DOI: 10.1111/ele.12777
Scopus记录号: 2-s2.0-85019031244
论文题名: Quantifying predator dependence in the functional response of generalist predators
作者: Novak M. ; Wolf C. ; Coblentz K.E. ; Shepard I.D.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2017
卷: 20, 期: 6 起始页码: 761
结束页码: 769
语种: 英语
英文关键词: Beddington–DeAngelis functional response
; consumer dependence
; food webs
; interaction modification
; interaction strengths
; mutual predator effects
; Nucella whelks
; per capita attack rates
; prey preference
Scopus关键词: Nucella
; animal
; food chain
; population dynamics
; predation
; Animals
; Food Chain
; Population Dynamics
; Predatory Behavior
英文摘要: A long-standing debate concerns how functional responses are best described. Theory suggests that ratio dependence is consistent with many food web patterns left unexplained by the simplest prey-dependent models. However, for logistical reasons, ratio dependence and predator dependence more generally have seen infrequent empirical evaluation and then only so in specialist predators, which are rare in nature. Here we develop an approach to simultaneously estimate the prey-specific attack rates and predator-specific interference (facilitation) rates of predators interacting with arbitrary numbers of prey and predator species in the field. We apply the approach to surveys and experiments involving two intertidal whelks and their full suite of potential prey. Our study provides strong evidence for predator dependence that is poorly described by the ratio dependent model over manipulated and natural ranges of species abundances. It also indicates how, for generalist predators, even the qualitative nature of predator dependence can be prey-specific. © 2017 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/107612
Appears in Collections: 气候减缓与适应
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作者单位: Department of Integrative Biology, Oregon State University, 3029 Cordley Hall, Corvallis, OR, United States; Department Statistics, Oregon State University, Corvallis, OR, United States; School of Biology and Ecology, University of Maine, Orono, ME, United States
Recommended Citation:
Novak M.,Wolf C.,Coblentz K.E.,et al. Quantifying predator dependence in the functional response of generalist predators[J]. Ecology Letters,2017-01-01,20(6)