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Quantifying consistent individual differences in habitat selection.

Martin Leclerc1, Eric Vander Wal2,3, Andreas Zedrosser4,5

  • 1Département de Biologie, Canada Research Chair in Evolutionary Demography and Conservation and Centre for Northern Studies, Université de Sherbrooke, Sherbrooke, J1K2R1, Canada. Martin.Leclerc2@USherbrooke.ca.

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|November 25, 2015
PubMed
Summary
This summary is machine-generated.

Brown bears show consistent individual differences in habitat selection, with 30-42% of variation attributed to individuals. This highlights the evolutionary potential of habitat selection behavior in wildlife.

Keywords:
Functional responsePersonalityRepeatabilityUrsus arctos

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Area of Science:

  • Ecology
  • Behavioral Ecology
  • Evolutionary Biology

Background:

  • Habitat selection is crucial for survival and reproduction, linking individuals to essential resources.
  • Traditional research often aggregates individual patterns, potentially masking individual differences.
  • Understanding individual variation in habitat selection is key to exploring its evolutionary implications.

Purpose of the Study:

  • To quantify and test for consistent individual differences in habitat selection.
  • To assess the repeatability of habitat selection in brown bears (Ursus arctos) for specific habitat types.
  • To investigate the evolutionary potential of individual habitat selection.

Main Methods:

  • Utilized random coefficients in resource selection functions (RSFs) to model individual variation.
  • Employed repeatability estimates to quantify the consistency of individual habitat selection.
  • Applied the method to a 6-year GPS relocation dataset of brown bears, controlling for habitat availability.

Main Results:

  • Repeatability estimates for habitat selection were 0.304 for bogs and 0.420 for cut blocks.
  • Consistent individual variation accounted for 30.4% of habitat selection variability for bogs and 42.0% for cut blocks.
  • Simulations indicated repeatability values are independent of RSF parameter estimates.

Conclusions:

  • Consistent individual differences in habitat selection exist in brown bears.
  • These individual variations have significant implications for the evolutionary dynamics of habitat selection.
  • The study provides a novel approach to quantify individual differences in habitat selection behavior.