Dredging effects on P status and phytoplankton density and composition during winter and spring in Lake Taihu, China
文献类型：会议论文
| 作者 | Cao, Xiuyun ; Song, Chunlei ; Li, Qingman ; Zhou, Yiyong |
| 出版日期 | 2007 |
| 会议名称 | International Symposium on the Eutrophication Process and Control in Large Shallow Lakes |
| 会议日期 | APR 22-26, 2005 |
| 会议地点 | Nanjing, PEOPLES R CHINA |
| 关键词 | phytoplankton phosphorus alkaline phosphatase ELF sediment dredging shallow lakes eutrophication |
| 页码 | 287-295 |
| 通讯作者 | Zhou, YY, Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Peoples R China |
| 中文摘要 | Phytoplankton density and composition, together with phosphorus (P) concentrations and size-fractionated alkaline phosphatase activity (APA), were investigated in dredged and undredged zones in Lake Taihu from January to April 2004. P concentrations were also determined in the corresponding interstitial water. Enzyme Labeled Fluorescence (ELF) was used for localizing extracellular phosphatase on phytoplankton cell membranes in April. The increase in phytoplankton density was paralleled by a significant increase in soluble reactive P (SRP) concentrations in the water column and interstitial water at all sites from January to April, with chlorophyte gradually becoming dominant. In February, at the undredged site, more algae dominated by chlorophyte occurred in overlying water, rather than in the surface, coinciding with higher SRP concentrations in overlying and interstitial water. Therefore, P status in the bottom is important to phytoplankton development in terms of density and composition. Undredged sites had higher SRP concentrations in interstitial water than dredged sites. Furthermore, Higher APA was observed, accompanied by higher dissolved organic P (DOP) and lower total P at the undredged site in February. Enzymatic hydrolysis of DOP may have been an additional source of P for phytoplankton. In April, Schroederia sp. was ELF labeled in surface water at the dredged site, which showed markedly lower SRP concentration, but not at the undredged site with higher SRP concentration. Thus, the dredging might regulate algal density and composition in water column by reducing P bioavailability. |
| 收录类别 | SCI |
| 会议录 | HYDROBIOLOGIA
 |
| 语种 | 英语 |
| WOS记录号 | WOS:000244992800029 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/11777]  |
| 专题 | 水生生物研究所_中科院水生所知识产出（2009年前）_会议论文 |
| 推荐引用方式 GB/T 7714 | Cao, Xiuyun,Song, Chunlei,Li, Qingman,et al. Dredging effects on P status and phytoplankton density and composition during winter and spring in Lake Taihu, China[C]. 见:International Symposium on the Eutrophication Process and Control in Large Shallow Lakes. Nanjing, PEOPLES R CHINA. APR 22-26, 2005. |
入库方式： OAI收割
来源：水生生物研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。