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RESEARCH ARTICLE
Contents Vol 33(2)

Estimating the abundance of eastern grey kangaroos (Macropus giganteus) in south-eastern New South Wales, Australia

A. R. Pople A D E , S. C. Cairns B , N. Menke A and N. Payne C
+ Author Affiliations
- Author Affiliations

A The Ecology Centre, University of Queensland, Brisbane, Qld 4072, Australia.

B Zoology, School of Environmental Sciences and Natural Resources Management, University of New England, Armidale, NSW 2351, Australia.

C Department of Environment and Conservation, PO Box 2111, Dubbo, NSW 2830, Australia.

D Current address: Land Protection, Department of Natural Resources, Mines and Water, GPO Box 2454, Brisbane, Qld 4001, Australia.

E Corresponding Author: Email: tony.pople@nrm.qld.gov.au

Wildlife Research 33(2) 93-102 https://doi.org/10.1071/WR05021
Submitted: 25 February 2005  Accepted: 13 February 2006   Published: 12 April 2006

Abstract

To provide an estimate of kangaroo numbers for harvest management, a survey was designed for an area of 29 500 km2 encompassing the agricultural and grazing lands of the Braidwood, Cooma, Goulburn, Gundagai and Yass Rural Lands Protection Board (RLPB) districts in south-east New South Wales. An aerial survey using a helicopter was considered more efficient than ground survey because of the size of the area, relatively high relief and dense tree cover, and the need for regular monitoring. Tree cover and landscape relief was used to stratify the five RLPB districts into areas of probable high, medium and low kangaroo density. Kangaroo density estimated from helicopter surveys conducted in the Northern Tablelands of New South Wales was used to suggest densities and thereby allocate survey effort in each stratum. A survey comprising 735 km of transect line was conducted in winter 2003 with a target precision of 20%. The survey returned an estimate of 286 600 ± 32 300 eastern grey kangaroos for the whole of the proposed south-east New South Wales kangaroo-management zone. In 2004, a trial harvest of slightly less than 15% of this estimate was taken. Success of the trial will be determined by the impact of harvesting on the population’s dynamics, by landholder and industry participation, and by the capacity to monitor population size, harvest offtake and compliance with regulations.


Acknowledgments

Numerous people provided helpful discussion on the distribution and abundance of kangaroos in the district, including Lisa Collins, Andrew Moore, Simon Allender and Pam O’Brien from NSW DEC offices, Mark McGaw, Tim Sears, Col Elphick, Ian Klingham and Kevin Baker from RLPB offices, and landholders Lindsey Butt, Geoff McFarlane, Tony O’Shea, Andrew Bain and John Betts, and Bruce Hazell from Bookham Agricultural Bureau. We also thank Stephen Naven of NSW DEC for providing coverages of RLPB districts, national parks and state forests. We thank David Bearup (NSW DEC) for being one observer and Ian Porter (Reid Heliwork) for piloting the helicopter. The feasibility study and survey were funded by NSW DEC. We also thank Joshua Gilroy (NSW DEC) for his encouragement and support of this project. The manuscript was improved by comments and suggestions by two anonymous referees.


References

Barnes, A. , and Hill, G. J. E. (1992). Estimating kangaroo damage to winter wheat crops in the Bungunya district of southern Queensland. Wildlife Research 19, 417–427.
| Crossref | GoogleScholarGoogle Scholar | Buckland S. T., Anderson D. R., Burnham K. P., and Laake J. L. (1993). ‘Distance Sampling.’ (Chapman and Hall: London.)

Bureau of Rural Sciences (2001). 1996/97 Land Use of Australia, Version 2. National Land and Water Resources Audit, Canberra.

Cairns S. C. (2003). A report to the New South Wales National Parks & Wildlife Service on the consultancy: Kangaroo Monitoring – New England Tablelands Helicopter Survey. Unpublished report to New South Wales National Parks and Wildlife Service, Dubbo, NSW.

Cairns S. C. (2004). A report to the New South Wales Department of Environment and Conservation on the consultancy: Kangaroo Monitoring – Redesign and Analysis of the Northern Tablelands Helicopter Survey. Unpublished report to New South Wales Department of Environment and Conservation, Dubbo, NSW.

Caughley G. J. (1979). Design for aerial censuses. In ‘Aerial Survey of Fauna Populations’. pp. 15–23. (Australian Government Publishing Service: Canberra.)

