DOI: 10.1111/ele.12396
Scopus记录号: 2-s2.0-84934177761
论文题名: Bears benefit plants via a cascade with both antagonistic and mutualistic interactions
作者: Grinath J.B. ; Inouye B.D. ; Underwood N.
刊名: Ecology Letters
ISSN: 1461023X
EISSN: 1461-0248
出版年: 2015
卷: 18, 期: 2 起始页码: 164
结束页码: 173
语种: 英语
英文关键词: Ursus americanus
; Chrysothamnus viscidiflorus
; Ecological network
; Food web
; Honeydew mutualisms
; Indirect interactions
; Trophic cascades
Scopus关键词: Arthropoda
; Chrysothamnus viscidiflorus
; Cucumis melo var. inodorus
; Formicidae
; Ursus americanus
; animal
; ant
; arthropod
; bear
; food chain
; herbivory
; physiology
; population dynamics
; predation
; Animals
; Ants
; Arthropods
; Food Chain
; Herbivory
; Population Dynamics
; Predatory Behavior
; Ursidae
英文摘要: Predators can influence primary producers by generating cascades of effects in ecological webs. These effects are often non-intuitive, going undetected because they involve many links and different types of species interactions. Particularly, little is understood about how antagonistic (negative) and mutualistic (positive) interactions combine to create cascades. Here, we show that black bears can benefit plants by consuming ants. The ants are mutualists of herbivores and protect herbivores from other arthropod predators. We found that plants near bear-damaged ant nests had greater reproduction than those near undamaged nests, due to weaker ant protection for herbivores, which allowed herbivore suppression by arthropod predators. Our results highlight the need to integrate mutualisms into trophic cascade theory, which is based primarily on antagonistic relationships. Predators are often conservation targets, and our results suggest that bears and other predators should be managed with the understanding that they can influence primary producers through many paths. © 2014 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/107949
Appears in Collections: 气候减缓与适应
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作者单位: Biological Science Florida State University, Tallahassee, FL, United States; Rocky Mountain Biological Laboratory, P.O. Box 519, Crested Butte, CO, United States
Recommended Citation:
Grinath J.B.,Inouye B.D.,Underwood N.. Bears benefit plants via a cascade with both antagonistic and mutualistic interactions[J]. Ecology Letters,2015-01-01,18(2)