David Lindenmayer is a Research Professor in the Center for Resource & Environmental Studies at The Australian National University in Canberra. He runs six large-scale landscape studies in south-eastern Australia and has written 18 books and 260 scientific articles on conservation biology, landscape ecology, wildlife biology, forest ecology and management, and woodland conservation and management. Richard Hobbs is an Australian Professorial Fellow in the School of Environmental Science at Murdoch University in Perth, Australia. He has broad interests spanning restoration ecology, conservation biology, landscape ecology and vegetation management. He has published 17 books and 266 scientific articles in these areas of research and is a Fellow of the Australian Academy of Science.