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学科主题: Biochemistry & Molecular Biology; Chemistry; Spectroscopy
题名: Isotopic turnover of a submersed macrophyte following transplant: the roles of growth and metabolism in eutrophic conditions
作者: Xu, Jun ; Cao, Te ; Zhang, Min ; Li, Zhongqiang ; Zhang, Meng ; Ni, Leyi ; Xie, Ping
通讯作者: Xu, J (reprint author), Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, 7 Donghu S Rd, Wuhan 430072, Hubei Province, Peoples R China ; xujun@ihb.ac.cn ; xieping@ihb.ac.cn
关键词: PARTICULATE ORGANIC-MATTER ; STABLE-ISOTOPES ; LABORATORY EXPERIMENTS ; VALLISNERIA-NATANS ; ATLANTIC SALMON ; CARBON TURNOVER ; NITROGEN ; LAKE ; DELTA-N-15 ; RATIOS
刊名: RAPID COMMUNICATIONS IN MASS SPECTROMETRY
发表日期: 2011
卷: 25, 期:21, 页:3267-3273
收录类别: SCI
部门归属: [Xu, Jun; Cao, Te; Ni, Leyi; Xie, Ping] Chinese Acad Sci, Inst Hydrobiol, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol China, Wuhan 430072, Hubei Province, Peoples R China; [Zhang, Min] Huazhong Agr Univ, Coll Fisheries, Wuhan 430070, Peoples R China; [Li, Zhongqiang] Hubei Univ, Fac Resources & Environm, Wuhan 430062, Peoples R China; [Zhang, Meng] Jiangxi Acad Environm Sci, Nanchang 330029, Peoples R China
资助者: National Basic Research Program of China[2008CB418001-1, 2007CB109205]; National Natural Science Foundation of China[30870428, 31170439]; Water Pollution Control and Management Project of China[2008ZX07101-001]; Chinese Academy of Sciences
摘要: Stable isotopic turnover with isotopic change due to growth and metabolic tissue replacement associated with a change in environmental conditions is a critical aspect of the use of stable isotope analyses as time-integrating tracers of resource-consumer interactions. However, stable isotopic turnover in plants remains poorly understood compared with those of animals, and here we used continuous flow elemental analyzer-isotopic ratio mass spectrometry (EA-IRMS) to analyse the turnover of stable carbon and nitrogen isotopes in a submersed macrophyte (Vallisneria natans) after transplantation to hypereutrophic and mesoeutrophic treatments in a field mesocosm experiment. The direction and magnitude of the isotopic shifts of V. natans were suggested to be determined by the inorganic nutrient availability and its isotopic content in the different treatments. Based on the modelling results of turnover, the contribution of growth to the isotopic turnover was as high as those observed in various aquatic ectotherms. However, the contribution of metabolism was also considerable, especially for nitrogen in the hypereutrophic treatment, which was argued to be a response, co-occurring with growth inhabitation and biochemical disorder of V. natans, to the stress induced by the eutrophication. Our results indicated that isotope turnover in a macrophyte is a feasible technique for estimating its ecophysiological conditions in the natural environment, and that it may facilitate understanding of isotopic data in field studies of food web and habitat restoration under eutrophic conditions. Copyright (C) 2011 John Wiley & Sons, Ltd.
语种: 英语
WOS记录号: WOS:000296428600010
ISSN号: 0951-4198
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/16419
Appears in Collections:淡水生态学研究中心_期刊论文

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Xu, Jun; Cao, Te; Zhang, Min; Li, Zhongqiang; Zhang, Meng; Ni, Leyi; Xie, Ping.Isotopic turnover of a submersed macrophyte following transplant: the roles of growth and metabolism in eutrophic conditions,RAPID COMMUNICATIONS IN MASS SPECTROMETRY,2011,25(21):3267-3273
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