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Title
Behavioural adjustments of predators and prey to wind speed in the boreal forest
Author(s)
Studd, E. K.; Peers, M. J. L.; Menzies, A. K.; Derbyshire, R.; Majchrzak, Y. N.; Seguin, J. L.; Murray, D. L.; Dantzer, B.; Lane, J. E.; McAdam, A. G.; Humphries, M. M.; Boutin, S.
Published
2022
Publisher
Oecologia
Published Version DOI
https://doi.org/10.1007/s00442-022-05266-w
Abstract
Wind speed can have multifaceted effects on organisms including altering thermoregulation, locomotion, and sensory reception. While forest cover can substantially reduce wind speed at ground level, it is not known if animals living in forests show any behavioural responses to changes in wind speed. Here, we explored how three boreal forest mammals, a predator and two prey, altered their behaviour in response to average daily wind speeds during winter. We collected accelerometer data to determine wind speed effects on activity patterns and kill rates of free-ranging red squirrels (n = 144), snowshoe hares (n = 101), and Canada lynx (n = 27) in Kluane, Yukon from 2015 to 2018. All 3 species responded to increasing wind speeds by changing the time they were active, but effects were strongest in hares, which reduced daily activity by 25%, and lynx, which increased daily activity by 25%. Lynx also increased the number of feeding events by 40% on windy days. These results highlight that wind speed is an important abiotic variable that can affect behaviour, even in forested environments.
Keywords
behavioral responses; environmental variation; predator detection; predator-prey; terrestrial ecoregions; thermoregulation
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PUB35766