%0 Report %D 2011 %T Collation of evidence of nitrogen impacts on vegetation in relation to UK biodiversity objectives %A Stevens, C.J. %A Smart, S.M. %A Henrys, P. %A Maskell, L.C. %A Walker, K.J. %A Preston, C.D. %A Crowe, A. %A Rowe, E. %A Gowing, D.J. %A Emmett, B.A. %I JNCC %G eng