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	title = {UK Status Report July 2011: Update to empirical critical loads of nitrogen},
	year = {2011},
	pages = {55pp},
	author = {Hall, R.J. and Emmett, B. and Garbutt, A. and Jones, L and Rowe, E. and Sheppard, L and Vanguelova, E. and Pitman, R. and Britton, A. and Hester, A. and Ashmore, M. and Power, S. and Caporn, S.}
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@article {1696,
	title = {Global assessment of nitrogen deposition effects on terrestrial plant diversity: a synthesis},
	journal = {Ecological Applications},
	volume = {20},
	year = {2010},
	pages = {30-59},
	keywords = {arctic polar semidesert, arctic-alpine ecosystems, atmospheric deposition, boreal ecosystems, critical loads, diversity, ecoregions, long-term, mediterranean ecosystems, n-deposition, nitrogen deposition, nutrient limitation, racomitrium-lanuginosum, simulated environmental-change, southern california, species richness, temperature ecosystems, terrestrial ecosystems, tropical ecosystems, western united-states},
	author = {Bobbink, R. and Hicks, K. and Galloway, J. and Spranger, T. and Alkemade, R. and Ashmore, M. and Bustamante, M. and Cinderby, S. and Davidson, E. and Dentener, F. and Emmett, B. and Erisman, J. W. and Fenn, M. and Gilliam, F. and Nordin, A. and Pardo, L. and de Vries, W.}
}
