title: Accounting for individual behavioural variation in studies of habitat selection.
abstract: A caribou wearing an animal-borne video camera (a) and animal-borne video footage taken from systems deployed on mule deer (Odocoileus hemionus) in north-central Washington state, USA (b-d). When paired with tracking technology, animal-borne video can reveal detailed information about behaviour and environmental features at each location: (b) feeding, (c) vigilant in the open, (d) vigilant in cover, (e) resting in the open. Accordingly, animal-borne video systems should allow for analyses of habitat selection by individuals in particular behavioural states. In Focus: DeCesare, N.J., Hebblewhite, M., Bradley, M., Hervieux, D., Neufeld, L. & Musiani, M. (2014) Linking habitat selection and predation risk to spatial variation in survival. Journal of Animal Ecology, 83, 343-352. Resource selection is often assumed to confer enhanced fitness, but this assumption is rarely examined. In a study involving woodland caribou subject to grey wolf predation, DeCesare et al. (2014) show that while patterns of selection by caribou did correspond with a fitness proxy (survival probability), individuals did not avoid wolf predation risk to the extent that would minimize mortality. Here, we use the results of this paper as a springboard for discussing the choice of fitness proxies and the need to account for individual behavioural variation in studies of resource selection.
authors.affiliation: School of Environmental and Forest Sciences, University of Washington, Seattle, Washington, 98195, USA.
authors.forename: Aaron J
authors.initials: AJ
authors.lastname: Wirsing
authors.affiliation: Department of Biological Sciences, Marine Sciences Program, Florida International University, North Miami, Florida, 33181, USA.
authors.forename: Michael R
authors.initials: MR
authors.lastname: Heithaus
mesh_terms: D000818:Animals; D017753:Ecosystem; D005260:Female; D020387:Food Chain; D008136:Longevity; D012053:Reindeer / Q000502:physiology*