DOI: 10.1111/gcb.12639
论文题名: Climate change enhances the negative effects of predation risk on an intermediate consumer
作者: Miller L.P. ; Matassa C.M. ; Trussell G.C.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2014
卷: 20, 期: 12 起始页码: 3834
结束页码: 3844
语种: 英语
英文关键词: Nucella lapillus
; Carcinus maenas
; Climate change
; Foraging
; Predation risk
; Predator-prey
; Species interactions
; Temperature
Scopus关键词: Carcinus maenas
; Nucella lapillus
; analysis of variance
; animal
; biological model
; bivalve
; Brachyura
; climate change
; food chain
; physiology
; predation
; snail
; species difference
; temperature
; wetland
; Analysis of Variance
; Animals
; Bivalvia
; Brachyura
; Climate Change
; Food Chain
; Models, Biological
; Predatory Behavior
; Snails
; Species Specificity
; Temperature
; Wetlands
英文摘要: Predators are a major source of stress in natural systems because their prey must balance the benefits of feeding with the risk of being eaten. Although this 'fear' of being eaten often drives the organization and dynamics of many natural systems, we know little about how such risk effects will be altered by climate change. Here, we examined the interactive consequences of predator avoidance and projected climate warming in a three-level rocky intertidal food chain. We found that both predation risk and increased air and sea temperatures suppressed the foraging of prey in the middle trophic level, suggesting that warming may further enhance the top-down control of predators on communities. Prey growth efficiency, which measures the efficiency of energy transfer between trophic levels, became negative when prey were subjected to predation risk and warming. Thus, the combined effects of these stressors may represent an important tipping point for individual fitness and the efficiency of energy transfer in natural food chains. In contrast, we detected no adverse effects of warming on the top predator and the basal resources. Hence, the consequences of projected warming may be particularly challenging for intermediate consumers residing in food chains where risk dominates predator-prey interactions. © 2014 John Wiley & Sons Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/62057
Appears in Collections: 影响、适应和脆弱性
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作者单位: Department of Marine and Environmental Sciences and the Marine Science Center, Northeastern University, 430 Nahant Road, Nahant, MA, United States; Hopkins Marine Station, Stanford University, 120 Ocean View Boulevard, Pacific Grove, CA, United States
Recommended Citation:
Miller L.P.,Matassa C.M.,Trussell G.C.. Climate change enhances the negative effects of predation risk on an intermediate consumer[J]. Global Change Biology,2014-01-01,20(12)