Caughley, G. , Grigg, G. C. , and Short, J. (1983). How many kangaroos? Search 14, 151–152.
DEC (2004). 2005 kangaroo quota submission New South Wales. Department of Environment and Conservation (NSW), Dubbo, NSW. http://www.nationalparks.nsw.gov.au/PDFs/KMP_quota_submission_2005.pdf

Edwards G. P. (1989). The interaction between macropodids and sheep: a review. In ‘Kangaroos, Wallabies and Rat-kangaroos’. (Eds G. Grigg, P. Jarman and I. Hume.) pp. 795–804. (Surrey Beatty: Sydney.)

Engen, S. , Lande, R. , and Saether, B.-E. (1997). Harvesting strategies for fluctuating populations based on uncertain population estimates. Journal of Theoretical Biology 186, 201–212.
| Crossref | GoogleScholarGoogle Scholar | Geoscience Australia (2001). Relief. Digital dataset. National Land and Water Resources Audit, Canberra.

Gerrodette, T. (1987). A power analysis for detecting trends. Ecology 68, 1364–1372.
Hacker R. B., McLeod S. R., Druhan J., Tenhumberg B., and Pradhan U. (2004). Kangaroo management options in the Murray–Darling Basin. Report to the Murray Darling Basin Commission, Canberra. http://publications.mdbc.gov.au/

Hall, S. J. (1998). Closed areas for fisheries management – the case consolidates. Trends in Ecology & Evolution 13, 297–298.
| Crossref | GoogleScholarGoogle Scholar | Pople A. R. (1989). Habitat associations of Australian Macropodoidea. In ‘Kangaroos, Wallabies and Rat-kangaroos’. (Eds G. Grigg, P. Jarman, and I. Hume.) pp. 755–766. (Surrey Beatty: Sydney.)

Pople, A. R. (1999). Repeatability of aerial surveys. Australian Zoologist 31, 280–286.
Pople A. R. (2003). Harvest management of kangaroos during drought. Unpublished report to New South Wales National Parks and Wildlife Service, Dubbo, NSW.

Pople, A. R. (2004). Population monitoring for kangaroo management. Australian Mammalogy 26, 37–44.
Pople A. R., and Grigg G. C. (1998). Commercial harvesting of kangaroos in Australia. Environment Australia, Canberra. http://www.ea.gov.au/biodiversity/trade-use/wild-harvest/kangaroo/harvesting/index.html

Pople A. R., and McLeod S. R. (2000). Kangaroo management and the sustainable use of rangelands. In ‘Management for Sustainable Ecosystems’. (Eds P. T. Hale, A. Petrie, D. Moloney, and P. Sattler.) pp. 78–86. (Centre for Conservation Biology, The University of Queensland: Brisbane.)

Pople, A. R. , Cairns, S. C. , Clancy, T. F. , Grigg, G. C. , Beard, L. A. , and Southwell, C. J. (1998a). An assessment of the accuracy of kangaroo surveys using fixed-wing aircraft. Wildlife Research 25, 315–326.
| Crossref | GoogleScholarGoogle Scholar | Pople A. R., Cairns S. C., and Menke N. (2003). Monitoring kangaroo populations in southeastern New South Wales. Unpublished report to New South Wales National Parks and Wildlife Service, Dubbo, NSW. http://www.nationalparks.nsw.gov.au/PDFs/kmp_se_nsw_survey.pdf

RSPCA (2002). Kangaroo shooting code compliance: a survey of the extent of compliance with the requirements of the code of practice for the humane shooting of kangaroos. Environment Australia, Canberra.

Sahukar R., Gallery C., Smart J., and Mitchell P. (2003). The bioregions of New South Wales: their biodiversity, conservation and history. National Parks and Wildlife Service (NSW), Sydney.

Southwell C. (1989). Techniques for monitoring the abundance of kangaroo and wallaby populations. In ‘Kangaroos, Wallabies and Rat-kangaroos’. (Eds G. Grigg, P. Jarman, and I. Hume.) pp. 659–693. (Surrey Beatty: Sydney.)

Southwell, C. , and Sheppard, N. (2000). Assessing harvested populations of the euro (Macropus robustus erubescens) in the Barrier ranges of western NSW. Australian Mammalogy 21, 165–171.
Thomas L., Laake J. L., Derry J. F., Buckland S. T., Borchers D. L., et al. (1998). ‘Distance 3.5.’ (Research Unit for Wildlife Population Assessment, University of St Andrews: St Andrews, UK)

Thompson S. K. (1992). ‘Sampling.’ (John Wiley and Sons: New York.)

Tracey, J. P. , Fleming, P. J. S. , and Melville, G. J. (2005). Does variable probability of detection compromise the use of indices in aerial surveys of medium-sized mammals? Wildlife Research 32, 245–252.
| Crossref | GoogleScholarGoogle Scholar | Wilson M. (Ed.) (1999). ‘The Kangaroo Betrayed.’ (Hill of Content Publishing: Melbourne.)