A mechanistic model of functional response provides new insights into indirect interactions among arctic tundra prey ...

• Main Authors: Beardsell, Andréanne, Gravel, Dominique, Clermont, Jeanne, Berteaux, Dominique, Gauthier, Gilles, Bêty, Joël
• Format: Dataset
• Language: English
• Published: Dryad 2022
• Subjects: FOS Biological sciences; Arctic; Berteaux; Arctic Fox; Tundra
• Online Access: https://dx.doi.org/10.5061/dryad.8w9ghx3pf; https://datadryad.org/stash/dataset/doi:10.5061/dryad.8w9ghx3pf

Prey handling processes are considered a dominant mechanism leading to short-term positive indirect effects between prey that share a predator. However, a growing body of research indicates that predators are not necessarily limited by such processes in the wild. Density-dependent changes in predator foraging behavior can also generate positive indirect effects but they are rarely included as explicit functions of prey densities in functional response models. With the aim of untangling proximate mechanisms of species interactions in natural communities and improving our ability to quantify interaction strength, we extended the multi-prey version of the Holling disk equation by including density-dependent changes in predator foraging behavior. Our model, based on species traits and behavior, was inspired by the vertebrate community of the arctic tundra, where the main predator (the arctic fox) is an active forager feeding primarily on cyclic small rodent (lemming) and eggs of various tundra-nesting bird ... : The datasets (fox_daily_activity and LPS_Densities_NestingSuccess) provided here contain raw data used in the models presented in the article "A mechanistic model of functional response provides new insights into indirect interactions among arctic tundra prey". Refer to the article for more details on each analysis. Arctic fox GPS data are available through the Movebank Data Repository at Berteaux, D. 2020, Arctic fox Bylot-GPS tracking, Movebank Study ID 1241071371. ...