1. Natural History Museum; University of Tartu; Vanemuise 46 Tartu 51014 Estonia
2. Organismal and Evolutionary Biology Research Programme; University of Helsinki; PO Box 65 Helsinki FI-00014 Finland
3. Department of Biological and Environmental Sciences; University of Gothenburg; Box 461 405 30 Göteborg Sweden
4. Gothenburg Global Biodiversity Centre; Box 461 SE-405 30 Göteborg Sweden
5. Royal Botanic Gardens, Kew; Richmond Surrey TW9 3DS UK
6. Department of Agricultural Sciences; University of Helsinki; PO Box 27 Helsinki FI-00014 Finland
7. Centre for Biodiversity Dynamics; Department of Biology; Norwegian University of Science and Technology; N-7491 Trondheim Norway