气候变化领域集成服务门户(CCPortal): Extending trait dispersion across trophic levels: Predator assemblages act as top-down filters on prey communities

CCPortal

DOI	10.1002/ecy.4320
	Extending trait dispersion across trophic levels: Predator assemblages act as top-down filters on prey communities
	Gross, Collin P.; Stachowicz, John J.
发表日期	2024
ISSN	0012-9658
EISSN	1939-9170
英文摘要	Studies of community assembly typically focus on the effects of abiotic environmental filters and stabilizing competition on functional trait dispersion within single trophic levels. Predation is a well-known driver of community diversity and composition, yet the role of functionally diverse predator communities in filtering prey community traits has received less attention. We examined functionally diverse communities of predators (fishes) and prey (epifaunal crustaceans) in eelgrass (Zostera marina) beds in two northern California estuaries to evaluate the filtering effects of predator traits on community assembly and how filters acting on predators influence their ability to mediate prey community assembly. Fish traits related to bottom orientation were correlated with more clustered epifauna communities, and epifauna were generally overdispersed while fishes were clustered, suggesting prey may be pushed to disparate areas of trait space to avoid capture by benthic sit-and-wait predators. We also found correlations between the trait dispersions of predator and prey communities that strengthened after accounting for the effects of habitat filters on predator dispersion, suggesting that habitat filtering effects on predator species pools may hinder their ability to affect prey community assembly. Our results present compelling observational evidence that specific predator traits have measurable impacts on the community assembly of prey, inviting experimental tests of predator trait means on community assembly and explicit comparisons of how the relative effects of habitat filters and intraguild competition on predators impact their ability to affect prey community assembly. Integrating our understanding of traits at multiple trophic levels can help us better predict the impacts of community composition on food web dynamics as regional species pools shift with climate change and anthropogenic introductions.
英文关键词	community assembly; eelgrass; epifauna; fishes; functional traits; trait dispersion
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:001227429800001
来源期刊	ECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/301313
作者单位	University of California System; University of California Davis; Stanford University
推荐引用方式 GB/T 7714	Gross, Collin P.,Stachowicz, John J.. Extending trait dispersion across trophic levels: Predator assemblages act as top-down filters on prey communities[J],2024.
APA	Gross, Collin P.,&Stachowicz, John J..(2024).Extending trait dispersion across trophic levels: Predator assemblages act as top-down filters on prey communities.ECOLOGY.
MLA	Gross, Collin P.,et al."Extending trait dispersion across trophic levels: Predator assemblages act as top-down filters on prey communities".ECOLOGY (2024).