1. School of Biosciences University of Sheffield Sheffield UK
2. Institute of Zoology Zoological Society of London London UK
3. Biodiversity, Ecology and Conservation Group International Institute for Applied Systems Analysis (IIASA) Laxenburg Austria
4. Centre for Biodiversity and Environment Research, Department of Genetics, Evolution and Environment University College London London UK
5. Department of Life Sciences Natural History Museum London UK
6. Leverhulme Centre for Demographic Science, Nuffield College University of Oxford Oxford UK