1. School of Geography and the Environment; University of Oxford; South Parks Road OX1 3QY Oxford U.K.
2. Center for Macroecology, Evolution and Climate, National Museum of Natural History; University of Copenhagen; Universitetsparken 15 2100 Copenhagen Denmark
3. Departamento de Ciências Agrárias, cE3c - Centre for Ecology; Evolution and Environmental Changes/Azorean Biodiversity Group and Universidade dos Açores; Rua Capitão João d'Ávila, São Pedro 9700-042 Angra do Heroísmo Terceira, Azores Portugal
4. Biodiversity, Macroecology and Conservation Biogeography; University of Göttingen; Büsgenweg 1 37077 Göttingen Germany
5. Synthesis Centre of the German Centre for Integrative Biodiversity Research (iDiv); Deutscher Platz 5e 04103 Leipzig Germany
6. Island Ecology and Biogeography Research Group, Instituto Universitario de Enfermedades Tropicales y Salud Pública de Canarias (IUETSPC); Universidad de La Laguna; Tenerife, Canary Islands 38206 Spain
7. School of Geography; University of Nottingham; NG7 2RD Nottingham U.K.
8. Field Museum of Natural History; 1400 S Lake Shore Drive Chicago IL 60605 U.S.A.
9. Department of Bioscience - Genetics, Ecology and Evolution; Aarhus University; Ny Munkegade 114.2 DK-8000 Aarhus C Denmark
10. Department of Geography and Environmental Studies; University of Hawaii at Hilo; 200 West Kawili Street Hilo HI 96720 U.S.A.
11. Environment and Microbiology Team; Université de Pau et des Pays de l'Adour; IPREM UMR CNRS 5254, BP 1155 64013 Pau Cedex France
12. Section for Ecoinformatics & Biodiversity, Department of Bioscience; Aarhus University; Ny Munkegade 116 8000 Aarhus Denmark
13. Department of Ecology and Taxonomy, Faculty of Biology; National and Kapodistrian University; GR-15784 Athens Greece
14. Unit of Evolutionary Biology/Systematic Zoology, Institute of Biochemistry and Biology; University of Potsdam; Karl-Liebknecht-Strasse 24-25, Haus 26 D-14476 Potsdam Germany