Variations and possible source of potentially available phosphorus in a Chinese shallow eutrophic lake
文献类型：期刊论文
| 作者 | Zhou, YY; Li, JQ; Song, CL; Cao, XY |
| 刊名 | JOURNAL OF FRESHWATER ECOLOGY
 |
| 出版日期 | 2004-03-01 |
| 卷号 | 19期号:1页码:87-96 |
| 关键词 | ALKALINE-PHOSPHATASE ACTIVITY DISSOLVED ORGANIC PHOSPHORUS HUMIC MATERIALS COMPLEX PHOSPHORUS MARINE IRON FLUCTUATION MECHANISMS SEDIMENTS RELEASE |
| ISSN号 | 0270-5060 |
| 通讯作者 | Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, Lake Donghu Ecosyst Expt Stn, Wuhan 430072, Peoples R China |
| 中文摘要 | Surface, overlying, and interstitial waters were collected at monthly intervals at three experimental stations in a shallow Chinese eutrophic lake (Lake Donghu) to assess the occurrence, distribution, and status of UV-sensitive phosphorus compounds (UVSP) and phosphatase hydrolyzable phosphorus (PHP), coupled with kinetics of alkaline phosphatase activity (APA). Orthophosphate (o-P) concentrations were generally the highest at Station 1, where chlorophyll a (chl a) was a function of o-P at temporal scale. The V-max/K-m of APA obtained by Michaelis-Menten approach paralleled the chlorophyll data at two stations. These facts imply that the development of phytoplankton may be attributed to APA induced by PHP. The potentially available UVSP and PHP peaked in interstitial, overlying, and surface water simultaneously sometimes in 1995 to 1996 and 1997 to 1999. It is postulated that they may arise from the bottom. UVSP peaked in interstitial water at the 12-16 cm layers in sediment cores. Moreover, in interstitial water, UV irradiation resulted in an elevated o-P concentration and decreased APA in a timeseries analysis. Therefore, the mechanism that APA involved in the process of photorelease of o-P was not demonstrated. UVSP is most likely a functional group of labile phosphorus distinct from the enzymatic substrate in this shallow eutrophic lake. |
| 英文摘要 | Surface, overlying, and interstitial waters were collected at monthly intervals at three experimental stations in a shallow Chinese eutrophic lake (Lake Donghu) to assess the occurrence, distribution, and status of UV-sensitive phosphorus compounds (UVSP) and phosphatase hydrolyzable phosphorus (PHP), coupled with kinetics of alkaline phosphatase activity (APA). Orthophosphate (o-P) concentrations were generally the highest at Station 1, where chlorophyll a (chl a) was a function of o-P at temporal scale. The V-max/K-m of APA obtained by Michaelis-Menten approach paralleled the chlorophyll data at two stations. These facts imply that the development of phytoplankton may be attributed to APA induced by PHP. The potentially available UVSP and PHP peaked in interstitial, overlying, and surface water simultaneously sometimes in 1995 to 1996 and 1997 to 1999. It is postulated that they may arise from the bottom. UVSP peaked in interstitial water at the 12-16 cm layers in sediment cores. Moreover, in interstitial water, UV irradiation resulted in an elevated o-P concentration and decreased APA in a timeseries analysis. Therefore, the mechanism that APA involved in the process of photorelease of o-P was not demonstrated. UVSP is most likely a functional group of labile phosphorus distinct from the enzymatic substrate in this shallow eutrophic lake. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 学科主题 | Ecology; Limnology |
| 类目[WOS] | Ecology ; Limnology |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| 关键词[WOS] | ALKALINE-PHOSPHATASE ACTIVITY ; DISSOLVED ORGANIC PHOSPHORUS ; HUMIC MATERIALS ; COMPLEX PHOSPHORUS ; MARINE ; IRON ; FLUCTUATION ; MECHANISMS ; SEDIMENTS ; RELEASE |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000189324900012 |
| 公开日期 | 2010-10-13 |
| 源URL | [http://ir.ihb.ac.cn/handle/152342/9542]  |
| 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, Lake Donghu Ecosyst Expt Stn, Wuhan 430072, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhou, YY,Li, JQ,Song, CL,et al. Variations and possible source of potentially available phosphorus in a Chinese shallow eutrophic lake[J]. JOURNAL OF FRESHWATER ECOLOGY,2004,19(1):87-96. |
| APA | Zhou, YY,Li, JQ,Song, CL,&Cao, XY.(2004).Variations and possible source of potentially available phosphorus in a Chinese shallow eutrophic lake.JOURNAL OF FRESHWATER ECOLOGY,19(1),87-96. |
| MLA | Zhou, YY,et al."Variations and possible source of potentially available phosphorus in a Chinese shallow eutrophic lake".JOURNAL OF FRESHWATER ECOLOGY 19.1(2004):87-96. |
入库方式： OAI收割
来源：水生生物研究所
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