@article {2040,
	title = {Mapping Critical Levels for Vegetation: Chapter 3},
	year = {2017},
	month = {10/2017},
	abstract = {<p>This fully revised version of Chapter 3 of the ICP Vegetaition report includes updates to the critical levels for ozone agreed at the 30th ICP Vegetation Task Force Meeting, 14-17 February, 2017, Poznan, Poland. The critical levels for SO2, NOX and NH3 and associated text have not been changed since the previous version. This version was published in April 2017 (minor edits October 2017).</p>},
	url = {https://icpvegetation.ceh.ac.uk/publications/documents/FinalnewChapter3v4Oct2017_000.pdf},
	author = {Defra}
}
@article {1702,
	title = {Inertia in an ombrotrophic bog ecosystem in response to 9 years{\textquoteright} realistic perturbation by wet deposition of nitrogen, separated by form.},
	journal = {Global Change Biology},
	volume = {20},
	year = {2014},
	pages = {566-580},
	keywords = {ammonium, atmospheric nitrogen, boreal mire, calluna, calluna-vulgaris, chronology, cover, critical loads, dry heathland, field manipulation, global change, growth, n deposition, nitrate, peatland, plant, sphagnum bogs, sphagnum capillifolium, vegetation},
	author = {Sheppard, L. J. and Leith, I. D. and Mizunuma, T. and Leeson, S. and Kivimaki, S. and Cape, J. N. and van Dijk, N. and Leaver, D. and Sutton, M. A. and Fowler, D. and Van den Berg, L. J. L. and Crossley, A. and Field, C. and Smart, S.}
}
@article {1568,
	title = {Inertia in an ombrotrophic bog ecosystem in response to nine years{\textquoteright} realistic perturbation by wet deposition of nitrogen, separated by form.},
	journal = {Global Change Biology},
	volume = {20},
	year = {2014},
	pages = {566-580},
	author = {Sheppard L.J. and Leith, I.D. and Mizunuma, T. and Leeson, S. and Kivimaki, S. and Cape, J.N. and van Dijk, N. and Leaver, D. and Sutton, M.A. and Fowler, D. and Van Den Berg, L.J.L. and Crossley, A. and Field, C. and Smart, S.}
}
@article {1553,
	title = {Analysis and interpretation of 25 years of ozone observations at the Mace Head Atmospheric Research Station on the Atlantic Ocean coast of Ireland from 1987 to 2012.},
	journal = {Atmospheric Environment},
	volume = {80},
	year = {2013},
	pages = {361-368},
	author = {Derwent, R.G. and Manning, A.J. and Simmonds, P.G. and Spain, T.G. and O{\textquoteright}Doherty, S.}
}
@article {1495,
	title = {A diagnostic biotic index for assessing acidity in sensitive streams in Britain.},
	journal = {Ecological Indicators},
	volume = {24},
	year = {2013},
	pages = {562-572},
	author = {Murphy, J.F. and Davy-Bowker, J. and McFarland, B. and Ormerod, S.J.}
}
@article {1679,
	title = {Inertia in an ombrotrophic bog ecosystem in response to nine years{\textquoteright} realistic perturbation by wet deposition of nitrogen, separated by form},
	journal = {Global change Biology },
	year = {2013},
	author = {Sheppard, L.J. and Leith, I.D. and Mizunuma, T. and Leeson, S. and Kivimaki, S.K. and Cape, J.N. and van Dijk, N. and Leaver, D. and Sutton, M.A. and Fowler, D. and Van Den Berg, L.J.L. and Crossley, A. and Field, C. and Smart, S.M.}
}
@article {1569,
	title = {PK additions modify the effects of N dose and form on species composition, species litter chemistry and peat chemistry in a Scottish peatland.},
	journal = {Biogeochemistry},
	volume = {116},
	year = {2013},
	pages = {39-53},
	author = {Sheppard, L.J. and Leith, I.D. and van Dijk, N. and Leeson, S. and Mizunuma, T. and De Bakker, R. and Elustando, D.E.V. and Gomez, H.G.}
}
@article {1525,
	title = {Stomata are less responsive to environmental stimuli in high background ozone in Dactylis glomerata and Ranunculus acris.},
	journal = {Environmental Pollution},
	volume = {175},
	year = {2013},
	pages = {82-91},
	author = {Wagg, S. and Mills, G. and Hayes, F. and Wilkinson, S. and Davies, W.J.}
}
@article {1440,
	title = {Coastal eutrophication as a driver of salt marsh loss},
	journal = {Nature},
	volume = {490},
	year = {2012},
	pages = {388-392},
	author = {Deegan, L.A. and Johnson, D.S. and Warren, R.S. and Peterson, B.P. and Fleeger, J.W. and Fagherazzi, S. and Wollheim, W.M.}
}
@article {1618,
	title = {The immediate environmental effects of tephra emission},
	journal = {Bulletin of Volcanology},
	volume = {74},
	year = {2012},
	pages = {1905-1936},
	author = {Ayris, P.M. and Delmelle, P.}
}
@article {1325,
