9 mars 2017
Fear Mediates Trophic Cascades : Nonconsumptive Effects of Predators Drive Aquatic Ecosystem Function [The American Naturalist]
Keywords : antipredatory behavior, damselfly, trait-mediated indirect interactions (TMIIs), predator cues, terrestrial predator, top-down effects.
Predators control prey populations and influence communities and the functioning of ecosystems through a combination of consumptive and nonconsumptive effects. These effects can be locally confined to one ecosystem but can also be extended to neighboring ecosystems. In this study, we investigated the nonconsumptive effects of terrestrial avian predators on the communities of aquatic invertebrates inhabiting bromeliads and on the functioning of these natural ecosystems.(...)