Ecosystem metabolism and the driving factors in Xiangxi Bay of Three Gorges Reservoir, China
文献类型：期刊论文
| 作者 | Ye, Lin1; Cai, Qinghua1; Zhang, Min2; Tan, Lu1; Shen, Henglun1 |
| 刊名 | FRESHWATER SCIENCE
 |
| 出版日期 | 2016-09-01 |
| 卷号 | 35期号:3页码:826-833 |
| 关键词 | ecosystem metabolism gross primary production large reservoir net ecosystem production phytoplankton bloom respiration |
| ISSN号 | 2161-9549 |
| 英文摘要 | Ecosystem metabolism determines organic matter cycling and trophic structure in aquatic ecosystems. Ecosystem metabolism is well studied in ponds, lakes, estuaries, streams, and rivers, but it is seldom investigated in large reservoirs. Here, we report daily ecosystem metabolism (26 January-10 May 2009), measured with the free-water technique, in the surface layer of Xiangxi Bay, Three Gorges Reservoir. Further, we investigated the potential factors influencing variation in metabolic processes by systematically testing 4 hypotheses based on phytoplankton biomass, water temperature, nutrient concentration, and light availability. Daily dynamics of respiration (R), gross primary production (GPP), and net ecosystem production (NEP) had high variability during the spring phytoplankton blooms in Xiangxi Bay. GPP ranged from 0.57 to 9.79 mg O-2 L-1 d(-1); R ranged from 0.27 to 7.80 mg O-2 L-1 d(-1); and NEP ranged from -4.24 to 1.96 mg O-2 L-1 d(-1) (mean = -0.26 mg O-2 L-1 d(-1)). Further analysis showed that: 1) GPP is determined by phytoplankton biomass and maximum daily photosynthetically active radiation (PAR); 2) R is determined by phytoplankton biomass and water temperature; and 3) NEP has a significant positive correlation with soluble reactive P. However, the potential mechanism explaining the relationship between NEP and P requires further research. Our study reveals that the metabolic processes in Xiangxi Bay are determined mainly by phytoplankton biomass, water temperature, and maximum daily PAR. This work improves our understanding of ecosystem metabolism in Three Gorges Reservoir. |
| WOS标题词 | Science & Technology ; Life Sciences & Biomedicine |
| 类目[WOS] | Ecology ; Marine & Freshwater Biology |
| 研究领域[WOS] | Environmental Sciences & Ecology ; Marine & Freshwater Biology |
| 关键词[WOS] | DISSOLVED ORGANIC-CARBON ; LAKE METABOLISM ; PHYTOPLANKTON ; RIVER ; RESPIRATION ; TEMPERATURE ; VARIABILITY ; PHOSPHORUS ; LIMITATION ; DYNAMICS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000381446500006 |
| 源URL | [http://ir.ihb.ac.cn/handle/342005/28340]  |
| 专题 | 水生生物研究所_藻类生物学及应用研究中心_学位论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China 2.China Inst Water Resources & Hydropower Res, Dept Water Environm, Beijing 100038, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ye, Lin,Cai, Qinghua,Zhang, Min,et al. Ecosystem metabolism and the driving factors in Xiangxi Bay of Three Gorges Reservoir, China[J]. FRESHWATER SCIENCE,2016,35(3):826-833. |
| APA | Ye, Lin,Cai, Qinghua,Zhang, Min,Tan, Lu,&Shen, Henglun.(2016).Ecosystem metabolism and the driving factors in Xiangxi Bay of Three Gorges Reservoir, China.FRESHWATER SCIENCE,35(3),826-833. |
| MLA | Ye, Lin,et al."Ecosystem metabolism and the driving factors in Xiangxi Bay of Three Gorges Reservoir, China".FRESHWATER SCIENCE 35.3(2016):826-833. |
入库方式： OAI收割
来源：水生生物研究所
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