Henrik Ernstson,^* Sander E. van der Leeuw,^** Charles L. Redman,^*** Douglas J. Meffert,^**** George Davis,^***** Christine Alfsen,^****** Thomas Elmqvist<sup>*******


*</sup>Henrik Ernstson () is an ecologist/sociologist, who draws on systems ecology, sociology, and political ecology to explore the governance and politics of urban ecologies. He is currently a research fellow at the Department of Systems Ecology and Stockholm Resilience Centre, Stockholm University with an upcoming Post Doctoral Fellowship at the African Centre for Cities, University of Cape Town. Address: Department of Systems Ecology and Stockholm Resilience Centre, Stockholm University, 10691 Stockholm, Sweden. e-mail: henrik@ecology.su.se
^**Sander E. van der Leeuw is an archaeologist and historian by training. Apart from sustainability, his interest lies in the study of innovation and the application of Complex Adaptive Systems theory to socio-environmental systems. He is a Professor of Anthropology and director of the School of Human Evolution and Social Change, Arizona State University. Address: School of Human Evolution and Social Change, Arizona State University, SHESC—ASU, 900 S. Cady Mall, P.O. Box 872402, Tempe, AZ 85287-2402, USA. e-mail: vanderle@asu.edu
^***Charles L. Redman is an anthropologist with interest in sustainable landscapes, rapid urbanizing regions, urban ecology, and environmental education. He is a professor at the School of Human Evolution and Social Change and director at the School of Sustainability, both at Arizona State University. Address: School of Human Evolution and Social Change and the School of Sustainability, Arizona State University, P.O. Box 875502, Tempe, AZ 85287-5502, USA. e-mail: charles.redman@asu.edu
^****Douglas J. Meffert is an environmental scientist focusing on urban and coastal sustainability related to climate change and disaster. He is the Eugenie Schwartz Professor of River and Coastal Studies and Deputy Director at the Tulane/Xavier Center for Bioenvironmental Research at Tulane University and is Faculty Associate at the Lincoln Institute of Land Policy in Cambridge, MA. Address: Tulane/Xavier Center for Bioenvironmental Research, Tulane University, Health & Environmental Research Bldg, 1324 Tulane Avenue, SL-3, New Orleans, Louisiana 70112, USA. e-mail: dmeffert@tulane.edu
^*****George Davis has a long-term experience of the practice of urban nature conservation in Cape Town. He is the Director of the Urban Conservation Programme at the South African National Biodiversity Institute (SANBI). Address: Urban Conservation Programme” South African National Biodiversity Institute (SANBI), Kirstenbosch National Botanical Garden, SANBI, Private Bag X7, Claremont 7735, South Africa. e-mail: davis@sanbi.org
^******Christine Alfsen has a long-term experience in international policy making toward sustainable cities. She is a director and coordinator of the Columbia University/UNESCO Joint Program on Biosphere and Society (CUBES) and involved in the Urban Biosphere Network (URBIS). Address: Columbia University/UNESCO Joint Program on Biosphere and Society (CUBES) and Urban Biosphere Network (URBIS), UNESCO, UNESCO Office in New York, 2 United Nations Plaza, Room 900, New York, NY 10017, USA. e-mail: alfsen-norodom@un.org
^*******Thomas Elmqvist is a systems ecologist with tropical biology and urban ecology as specialty. He is the Professor in Natural Resource Management at the Department of Systems Ecology and Theme Leader of the Urban Theme at Stockholm Resilience Centre, both at Stockholm University. Address: Department of Systems Ecology and Stockholm Resilience Centre, Stockholm University, 10691 Stockholm, Sweden. e-mail: thomase@ecology.su.se