干旱区生态环境知识资源中心(Arid): Plant size is related to biomass partitioning and stress resistance in water-limited annual plant communities

Arid

DOI	10.1016/j.jaridenv.2019.04.006
	Plant size is related to biomass partitioning and stress resistance in water-limited annual plant communities
	Dovrat, Guy 1; Meron, Ehud 2,3; Shachak, Moshe 4; Golodets, Carly 1; Osem, Yagil 5
通讯作者	Dovrat, Guy
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2019
卷号	165 页码:1-9
英文摘要	Plant functional traits are used increasingly for linking environmental conditions, community structure and ecosystem function. Traits associated with rapid resource capture may come at the expense of those related to stress resistance. In annual plants, such a tradeoff may be reflected through plant size (biomass) vs. biomass partitioning patterns, as the former represents resource capture rate while the latter represents reorganization to cope with resource stress. In a water-limited annual plant community we investigated: 1) the effects of water and nitrogen availability on plant size and biomass partitioning, i.e., biomass partitioning between organs (root to shoot ratio, R/S, and reproductive effort, Rep/Veg), and biomass partitioning in space (specific leaf area, SLA), 2) the relationship between plant size and biomass partitioning at both the interspecific and intraspecific level, and 3) the relationships between plant size and biomass partitioning strategy and stress resistance. Eight key species varying in their natural size range were grown under variable water and nitrogen availability and their size and biomass partitioning were monitored throughout their growth and at fixed phenological phases. In all species, reduced water and/or nitrogen availability was associated with smaller size, increased R/S, and decreased SLA while Rep/Veg remained constant. At the intraspecific level, plant size was negatively related to R/S and positively related to SLA. At the interspecific level, no relationship was found between size or stress resistance and any of the biomass-partitioning traits or their plasticity. However, species size was negatively related to stress resistance. This tradeoff between species size and stress resistance emerges as a consistent property of fundamental importance in shaping annual plant communities along resource gradients.
英文关键词	Annual plants Functional diversity Functional traits Plant size Root-shoot ratio Reproductive effort Biomass partitioning Specific leaf area
类型	Article
语种	英语
国家	Israel
收录类别	SCI-E
WOS记录号	WOS:000469155300001
WOS关键词	MEDITERRANEAN POPULATIONS ; FUNCTIONAL DIVERSITY ; GRAZING EXCLUSION ; SHOOT RATIOS ; ALLOCATION ; ECOSYSTEM ; NITROGEN ; TRAITS ; DESERT ; GROWTH
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	Ben-Gurion University of the Negev
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216748
作者单位	1.Agr Res Org, Newe Yaar Res Ctr, Dept Nat Resources, IL-30095 Ramat Yishay, Israel; 2.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Dept Solar Energy & Environm Phys, Sede Boqer Campus, IL-84990 Sede Boqer, Israel; 3.Ben Gurion Univ Negev, Phys Dept, IL-84105 Beer Sheva, Israel; 4.Ben Gurion Univ Negev, Blaustein Inst Desert Res, Mitrani Dept Desert Ecol, Sede Boqer Campus, IL-84990 Sede Boqer, Israel; 5.Agr Res Org, Volcani Ctr, Dept Nat Resources, IL-50250 Bet Dagan, Israel
推荐引用方式 GB/T 7714	Dovrat, Guy,Meron, Ehud,Shachak, Moshe,et al. Plant size is related to biomass partitioning and stress resistance in water-limited annual plant communities[J]. Ben-Gurion University of the Negev,2019,165:1-9.
APA	Dovrat, Guy,Meron, Ehud,Shachak, Moshe,Golodets, Carly,&Osem, Yagil.(2019).Plant size is related to biomass partitioning and stress resistance in water-limited annual plant communities.JOURNAL OF ARID ENVIRONMENTS,165,1-9.
MLA	Dovrat, Guy,et al."Plant size is related to biomass partitioning and stress resistance in water-limited annual plant communities".JOURNAL OF ARID ENVIRONMENTS 165(2019):1-9.