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International Journal of Wildland Fire International Journal of Wildland Fire Society
Journal of the International Association of Wildland Fire
RESEARCH ARTICLE

Fire severity alters spatio–temporal movements and habitat utilisation by an arboreal marsupial, the mountain brushtail possum (Trichosurus cunninghami)

L. E. Berry A C , D. B. Lindenmayer A , T. E. Dennis B , D. A. Driscoll A and S. C. Banks A
+ Author Affiliations
- Author Affiliations

A The Fenner School of Environment and Society, Australian National University, Acton, Canberra, ACT 0200, Australia.

B School of Biological Sciences, University of Auckland, Auckland 1042, New Zealand.

C Corresponding author. Email: Laurence.Berry@anu.edu.au

International Journal of Wildland Fire 25(12) 1291-1302 https://doi.org/10.1071/WF15204
Submitted: 27 November 2015  Accepted: 10 August 2016   Published: 20 October 2016

Abstract

Understanding how severe wildfires influence faunal movement is essential for predicting how changes in fire regimes will affect ecosystems. We examined the effects of fire severity distribution on spatial and temporal variation in movement of an Australian arboreal mammal, the mountain brushtail possum (Trichosurus cunninghami). We used GPS telemetry to characterise the movements of 18 possums in landscapes burnt to differing extents by a large wildfire. We identified a temporal change in movement patterns in response to fire. In unburnt landscapes, individuals moved greater distances early and late in the night and had less overlap in the areas used for foraging and denning, than in high-severity burnt landscapes. Habitat selection was dependent on the spatial context of fire in the surrounding landscape. Forest recently burnt at high severity may provide suitable habitat for species such as the mountain brushtail possum, if protected from subsequent disturbance, such as salvage logging. However, spatial and temporal patterns of habitat use and selection differ considerably between burnt and undisturbed landscapes. The spatial outcomes of ecological disturbances such as wildfires have the potential to alter the behaviour and functional roles of fauna across large areas.

Additional keywords: biodiversity, ecosystems, fire regimes, mosaic, post-fire effects.


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