1. CE3C - Centre for Ecology; Evolution and Environmental Changes / Azorean Biodiversity Group and Universidade dos Açores - Departamento de Ciências Agrárias; 9700-042 Angra do Heroísmo Açores Portugal
2. Department of Biology; CBMA - Centre for Molecular and Environmental Biology; University of Minho; 4710-087 Braga Portugal
3. Finnish Museum of Natural History; University of Helsinki; P.O. Box 17, 00014 Helsinki Finland
4. Department of Ecology and Taxonomy; Faculty of Biology; National and Kapodistrian University; Athens GR-15784 Greece
5. Conservation Biogeography and Macroecology Programme; School of Geography and the Environment; University of Oxford, South Parks Road; Oxford OX1 3QY UK