@article {1490, title = {Trends in the hydrochemistry of acid-sensitive surface waters in the UK 1988{\textendash}2008.}, journal = {Ecological Indicators}, year = {2014}, pages = {287-303}, author = {Monteith, D.T. and Evans, C.D. and Henrys, P.A. and Simpson, G.L. and Malcolm, I.A.} }