A wild goose chase – temporal and spatial variation in the distribution of the Magpie Goose (Anseranas semipalmata) in Australia
Errol R. Nye A C D , Chris R. Dickman A and Richard T. Kingsford BA Institute of Wildlife Research, School of Biological Sciences, Heydon-Laurence Building, University of Sydney, NSW 2006, Australia.
B School of Biological, Earth and Environmental Sciences, University of New South Wales, NSW 2052, Australia.
C Present address: Biosis Research Pty Ltd, PO Box 489, Port Melbourne, Vic. 3207, Australia.
D Corresponding author. Email: enye@biosisresearch.com.au
Emu 107(1) 28-37 https://doi.org/10.1071/MU05012
Submitted: 4 March 2005 Accepted: 4 July 2006 Published: 15 March 2007
Abstract
At the time of European settlement in Australia in 1788, Magpie Geese (Anseranas semipalmata) were abundant, as they remain today, across northern Australia but were also common on swamps and on coastal and inland river floodplains in south-eastern Australia. However, by the early 1900s Magpie Geese had suffered a serious contraction of range from the south-east. In this study, we review all available records of the Magpie Goose and compile a list of processes potentially causing their decline. Historical changes in distribution are then compared with time frames of threatening processes to identify processes most likely to have driven the observed changes. The results suggest that the decline was primarily from loss of wetland habitat and hunting, although lesser threats such as poisoning, predation by Red Foxes (Vulpes vulpes) and severe drought may have increased the rate of decline. Since protection of the species from hunting in the 1930s in eastern and southern states and successful reintroductions in Victoria, New South Wales and South Australia, the species has returned to parts of its former range. However, populations are unlikely to return to their former numbers in the south-east as management of water resources has greatly reduced areas of breeding habitat and drought refuges. We suggest a program of management for southern populations of the Magpie Goose that includes long-term monitoring, engagement of landholders, identification and protection of existing wetlands, creation of new habitat, and reduction of disturbance from humans, introduced pests and livestock.
Acknowledgements
We thank three referees for their helpful comments. We also thank Birds Australia, the state and other museums and various Government departments noted in the Methods for the use of their atlas and specimen records. The project was funded by Earthwatch and an ARC SPIRT grant to Eric J. Dorfman.
Abbott, I. (2002). Origin and spread of the cat, Felis catus, on mainland Australia, with a discussion of the magnitude of its early impact on native fauna. Wildlife Research 29, 51–74.
| Crossref | GoogleScholarGoogle Scholar |
Anon, (1903). Destruction of birds by poisoned grain. Emu 3, 130–131.
Bayliss, P. , and Yeomans, K. M. (1990). Seasonal distribution and abundance of Magpie Geese, Anseranas semipalmata Latham, in the Northern Territory, and their relationship to habitat, 1983–86. Australian Wildlife Research 17, 15–38.
| Crossref | GoogleScholarGoogle Scholar |
Bravery, J. A. (1970). The birds of Atherton Shire, Queensland. Emu 70, 49–63.
Brook, B. W. , Burgman, M. A. , and Frankham, R. (2000). Differences and congruencies between PVA packages: the importance of sex ratio for predictions of extinction risk. Conservation Ecology 4, 1–17.
Burgman, M. A. (2002). Are listed threatened plant species actually at risk? Australian Journal of Botany 50, 1–13.
| Crossref | GoogleScholarGoogle Scholar |
Campbell, A. J. , and Barnard, H. G. (1917). Birds of North Queensland. Emu 17, 2–15.
Clancy, G. P. (1985). Recent records of Magpie Geese in New South Wales. Australian Birds 19, 41–45.
Cowling, S. J. , and White, D. M. (1972). Breeding of the Magpie Goose at the Serendip Wildlife Research Station. Emu 72, 28–29.
