1. Department of Geography, University College London, Gower Street, London WC1E 6BT, UK
2. International Institute for Applied Systems Analysis (IIASA), Schlossplatz 1, Laxenburg 2361, Austria
3. Université de Paris, INSERM U1284, Center for Research and Interdisciplinarity (CRI), 8bis Rue Charles V, Paris 75004, France
4. Helmholtz Centre for Environmental Research - UFZ, Department of Ecosystem Services, Permoserstr. 15, 04318 Leipzig, Germany
5. German Centre for Integrative Biodiversity Research (iDiv) Halle-Jena-Leipzig, Puschstr. 4, 04103 Leipzig, Germany
6. Museumfür Naturkunde—Leibniz Institute for Evolution and Biodiversity Science, Berlin, Germany
7. European Citizen Science Association (ECSA), c/o Museum für Naturkunde, Invalidenstr. 43, Berlin 10115, Germany
8. Earthwatch, Mayfield House, 256 Banbury Road, Oxford OX2 7DE, UK
9. Centre for Social Innovation GmbH, Linke Wienzeile 246, Vienna 1150, Austria
10. IHE Delft Institute for Water Education, Westvest 7, AX Delft 2611, The Netherlands
11. Environmental Social Science Research Group (ESSRG), Ferenciek Tere 2, Budapest 1053, Hungary
12. Nelson Institute, University of Wisconsin-Madison, 550 N Park ST, Madison, WI 53706, USA
13. Technische Hochschule Wildau, Hochschulring 1, Wildau 15745, Germany
14. The University of Sydney, Australia
15. Maremma Natural History Museum, Strada Corsini 5, Grosseto 58100, Italy
16. University of Natural Resources and Life Sciences, University of Vienna, Gregor Mendel Strasse 33, Vienna 1180, Austria
17. Kaunas University of Technology, K. Donelaičio g. 73, Kaunas LT-44249, Lithuania
18. Naturhistorisches Museum Wien, Burgring 7, Vienna 1010, Austria