@article {1462,
	title = {Base cation depletion, eutrophication and acidification of species-rich grasslands in response to long-term simulated nitrogen deposition.},
	journal = {Environmental Pollution},
	volume = {155},
	year = {2008},
	pages = {336-349},
	author = {Horswill, P. and O{\textquoteright}Sullivan, O. and Phoenix, G.K. and Lee, J.A. and Leake, J.R.}
}
@article {1421,
	title = {Bryophyte physiological responses to, and recovery from, long-term nitrogen deposition and phosphorus fertilisation in acidic grassland.},
	journal = {New Phytologist },
	volume = {180},
	year = {2008},
	pages = {864-874},
	author = {Arroniz-Crespo, M. and Leake, J.R. and Horton, P. and Phoenix, G.K.}
}
