@article {1517, title = {Contribution of acidification and eutrophication to declines in species richness of calcifuges grasslands along a gradient of atmospheric nitrogen deposition.}, journal = {Functional Ecology}, volume = {24}, year = {2010}, pages = {478-484}, author = {Stevens, C.J. and Thompson, K. and Grime, J.P. and Long, C.J. and Gowing, D.J.G.} }