A mechanistic model of functional response provides new insights into indirect interactions among arctic tundra prey DOI
Andréanne Beardsell, Dominique Gravel, Jeanne Clermont

et al.

Ecology, Journal Year: 2022, Volume and Issue: 103(8)

Published: April 25, 2022

Prey handling processes are considered a dominant mechanism leading to short-term positive indirect effects between prey that share predator. However, growing body of research indicates predators not necessarily limited by such in the wild. Density-dependent changes predator foraging behavior can also generate but they rarely included as explicit functions densities functional response models. With aim untangling proximate mechanisms species interactions natural communities and improving our ability quantify interaction strength, we extended multi-prey version Holling disk equation including density-dependent behavior. Our model, based on traits behavior, was inspired vertebrate community arctic tundra, where main (the fox) is an active forager feeding primarily cyclic small rodent (lemming) eggs various tundra-nesting bird species. Short-term lemmings birds have been documented over circumpolar Arctic underlying remain poorly understood. We used unique data set, containing high-frequency GPS tracking, accelerometer, behavioral, experimental parameterize 15-year time series nesting success evaluate strength found (1) play minor role system (2) fox daily activity budget distance traveled partly explain predation release observed during lemming peaks. These adjustments with respect density thus appear commonly reported among tundra prey. components little studied deserve more attention improve interactions.

Language: Английский

Predator-mediated interactions through changes in predator home range size can lead to local prey exclusion DOI Open Access
Andréanne Beardsell, Dominique Berteaux, Frédéric Dulude‐de Broin

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 290(2004)

Published: Aug. 9, 2023

The strength of indirect biotic interactions is difficult to quantify in the wild and can alter community composition. To investigate whether presence a prey species affects population growth rate another species, we quantified predator-mediated interaction using multi-prey mechanistic model predation matrix model. Models were parametrized behavioural, demographic experimental data from vertebrate that includes arctic fox (

Language: Английский

Citations

17
A mechanistic model of functional response provides new insights into indirect interactions among arctic tundra prey DOI
Andréanne Beardsell, Dominique Gravel, Jeanne Clermont

et al.

Ecology, Journal Year: 2022, Volume and Issue: 103(8)

Published: April 25, 2022

Prey handling processes are considered a dominant mechanism leading to short-term positive indirect effects between prey that share predator. However, growing body of research indicates predators not necessarily limited by such in the wild. Density-dependent changes predator foraging behavior can also generate but they rarely included as explicit functions densities functional response models. With aim untangling proximate mechanisms species interactions natural communities and improving our ability quantify interaction strength, we extended multi-prey version Holling disk equation including density-dependent behavior. Our model, based on traits behavior, was inspired vertebrate community arctic tundra, where main (the fox) is an active forager feeding primarily cyclic small rodent (lemming) eggs various tundra-nesting bird species. Short-term lemmings birds have been documented over circumpolar Arctic underlying remain poorly understood. We used unique data set, containing high-frequency GPS tracking, accelerometer, behavioral, experimental parameterize 15-year time series nesting success evaluate strength found (1) play minor role system (2) fox daily activity budget distance traveled partly explain predation release observed during lemming peaks. These adjustments with respect density thus appear commonly reported among tundra prey. components little studied deserve more attention improve interactions.

Language: Английский

Citations

15