1. a Centre for Ecology and Hydrology Monks Wood , Section for Earth Observation , Abbots Ripton, Huntingdon PE28 2LS, UK
2. b University of Leicester , Department of Geography , Bennett Building, University Road, Leicester LE1 7RH, UK
3. c Centre for Environmental Change and Sustainability (CECS) , University of Edinburgh , John Muir Building, Mayfield Road, Edinburgh EH9 3JK, UK
4. d Department of Geography , University of Wales , Swansea SA2 8PP, UK
5. e School of GeoSciences , University of Edinburgh , Drummond Street, Edinburgh EH8 9XP, UK