Aerial surveys on Angas Downs 2012

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By , November 15, 2012 10:03 am

Annual aerial survey monitoring was conducted  on Angas Downs IPA in July 2012. These surveys complement surveys also conducted in 2010 & 2011. IPA Rangers and Jennifer Smits (AWS) counted animals seen at low level and 200 m on either side of the aircraft. Species targeted /observed included camels, kangaroos, horses and cattle.

These studies are vital to understanding populations of kangaroos and pressures from camel and horse populations on the property and hence native wildlife. Some results are published below. No significant increase or decrease in any of the surveyed species was recorded between 2010-2012.

Since Angas Downs is such a vast area to survey, the variance and error of the datasets collected make it difficult to assess any significant change in the estimated population density. Good thing is Malu (red kangaroo) populations appear to be stable, and feral populations of horses and camels are appear to be decreasing (or not significantly increasing), undoubtedly due to the management actions of the IPA rangers. Densities of red kangaroos across Angas were estimated at 1.02 per sq km in 2010, and 1.13 per sq km in 2012. It was found that the southern area of the property was much more productive and watered, and supported more head of kangaroos than the northern sand dunes. Hence the aerial surveys were split in the north and south for 2012.

A report is being finalised and will be available soon. For more information on past Aerial surveys click here.


 




Chapter in Book on Food Security – use of native animals

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By , November 13, 2012 10:45 am

George Wilson contributes chapter on native animals as food producers in a book published this week by Springer.     A promotional free preview of the entire  Book  Food Security in Australia, edited by Q. Farmar-Bowers, J. Millar, and V. Higgins is available

The chapter describes how few native animals, other than fish and crustaceans, are used in food production by the humans who recently arrived in Australia. Even Aboriginal Australians have now become reliant on introduced species which evolved elsewhere. In part, this is due to cultural dominance, first of the British and then other western perspectives in last 200 years. It is also because introduced species generally have higher production rates following centuries of agricultural selection and recently, energy-intensive farming practices. But it need not always be that exotic species are superior, particularly in the context of climate change. Replacing cattle and sheep on the rangelands with well-adapted species such as kangaroos and making greater use of them just as Aborigines did for 40,000 years, is a prospect worthy of further investigation.