1. Centre for Mined Land Rehabilitation, Sustainable Minerals Institute The University of Queensland Brisbane Queensland 4067 Australia
2. Research Institute of Environment and Livelihoods Charles Darwin University Darwin Northern Territory 0815 Australia
3. School of Ecosystem and Forest Sciences The University of Melbourne Parkville Victoria 3010 Australia
4. Department of Climate Change, Energy, the Environment and Water Office of the Supervising Scientist Darwin Northern Territory 0820 Australia