Impact de la densité de cerfs de Virginie sur les communautés d'insectes de l'île d'Anticosti

Authors: Brousseau, Pierre-Marc
Advisor: Cloutier, ConradHébert, Christian
Abstract: Deer overabundances can be detrimental to forest regeneration and can modify vegetal communities and consequently, have an indirect impact on many arthropod groups. In this study, we used a replicated exclosure system with three controlled white-tailed deer densities and an uncontrolled high deer density on Anticosti Island. The impact of deer density on the communities of four insect groups following a gradient of association with plants was studied alongside with the communities of herbivorous arthropods, pollinators and plant dwelling predators associated with three plant species whose abundance varies with deer density. The results revealed that arthropod groups more closely associated to plants were more strongly affected by deer density. Furthermore, the impact was stronger if the abundance of the plant to which they are closely associated decreased with deer density. Overall, insects appeared to be highly resilient to deer overabundance.
Document Type: Mémoire de maîtrise
Issue Date: 2011
Open Access Date: 17 April 2018
Grantor: Université Laval
Collection:Thèses et mémoires

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