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题名: Effects of water depth on carbon, nitrogen and phosphorus stoichiometry of five submersed macrophytes in an in situ experiment
作者: Li, Wei1, 2; Cao, Te1; Ni, Leyi1; Zhang, Xiaolin1; Zhu, Guorong3; Xie, Ping1
关键词: Water level ; Nitrogen ; Phosphorus ; Stoichiometry ; Submersed macrophyte
刊名: ECOLOGICAL ENGINEERING
发表日期: 2013-12-01
DOI: 10.1016/j.ecoleng.2013.09.028
卷: 61, 期:12, 页:358-365
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: The distribution of submersed macrophytes is wide across environmental gradient, e.g. depth profile. Submersed macrophytes develop great phenotypic plasticity in response to increasing water depth. However, the effects of water depth on carbon (C), nitrogen (N) and phosphorus (P) stoichiometry of submersed macrophytes are not very clear. In this study, five submersed macrophyte species (Potamogeton malaianus, Potamogeton maackianus, Myriophyllum spicatum, Ceratophyllum demersum and Hydrilla verticillata) were cultured at three water depths (1 m, 2.5 m and 4 m). The C, N and P concentrations and C:N:P stoichiometry were examined in leaves, stems and roots (underground parts) of the plants. We found that the increased water depth significantly inhibited growth of all the plants, but relatively less affect the C, N and P concentrations and C:N:P stoichiometry of the plants. The organs and the species together explained more than 65% of the total variance in the C, N and P concentrations and C:N:P stoichiometry, but water depth contributed to less than 2% of the variance. Significant effects of water depth were only observed for the leaf N and P concentrations of C. demersum and the leaf P concentrations of P. maackianus and P. malaianus. Strong stoichiometric homeostasis was found in submersed macrophytes. Our results imply that the C:N:P stoichiometry of submersed macrophytes is affected not by water levels directly but the species identity instead. (C) 2013 Elsevier B.V. All rights reserved.
关键词[WOS]: PLANT COMMUNITY STRUCTURE ; N-P STOICHIOMETRY ; FRESH-WATER ; BIOLOGICAL STOICHIOMETRY ; NUTRIENT AVAILABILITY ; AQUATIC MACROPHYTES ; WETLAND PLANTS ; LIGHT ; TERRESTRIAL ; ECOSYSTEMS
语种: 英语
WOS记录号: WOS:000328487200043
ISSN号: 0925-8574
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/19365
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, Donghu Expt Stn Lake Ecosyst, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Henan Normal Univ, Coll Fisheries, Xinxiang 453007, Peoples R China

Recommended Citation:
李威. Effects of water depth on carbon, nitrogen and phosphorus stoichiometry of five submersed macrophytes in an in situ experiment[J]. Ecological Engineering,2013,61(12):358-365.
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文件名: Li et al. 2013 EE.pdf
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