1. Environmental Change Institute, Oxford Centre for the Environment, University of Oxford, South Parks Road, Oxford OX1 3QY, UK
2. Department of Geography, University of the Free State, PO Box 339, Bloemfontein 9300, South Africa
3. Department of Earth and Environmental Sciences, KU Leuven, Leuven-Heverlee B-3001, Belgium
4. Institute of Earth and Environmental Sciences, Maria Curie-Skłodowska University, 20-400 Lublin, Poland
5. Department of Geography, School of Environment, Education and Development, University of Manchester, Oxford Road, Manchester M13 9PL, UK