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学科主题: Marine & Freshwater Biology
题名: Sympatric variability of isotopic baselines influences modeling of fish trophic patterns
作者: Xu, Jun1; Zhang, Min2; Xie, Ping1
通讯作者: Xu, J (reprint author), Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China ; xujun@ihb.ac.cn ; pingxie@ihb.ac.cn
关键词: Mussel ; Snail ; Stable isotope ; Baseline ; Trophic modeling ; Trophic interaction ; Shallow lake ; Eutrophication
刊名: LIMNOLOGY
发表日期: 2011-08-01
DOI: 10.1007/s10201-010-0327-z
卷: 12, 期:2, 页:107-115
收录类别: SCI
文章类型: Article
部门归属: [Xu, J; Xie, P] Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China; [Zhang, M] Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
资助者: National Natural Science Foundation of China[30870428]; K. C. Wong Education Foundation; Chinese Academy of Sciences; China's Ministry of Environmental Protection[2008ZX07101-001]
类目[WOS]: Limnology
研究领域[WOS]: Marine & Freshwater Biology
摘要: Stable isotope signatures of freshwater snails and mussels have been established as a convenient baseline measurement at the primary consumer level for food-web coupling studies. We measured delta(15)N and delta(13)C of primary consumers, including mussels (Anodonta woodiana, Cristaria plicata, and Unio douglasiae), snails (Bellamya aeruginosa and Hippeutis sp.), and zooplankton from the same habitat within a shallow eutrophic lake. Primary consumers showed positive relationship between delta(15)N and delta(13)C, indicating a linkage between planktonic and benthic habitats in this system. The variation in isotope ratios was higher in short-lived primary consumers (zooplankton) compared with the long-lived primary consumers (mussels and snails), suggesting limited availability of short-lived primary consumers as isotopic baselines in aquatic food-web assessment. Significant differences in isotope ratios were also found among three species of mussels, and when using these mussels separately as pelagic baselines to calculate trophic position and contribution of planktonic and benthic sources of fishes, bias and even misestimates were observed. This finding suggests that caution is needed when multiple primary consumers coexist in the same habitat, and it is important to assess potential effects of different baselines used.
英文摘要: Stable isotope signatures of freshwater snails and mussels have been established as a convenient baseline measurement at the primary consumer level for food-web coupling studies. We measured delta(15)N and delta(13)C of primary consumers, including mussels (Anodonta woodiana, Cristaria plicata, and Unio douglasiae), snails (Bellamya aeruginosa and Hippeutis sp.), and zooplankton from the same habitat within a shallow eutrophic lake. Primary consumers showed positive relationship between delta(15)N and delta(13)C, indicating a linkage between planktonic and benthic habitats in this system. The variation in isotope ratios was higher in short-lived primary consumers (zooplankton) compared with the long-lived primary consumers (mussels and snails), suggesting limited availability of short-lived primary consumers as isotopic baselines in aquatic food-web assessment. Significant differences in isotope ratios were also found among three species of mussels, and when using these mussels separately as pelagic baselines to calculate trophic position and contribution of planktonic and benthic sources of fishes, bias and even misestimates were observed. This finding suggests that caution is needed when multiple primary consumers coexist in the same habitat, and it is important to assess potential effects of different baselines used.
关键词[WOS]: PELAGIC FOOD WEBS ; SHALLOW HYPEREUTROPHIC LAKE ; SUSPENSION-FEEDING BIVALVES ; STABLE CARBON ISOTOPES ; SPATIAL VARIABILITY ; ORGANIC-MATTER ; NITROGEN ; DIET ; DELTA-N-15 ; DELTA-C-13
语种: 英语
WOS记录号: WOS:000292218300001
ISSN号: 1439-8621
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16291
Appears in Collections:淡水生态学研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol China, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2.Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China

Recommended Citation:
Xu, Jun; Zhang, Min; Xie, Ping.Sympatric variability of isotopic baselines influences modeling of fish trophic patterns,LIMNOLOGY,2011,12(2):107-115
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