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Seasonal Trophic Shift of Littoral Consumers in Eutrophic Lake Taihu (China) Revealed by a Two-Source Mixing Model

文献类型：期刊论文

作者Zhou, Qiong1,2; Xie, Ping1,2; Xu, Jun1; Liang, Xufang2; Qin, Jianhui2; Cao, Te1; Chen, Feizhou3
刊名THESCIENTIFICWORLDJOURNAL
出版日期2011
卷号11期号:0页码:1442-1454
关键词stable isotope mixing model trophic shift benthic and planktonic energy sources Lake Taihu
ISSN号1537-744X
通讯作者Xie, P (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan, Peoples R China ; xieping@ihb.ac.cn ; xujun@ihb.ac.cn
中文摘要We evaluated the seasonal variation in the contributions of planktonic and benthic resources to 11 littoral predators in eutrophic Lake Taihu (China) from 2004 to 2005. Seasonal fluctuations in consumer delta(13)C and delta(15)N were attributed to the combined impacts of temporal variation in isotopic signatures of basal resources and the diet shift of fishes. Based on a two-end-member mixing model, all target consumers relied on energy sources from coupled benthic and planktonic pathways, but the predominant energy source for most species was highly variable across seasons, showing seasonal trophic shift of littoral consumers. Seasonality in energy mobilization of consumers focused on two aspects: (1) the species number of consumers that relied mainly on planktonic carbon showed the lowest values in the fall and the highest during spring/summer, and (2) most consumer species showed seasonal variation in the percentages of planktonic reliance. We concluded that seasonal trophic shifts of fishes and invertebrates were driven by phytoplankton production, but benthic resources were also important seasonally in supporting littoral consumers in Meiliang Bay. Energy mobilization of carnivorous fishes was more subject to the impact of resource availability than omnivorous species.
英文摘要We evaluated the seasonal variation in the contributions of planktonic and benthic resources to 11 littoral predators in eutrophic Lake Taihu (China) from 2004 to 2005. Seasonal fluctuations in consumer delta(13)C and delta(15)N were attributed to the combined impacts of temporal variation in isotopic signatures of basal resources and the diet shift of fishes. Based on a two-end-member mixing model, all target consumers relied on energy sources from coupled benthic and planktonic pathways, but the predominant energy source for most species was highly variable across seasons, showing seasonal trophic shift of littoral consumers. Seasonality in energy mobilization of consumers focused on two aspects: (1) the species number of consumers that relied mainly on planktonic carbon showed the lowest values in the fall and the highest during spring/summer, and (2) most consumer species showed seasonal variation in the percentages of planktonic reliance. We concluded that seasonal trophic shifts of fishes and invertebrates were driven by phytoplankton production, but benthic resources were also important seasonally in supporting littoral consumers in Meiliang Bay. Energy mobilization of carnivorous fishes was more subject to the impact of resource availability than omnivorous species.
WOS标题词Science & Technology ; Life Sciences & Biomedicine
学科主题Environmental Sciences & Ecology; Science & Technology - Other Topics
类目[WOS]Environmental Sciences ; Multidisciplinary Sciences
研究领域[WOS]Environmental Sciences & Ecology ; Science & Technology - Other Topics
关键词[WOS]2 BIOMANIPULATION FISHES ; STABLE-ISOTOPE RATIOS ; PELAGIC FOOD WEBS ; NITROGEN ISOTOPES ; LARGEMOUTH BASS ; CARBON ISOTOPES ; ORGANIC-MATTER ; WATER-QUALITY ; MEILIANG BAY ; LARGE PEN
收录类别SCI
资助信息National Basic Research Program of China[2008CB418001-1]; National Natural Science Foundation of China[30870428]; State Key Laboratory of Freshwater Ecology and Biotechnology of China[2011FB09]
语种英语
WOS记录号WOS:000293344400002
公开日期2011-12-22
源URL[http://ir.ihb.ac.cn/handle/342005/16429]  
专题水生生物研究所_淡水生态学研究中心_期刊论文
作者单位1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan, Peoples R China
2.Huazhong Agr Univ, Coll Fisheries, Wuhan, Peoples R China
3.Chinese Acad Sci, Nanjing Inst Geog & Limnol, State Key Lab Lake Sci & Environm, Nanjing, Peoples R China
推荐引用方式
GB/T 7714		 Zhou, Qiong,Xie, Ping,Xu, Jun,et al. Seasonal Trophic Shift of Littoral Consumers in Eutrophic Lake Taihu (China) Revealed by a Two-Source Mixing Model[J]. THESCIENTIFICWORLDJOURNAL,2011,11(0):1442-1454.
APA Zhou, Qiong.,Xie, Ping.,Xu, Jun.,Liang, Xufang.,Qin, Jianhui.,...&Chen, Feizhou.(2011).Seasonal Trophic Shift of Littoral Consumers in Eutrophic Lake Taihu (China) Revealed by a Two-Source Mixing Model.THESCIENTIFICWORLDJOURNAL,11(0),1442-1454.
MLA Zhou, Qiong,et al."Seasonal Trophic Shift of Littoral Consumers in Eutrophic Lake Taihu (China) Revealed by a Two-Source Mixing Model".THESCIENTIFICWORLDJOURNAL 11.0(2011):1442-1454.

入库方式： OAI收割

来源：水生生物研究所

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