1. Institute of Biodiversity, Animal Health and Comparative Medicine, University of Glasgow, Glasgow G12 8QQ, UK
2. Environment and Sustainability Institute, University of Exeter, Penryn, Cornwall TR10 9EZ, UK
3. Marine Institute, Plymouth University, Plymouth, Devon PL4 8AA, UK
4. Centre for Ecology and Conservation, University of Exeter, Penryn, Cornwall TR10 9EZ, UK
5. Institut für Vogelforschung ‘Vogelwarte Helgoland’, An der Vogelwarte 21, Wilhelmshaven 26386, Germany
6. Greenland Institute of Natural Resources, Kvioq 2, 3900 Nuuk, Greenland
7. Institut de Recerca de la Biodiversitat (IRBio) and Departament de Biologia Animal, Universitat de Barcelona, Av. Diagonal 643, Barcelona 08028, Spain
8. CEFE UMR 5175, CNRS—Université de Montpellier—Université Paul-Valéry Montpellier—EPHE, 1919 route de Mende, 34293 Cedex 05, Montpellier, France
9. DST/NRF Centre of Excellence, Percy FitzPatrick Institute, University of Cape Town, Rondebosch 7701, South Africa
10. Institute of Ecology, Friedrich-Schiller University, 07743 Jena, Germany
11. School of Environmental Sciences, University of Liverpool, Liverpool L69 3GP, UK
12. British Antarctic Survey, Natural Environment Research Council, Cambridge CB3 0ET, UK
13. Biodiversity Research Institute, 276 Canco Road, Portland, ME 04103, USA