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题名: Stoichiometric characteristics of four submersed macrophytes in three plateau lakes with contrasting trophic statuses
作者: Li, Wei1, 2, 3; Zhong, Jiayou3; Yuan, Guixiang3; Fu, Hui3; Fan, Houbao2; Ni, Leyi1; Xie, Ping1; Cao, Te1
关键词: C: N: P stoichiometric characteristics ; Submersed macrophyte ; Plateau lake ; Nutrient status
刊名: ECOLOGICAL ENGINEERING
发表日期: 2017-02-01
DOI: 10.1016/j.ecoleng.2016.11.059
卷: 99, 页:265-270
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine ; Technology
类目[WOS]: Ecology ; Engineering, Environmental ; Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology ; Engineering
英文摘要: Plant nutrient concentrations and their stoichiometric characteristics are often used to predict nutrient availability and nutrient limitation. However, there is still debate because plants, especially submersed macrophytes, can store excess nutrients and exhibit different survival strategies. To determine the extent to which the trophic status of lakes affect nutrient concentrations of submersed macrophytes and to estimate the relative contribution of lake and interspecific differences to variation of plant nutrient concentrations, we investigated four common submersed macrophytes, Potamogeton maackianus, Potamogeton pectinatus, Potamogeton malaianus and Myriophyllum spicatum, in three plateau lakes with contrasting trophic statuses ( i.e. oligotrophic: Fuxian Lake; mesotrophic: Erhai Lake; eutrophic: Dianchi Lake) in Yungui Plateau in southwest China. The results indicated that the average C: N ratios were not different among the three lakes. However, the C: P and N: P ratios in Erhai Lake and Dianchi Lake were significantly lower than those in Fuxian Lake. The N: P ratios of P. maackianus and P. pectinatus did not significantly differ among the lakes. By contrast, the N: P ratios of P. malaianus and M. spicatum indicated different levels of interspecific stoichiometric homeostasis. The C and N concentrations and C: N ratios were mainly determined by the species, while the P concentrations and C: P ratios were mainly determined by the trophic status of lakes. Our study suggested that the C: N: P stoichiometric characteristics of submersed macrophytes exhibit high interspecific differences but substantial homoeostasis in response to different trophic conditions in plateau lakes. (C) 2016 Elsevier B.V. All rights reserved.
关键词[WOS]: PLANT COMMUNITY STRUCTURE ; WATER DEPTH ; AQUATIC MACROPHYTES ; PHOSPHORUS CONCENTRATIONS ; NUTRIENT LIMITATION ; HIGH-NITROGEN ; GROWTH ; LIGHT ; CARBON ; AVAILABILITY
语种: 英语
项目资助者: Science and Technology Program Project of Jiangxi province, China(20151BAB214006 ; Science and Technology Promotion Project of Ministry of Water Resources of China(TG1520) ; National High Technology Research and Development Program of China(2012ZX07105-004) ; 20161BBG70048 ; 20161BAB214153)
WOS记录号: WOS:000391838600029
ISSN号: 0925-8574
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/28867
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, Donghu Expt Stn Lake Ecosyst, State Key Lab Freshwater Ecol & Biotechnol, Inst Hydrobiol, Wuhan 430072, Peoples R China
2.Nanchang Inst Technol, Res Inst Ecol & Environm Sci, Nanchang 330099, Jiangxi, Peoples R China
3.Jiangxi Inst Water Sci, Jiangxi Prov Key Lab Water Resources & Environm P, Nanchang 330029, Jiangxi, Peoples R China
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