干旱区生态环境知识资源中心(Arid): Interactions among intrinsic water-use efficiency and climate influence growth and flowering in a common desert shrub

Arid

DOI	10.1007/s00442-020-04825-3
	Interactions among intrinsic water-use efficiency and climate influence growth and flowering in a common desert shrub
	Driscoll, Avery W.; Bitter, Nicholas Q.; Ehleringer, James R.
通讯作者	Driscoll, AW (corresponding author), Univ Utah, Sch Biol Sci, 257 S 1400 E, Salt Lake City, UT 84112 USA.
来源期刊	OECOLOGIA
ISSN	0029-8549
EISSN	1432-1939
出版年	2021
英文摘要	Plants make leaf-level trade-offs between photosynthetic carbon assimilation and water loss, and the optimal balance between the two is dependent, in part, on water availability. Conservative water-use strategies, in which minimizing water loss is prioritized over assimilating carbon, tend to be favored in arid environments, while aggressive water-use strategies, in which carbon assimilation is prioritized over water conservation, are often favored in mesic environments. When derived from foliar carbon isotope ratios, intrinsic water-use efficiency (iWUE) serves as a seasonally integrated indicator of the balance of carbon assimilation to water loss at the leaf level. Here, we used a multi-decadal record of annual iWUE, growth, and flowering from a single population of Encelia farinosa in the Mojave Desert to evaluate the effect of iWUE on plant performance across interannual fluctuations in water availability. We identified substantial variability in iWUE among individuals and found that iWUE interacted with water availability to significantly influence growth and flowering. However, the relationships between iWUE, water availability, and plant performance did not universally suggest that conservative water-use strategies were advantageous in dry years or that aggressive strategies were advantageous in wet years. iWUE was positively related to the odds of growth regardless of water availability and to the odds of flowering in dry years, but negatively related to growth rates in dry years. In addition, we found that leaf nitrogen content affected interannual plant performance and that an individual's iWUE plasticity in response to fluctuations in aridity was negatively related to early life drought survival and growth.
英文关键词	iWUE Carbon isotopes Plasticity Leaf nitrogen Mojave Desert
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000604205100003
WOS关键词	CARBON-ISOTOPE DISCRIMINATION ; PHENOTYPIC PLASTICITY ; ATMOSPHERIC DEMAND ; ENCELIA-FARINOSA ; USE STRATEGIES ; DROUGHT ; RESPONSES ; TRAITS ; COMPETITION ; ADAPTATION
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352415
作者单位	[Driscoll, Avery W.; Bitter, Nicholas Q.; Ehleringer, James R.] Univ Utah, Sch Biol Sci, 257 S 1400 E, Salt Lake City, UT 84112 USA
推荐引用方式 GB/T 7714	Driscoll, Avery W.,Bitter, Nicholas Q.,Ehleringer, James R.. Interactions among intrinsic water-use efficiency and climate influence growth and flowering in a common desert shrub[J],2021.
APA	Driscoll, Avery W.,Bitter, Nicholas Q.,&Ehleringer, James R..(2021).Interactions among intrinsic water-use efficiency and climate influence growth and flowering in a common desert shrub.OECOLOGIA.
MLA	Driscoll, Avery W.,et al."Interactions among intrinsic water-use efficiency and climate influence growth and flowering in a common desert shrub".OECOLOGIA (2021).