Nitrogen deposition threatens species richness of grasslands across Europe
C.J. Stevens
C. Duprè
E. Dorland
C. Gaudnik
D.J.G. Gowing
A. Bleeker
M. Diekmann
D. Alard
R. Bobbink
D. Fowler
E. Corcket
J.O. Mountford
V. Vandvik
P. Arild Aarrestad
S. Muller
N.B. Dise
Environmental Pollution (2010) 158: 2940-2945.