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Potential influence of water level changes on energy flows in a lake food web
Wang Yuyu; Yu XiuBo; Li WenHua; Xu Jun; Chen YuWei; Fan Na; Yu XiuBo,Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; yuxb@igsnrr.ac.cn
2011
Source PublicationCHINESE SCIENCE BULLETIN
ISSN1001-6538
Volume56Issue:26Pages:2794-2802
AbstractLarge seasonal water-level fluctuations may influence isotopic signatures of primary producers and the types and amounts of these potential food sources accessible to aquatic fauna of Poyang Lake, the largest freshwater lake in China. In this study, the isotopic signatures of primary producers and consumers were determined, stable carbon and nitrogen isotope analysis and mixing models were combined to investigate the influence of water levels on the diet and isotopic composition of Poyang Lake fish and invertebrates. Five potential food sources (seston, benthic organic matter, aquatic macrophytes, attached algae, and terrestrial plants), 4 species of invertebrates, and 10 species of fish were collected from the lake area during dry and wet seasons between January 2009 and April 2010. The delta (13)C values of invertebrates and most fish were within the range of delta (13)C values of the potential food sources for both seasons. The delta (13)C values of invertebrates and most fish were lower in the dry season than in the wet season, whereas the delta (15)N values exhibited different patterns for different species. Mixing models indicated that the most important food sources for common lake fauna were seston in the dry season and aquatic macrophytes and terrestrial plants in the wet season. The fauna were more omnivorous in the wet season than in the dry season. The food web dynamics of Poyang Lake are strongly influenced by changes in the abundance and accessibility of different basal food sources that occur because of seasonal flood pulses. The trophic links within the aquatic communities of Poyang Lake are modified by water-level fluctuations.
KeywordStable Isotopes Seasonal Food Sources Isosource Model Water Level Poyang Lake
Department[Wang, YY; Yu, XB; Li, WH; Fan, N] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; [Wang, YY; Fan, N] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China; [Xu, J] Chinese Acad Sci, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Inst Hydrobiol, Wuhan 430072, Peoples R China; [Xu, J] Lund Univ, Inst Ecol, SE-22362 Lund, Sweden; [Chen, YW] Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China
Subject AreaScience & Technology - Other Topics
Funding OrganizationNational Basic Research Program of China[2009CB421106]; National Natural Science Foundation of China[30870428]; K. C. Wong Education Foundation; Chinese Academy of Sciences ; National Basic Research Program of China[2009CB421106]; National Natural Science Foundation of China[30870428]; K. C. Wong Education Foundation; Chinese Academy of Sciences ; National Basic Research Program of China[2009CB421106]; National Natural Science Foundation of China[30870428]; K. C. Wong Education Foundation; Chinese Academy of Sciences ; National Basic Research Program of China[2009CB421106]; National Natural Science Foundation of China[30870428]; K. C. Wong Education Foundation; Chinese Academy of Sciences
Indexed BySCI
Language英语
WOS IDWOS:000294216000005
Funding OrganizationNational Basic Research Program of China[2009CB421106]; National Natural Science Foundation of China[30870428]; K. C. Wong Education Foundation; Chinese Academy of Sciences ; National Basic Research Program of China[2009CB421106]; National Natural Science Foundation of China[30870428]; K. C. Wong Education Foundation; Chinese Academy of Sciences ; National Basic Research Program of China[2009CB421106]; National Natural Science Foundation of China[30870428]; K. C. Wong Education Foundation; Chinese Academy of Sciences ; National Basic Research Program of China[2009CB421106]; National Natural Science Foundation of China[30870428]; K. C. Wong Education Foundation; Chinese Academy of Sciences
Citation statistics
Cited Times:31[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16273
Collection淡水生态学研究中心_期刊论文
Corresponding AuthorYu XiuBo,Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China; yuxb@igsnrr.ac.cn
Recommended Citation
GB/T 7714
Wang Yuyu,Yu XiuBo,Li WenHua,et al. Potential influence of water level changes on energy flows in a lake food web[J]. CHINESE SCIENCE BULLETIN,2011,56(26):2794-2802.
APA Wang Yuyu.,Yu XiuBo.,Li WenHua.,Xu Jun.,Chen YuWei.,...&yuxb@igsnrr.ac.cn.(2011).Potential influence of water level changes on energy flows in a lake food web.CHINESE SCIENCE BULLETIN,56(26),2794-2802.
MLA Wang Yuyu,et al."Potential influence of water level changes on energy flows in a lake food web".CHINESE SCIENCE BULLETIN 56.26(2011):2794-2802.
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