Dexter, N. , and Bayliss, P. (1991). The effect of experimental clutch harvest on numbers of Magpie Geese nests and juvenile recruitment. Wildlife Research 18, 533–538.
| Crossref | GoogleScholarGoogle Scholar |
Dickman, C. R. , Pressey, R. L. , Lim, L. , and Parnaby, H. E. (1993). Mammals of particular conservation concern in the Western Division of New South Wales. Biological Conservation 65, 219–248.
| Crossref | GoogleScholarGoogle Scholar |
Frith, H. J. , and Davies, S. J. J. F. (1961). Ecology of the Magpie Goose, Anseranas semipalmata Latham (Anatidae). CSIRO Wildlife Research 6, 91–141.
Harper, M. J. (1990). The re-establishment of Magpie Geese at Bool Lagoon, South Australia. South Australian Ornithologist 31, 44–47.
Johnsgard, P. A. (1961). Breeding biology of the Magpie Goose. The Wildfowl Trust Annual Report 12, 92–103.
Koh, T. S. , and Harper, M. J. (1988). Lead-poisoning in Black Swans, Cygnus atratus, exposed to spent lead shot at Bool Lagoon Game Reserve, South Australia. Australian Wildlife Research 15, 395–403.
| Crossref | GoogleScholarGoogle Scholar |
Legge, W. V. (1905). List of birds observed at the Great Lake in the month of March. Emu 4, 103–109.
Leslie, D. J. (2001). Effect of river management on colonially-nesting waterbirds in the Barmah-Millewa forest, south-eastern Australia. Regulated Rivers: Research and Management 17, 21–26.
| Crossref | GoogleScholarGoogle Scholar |
McGilp, J. N. (1919). Notes from the Lake Frome district. South Australian Ornithologist 4, 70–74.
Nye, E. R. , and Dickman, C. R. (2005). Activity budgets and habitat use of the Green Pygmy-goose (Nettapus pulchellus) on dry-season refuges in Kakadu National Park, Northern Territory. Emu 105, 217–222.
| Crossref | GoogleScholarGoogle Scholar |
Osborne, S. W. P. (1940). Pied goose, Anseranus semipalmatus. South Australian Ornithologist 15, 100.
Petherick, E. A. (1901). Forgotton feathers. Emu 1, 24–25.
Ryan, C. S. (1907). The President’s address: the protection of native birds. Emu 6, 95–103.
Smith, A. P. , and Quin, D. G. (1996). Patterns and causes of extinction and decline in Australian conilurine rodents. Biological Conservation 77, 243–267.
| Crossref | GoogleScholarGoogle Scholar |
White, S. A. (1912). Bird-life in the Riverina. Emu 11, 207–209.
White, H. L. (1917). North Australian Birds. Emu 16, 117–158.
Whitehead, P. J. (1991). Magpie Geese, mangoes and sustainable devlopment. Australian Natural History 23, 784–792.
Whitehead, P. J. , and Tschirner, K. (1990). Magpie Goose, Anseranas semipalmata, nesting on the Mary River floodplain, Northern Territory, Australia: extent and frequency of flooding losses. Australian Wildlife Research 17, 147–157.
| Crossref | GoogleScholarGoogle Scholar |
Whitehead, P. J. , and Tschirner, K. (1991). Lead shot ingestion and lead poisoning of Magpie Geese. Biological Conservation 58, 99–118.
| Crossref | GoogleScholarGoogle Scholar |
Whitehead, P. J. , Wilson, B. A. , and Bowman, D. M. J. S. (1990). Conservation of coastal wetlands of the Northern Territory of Australia: the Mary River floodplain. Biological Conservation 52, 85–111.
| Crossref | GoogleScholarGoogle Scholar |
Wilson, R. F. (1992). Censuses and breeding records of the Magpie Goose Anseranas semipalmata on the coastal wetlands of central Queensland. Corella 16, 119–123.
Wolstenholme, H. (1925). Notes on the birds observed during the Queensland Congress and campout. Emu 24, 243–251.