1. Pond Restoration Research Group, Environmental Change Research Centre, Department of Geography, University College London, London, UK
2. Natural History Museum, London, UK
3. Statistical Ecology at Kent, School of Mathematics, Statistics and Actuarial Science, University of Kent, Canterbury, UK
4. British Trust of Ornithology, Thetford, UK
5. Wildfowl & Wetlands Trust, Slimbridge, UK