1. Department of Zoology; University of Oxford; South Parks Road Oxford OX1 3PS United Kingdom
2. Spatial Foodweb Ecology Group; Department of Agricultural Sciences; University of Helsinki; PO Box 27, Latokartanonkaari 5 Helsinki FI-00014 Finland
3. Lancaster Environment Centre; University of Lancaster; Lancaster United Kingdom
4. UCD School of Agriculture and Food Science; UCD; Dublin 4 Ireland
5. Department of Life Sciences; Imperial College London; Silwood Park Campus Ascot SL5 7PY United Kingdom
6. Ecosystem Management; Department of Environmental Systems Science; Institute of Terrestrial Ecosystems; ETH Zurich; Universitatstrasse 16 Zurich 8092 Switzerland
7. Centre for Environmental Change and Human Resilience; University of Dundee; Dundee United Kingdom
8. Department of Ecology; Swedish University of Agricultural Sciences; Box 7044 Uppsala 750 07 Sweden