Spatial patterns of leaf carbon, nitrogen stoichiometry and stable carbon isotope composition of Ranunculus natans CA Mey. (Ranunculaceae) in the arid zone of northwest China

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	Spatial patterns of leaf carbon, nitrogen stoichiometry and stable carbon isotope composition of Ranunculus natans CA Mey. (Ranunculaceae) in the arid zone of northwest China
	Li, Zhongqiang 1; Yang, Lei 1; Lu, Wei 1; Guo, Wei 1; Gong, Xusheng 1; Xu, Jun 2; Yu, Dan 3
刊名	ECOLOGICAL ENGINEERING
	2015-04-01
卷号	77 页码:9-17
关键词	Aquatic macrophytes Arid zone C:N stoichiometry Stable isotope composition Temperature-plant physiology hypothesis
ISSN号	0925-8574
通讯作者	Li, ZQ (reprint author), Hubei Univ, Coll Resources & Environm, Wuhan, Peoples R China.
英文摘要	Leaf carbon concentrations (C%), nitrogen concentrations (N%), carbon-nitrogen ratio (C:N) and stable carbon isotope composition (delta C-13) are key foliar traits with great ecological importance, but few studies have attempted to document the pattern of leaf C%, N%, C:N and delta C-13 value for aquatic macrophytes. In this study, we examined the pattern of leaf C%, N%, C:N and delta C-13 value of Ranunculus natans collected from 26 sites across northwest China, and tried to explore how different environmental conditions affect leaf C%, N%, C: N stoichiometry, and delta C-13 value. Results showed that leaf N%, C:N ratios and delta C-13 varied significantly among the 26 R. natnas collection sites, but leaf C% did not differ significantly. Our study found weak relationships between foliar N% and C: N of R. natans and altitude, latitude and longitude, which indicated that variability in foliar N%, C:N stoichiometry across diverse habitats may result from plant growth, development, metabolism, phenological and life history traits, rather than from variation in geographic environment. We also demonstrated that leaf delta C-13 values displayed a linear increase in altitudinal direction. The differences in delta C-13 values were likely caused by stomatal limitation rather than by nutrient-related changes in photosynthetic efficiency because delta C-13 values in R. natans were not correlated with foliar N concentrations. Our data support the previously proposed temperature-plant physiology hypothesis because there is a negative relationship between leaf N% of R. natans and temperature of water body where R. natans inhabits. (C) 2015 Elsevier B.V. All rights reserved.
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
关键词[WOS]	WATER-USE EFFICIENCY ; N-P STOICHIOMETRY ; PHOSPHORUS STOICHIOMETRY ; NUTRIENT AVAILABILITY ; ENVIRONMENTAL-FACTORS ; GRASSLAND BIOMES ; PLANTS ; DISCRIMINATION ; PHOTOSYNTHESIS ; TERRESTRIAL
收录类别	SCI
语种	英语
WOS记录号	WOS:000351705100002
内容类型	期刊论文
源URL	[http://ir.ihb.ac.cn/handle/342005/23862]
专题	水生生物研究所_淡水生态学研究中心_期刊论文
作者单位	1.Hubei Univ, Coll Resources & Environm, Wuhan, Peoples R China 2.Chinese Acad Sci, Inst Hydrobiol, Beijing 100864, Peoples R China 3.Wuhan Univ, Coll Life Sci, Wuhan 430072, Peoples R China
推荐引用方式 GB/T 7714	Li, Zhongqiang,Yang, Lei,Lu, Wei,et al. Spatial patterns of leaf carbon, nitrogen stoichiometry and stable carbon isotope composition of Ranunculus natans CA Mey. (Ranunculaceae) in the arid zone of northwest China[J]. ECOLOGICAL ENGINEERING,2015,77:9-17.
APA	Li, Zhongqiang.,Yang, Lei.,Lu, Wei.,Guo, Wei.,Gong, Xusheng.,...&Yu, Dan.(2015).Spatial patterns of leaf carbon, nitrogen stoichiometry and stable carbon isotope composition of Ranunculus natans CA Mey. (Ranunculaceae) in the arid zone of northwest China.ECOLOGICAL ENGINEERING,77,9-17.
MLA	Li, Zhongqiang,et al."Spatial patterns of leaf carbon, nitrogen stoichiometry and stable carbon isotope composition of Ranunculus natans CA Mey. (Ranunculaceae) in the arid zone of northwest China".ECOLOGICAL ENGINEERING 77(2015):9-17.