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Post-fire habitat use of the golden-backed tree-rat (Mesembriomys macrurus) in the northwest Kimberley, Western Australia


Hohnen, R and Tuft, KD and Legge, S and Radford, IJ and Carver, S and Johnson, CN, Post-fire habitat use of the golden-backed tree-rat (Mesembriomys macrurus) in the northwest Kimberley, Western Australia, Austral Ecology, 40, (8) pp. 941-952. ISSN 1442-9985 (2015) [Refereed Article]

Copyright Statement

2015 Ecological Society of Australia

DOI: doi:10.1111/aec.12278


Fire regimes are changing throughout the world. Changed fire patterns across northern Australian savannas have been proposed as a factor contributing to recent declines of small- and medium-sized mammals. Despite this, few studies have examined the mechanisms that underpin how species use habitat in fire-affected landscapes. We determined the habitats and resources important to the declining golden-backed tree-rat (Mesembriomys macrurus) in landscapes partially burnt by recent intense fire. We aimed to (i) compare the relative use of rainforest and savanna habitats; (ii) examine the effect of fire history on use of savanna habitats; and (iii) identify key foraging and denning resources. Habitat selection was examined by comparing the availability of eight habitat types around real (used) and generated (available) location points. Individuals used a range of habitats, but consistently selected long unburnt rainforest in preference to recently burnt savanna (112 months post-fire); however, recently burnt savanna was used in preference to long unburnt savanna. Tree-rats foraged in Terminalia hadleyana, Planchonia rupestris, Celtis philippensis and Owenia vernicosa, tree species that are found in a variety of habitat types. Individuals used a range of den sites, including cliffs, trees, logs, scree and stags found throughout the study area. Although multiple factors may have led to the decline of Mes. macrurus across its range, these results are consistent with the idea that changes in the savanna structure as a consequence of contemporary fire patterns could also have a role. The continued persistence of Mes. macrurus in the northwest Kimberley may be supported by land management strategies that conserve fruiting and hollow-bearing trees, and maintain the availability of fire-sensitive vegetation types.

Item Details

Item Type:Refereed Article
Keywords:tree rat, habitat use, fire
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Population ecology
Objective Division:Environmental Management
Objective Group:Management of Antarctic and Southern Ocean environments
Objective Field:Assessment and management of Antarctic and Southern Ocean ecosystems
UTAS Author:Hohnen, R (Dr Rosemary Hohnen)
UTAS Author:Carver, S (Associate Professor Scott Carver)
UTAS Author:Johnson, CN (Professor Christopher Johnson)
ID Code:103669
Year Published:2015
Web of Science® Times Cited:18
Deposited By:Zoology
Deposited On:2015-10-23
Last Modified:2017-10-31

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