ChampagnePerroudDumontEtAl2018

Référence

Champagne, E., Perroud, L., Dumont, A., Tremblay, J.-P., Cote, S.D. (2018) Neighbouring plants and perception of predation risk modulate winter browsing by white-tailed deer (Odocoileus virginianus). Canadian Journal of Zoology, 96(2):117-125. (Scopus )

Résumé

The presence of neighbouring plants and predation risk can affect trophic interactions between plants and herbivores. We hypothesized that the relative preference for neighbouring species would determine winter herbivory and that predation risk would modulate browsing pressure. We tested these hypotheses using feeding trials in two regions with high white-tailed deer (Odocoileus virginianus (Zimmermann, 1780)) densities: Outaouais and Anticosti Island (Quebec, Canada). In each, we selected a species of interest and compared browsing rates and time spent foraging with neighbours relatively preferred or avoided. In a subexperiment, we included coyote (Canis latrans Say, 1823) urine to test for threat-sensitive foraging and interactions with neighbour effects. In Outaouais, time spent foraging on the focal species was reduced by the presence of potentially avoided neighbours and deer reduced browsing with increased perceived predation risk. On Anticosti, browsing rates on the focal species increased with avoided neighbours, with no effect of the predator urine. Anticosti deer have been in a predator-free environment for more than 120 years, likely reducing antipredator behaviours. This study demonstrates both neighbour effects and threatsensitive foraging, phenomena that could interact and thus would benefit from being studied together to better represent trophic interactions in natural environments. © 2018, Canadian Science Publishing. All rights reserved.

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@ARTICLE { ChampagnePerroudDumontEtAl2018,
    AUTHOR = { Champagne, E. and Perroud, L. and Dumont, A. and Tremblay, J.-P. and Cote, S.D. },
    TITLE = { Neighbouring plants and perception of predation risk modulate winter browsing by white-tailed deer (Odocoileus virginianus) },
    JOURNAL = { Canadian Journal of Zoology },
    YEAR = { 2018 },
    VOLUME = { 96 },
    NUMBER = { 2 },
    PAGES = { 117-125 },
    NOTE = { cited By 0 },
    ABSTRACT = { The presence of neighbouring plants and predation risk can affect trophic interactions between plants and herbivores. We hypothesized that the relative preference for neighbouring species would determine winter herbivory and that predation risk would modulate browsing pressure. We tested these hypotheses using feeding trials in two regions with high white-tailed deer (Odocoileus virginianus (Zimmermann, 1780)) densities: Outaouais and Anticosti Island (Quebec, Canada). In each, we selected a species of interest and compared browsing rates and time spent foraging with neighbours relatively preferred or avoided. In a subexperiment, we included coyote (Canis latrans Say, 1823) urine to test for threat-sensitive foraging and interactions with neighbour effects. In Outaouais, time spent foraging on the focal species was reduced by the presence of potentially avoided neighbours and deer reduced browsing with increased perceived predation risk. On Anticosti, browsing rates on the focal species increased with avoided neighbours, with no effect of the predator urine. Anticosti deer have been in a predator-free environment for more than 120 years, likely reducing antipredator behaviours. This study demonstrates both neighbour effects and threatsensitive foraging, phenomena that could interact and thus would benefit from being studied together to better represent trophic interactions in natural environments. © 2018, Canadian Science Publishing. All rights reserved. },
    AFFILIATION = { Département de biologie, Centre d’études nordiques, CRSNG en aménagement intégré des ressources de l’île d’Anticosti, Université Laval, Québec, QC, Canada; Centre d’étude de la forêt, Université Laval, Québec, QC, Canada; Département d’Écologie-Évolution, Université de Bourgogne, Dijon, France; Ministère des Forêts, de la Faune et des Parcs, Gatineau, QC, Canada },
    AUTHOR_KEYWORDS = { Associational effects; Associational resistance; Odocoileus virginianus; Vigilance; White-tailed deer },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1139/cjz-2017-0063 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85041860760&doi=10.1139%2fcjz-2017-0063&partnerID=40&md5=8162fe764df2f819f2e1b9edefd2b1cc },
}

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