@article {1496, title = {Evidence of recovery from acidification in the macroinvertebrate assemblages of UK fresh waters: A 20-year time series.}, journal = {Ecological Indicators}, volume = {37}, year = {2014}, pages = {330-340}, author = {Murphy, J.F. and Winterbottom, J.H. and Orton, S. and Simpson, G.L. and Shilland, E.M. and Hildrew, A.G.} } @article {1424, title = {Recovery of UK lakes from acidification: An assessment using combined palaeoecological and contemporary diatom assemblage data.}, journal = {Ecological Indicators}, volume = {37}, year = {2014}, pages = {365-380}, author = {Battarbee, R.W. and Simpson, G.L. and Shilland, E.M. and Flower, R.J. and Kreiser, A. and Yang, H. and Clarke, G.} } @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.} }