Institution: | a Department of Geography, Aquatic Environments Research Centre, University of Reading, Reading RG6 6AB, UK b Centre for Ecology and Hydrology, Wallingford OX10 8BB, UK c Department of Geography, University of Aberdeen, Aberdeen AB24 3UF, UK d Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen AB15 8QH, UK e Environment Department, University of York, York YO10 5DD, UK |