DOI: 10.1111/ele.12605
Scopus记录号: 2-s2.0-84964337009
论文题名: On the context-dependent scaling of consumer feeding rates
作者: Barrios-O'Neill D. ; Kelly R. ; Dick J.T.A. ; Ricciardi A. ; Macisaac H.J. ; Emmerson M.C.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2016
卷: 19, 期: 6 起始页码: 668
结束页码: 678
语种: 英语
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
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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/107752
Appears in Collections: 气候减缓与适应
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作者单位: Institute for Global Food Security, School of Biological Sciences, Queen's University Belfast, 97 Lisburn Road, Belfast, Ireland; Redpath Museum, McGill University, 859 Sherbrooke Street West, Montreal, QC, Canada; Great Lakes Institute for Environmental Research, University of Windsor, Windsor, ON, Canada
Recommended Citation:
Barrios-O'Neill D.,Kelly R.,Dick J.T.A.,et al. On the context-dependent scaling of consumer feeding rates[J]. Ecology Letters,2016-01-01,19(6)