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学科主题: Ecology; Limnology
题名: Studies on the food web structure of Lake Donghu using stable carbon and nitrogen isotope ratios
作者: Jun Xu ; Ping Xie
通讯作者: Xie, P, Chinese Acad Sci, Grad Sch,Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
关键词: TROPHIC STRUCTURE ; DIET ; MACROPHYTES ; INDICATORS ; DYNAMICS ; ANIMALS ; MARINE
刊名: JOURNAL OF FRESHWATER ECOLOGY
发表日期: 2004
卷: 19, 期:4, 页:645-650
收录类别: SCI
部门归属: Chinese Acad Sci, Grad Sch,Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Peoples R China
摘要: Food web structure was studied by using carbon and nitrogen isotope ratios in a hypereutrophic subtropical Chinese lake, Lake Donghu. High external nutrient loading and the presence of abundant detritus from submersed macrophytes were responsible for the high sediment delta(15)N and delta(13)C, respectively. C-13 was significantly higher in submersed macrophytes than in other macrophytes. The similar delta(13)C values in phytoplankton, zooplankton, zoobenthos, and planktivorous fish indicate that phytoplankton was the major food source for the consumers. By using a delta(15)N mass balance model, we estimate that the contributions of zooplankton to the diet of silver carp and bighead carp were 54% and 74%, respectively, which is in agreement with previous microscopic observations on intestinal contents of these fishes.
WOS记录号: WOS:000225656300016
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/152342/9364
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Jun Xu; Ping Xie.Studies on the food web structure of Lake Donghu using stable carbon and nitrogen isotope ratios,JOURNAL OF FRESHWATER ECOLOGY,2004,19(4):645-650
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