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RESEARCH ARTICLE
Contents Vol 28(2)

An examination of the Stafford Smith–Morton ecological model: a case study in the Tanami Desert, Australia

R. Southgate A C D , G. Allan B and B. Ostendorf C
+ Author Affiliations
- Author Affiliations

A Biodiversity Conservation Unit, Department of Infrastructure, Planning and Environment, PO Box 2130, Alice Springs, NT 0871, Australia.

B Bushfires Council of the Northern Territory, PO Box 2533, NT 0871, Australia.

C School of Earth and Environmental Sciences, University of Adelaide, SA 5006, Australia.

D Corresponding author. Email: southgate@kin.net.au

The Rangeland Journal 28(2) 197-210 https://doi.org/10.1071/RJ06022
Submitted: 3 April 2006  Accepted: 2 June 2006   Published: 9 November 2006

Abstract

The pattern of substrate, climatic, vegetation and fire features in the Tanami Desert were considered in relation to the ecological model for arid Australia proposed by Stafford Smith and Morton. The nature and accuracy of spatial data used to describe and quantify the pattern of the landscape features were also examined. Components of the ecological model were accurately reflected in the study area. For example, substrates identified as the most productive amounted to less than 8% of the region, and there was substantial spatial and interannual variation in rainfall. However, a strong climatic gradient was also evident in the study area, a feature not accommodated for in the model proposed by Stafford Smith and Morton. Vegetative ground and shrub cover decreased from north to south and was strongly associated with increasing aridity and lower maximum and minimum temperatures. Spinifex (Triodia spp.) cover showed a curvilinear response. The spatial data for both substrate and fire history were reasonably accurate (around 90%) when compared with ground-truthed data, and is considered suitable to reflect ecological pattern and process in the Tanami Desert. Both the adequacy of the ecological model and accuracy of spatial data are important issues to consider before the development of statistical modelling for prediction of species distribution.

Additional keywords: fire, substrate, gradient, rainfall, temperature, arid Australia.


Acknowledgments

We are indebted for the assistance provided by Aboriginal people accompanying us on the field trips including Pharlap Dixon, Engineer Jack, Shorty Jangala, Darby Jampitjinpa, Irene Dixon, Tommy Driver, Jerard Driver, Lynnette Driver, Cindy Bartlett, Neville Poulson and Sarah Napangangka. Chris Grant assisted with data collection during part of the random plot survey. Sue Cathew and Jim Puckridge provided valuable comments on the manuscript. Finally, the study could not have been completed without support of the Northern Territory Parks and Wildlife Commission and funding from the Natural Heritage Trust. Part of the funding for the aerial survey was provided by the Easter Bilby fund supported by Coles Myer.


References


Allan G. E. (1993). ‘The fire history of central Australia. CSIRO/CCNT Bushfire Research Project.’ (CSIRO: Alice Springs.)

Allan G. E. , and Southgate R. I. (2002). Fire regimes in the spinifex landscapes of Australia. In: ‘Flammable Australia’. (Eds R. A. Bradstock, J. E. Williams and M. A. Gill.) pp. 145–176. (Cambridge University Press: Cambridge.)

Austin M. P. (1980) Searching for a model to use in vegetation analysis. Vegetatio 42, 11–21.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Austin M. P. (2002) Spatial prediction of species distribution: an inference between ecological theory and statistical modelling. Ecological Modelling 157, 101–118.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Austin M. P., Heyligers P. C. (1989) Vegetation survey design for conservation: Gradsect sampling of forests in North-eastern New South Wales. Biological Conservation 50, 13–32.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Austin M. P., Pausas J. G., Nicholls A. O. (1996) Patterns of tree species richness in relation to environment in southeast New South Wales, Australia. Australian Journal of Ecology 21, 154–164.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Cols K. , and Whitaker R. (2001). ‘The Australian weather book.’ (Reed New Holland: Sydney.)

Congalton R. G. (1988) A comparison of sampling schemes used in generating error matrices for assessing the accuracy of maps generated from remotely sensed data. Photogrammetric Engineering and Remote Sensing 54, 593–600. open url image1

Congalton R. G. , and Green C. (1999). ‘Assessing the accuracy of remotely sensed data: principles and practices.’ (Lewis Publishers: New York.)

Foulkes J. , Foster E. and de Preu N. (1995). ‘Palaeodrainage systems and the conservation of Australian deserts.’ (Conservation Commission of the Northern Territory: Alice Springs.)

Gibson D. F. (1986). ‘A biological survey of the Tanami Desert in the Northern Territory.’ (Conservation Commission of the Northern Territory: Alice Springs.)

