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Intraspecific trait variation drives grassland species richness and productivity under changing precipitation

文献类型：期刊论文

作者Deng, Meifeng1; Liu, Weixing1; Li, Ping1; Jiang, Lin4; Li, Shaopeng3; Jia, Zhou1; Yang, Sen1; Guo, Lulu1; Wang, Zhenhua1; Liu, Lingli1
刊名ECOSPHERE
出版日期2021
卷号12期号:8
关键词biodiversity and productivity community assembly drylands external and internal filtering functional redundancy grasslands intraspecific trait variation precipitation change
ISSN号2150-8925
DOI10.1002/ecs2.3707
文献子类Article
英文摘要It has been increasingly recognized that plant traits and their intraspecific variation play pivotal roles in determining how ecosystem structure and function respond to a changing environment. Yet, it remains unclear how and which plant traits regulate the assembly process and thus affect ecosystem structure and function under climate changes. Here, we selected six steppe sites with snow fences along a precipitation gradient in inner Mongolia. We measured traits including plant height and leaf carbon, nitrogen, and phosphorus concentrations. We incorporated intraspecific trait variation to quantify the strength of external filters (assembly processes outside the community at a larger spatial scale), the strength of internal filters (assembly processes within the local community), and functional redundancy (the number of species having a similar function to an ecosystem). We applied these assembly rules to explain the changes in biodiversity and productivity in response to changing precipitation. We found that increased rainfall reduced plant carbon (C), nitrogen (N), and phosphorous (P) concentrations, but did not affect plant height. High snowfall increased phosphorous concentration, but did not affect other traits. Latent variable models identified climate (rainfall) and soil nutrient conditions (soil total N and P content) were more important than external filtering processes in predicting species richness. However, external filtering processes were the most important predictor of productivity. More specifically, we found with the increase in steppe productivity, the strength of the external filtering on leaf N increased and on plant height decreased, leading to leaf N converging into a small range but broadening the range of plant height. The internal filters had no significant effects on species richness or productivity. Additionally, we found that low precipitation reduced functional redundancy. We emphasize that intraspecific trait-variation drives plant productivity and richness responses to precipitation changes by regulating community assemblage. Our finding also underlines the importance to separate the contributions of different functional traits in regulating the responses of ecosystem structure and function to climate changes.
学科主题Ecology
出版地HOBOKEN
WOS关键词PLANT FUNCTIONAL TRAITS ; DRYLAND ECOSYSTEMS ; WATER AVAILABILITY ; SNOW DEPTH ; VARIABILITY ; REDUNDANCY ; PLASTICITY ; DIVERSITY ; GRADIENT ; NITROGEN
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
语种英语
WOS记录号WOS:000689453800035
出版者WILEY
资助机构Chinese National Key Development Program for Basic Research [2019YFA0607302, 2017YFC0503900] ; National Natural Science Foundation of China [31700420, 31670478, 31988102]
源URL[http://ir.ibcas.ac.cn/handle/2S10CLM1/26711]  
专题植被与环境变化国家重点实验室
作者单位1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
2.East China Normal Univ, Sch Ecol & Environm Sci, Shanghai 200241, Peoples R China
3.Georgia Inst Technol, Sch Biol, 310 Ferst Dr, Atlanta, GA 30332 USA
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Deng, Meifeng,Liu, Weixing,Li, Ping,et al. Intraspecific trait variation drives grassland species richness and productivity under changing precipitation[J]. ECOSPHERE,2021,12(8).
APA Deng, Meifeng.,Liu, Weixing.,Li, Ping.,Jiang, Lin.,Li, Shaopeng.,...&Liu, Lingli.(2021).Intraspecific trait variation drives grassland species richness and productivity under changing precipitation.ECOSPHERE,12(8).
MLA Deng, Meifeng,et al."Intraspecific trait variation drives grassland species richness and productivity under changing precipitation".ECOSPHERE 12.8(2021).

入库方式： OAI收割

来源：植物研究所

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