Wildlife Research Wildlife Research Society
Ecology, management and conservation in natural and modified habitats
RESEARCH ARTICLE

Koalas on North Stradbroke Island: diet, tree use and reconstructed landscapes

W. Woodward A B , W. A. Ellis A C E , F. N. Carrick A , M. Tanizaki A , D. Bowen A and P. Smith D

A Centre for Mined Land Rehabilitation, The University of Queensland, Brisbane, Qld 4072, Australia.

B The School of Land, Crop and Food Sciences, The University of Queensland, Brisbane, Qld 4072, Australia.

C Miscellaneous Ecology Group, School of Integrative Biology, The University of Queensland, Brisbane, Qld 4072, Australia.

D Consolidated Rutile Limited, PO Box 47, Dunwich, Qld 4183, Australia.

E Corresponding author. Email: w.ellis@uq.edu.au

Wildlife Research 35(7) 606-611 http://dx.doi.org/10.1071/WR07172
Submitted: 9 November 2007  Accepted: 16 June 2008   Published: 17 November 2008

Abstract

North Stradbroke Island lies 4 km off the coast of Queensland, Australia. It is home to one of the only naturally occurring island populations of koalas and it is mined for mineral sands. We analysed the diet and day use tree selections of koalas and recorded the tree species composition of revegetated and undisturbed landscapes at this location. We used faecal cuticle examination to compare the diet of koalas that used reconstructed landscapes with that of koalas that used undisturbed areas. Reconstructed landscapes that were composed of more than 95% diet and/or roost tree species had evidence of use by koalas. Eucalyptus robusta was the most commonly eaten and utilised species and there was no difference in general diet composition between koalas that used the revegetated landscape and those inhabiting undisturbed areas. Other species that were used for roosting and forage included E. racemosa, E. pilularis, Lophostemon confertus and Melaleuca quinquinerva. We observed individual differences and seasonal variation in the diet composition of radio-tracked koalas. These results suggest either flexibility in the diet choices of koalas, or individual preferences within groups of koalas. Our results also indicate that post-mining landscapes can provide habitat that will be used by koalas, which should encourage further efforts into habitat re-creation for native species.


References

Brown V. K. , and Southwood T. R. E. (1987). Secondary succession: patterns and strategies. In ‘Colonisation, Succession and Stability’. (Eds A. J. Gray, M. J. Crawley and P. J. Edwards.) pp. 315–337. (Blackwell Scientific Publications: Oxford.)

Dique D. S. Preece H. J. Thompson J. de Villiers D. L. 2004 Determining the distribution and abundance of a regional koala population in south-east Queensland for conservation management. Wildlife Research 31 109 117 doi:10.1071/WR02031

Ellis B. 2003 Integration of natural resources management under Queensland mining legislation. Environmental and Planning Law 20 64 75

Ellis W. A. H. Carrick F. N. Lundgren P. Veary A. Cohen B. 1999 The use of faecal cuticle examination to determine the dietary compostion of koalas. Australian Zoologist 31 127 133


Ellis W. A. H. Melzer A. Carrick F. N. Hasegawa M. 2002 Tree use, diet and home range of the koala (Phascolarctos cinereus) at Blair Athol, central Queensland. Wildlife Research 29 303 311
doi:10.1071/WR00111

Ellis W. A. H. Melzer A. Green B. Newgrain K. Hindell M. A. Carrick F. N. 1995 Seasonal variation in water flux, field metabolic rate and food consumption of free-ranging koalas (Phascolarctos cinereus). Australian Journal of Zoology 43 59 68 doi:10.1071/ZO9950059

Ellis W. A. H. Sullivan B. J. Lisle A. T. Carrick F. N. 1998 The spatial and temporal distribution of koala faecal pellets. Wildlife Research 25 663 668 doi:10.1071/WR97028

Field S. A. O’Connor P. J. Tyre A. j. Possingham H. P. 2007 Making monitoring meaningful. Austral Ecology 32 485 491 doi:10.1111/j.1442-9993.2007.01715.x

Fitzgerald A. E. 1976 Diet of the opossum Trichosurus vulpecula (Kerr) in the Orongorongo Valley, Wellington, New Zealand, in relation to food-plant availability. New Zealand Journal of Zoology 3 399 419

Fox J. E. D. (1997). Fauna habitat reconstruction after mining. In ‘Workshop on Fauna Habitat Reconstruction After Mining’. (Eds C. Asher and L. Bell.) pp. 151–160. (Australian Centre for Mining Environmental Research: Kenmore, Qld.)

