Affiliation: | Centre for Ecology and Hydrology, Banchory Research Station, Hill of Brathens, Glassel, Banchory, Aberdeenshire AB31 4BW, Scotland, UK;;Department of Statistics and Modelling Science, University of Strathclyde, Livingstone Tower, Glasgow G1 1XT, Scotland, UK;and;FRS Freshwater Laboratory, Pitlochry, Perthshire PH16 5LB, Scotland, UK |