干旱区生态环境知识资源中心(Arid): Dominant plant facilitation can generate indirect competition in a South-American desert plant community

Arid

DOI	10.1111/jvs.13024
	Dominant plant facilitation can generate indirect competition in a South-American desert plant community
	Sotomayor, Diego A.; Filazzola, Alessandro; Lortie, Christopher J.
通讯作者	Sotomayor, DA (corresponding author), Univ Nacl Agr La Molina, Dept Ingn Ambiental, Av La Molina S-N, Lima, Peru.
来源期刊	JOURNAL OF VEGETATION SCIENCE
ISSN	1100-9233
EISSN	1654-1103
出版年	2021
卷号	32 期号:2
英文摘要	Aims Desert dominant plants commonly facilitate plant communities within their canopies. Although substantial research has examined the direct consequences of this effect, a mechanistic understanding of indirect effects mediated via beneficiary plants is still relatively limited. We tested the hypothesis that the net positive outcome of dominant plants on beneficiaries extends to a series of interactions including indirect competition or facilitation. To test this hypothesis, we aggregated two years of field surveys with a manipulative experiment. Location Atiquipa, Southern Peru. Methods We surveyed the understorey plant community of the dominant tree Caesalpinia spinosa and compared it to that of open microsites. Field manipulations included removal of plant neighbourhoods of two target annual species in the understorey of the dominant plant Caesalpinia spinosa and adjacent open microsites. In the surveys, we measured plant density, and in the removal experiment, plant height, fruit set, and biomass of the targets. Results In the surveys, density of Fuertisimalva peruviana, a target species, was negatively dependent on understorey neighbours' density. Neighbourhood removal did not affect fruit set or biomass of Fuertisimalva peruviana in tree understories or open microsites. Neighbourhood removal around Plantago limensis increased biomass, plant height and fruit set, and changed the effect of the dominant tree from positive to negative for biomass. Conclusions Understorey plant neighbours can mediate the direct effects of dominant plants in deserts, but responses to these indirect effects can be species-specific. The facilitative effects of dominant plants represent key coexistence mechanisms because they reduce stress and generate extended series of interactions not necessarily present in the open.
英文关键词	coexistence indirect effects nurse plant positive interactions southern Peru species specificity
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000645256100030
WOS关键词	SPECIES INTERACTIONS ; SHRUB FACILITATION ; MODEL ; COEXISTENCE ; CANOPY ; MICROHABITAT ; RECRUITMENT ; GRADIENT ; TRAITS ; DRIVER
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351034
作者单位	[Sotomayor, Diego A.; Lortie, Christopher J.] York Univ, Dept Geog, Toronto, ON, Canada; [Sotomayor, Diego A.] Univ Nacl Agr La Molina, Dept Ingn Ambiental, Av La Molina S-N, Lima, Peru; [Filazzola, Alessandro; Lortie, Christopher J.] York Univ, Dept Biol, Toronto, ON, Canada; [Lortie, Christopher J.] UCSB Santa Barbara, Natl Ctr Ecol Anal & Synth, Santa Barbara, CA USA
推荐引用方式 GB/T 7714	Sotomayor, Diego A.,Filazzola, Alessandro,Lortie, Christopher J.. Dominant plant facilitation can generate indirect competition in a South-American desert plant community[J],2021,32(2).
APA	Sotomayor, Diego A.,Filazzola, Alessandro,&Lortie, Christopher J..(2021).Dominant plant facilitation can generate indirect competition in a South-American desert plant community.JOURNAL OF VEGETATION SCIENCE,32(2).
MLA	Sotomayor, Diego A.,et al."Dominant plant facilitation can generate indirect competition in a South-American desert plant community".JOURNAL OF VEGETATION SCIENCE 32.2(2021).