(2009).FLUCTUATION OF SIZE-FRACTIONATED ALKALINE PHOSPHATASE AFTER BLOOM DISAPPEARANCE IN TWO SHALLOW PONDS.FRESENIUS ENVIRONMENTAL BULLETIN,18(6),982-988.
MLA	Song Chunlei,et al."FLUCTUATION OF SIZE-FRACTIONATED ALKALINE PHOSPHATASE AFTER BLOOM DISAPPEARANCE IN TWO SHALLOW PONDS".FRESENIUS ENVIRONMENTAL BULLETIN 18.6(2009):982-988.