Griffin G. F. (1989) An enhanced wheel-point method for assessing cover, structure and heterogeneity in plant communities. Journal of Range Management 42, 79–81. open url image1

Griffin G. F. (1992). Will it burn – should it burn? Management of the spinifex grasslands of inland Australia. In: ‘Desertified grasslands: their biology and management’. (Ed. G. P. Chapman.) pp. 60–76. (The Linnean Society: London.)

Griffin G. F., Friedel M. H. (1985) Discontinuous change in central Australia: some implications of major ecological events for land management. Journal of Arid Environments 9, 63–80. open url image1

Guisan A., Zimmerman N. E. (2000) Predictive habitat distribution models in ecology. Ecological Modelling 135, 147–186.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Harrington G. N. , Wilson A. D. , and Young M. D. (1984). ‘Management of Australia’s rangelands.’ (CSIRO: Canberra.)

Jaksic F. M. (2001) Ecological effects of El Nino in terrestrial ecosystems of western South America. Ecography 24, 241–254.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Jessop J. (1981). ‘Flora of central Australia.’ (Australian Systematic Botany Society: Sydney.)

Jones D. , and Weymouth G. (1997). ‘An Australian monthly rainfall data set.’ (Bureau of Meteorology: Melbourne.)

Latz P. K. (1995). ‘Bushfires and bushtucker.’ (IAD Press: Alice Springs.)

Louw G. , and Seeley M. (1982). ‘Ecology of desert organisms.’ (Longman: London.)

Mackey B. , Lindenmayer D. , Gill M. , McCarthy M. , and Lindesay J. (2002). ‘Wildlife, fire and future climate: a forest ecosystem analysis.’ (CSIRO Publishing: Melbourne.)

Morton S. R. (1990) The impact of European settlement on the vertebrate animals of arid Australia: a conceptual model. Proceedings of the Ecological Society of Australia 16, 201–213. open url image1

Nix H. (1982). Environmental determinants of biogeography and evolution. In: ‘Evolution of the flora and fauna of arid Australia’. (Eds D. W. Barker and P. J. M. Greenslade.) pp. 47–66. (Peacock: Frewville.)

Paltridge R. M., Southgate R. I. (2001) The effect of habitat type and seasonal conditions on fauna in two areas of the Tanami Desert. Wildlife Research 28, 247–260.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Predavec M. (1994) Population dynamics and environmental changes during natural irruptions of Australian desert rodents. Wildlife Research 21, 569–582.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Schmidt-Nielsen K. (1997). ‘Animal physiology: adaptation and environment.’ (Cambridge University Press: Cambridge.)

Southgate R. I., Masters P. (1996) Fluctuations of rodent populations in response to rainfall and fire in a central Australian hummock grassland dominated by Plectrachne schinzii. Wildlife Research 23, 289–303.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Southgate R. I., Paltridge R., Masters P., Ostendorf B. (2006) Modelling introduced predator and herbivore distribution in the Tanami Desert, Australia. Journal of Arid Environments In press 67, open url image1

Stafford Smith D. M., Morton S. R. (1990) A framework for the ecology of arid Australia. Journal of Arid Environments 18, 255–278. open url image1

Thackway R. , and Cresswell I. D. (Ed.) (1995). ‘An interim biogeographic regionalisation for Australia: a framework for establishing the national system of reserves, Version 4.0.’ (Australian Nature Conservation Authority: Canberra.)

Westoby M. (1980) Elements of a theory of vegetation dynamics in rangelands. Israel Journal of Botany 28, 169–194. open url image1

Wilson B. A. , Brocklehurst P. S. , Clark M. J. , and Dickinson K. J. M. (1990). ‘Vegetation survey of the Northern Territory. Technical Report 49.’ (Conservation Commission of the Northern Territory: Darwin.)

Woinarski J. C. Z., Fisher A. (1995) Wildlife of lancewood (Acacia shirleyi) thickets and woodlands in northern Australia. 1. Variation in vertebrate species composition across the environmental range occupied by lancewood vegetation in the Northern Territory. Wildlife Research 22, 379–411.
| Crossref | GoogleScholarGoogle Scholar | open url image1

Woinarski J. C. Z., Recher H. F. (1997) Impact and response: a review of the effects of fire on the Australian avifauna. Pacific Conservation Biology 3, 183–205. open url image1










Appendix 1.  The selection process used to define substrate categories from the geological map unit information supplied with the Australian Geological Survey Office 1:250 000 geological maps
A1