1. Hungarian Department of Biology and Ecology, Babes-Bolyai University, Cluj-Napoca, Romania
2. Department of Economics and Management, Faculty of Agriculture and Forestry Sciences, University of Helsinki, Helsinki, Finland
3. Institute for Environmental Studies (IVM), Vrije Universiteit Amsterdam, Amsterdam, The Netherlands
4. Internet Interdisciplinary Institute (IN3), Universitat Oberta de Catalunya (UOC), Castelldefels, Barcelona, Spain
5. Department of Agricultural Economics and Rural Development, University of Göttingen, Göttingen, Germany
6. Helsinki Institute of Sustainability Science (HELSUS), University of Helsinki, Helsinki, Finland
7. Ecosystems and Environment Research Program, Faculty of Biological and Environmental Sciences, University of Helsinki, Helsinki, Finland
8. Department of Landscape Architecture, Planning and Management, Swedish University of Agricultural Sciences, Alnarp, Sweden