Scaling responses of leaf nutrient stoichiometry to the lakeshore flooding duration gradient across different organizational levels

	Scaling responses of leaf nutrient stoichiometry to the lakeshore flooding duration gradient across different organizational levels
	Chen, Yasong; Stagg, Camille L.; Cai, Yongjiu; Lu, Xiaotao; Wang, Xiaolong; Shen, Ruichang; Lan, Zhichun
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2020
卷号	740
英文摘要	Most wetlands have been subject to changes in flooding regimes by climate change and human activities, resulting in widespread alteration of wetland plants at different organizational levels. However, scaling the responses of wetland plants to changes in flooding regimes is still challenging, because flooding could indirectly affect wetland plants through affecting environment factors (e.g. soil properties). During the non-flooding period, we investigated leaf N and P stoichiometry at three organizational levels (infra-species, inter-species, inter-community) along a flooding duration gradient in a lakeshore meadow of Poyang Lake floodplain, China. At the intra-species level, leaf N and P stoichiometry showed species-specific responses to flooding duration. At the inter-species level, leaf N or P contents or N:P ratio showed no significant response to flooding duration. At the inter-community level, leaf N and P contents significantly increased with flooding duration, while leaf N:P ratio decreased. At each organizational level, leaf N and P stoichiometry showed poor correlation with soil N and P stoichiometry. Moreover, intra-specific responses of leaf N and P contents to flooding duration and soil nutrient content increased with mean flooding duration of species distribution, which was the index of species hydrological niche. Intraspecific variation had lower contribution than species turnover to variations in community leaf nutrient stoichiometry. In all, flooding duration affected leaf N and P stoichiometry mainly through direct pathway at the intra-species and inter-community level, rather than the indirect pathway via soil nutrient stoichiometry. Therefore, our results have implications for scaling up from environmental conditions to ecosystem processes via wetland plant communities. (C) 2020 Elsevier B.V. All rights reserved.
内容类型	期刊论文
源URL	[http://159.226.73.51/handle/332005/20284]
专题	中国科学院南京地理与湖泊研究所
推荐引用方式 GB/T 7714	Chen, Yasong,Stagg, Camille L.,Cai, Yongjiu,et al. Scaling responses of leaf nutrient stoichiometry to the lakeshore flooding duration gradient across different organizational levels[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,740.
APA	Chen, Yasong.,Stagg, Camille L..,Cai, Yongjiu.,Lu, Xiaotao.,Wang, Xiaolong.,...&Lan, Zhichun.(2020).Scaling responses of leaf nutrient stoichiometry to the lakeshore flooding duration gradient across different organizational levels.SCIENCE OF THE TOTAL ENVIRONMENT,740.
MLA	Chen, Yasong,et al."Scaling responses of leaf nutrient stoichiometry to the lakeshore flooding duration gradient across different organizational levels".SCIENCE OF THE TOTAL ENVIRONMENT 740(2020).