气候变化领域集成服务门户(CCPortal): On the context-dependent scaling of consumer feeding rates

CCPortal

DOI	10.1111/ele.12605
	On the context-dependent scaling of consumer feeding rates
	Barrios-O'Neill D.; Kelly R.; Dick J.T.A.; Ricciardi A.; Macisaac H.J.; Emmerson M.C.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:6
英文摘要	The stability of consumer-resource systems can depend on the form of feeding interactions (i.e. functional responses). Size-based models predict interactions - and thus stability - based on consumer-resource size ratios. However, little is known about how interaction contexts (e.g. simple or complex habitats) might alter scaling relationships. Addressing this, we experimentally measured interactions between a large size range of aquatic predators (4-6400 mg over 1347 feeding trials) and an invasive prey that transitions among habitats: from the water column (3D interactions) to simple and complex benthic substrates (2D interactions). Simple and complex substrates mediated successive reductions in capture rates - particularly around the unimodal optimum - and promoted prey population stability in model simulations. Many real consumer-resource systems transition between 2D and 3D interactions, and along complexity gradients. Thus, Context-Dependent Scaling (CDS) of feeding interactions could represent an unrecognised aspect of food webs, and quantifying the extent of CDS might enhance predictive ecology. © 2016 John Wiley & Sons Ltd/CNRS.
英文关键词	Body size; Density dependence; Functional response; Habitat complexity; Invasive species; Population stability; Predator-prey dynamics; Scaling; Type II; Type III
学科领域	Amphipoda; animal; biological model; Crustacea; ecosystem; fish; food chain; physiology; population dynamics; predation; Amphipoda; Animals; Crustacea; Ecosystem; Fishes; Food Chain; Models, Biological; Population Dynamics; Predatory Behavior
语种	英语
scopus关键词	Amphipoda; animal; biological model; Crustacea; ecosystem; fish; food chain; physiology; population dynamics; predation; Amphipoda; Animals; Crustacea; Ecosystem; Fishes; Food Chain; Models, Biological; Population Dynamics; 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/118543
作者单位	Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, BT9 7BL, United Kingdom; Redpath Museum, McGill University, 859 Sherbrooke Street West, Montreal, QC H3AOC4, Canada; Great Lakes Institute for Environmental Research, University of Windsor, Windsor, ON N9B 3P4, Canada
推荐引用方式 GB/T 7714	Barrios-O'Neill D.,Kelly R.,Dick J.T.A.,et al. On the context-dependent scaling of consumer feeding rates[J],2016,19(6).
APA	Barrios-O'Neill D.,Kelly R.,Dick J.T.A.,Ricciardi A.,Macisaac H.J.,&Emmerson M.C..(2016).On the context-dependent scaling of consumer feeding rates.Ecology Letters,19(6).
MLA	Barrios-O'Neill D.,et al."On the context-dependent scaling of consumer feeding rates".Ecology Letters 19.6(2016).