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题名: DYNAMICS OF ALKALINE PHOSPHATASE ACTIVITY DURING THE PERIOD OF CYANOBACTERIAL BLOOM IN A TRIBUTARY OF THE THREE GORGES RESERVOIR
作者: Yuan, Yijun1, 2; Bi, Yonghong1; Hu, Zhengyu1
关键词: alkaline phosphatase activity ; cyanobacterial bloom ; phytoplankton ; soluble reactive phosphorus
刊名: FRESENIUS ENVIRONMENTAL BULLETIN
发表日期: 2016
卷: 25, 期:11, 页:4900-4907
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: In order to illuminate the characteristics of excreting alkaline phosphatase (AP) by cyanobacteria and verify the feasibility of alkaline phosphatase activity (APA) as the indicator of soluble reactive phosphorus (SRP) deficiency, daily investigation in situ was conducted during a complete process of cyanobacterial bloom in the Xiaojiang River, a tributary of Three Gorges Reservoir. Changes of phytoplankton communities, SRP, chlorophyll a (Chl a), physic-chemical parameters and APA were screened. The complete process of cyanobacterial bloom could be divided into two stages. In the bloom stage, Microcystis sp. dominated the phytoplankton communities, water temperature (WT), dissolved oxygen (DO) and the total APA (APA(T)) kept a high level and Chl a displayed an ascending trend and reached the peak. APA(>3.0 mu m) occupied the main proportion of the total APA (APA(T)) and showed the significant positive relationship with SRP (p<0.05). In the bloom decaying stage, the predominant species was Anabaena sp., the values of WT, DO, Chl a, APA(T) and APA(>3.0 mu m) declined and lower than that in the bloom stage; APA(>3.0 mu m) still occupied the main proportion of APA(T) and showed the significant negative relationship with SRP (p<0.05). It was proved that AP was mainly excreted by phytoplankton and there were at least two different AP excreting mechanisms in cyanobacteria, APA was not reasonable treated as the indicator of SRP deficiency when Microcystis sp. dominated the phytoplankton communities.
关键词[WOS]: MICROCYSTIS-AERUGINOSA ; PHOSPHORUS RELEASE ; XIAOJIANG RIVER ; PHYTOPLANKTON ; EUTROPHICATION ; LAKE ; NITROGEN ; INDICATORS ; DEFICIENCY ; NUTRIENT
语种: 英语
项目资助者: National Natural Science Foundation of China(31123001) ; Science and Technology Research Project of China Three Gorges Corporation(CT-12-08-01)
WOS记录号: WOS:000390641900051
ISSN号: 1018-4619
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/28753
Appears in Collections:藻类生物学及应用研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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