ORCID Profile
0000-0002-6521-083X
Current Organisation
Forest Practices Authority
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Population Ecology | Ecology | Behavioural Ecology | Conservation and Biodiversity
Wind Energy | Native Forests | Flora, Fauna and Biodiversity at Regional or Larger Scales |
Publisher: CSIRO Publishing
Date: 2007
DOI: 10.1071/ZO06017
Abstract: Determining the population density of ectotherms is often confounded by in idual activity levels, which are highly dependent on ambient climatic conditions. In this study we used radio-telemetry and streamside surveys to examine the influence of local climatic conditions on in idual activity levels (detectability) and streamside density of a population of endangered giant barred frog (Mixophyes iteratus) along the Coomera river in south-east Queensland. Temperature was the most important climatic variable influencing the behaviour and hence detectability of M. iteratus. The results indicated that males bury under the leaf litter during cold conditions ( °C) so fewer were detected during surveys. Although females were also found to bury under the leaf litter in cold weather, no significant relationship between exposure and streamside density was detected. This is likely to be due to the lower number of females detected during surveys. The streamside density of juveniles was significantly related to temperature and rainfall, but little of the variance in the data was explained by climatic conditions, despite greater numbers of juveniles being found than adults. These results indicate that, for increased efficiency, surveys of Mixophyes iteratus should be undertaken when temperatures exceed 18°C.
Publisher: Elsevier BV
Date: 08-2018
Publisher: Elsevier BV
Date: 11-2020
Publisher: Springer Science and Business Media LLC
Date: 26-02-2011
Publisher: Elsevier BV
Date: 07-2009
Publisher: CSIRO Publishing
Date: 2008
DOI: 10.1071/WR08007
Abstract: The loss of hollow-bearing trees in production forest areas can have large impacts on animal populations that rely on them for shelter. This study facilitates the selection of appropriate trees for retention by examining the proportion and type of trees that were used by vertebrate fauna in mature wet and dry Eucalyptus obliqua forest in Tasmania. Felled trees were searched for hollows and secondary evidence of use by fauna. Classification Trees and Bayesian logistic regression modelling were used to examine the site and tree attributes that best explained the use of a tree by fauna. We did two separate analyses: one using attributes expected to be causally related to hollow use, and a second using attributes that might be correlated with hollow use and could be easily assessed in standing trees. In all, 28% of hollow-bearing trees examined showed evidence of use, which is at the lower end of the scale found in other areas of Australia. The variables most strongly related to the use of a tree were hollow abundance, tree size and senescence. Random Forest modelling indicated that the likelihood of a hollow being used increased with hollow size, particularly hollow depth. Counting the number of hollows in standing trees was the best way to identify a tree that is likely to be used by fauna and this was particularly important for younger and healthier trees. It was recommended that trees to be retained should contain at least one large hollow. It was estimated that 8–15 trees per hectare were used by hollow-using fauna in mature wet and dry E. obliqua forest in Tasmania.
Publisher: Wiley
Date: 03-12-2020
DOI: 10.1002/ETC.4914
Publisher: CSIRO Publishing
Date: 2009
DOI: 10.1071/WR09037
Abstract: Context. The retention of mature eucalypts in plantation areas is expected to have bio ersity benefits, especially for animals with specific requirements such as hollow-using species. Aims. The aim of the current study was to examine the degree to which retained trees embedded in young (≤3 years old) eucalypt plantation provide habitat for birds, whether as a perching/foraging resource for all bird species or as a potential shelter/breeding site for hollow-using species. Methods. We examined bird use of remnant trees in young eucalypt plantations at five sites in northern Tasmania. Four 20-min surveys were done on 214 trees (101 of these had visible hollows) over two breeding seasons (2007 and 2008). Bird activity at a hollow was recorded during all four surveys, whereas the number of bird species observed in a tree was only recorded during two surveys in the first breeding season. The relationship between both species richness and hollow use with site and tree variables was explored using hierarchical partitioning. Key results. Bird species richness at a tree was most strongly related to which of the five properties the tree was located on. This may be due to differences in soil fertility and/or the amount of forested area within and around the property. Birds were observed investigating 50 hollows on 36 trees. More than one hollow was used in 10 trees and hollow use was most strongly related to hollow abundance in a tree. High re-use of particular trees (n = 15) and hollows (n = 16) indicates that retained trees vary in the type and quality of habitat they provide for hollow-using birds. The most common hollow users observed were the common starling (Sturnus vulgaris) and the striated pardalote (Pardalotus striatus). Conclusions and implications. Retaining trees in plantation areas, particularly trees with special features such as hollows, should be encouraged to provide habitat for birds and help contribute to the maintenance of bird ersity in an area.
Publisher: Wiley
Date: 21-06-2012
Publisher: Springer Science and Business Media LLC
Date: 08-09-2011
Publisher: Elsevier BV
Date: 06-2020
Publisher: Elsevier BV
Date: 09-2021
Publisher: Elsevier BV
Date: 06-2008
Publisher: Informa UK Limited
Date: 2008
Publisher: CSIRO Publishing
Date: 2008
DOI: 10.1071/ZO08003
Abstract: In Tasmania, a considerable proportion of the forested landscape is available for land clearance and production forestry, which has and will continue to result in a decline in hollow availability unless managed appropriately. All hollow-using species are listed as having priority status under the Tasmanian Regional Forest Agreement. To ensure the habitat for hollow-using fauna is managed effectively, we first have to understand the requirements of the species involved. This paper is a review of the distribution, hollow requirements and conservation status of the five species of arboreal marsupials, eight species of bats and 29 bird species that use hollows in Tasmania. The number of species that use hollows is lower than in many other areas of Australia, but these species represent a large proportion of the vertebrate fauna of Tasmania. Three of these species and nine subspecies are endemic to Tasmania and seven are exotic. Four bird species are listed as Threatened at the state and/or national level. Twenty-five of Tasmania’s hollow-using species are capable of using small hollows, 14 can use medium-sized hollows and three bird species are limited to using large hollows. Current records indicate that the highest ersity of hollow-using species is associated with dry forest areas.
Publisher: Wiley
Date: 18-02-2014
DOI: 10.1111/AEC.12118
Publisher: Wiley
Date: 31-08-2018
DOI: 10.1111/EMR.12336
Publisher: Wiley
Date: 09-2018
DOI: 10.1111/EMR.12337
Publisher: Elsevier BV
Date: 03-2008
Start Date: 09-2022
End Date: 09-2026
Amount: $719,068.00
Funder: Australian Research Council
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