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题名: Effects of taxonomy, sediment, and water column on C:N:P stoichiometry of submerged macrophytes in Yangtze floodplain shallow lakes, China
作者: Su, Haojie1, 2; Wu, Yao1, 2; Xie, Ping1; Chen, Jun1; Cao, Te1; Xia, Wulai1, 2
关键词: Submerged macrophyte ; Sediment ; Water column ; C:N:P stoichiometry ; Eutrophication
刊名: ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
发表日期: 2016-11-01
DOI: 10.1007/s11356-016-7435-1
卷: 23, 期:22, 页:22577-22585
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: Carbon (C), nitrogen (N) and phosphorus (P) are the three most important essential elements limiting growth of primary producers. Submerged macrophytes generally absorb nutrients from sediments by root uptake. However, the C:N:P stoichiometric signatures of plant tissue are affected by many additional factors such as taxonomy, nutrient availability, and light availability. We first revealed the relative importance of taxonomy, sediment, and water column on plant C:N:P stoichiometry using variance partitioning based on partial redundancy analyses. Results showed that taxonomy was the most important factor in determining C:N:P stoichiometry, then the water column and finally the sediment. In this study, a significant positive relationship was found between community C concentration and macrophyte community biomass, indicating that the local low C availability in macrophytes probably was the main reason why submerged macrophytes declined in Yangtze floodplain shallow lakes. Based on our study, it is suggested that submerged macrophytes in Yangtze floodplain shallow lakes are primarily limited by low light levels rather than nutrient availability.
关键词[WOS]: N-P STOICHIOMETRY ; AQUATIC MACROPHYTES ; MYRIOPHYLLUM-SPICATUM ; NUTRIENT AVAILABILITY ; PHOSPHORUS SOURCES ; PLANT-GROWTH ; LIGHT ; NITROGEN ; RESPONSES ; DEPTH
语种: 英语
项目资助者: State Key Laboratory of Freshwater Ecology and Biotechnology(2014FBZ02)
WOS记录号: WOS:000387602800029
ISSN号: 0944-1344
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内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/28673
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, 7 Donghu South Rd, Wuhan 430072, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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