Cationic denudation rates in glacierised basins are considerably higher than the global mean. High specific discharge coupled with rapid dissolution of finely-divided sediment produced by glacial erosion results in high solute flux levels in rivers draining glacierised basins. As solute cc concentration varies inversely with discharge, variation with discharge of solute flux, the product of discharge and solute concentration, relates to the extent to which changes in volume of flow offset changes of concentration. Since the 1970s, in the European Alps, warming air temperatures have resulted in increases in discharge from glacierised catchments.