干旱区生态环境知识资源中心(Arid): Facilitation with a grain of salt: reduced pollinator visitation is an indirect cost of association with the foundation species creosote bush (Larrea tridentata)

Arid

DOI	10.1002/ajb2.1533
	Facilitation with a grain of salt: reduced pollinator visitation is an indirect cost of association with the foundation species creosote bush (Larrea tridentata)
	Braun, Jenna; Lortie, Christopher J.
通讯作者	Braun, J
来源期刊	AMERICAN JOURNAL OF BOTANY
ISSN	0002-9122
EISSN	1537-2197
出版年	2020
卷号	107 期号:10 页码:1342-1354
英文摘要	Premise In arid ecosystems, shrub facilitation is a critical process driving plant community structure and assembly, often resulting in increased densities of annual plants beneath shrub canopies. Pollinator-mediated interactions can have fitness consequences for both plant interactors but are largely unexplored as an indirect consequence of direct shrub-annual facilitation. Methods We tested the capacity of the geographically widespread creosote bush (Larrea tridentata) to influence pollinator visitation to its annual understory during its phenological shift into spring flowering. We used small video cameras to record pollinator visitation and foraging behavior on potted transplants of a representative flowering annual. We concurrently evaluatedL. tridentata's positive role as a foundation plant in this system by measuring the associated plant and arthropod communities and deploying data loggers to measure understory microclimates. Results Pollinator visitation to the flowering annual desert dandelion,Malacothrix glabrata, was lower when beneath the canopy ofL. tridentata, and further declined throughout the study site asL. tridentataentered full bloom. We confirmed the role ofL. tridentataas a foundation species in this system through its concurrent, positive effects on annual plant cover (a proxy for biomass), the abundance and richness of the understory arthropod community and its ability to create stable microclimates. Conclusions Direct and indirect shrub effects on other species function simultaneously to shift net outcomes even within predominantly net positive facilitation complexes.
英文关键词	arid environments community assembly competition Mojave Desert Malacothrix glabrata net-interactions phenology pollinator-mediated interactions
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000572670900001
WOS关键词	DWELLING ARTHROPOD DIVERSITY ; ANNUAL PLANT ; CONCEPTUAL-FRAMEWORK ; SHRUB INTERACTIONS ; BEES HYMENOPTERA ; INVASIVE PLANTS ; SOLITARY BEES ; PATCH SIZE ; COMMUNITIES ; COMPETITION
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326504
作者单位	[Braun, Jenna; Lortie, Christopher J.] York Univ, Dept Biol, 4700 Keele St, Toronto, ON, Canada; [Lortie, Christopher J.] Natl Ctr Ecol Anal & Synth, 735 State St, Santa Barbara, CA 93101 USA
推荐引用方式 GB/T 7714	Braun, Jenna,Lortie, Christopher J.. Facilitation with a grain of salt: reduced pollinator visitation is an indirect cost of association with the foundation species creosote bush (Larrea tridentata)[J],2020,107(10):1342-1354.
APA	Braun, Jenna,&Lortie, Christopher J..(2020).Facilitation with a grain of salt: reduced pollinator visitation is an indirect cost of association with the foundation species creosote bush (Larrea tridentata).AMERICAN JOURNAL OF BOTANY,107(10),1342-1354.
MLA	Braun, Jenna,et al."Facilitation with a grain of salt: reduced pollinator visitation is an indirect cost of association with the foundation species creosote bush (Larrea tridentata)".AMERICAN JOURNAL OF BOTANY 107.10(2020):1342-1354.