Natural vegetation responses to atmospheric nitrogen deposition - critical levels and loads of nitrogen for vegetation growing on contrasting native soils

Carroll, J.A.; Caporn, S.J.M. ; Morecrof, M.D. ; Lee, J.A.; Johnson, D.; Taylor, A. ; Leake, J.R.; Campbell, C.D. ; Cawley, L.; Lei, Y.; Read, D.J.