	title = {Impacts of atmospheric nitrogen deposition: responses of multiple plant and soil parameters across contrasting ecosystems in long-term field experiments},
	journal = {Global Change Biology},
	volume = {18},
	year = {2012},
	pages = {1197-1215},
	author = {Phoenix, G.K. and Emmett, B.A. and Britton, A.J. and Caporn, S.J.M. and Dise, N.B. and Helliwell, R. and Jones, M.L.M. and Leake, J.R. and Leith, I.D. and Sheppard, L.J. and Sowerby, A. and Pilkington, M.G. and Rowe, E.C. and Ashmore MR and Power, S.A.}
}
@article {1526,
	title = {Reduced soil water availability did not protect two competing grassland species from the negative effects of increasing background ozone.},
	journal = {Environmental Pollution},
	volume = {165},
	year = {2012},
	pages = {91-99},
	author = {Wagg, S. and Mills, G. and Hayes, F. and Wilkinson, S. and Cooper, D. and Davies, W.J.}
}
@article {1271,
	title = {RoTAP: Review of Transboundary Air Pollution: Acidification, Eutrophication, Ground Level Ozone and Heavy Metals in the UK},
	year = {2012},
	institution = {Centre for Ecology \& Hydrology},
	url = {http://www.rotap.ceh.ac.uk/documents},
	author = {Defra}
}
@article {1571,
	title = {Terricolous lichens as indicators of nitrogen deposition: Evidence from national records.},
	journal = {Ecological Indicators},
	volume = {20},
	year = {2012},
	pages = {196-203},
	author = {Stevens, C.J. and Smart, S.M. and Henrys, P.A. and Maskell, L.C. and Crowe, A. and Simkin, J. and Cheffings, C.M. and Whitfield, C. and Gowing, D.J.G. and Rowe, E.C. and Dore, A.J. and Emmett, B.A.}
}
@article {1279,
	title = {Dry deposition of ammonia gas drives species change faster than wet deposition of ammonium ions: evidence from a long-term field manipulation},
	journal = {Global Change Biology},
	volume = {17 (12)},
	year = {2011},
	pages = {3589-3607},
	author = {Sheppard, L.J. and Leith, I.D. and Mizunuma, T. and Cape, J.N and Crossley, A. and Leeson S. and Sutton, M.A. and Fowler, D. and van Dijk, N.}
}
@article {1675,
	title = {Ecosystem responses to reduced and oxidised nitrogen inputs in European terrestrial habitats},
	journal = { Environmental Pollution},
	volume = {159 },
	year = {2011},
	pages = {665-676},
	author = {Stevens, C.J. and Manning, P. and Van Den Berg, L.J.L. and De Graaf, M.C.C. and Wamelink, G.W.W. and Boxman, A.W. and Bleeker, A. and Vergeer, P. and Arroniz-Crespo, M. and Limpens, J. and Lamerse, L.P.M. and Bobbink, R. and Dorland, E.}
}
@inbook {1285,
	title = {Moninea Bog - Case study of atmospheric ammonia impacts on a Special Area of Conservation},
	booktitle = {In: Hicks, W.K.; Whitfield, C.P.; Bealey, W.J.; Sutton, M.A., (eds.) Nitrogen deposition and Natura 2000: Science and practice in determining environmental impacts},
	year = {2011},
	pages = {59-71},
	publisher = {COST Office - European Cooperation in Science and Technology,.},
	organization = {COST Office - European Cooperation in Science and Technology,.},
	author = {Sutton, M.A. and Leith, I.D. and Bealey, W. J and van Dijk, N. and Tang, Y.S.}
}
@article {1488,
	title = {New stomatal flux-based critical levels for ozone effects on vegetation.},
	journal = {Atmospheric Environment},
	volume = {45},
	year = {2011},
	pages = {5064-5068},
	author = {Mills, G. and Pleijel, H. and Braun, S. and Buker, P. and Bermejo, V. and Calvo, E. and Danielsson, H. and Emberson, L. and Gonzalez Fernandez, I. and Grunhage, L. and Harmens, H. and Hayes, F. and Karlsson, P.E. and Simpson, D.}
}
@article {1556,
	title = {Nitrogen concentrations in mosses indicate the spatial distribution of atmospheric nitrogen deposition in Europe.},
	journal = {Environmental Pollution},
	volume = {159},
	year = {2011},
	pages = {2852-2860},
	author = {Harmens, H. and Norris, D.A. and Cooper, D.M. and Mills, G. and Steinnes, E. and Kubin, E. and Thoni, L. and Aboal, J.R. and Alber, R. and Carballeira, A. and Coskun, M. and De Temmerman, L. and Frolova, M. and Frontasyeva, M. and Gonzales-Miqueo, L. and Jeran, Z. and Leblond, S. and Liiv, S. and Mankovska, B. and Pesch, R. and Poikolainen, J. and Ruhling, A. and Santamaria, J.M. and Simoneie, P. and Schroder, W. and Suchara, I. and Yurukova, L. and Zechmeister, H.G.}
}
@inbook {1676,
	title = {Nitrogen deposition as a threat to European Terrestrial Biodiversity},
	booktitle = {European Nitrogen Assessment},
	year = {2011},
