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Australian Journal of Zoology Australian Journal of Zoology Society
Evolutionary, molecular and comparative zoology
RESEARCH ARTICLE

Invertebrate prey of the bark-foraging insectivore Phascogale tapoatafa: distribution of biomass amongst alternative foraging substrates within south-western Australian woodlands

F. R. Scarff A B C and J. S. Bradley A
+ Author Affiliations
- Author Affiliations

A School of Biological Sciences and Biotechnology, Murdoch University, Murdoch, WA 6150, Australia.

B Present address: Department of Biological Sciences, Macquarie University, NSW 2109, Australia.

C Corresponding author. Email: fscarff@bio.mq.edu.au

Australian Journal of Zoology 54(5) 335-341 https://doi.org/10.1071/ZO05051
Submitted: 31 August 2005  Accepted: 15 September 2006   Published: 16 November 2006

Abstract

The bark of trees is an important foraging substrate for a range of vertebrate insectivores. This study aimed to investigate the distribution of food resources available to the bark-foraging insectivore Phascogale tapoatafa, and to compare prey biomass on bark versus the litter layer. We conducted nocturnal sampling for arthropods on tree trunks and litter in a forest in south-western Australia. The bark fauna biomass was dominated by spiders, with cockroaches, beetles and ants also well represented. In contrast, the litter was dominated by orthopterans. Invertebrate biomass was much greater in the litter layer than on tree trunks. Prey items in bark were more plentiful in Melaleuca swamps than in the surrounding dry sclerophyll woodland. Within swamps, trees with the highest invertebrate densities had thin trunks or loose bark, whilst in woodland it was trees with thick bark. Water availability may increase the prey resource used by bark-foraging insectivores.


Acknowledgments

This work was supported by a Myrtle A. B. Lamb Scholarship granted to FRS. We are grateful to S. G. Rhind, who provided advice on phascogale behaviour and commented on an earlier manuscript, and to staff of the Department of Conservation and Land Management, who provided access to accommodation and much help throughout the project.


References

Baehr M. (1990). The carabid community living under the bark of Australian eucalypts. In ‘The Role of Ground Beetles in Ecological and Environmental Studies’. (Ed. N. E. Stork.) pp. 3–11. (Intercept: Hampshire, UK.)

Beard J. S. (1990). ‘Plant Life of Western Australia.’ (Kangaroo Press: Sydney.)

Braithwaite, L. W. , Dudzinski, M. L. , and Turner, J. (1983). Studies of arboreal marsupial fauna of eucalypt forests being harvested for wood pulp at Eden, New South Wales. II. Relationship between the fauna density, richness and diversity and measured variables of habitat. Australian Wildlife Research 10, 231–247.
Crossref | GoogleScholarGoogle Scholar | Gentilli J. (1989). Climate of the jarrah forest. In ‘The Jarrah Forest: a Complex Mediterranean Ecosystem’. (Eds B. Dell, J. J. Havel and N. Malajczuk.) pp. 23–40. (Kluwer: London.)

Gibbons P., and Lindenmayer D. (2002). Tree Hollows and Wildlife Conservation in Australia.’ (CSIRO: Melbourne.)

Gowing, G. , and Recher, H. F. (1984). Length–weight relationships for invertebrates from forests in south-eastern New South Wales. Australian Journal of Ecology 9, 5–8.
Crossref | GoogleScholarGoogle Scholar | Havel J. J. (1979). Vegetation, natural factors and human activity. In ‘Western Landscapes’. (Ed. J. Gentilli.) pp. 122–152. (University of Western Australia Press: Perth.)

Mac Nally, R. , Soderquist, T. R. , and Tzaros, C. (2000). The conservation value of mesic gullies in dry forest landscapes: avian assemblages in the box–ironbark ecosystem of southern Australia. Biological Conservation 93, 293–302.
Crossref | GoogleScholarGoogle Scholar | Noske R. A. (1985). Habitat use by three bark-foragers of eucalypt forests. In ‘Birds of Eucalypt Forests and Woodlands: Ecology, Conservation, Management’. (Eds A. Keast, H. F. Recher, H. Ford and D. Saunders.) pp. 193–204. (RAOU & Surrey Beatty: Sydney.)

R (2004). ‘R 1.9.1.’ (The R Foundation for Statistical Computing: Vienna)

Radho-Toly, S. , Majer, J. D. , and Yates, C. (2001). Impact of fire on leaf nutrients, arthropod fauna and herbivory of native and exotic eucalypts in Kings Park, Perth, Western Australia. Austral Ecology 26, 500–506.
Crossref | GoogleScholarGoogle Scholar | Rhind S. G. (2004). Direct impacts of logging and forest management on the brush-tailed phascogale Phascogale tapoatafa and other arboreal marsupials in a jarrah forest of Western Australia. In ‘Conservation of Australia’s Forest Fauna’. 2nd edn. (Ed. D. Lunney.) pp. 639–655. (Royal Zoological Society of New South Wales: Sydney.)

Rhind, S. G. , and Bradley, J. S. (2002). The effect of drought on body size, growth and abundance of wild brush-tailed phascogales (Phascogale tapoatafa) in south-western Australia. Wildlife Research 29, 235–245.
Crossref | GoogleScholarGoogle Scholar | SPSS (2003). ‘SPSS 12.0.1 for Windows.’ (SPSS: Chicago, IL.)

Stokes, V. L. , Pech, R. P. , Banks, P. B. , and Arthur, A. D. (2004). Foraging behaviour and habitat use by Antechinus flavipes (Marsupialia: Dasyuridae) in response to predation risk in eucalypt woodland. Biological Conservation 117, 331–342.
Crossref | GoogleScholarGoogle Scholar | Wykes B. J. (1985). The jarrah forest avifauna and its re-establishment after bauxite mining. Curtin University School of Biology Bulletin No. 11.