Data from: Space-use behavior of woodland caribou based on a cognitive movement model
1. Movement patterns offer a rich source of information on animal behaviour and the ecological significance of landscape attributes. This is especially useful for species occupying remote landscapes where direct behavioural observations are limited. In this study, we fit a mechanistic model of anima...
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Sprache: | eng |
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Zusammenfassung: | 1. Movement patterns offer a rich source of information on animal
behaviour and the ecological significance of landscape attributes. This is
especially useful for species occupying remote landscapes where direct
behavioural observations are limited. In this study, we fit a mechanistic
model of animal cognition and movement to GPS positional data of woodland
caribou (Rangifer tarandus caribou; Gmelin 1788) collected over a wide
range of ecological conditions. 2. The model explicitly tracks individual
animal informational state over space and time, with resulting parameter
estimates that have direct cognitive and ecological meaning. Three biotic
landscape attributes were hypothesized to motivate caribou movement:
forage abundance (dietary digestible biomass), wolf (Canis lupus;
Linnaeus, 1758) density and moose (Alces alces; Linnaeus, 1758) habitat.
Wolves are the main predator of caribou in this system and moose are their
primary prey. 3. Resulting parameter estimates clearly indicated that
forage abundance is an important driver of caribou movement patterns, with
predator and moose avoidance often having a strong effect, but not for all
individuals. From the cognitive perspective, our results support the
notion that caribou rely on limited sensory inputs from their
surroundings, as well as on long-term spatial memory, to make informed
movement decisions. Our study demonstrates how sensory, memory and motion
capacities may interact with ecological fitness covariates to influence
movement decisions by free-ranging animals. |
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DOI: | 10.5061/dryad.7p60n |