Phytoplankton dynamics and implications for eutrophication management in an urban river with a series of rubber dams
文献类型：期刊论文
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| 作者 | Bao, Linlin; Chen, Jie; Tong, Hongjin; Qian, Jun; Li, Xuyong
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| 刊名 | JOURNAL OF ENVIRONMENTAL MANAGEMENT
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| 出版日期 | 2022-06-01 |
| 卷号 | 311期号:0页码:114865 |
| 关键词 | WATER-QUALITY PHOSPHORUS RETENTION TROPICAL RIVER BETA-DIVERSITY FRESH-WATER COMMUNITY RESERVOIR NITROGEN IMPACTS BIOMASS |
| ISSN号 | 0301-4797 |
| 英文摘要 | Rubber dams are widely used in urban rivers for landscape construction and flood control. However, the increased water residence time by dams usually causes phytoplankton accumulation. Developing a greater understanding of the phytoplankton dynamics and the effecting factors is essential for the eutrophication control of dammed rivers. Here, we investigated the variations in biomass and structure of phytoplankton communities along an urban landscape river with 30 rubber dams, and the main controlling factors during a 2-yr field monitoring. The biomass of phytoplankton significantly increased from 12.7 mu g/L-Chl a and 1.14 x 10(7) ind./Lcells at the natural river part above dams to 65.2 mu g/L-Chl a and 1.16 x 10(8) ind./L-cells at the 30th dam on average. There were different dominant taxa of phytoplankton between river sections with and without dams in different seasons. As Bacillariophyta dominated at the natural river part above dams throughout the year, accounting for 64.6% on average, and dominated at the 13th and 30th dams during the cold seasons (69.6% on average). But during the warm seasons, Cyanophyta and Chlorophyta increased obviously in the dammed river sections and became dominant taxa at the 30th dam, accounting for 55.9% and 34.7% respectively. The alpha-diversity of phytoplankton decreased along the series of dams. While the beta-diversity between river sections with and without dams increased because of species replacement. Redundancy analysis revealed that nutrients, flow velocity and temperature were the main factors influencing the spatial-temporal variation in phytoplankton community structure in this river. High-frequency monitoring data further indicated that phosphorus and discharge explained most of the variations in phytoplankton biomass within the 13th dam impoundment. It suggested that management strategies should focus on reducing the phosphorus input concentration under 0.164 mg/L and increase the discharge higher than 0.64 m3/s during warm seasons, to prevent phytoplankton bloom and further eutrophication problems in this dammed river. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47312]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Li, Xuyong |
| 作者单位 | 1.Sichuan Acad Environm Sci, Chengdu 610041, Peoples R China 2.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 3.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Bao, Linlin,Chen, Jie,Tong, Hongjin,et al. Phytoplankton dynamics and implications for eutrophication management in an urban river with a series of rubber dams, Phytoplankton dynamics and implications for eutrophication management in an urban river with a series of rubber dams.pdf[J]. JOURNAL OF ENVIRONMENTAL MANAGEMENT,2022,311(0):114865. |
| APA | Bao, Linlin,Chen, Jie,Tong, Hongjin,Qian, Jun,&Li, Xuyong.(2022).Phytoplankton dynamics and implications for eutrophication management in an urban river with a series of rubber dams.JOURNAL OF ENVIRONMENTAL MANAGEMENT,311(0),114865. |
| MLA | Bao, Linlin,et al."Phytoplankton dynamics and implications for eutrophication management in an urban river with a series of rubber dams".JOURNAL OF ENVIRONMENTAL MANAGEMENT 311.0(2022):114865. |
入库方式： OAI收割
来源：生态环境研究中心
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