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Characteristics of mammal communities in Tasmanian forests: exploring the influence of forest type and disturbance history

Citation

Flynn, EM and Jones, SM and Jones, ME and Jordan, GJ and Munks, SA, Characteristics of mammal communities in Tasmanian forests: exploring the influence of forest type and disturbance history, Wildlife Research, 38, (1) pp. 13-29. ISSN 1035-3712 (2011) [Refereed Article]

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Copyright Statement

Copyright © 2010 CSIRO

Official URL: http://www.publish.csiro.au

DOI: doi:10.1071/WR10025

Abstract

Context. With increasing pressure worldwide on forest habitat, it is crucial to understand faunal ecology to effectively manage and minimise impacts of anthropogenic habitat disturbance. Aims. This study assessed whether differences in forest type and disturbance history were reflected in small to medium mammal communities found in Tasmania’s production forests. Methods. Trapping was conducted in spring and summer, and autumn and winter during 2007–08 at four dry Eucalyptus forest sites (two regenerating after harvest and two in relatively undisturbed forest) in south-east Tasmania, and four wet Eucalyptus forest sites (two regenerating after harvest and two in relatively undisturbed forest) in north-east Tasmania. All sites were embedded within a matrix of mature or older aged regenerating forest. Key results. Thirteen mammal species were recorded across all sites. There was no difference in species diversity or richness between forest type or disturbance regime, but species composition differed. Total number of individual animals and captures was influenced strongly by forest type and disturbance history, with most animals captured in the dry disturbed forest sites. Abundance of some species (e.g. bettongs and potoroos) was higher in disturbed sites than undisturbed sites. Brushtail possum numbers (adults and offspring), however, were lower in disturbed sites and populations displayed a male biased adult sex ratio and lower breeding frequency. Habitat structural complexity and vegetation diversity within core sites, and age structure of the forest in the surrounding landscape did not vary significantly, indicating that broad resource (food and refuge) availability was equivalent across sites. Conclusions. In general, the small to medium mammals in this study did not appear to be significantly affected by forest harvesting in the medium term. Implications. Although past harvesting altered the abundance of some habitat features (e.g. canopy cover, basal area of trees, and tree hollow availability), we suggest that the availability of such features in the surrounding landscape may mitigate the potential effects of disturbance on the species for which such habitat features are important.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Ecology
Research Field:Community Ecology
Objective Division:Environment
Objective Group:Flora, Fauna and Biodiversity
Objective Field:Forest and Woodlands Flora, Fauna and Biodiversity
Author:Flynn, EM (Ms Erin Flynn)
Author:Jones, SM (Professor Susan Jones)
Author:Jones, ME (Associate Professor Menna Jones)
Author:Jordan, GJ (Associate Professor Greg Jordan)
Author:Munks, SA (Dr Sarah Munks)
ID Code:68730
Year Published:2011
Web of Science® Times Cited:6
Deposited By:Zoology
Deposited On:2011-03-18
Last Modified:2017-11-01
Downloads:0

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