Hasegawa M. (1995). Habitat utilisation by koalas (Phascolarctos cinereus) at Point Halloran, Queensland. M.Sc. Thesis, The University of Queensland, Brisbane.

Kavanagh R. P. Stanton M. A. Brassil T. 2007 Koalas continue to use their previous home-ranges after selective logging in Callitris–Eucalyptus forest. Wildlife Research 34 94 107
doi:10.1071/WR06126

Matthews A. Lunney D. Gresser S. Maitz W. 2007 Tree use by koalas (Phascolarctos cinereus) after fire in remnant coastal forest. Wildlife Research 34 84 93 doi:10.1071/WR06075

McAlpine C. , Rhodes J. , Peterson A. , Possingham H. , Callaghan J. , Curran T. , Mitchell D. , and Lunney D. (2007). ‘Planning guidelines for koala conservation and recovery. A guide to best planning practice.’ (Australian Koala Foundation and The University of Queensland: Brisbane.) Available online at http://espace.library.uq.edu.au/view/UQ:124088 [Verified July 2008].

Melzer A. Carrick F. Menkhorst P. Lunney D. St John B. 2000 Overview, critical assessment, and conservation implications of koala distribution and abundance. Conservation Biology 14 619 628 doi:10.1046/j.1523-1739.2000.99383.x

Pacala S. W. Rees M. 1998 Models suggesting field experiments to test two hypotheses explaining successional diversity. American Naturalist 152 729 737 doi:10.1086/286203

Pfeiffer A. Melzer A. Tucker G. Clifton D. Ellis W. 2005 Tree use by koalas (Phascolarctos cinereus) on St Bees Island, Queensland – report of a pilot study. Proceedings of the Royal Society of Queensland 112 47 51

Phillips S. Callaghan J. Thompson V. 2000 The tree species preferences of koalas (Phascolarctos cinereus) inhabiting forest and woodland communities on Quaternary deposits in the Port Stephens area, New South Wales. Wildlife Research 27 1 10
doi:10.1071/WR98054

Phillips S. S. (2000). Tree species preferences of the Koala (Phascolarctos cinereus) as a basis for the delineation of management areas for recovery planning in New South Wales. Unpublished report prepared for the Koala Recovery Plan.

Preece H. (2007). Monitoring and modelling threats to koala populations in rapidly urbanising landscapes: Koala Coast, south east Queensland, Australia. Ph.D. Thesis, The University of Queensland, Brisbane.

Price O. Milne D. Tynan C. 2005 Poor recovery of woody vegetation on sand and gravel mines in the Darwin region of the Northern Territory. Ecological Restoration and Management 6 118 123 doi:10.1111/j.1442-8903.2005.00228.x

Samedi I. (1995). Modelling habitat suitability for koalas and application of UET methods in planning for koala habitat. Ph.D. Thesis, The University of Queensland, Brisbane.

Sattler P. S. , and Williams R. D. (1999). ‘The Conservation Status of Queensland’s Bioregional Ecosystems.’ (Environmental Protection Agency: Brisbane, Australia.)

Sullivan B. J. Baxter G. S. Lisle A. T. 2002 Low-density koala (Phascolarctos cinereus) populations in the mulgalands of south-west Queensland. I. Faecal pellet sampling protocol. Wildlife Research 29 455 462 doi:10.1071/WR00110

Sullivan B. J. Baxter G. S. Lisle A. T. Pahl L. Norris W. M. 2004 Low-density koala (Phascolarctos cinereus) populations in the mulgalands of south-west Queensland. IV. Abundance and conservation status. Wildlife Research 31 19 29 doi:10.1071/WR02037

Sullivan B. J. Norris W. M. Baxter G. S. 2003 Low-density koala (Phascolarctos cinereus) populations in the mulgalands of south-west Queensland. II. Distribution and diet. Wildlife Research 30 331 338 doi:10.1071/WR00032

Thompson J. (2006). The comparative ecology and population dynamics of koalas in the Koala Coast Region of south east Queensland. Ph.D. Thesis, The University of Queensland, Brisbane.

Tun U. N. (1993). Re-establishment of rehabilitated koalas in the wild and their use of habitat in sheldon, redland shire, southeast Queensland with particular reference to dietary selection. M.Sc. Thesis, The University of Queensland, Brisbane.



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