1. Centre for Ecology & Hydrology, Penicuik, Midlothian, EH26 0QB, U.K.
2. School of GeoSciences, University of Edinburgh, Edinburgh, EH9 3FF, U.K.
3. Earth Surface Science Institute, School of Earth and Environment, University of Leeds, Leeds, LS2 9JT, U.K.
4. Craigencalt Rural Community Trust, Kinghorn, Fife, KY3 9YG, U.K.
5. School of Environmental Sciences, University of Hull, Hull, HU6 7RX, U.K.
6. School of Animal, Rural and Environmental Sciences, Nottingham Trent University, Nottinghamshire, NG25 0QF, U.K.
7. Environmental Change Research Centre, Department of Geography, University College London, London, WC1E 6BT, U.K.