Affiliation: | 1. Centre for Ecology and Hydrology Dorset, Winfrith Technology Centre, Dorset, U.K;2. The School of Biological and Chemical Sciences, Queen Mary University of London, London, U.K;3. Game and Wildlife Conservation Trust (GWCT) – Salmon and Trout Research Centre, The River Laboratory, Dorset, U.K;4. Department of Biosciences, College of Life and Environmental Sciences, University of Exeter, Devon, U.K |