1. Faculty of Agriculture and Environment University of Sydney Sydney NSW 2006 Australia
2. Department of Global Ecology Carnegie Institution of Washington 260 Panama Street Stanford CA 94305 USA
3. Hawkesbury Institute for the Environment University of Western Sydney Hawkesbury Campus Locked Bag 1797 Penrith NSW 2751 Australia
4. Research School of Biology The Australian National University Acton ACT 0200 Australia
5. Centre for Tropical Environmental and Sustainability Science (TESS) School of Earth and Environmental Sciences James Cook University Cairns Qld 4878 Australia
6. Earth and Biosphere Institute School of Geography University of Leeds Leeds UK
7. Earth and Environmental Sciences Division Los Alamos National Laboratory Los Alamos NM 87545 USA
8. Environmental Sciences Division Oak Ridge National Laboratory Oak Ridge TN 37830 USA