1. Geography Department, Humboldt-University Berlin, Berlin, Germany
2. Integrative Research Institute on Transformations of Human-Environment Systems (Iri THESys), Humboldt-University Berlin, Berlin, Germany
3. Earth and Life Institute, UCLouvain, Louvain-la-Neuve, Belgium
4. Fonds de la Recherche Scientifique - FNRS, Brussels, Belgium