Contributions of phosphatase and microbial activity to internal phosphorus loading and their relation to lake eutrophication
文献类型：期刊论文
| 作者 | Song Chunlei; Cao Xiuyun; Li Jianqiu; Li Qingman; Chen Guoyuan; Zhou Yiyong |
| 刊名 | SCIENCE IN CHINA SERIES D-EARTH SCIENCES
 |
| 出版日期 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 学科主题 | Geosciences, Multidisciplinary |
| 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 |
| 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. |
入库方式： OAI收割
来源：水生生物研究所
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