This study was designed to develop monitoring techniques based on aerial survey and to evaluate the effectiveness of control methods for large feral herbivores (especially goats) in the mulga woodlands. It was conducted on a study site in south-western Queensland encompassing Currawinya National Park. Two control programs were undertaken on the park: a ground-based shooting program and a two-stage live-muster and aerial culling program.
Population estimates of feral goats based on 100 m strip counts from a fixed-wing aircraft were 4.6/km2 for the survey block for the initial survey with a decline to less than 2/km2 by the end of the project. It was concluded that fixed-wing aerial surveys provide an accurate estimate of the density of large feral herbivores, such as goats.
The first control program, based on ground-based shooting, was of only limited success. The second control program, based on contract mustering with the aid of fixed-wing aircraft followed by aerial culling using a helicopter, was very successful in reducing the number of feral goats and other feral animals. This approach represents best practice management of feral goats in the mulga woodlands. The effect of the reduction in goat numbers on goat impact within the park is yet to be evaluated.
Full-text publications from the Australian Rangelands Society (ARS) Biennial Conference Proceedings (1997-), Rangeland Journal (ARS/CSIRO; 1976-), plus videos and other resources about the rangelands of Australia.