DOI: 10.1111/ele.12818
Scopus记录号: 2-s2.0-85026627822
论文题名: Rainfall variability and fine-scale life history tradeoffs help drive niche partitioning in a desert annual plant community
作者: Shriver R.K.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2017
卷: 20, 期: 10 起始页码: 1231
结束页码: 1241
语种: 英语
英文关键词: Comparative demography
; comparative ecophysiology
; intraannual variability
; niche partitioning
; resource pulses
; resource variability
; species coexistence
; tradeoffs
Scopus关键词: rain
; climate change
; desert climate
; ecosystem
; plant
; soil
; Climate Change
; Desert Climate
; Ecosystem
; Plants
; Rain
; Soil
英文摘要: Tradeoffs have long been an essential part of the canon explaining the maintenance of species diversity. Despite the intuitive appeal of the idea that no species can be a master of all trades, there has been a scarcity of linked demographic and physiological evidence to support the role of resource use tradeoffs in natural systems. Using five species of Chihuahuan desert summer annual plants, I show that demographic tradeoffs driven by short-term soil moisture variation act as a mechanism to allow multiple species to partition a limiting resource. Specifically, by achieving highest fitness in either rainfall pulse or interpulse periods, variability reduces fitness differences through time that could promote coexistence on a limiting resource. Differences in fitness are explained in part by the response of photosynthesis to changing soil moisture. My results suggest that increasing weather variability, as predicted under climate change, could increase the opportunity for coexistence in this community. © 2017 John Wiley & Sons Ltd/CNRS Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107563
Appears in Collections: 气候减缓与适应
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作者单位: University Program in Ecology, Duke University, Durham, NC, United States
Recommended Citation:
Shriver R.K.. Rainfall variability and fine-scale life history tradeoffs help drive niche partitioning in a desert annual plant community[J]. Ecology Letters,2017-01-01,20(10)