气候变化领域集成服务门户(CCPortal): Predation risk influences food-web structure by constraining species diet choice

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DOI	10.1111/ele.13334
	Predation risk influences food-web structure by constraining species diet choice
	Ho H.-C.; Tylianakis J.M.; Zheng J.X.; Pawar S.
发表日期	2019
ISSN	1461023X
卷号	22 期号:11
英文摘要	The foraging behaviour of species determines their diet and, therefore, also emergent food-web structure. Optimal foraging theory (OFT) has previously been applied to understand the emergence of food-web structure through a consumer-centric consideration of diet choice. However, the resource-centric viewpoint, where species adjust their behaviour to reduce the risk of predation, has not been considered. We develop a mechanistic model that merges metabolic theory with OFT to incorporate the effect of predation risk on diet choice to assemble food webs. This ‘predation-risk-compromise’ (PR) model better captures the nestedness and modularity of empirical food webs relative to the classical optimal foraging model. Specifically, compared with optimal foraging alone, risk-mitigated foraging leads to more-nested but less-modular webs by broadening the diet of consumers at intermediate trophic levels. Thus, predation risk significantly affects food-web structure by constraining species’ ability to forage optimally, and needs to be considered in future work. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Diet choice; food-web structure; food-web topology; metabolic theory; modularity; nestedness; optimal foraging; predation risk
语种	英语
scopus关键词	animal; biological model; diet; food chain; predation; Animals; Diet; Food Chain; Models, Biological; Predatory Behavior
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121026
作者单位	Department of Life Sciences, Imperial College London, Silwood Park Campus, Ascot, SL5 7PY, United Kingdom; School of Biological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand; Department of Electrical and Electronic Engineering, Imperial College London, South Kensington Campus, London, SW7 2AZ, United Kingdom
推荐引用方式 GB/T 7714	Ho H.-C.,Tylianakis J.M.,Zheng J.X.,et al. Predation risk influences food-web structure by constraining species diet choice[J],2019,22(11).
APA	Ho H.-C.,Tylianakis J.M.,Zheng J.X.,&Pawar S..(2019).Predation risk influences food-web structure by constraining species diet choice.Ecology Letters,22(11).
MLA	Ho H.-C.,et al."Predation risk influences food-web structure by constraining species diet choice".Ecology Letters 22.11(2019).