	pages = {463-494},
	publisher = {Cambridge University Press},
	organization = {Cambridge University Press},
	chapter = {20},
	author = {Dise, N.B. and Ashmore, M.R. and Belyazid S and Bleeker, A. and Bobbink, R. and de Vries, W. and Erisman, J.W. and Spranger, T. and Stevens, C.J. and Van Den Berg, L.J.L.}
}
@article {1297,
	title = {Changes in species richness and composition in European acidic grasslands over the past 70 years: the contribution of cumulative atmospheric nitrogen deposition},
	journal = {Global Change Biology},
	volume = {16},
	year = {2010},
	pages = {344-357},
	author = {Dupre, C. and Stevens, C.J. and Ranke, T. and Bleeker, A. and Peppler-Lisbach, C. and Gowing, D.J.G. and Dise, N.B. and Dorland, E. and Bobbink, R. and Diekmann, M.}
}
@article {1575,
	title = {Chemical fluxes in time through forest ecosystems in the UK {\textendash} Soil response to pollution recovery.},
	journal = {Environmental Pollution},
	volume = {158},
	year = {2010},
	pages = {1857-1869},
	author = {Vanguelova, E.I. and Benham, S. and Pitman, R. and Moffat, A.J. and Broadmeadow, M. and Nisbet, T. and Durrant, D. and Barsoum, N. and Wilkinson, M. and Bochereau, F. and Hutchings, T. and Broadmeadow, S. and Crow, P. and Taylor, P. and Houston, T.D.}
}
@article {1566,
	title = {First Europe-wide correlation analysis identifying factors best explaining the total nitrogen concentration in mosses.},
	journal = {Atmospheric Environment},
	volume = {44},
	year = {2010},
	pages = {3485-3491},
	author = {Schroder, W. and Holy, M. and Pesch, R. and Harmens, H. and Fagerli, H. and Alber, R. and Coskun, M. and De Temmerman, L. and Frolova, M. and Gonzalez-Miqueo, L. and Jeran, Z. and Kubin, E. and Leblond, S. and Liiv, S. and Mankovska, B. and Piispanen, J. and Santamaria, J.M. and Simoneie, P. and Suchara, I. and Yurokova, L. and Thoni, L. and Zechmeister, H.G.}
}
@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.}
}
@article {1554,
	title = {Relationships between lichen community composition and concentrations of NO2 and NH3.},
	journal = {Environmental Pollution},
	volume = {158},
	year = {2010},
	pages = {2553-2560},
	author = {Gadson, S.R. and Dagley, J.R. and Wolseley, P.A. and Power, S.A.}
}
@article {1105,
	title = {Changes in species richness and composition in European acidic grasslands over the past 70 years: the contribution of cumulative atmospheric nitrogen deposition. },
	journal = {Global Change Biology},
	volume = {161},
	year = {2009},
	pages = {344-357},
	author = {Dupre, C. and Stevens, C.J. and Ranke, T. and Bleeker, A. and Peppler-Lisbach, C, and Gowing, D.J. and Dise, N.B. and Dorland, E. and Bobbink, R. and Diekmann, M.}
}
@article {1487,
	title = {Chronic exposure to increasing background ozone impairs stomatal functioning in grassland species.},
	journal = {Global Change Biology},
	volume = {15},
	year = {2009},
	pages = {1522-1533},
	author = {Mills, G. and Hayes, F. and Wilkinson, S. and Davies, W.J.}
}
@article {1550,
	title = {Digest of UK Energy Statistics},
	year = {2009},
	institution = {Department of Energy and Climate Change},
	address = {London},
	author = {.DECC}
}
@article {1300,
	title = {Identifying indicators of atmospheric nitrogen deposition impacts in acid grasslands},
	journal = {Biological Conservation},
	volume = {142},
	year = {2009},
	pages = {2069-2075},
	author = {Stevens, C.J. and Maskell, L.C. and Smart, S.M. and Caporn, S.J.M. and Dise, N.B. and Gowing, D.J.}
}
@article {1387,
	title = {Particulate matter at a rural location in southern England during 2006: Model sensitivities to precursor emissions},
	journal = {Atmospheric Environment},
	volume = { 43},
	year = {2009},
	pages = {689-696},
	author = {Derwent, R.G. and Witham, C. and Redington, A. and Jenkin, M.E. and Stedman, J.R. and Yardley, R. and Hayman, G.}
}
@article {1516,
	title = {Regional trends in soil acidification and metal mobilization related to acid deposition.},
	journal = {Environmental Pollution},
	volume = {157},
	year = {2009},
	pages = {313-319},
	author = {Stevens, C.J. and Dise, N.B. and Gowing, D.J.}
}
@article {1439,
	title = {Relative effects of elevated background ozone concentrations and peak episodes on senescence and above-ground growth in four populations of Anthoxanthum odoratum L.},
	journal = {Environmental Pollution},
	volume = {157},
	year = {2009},
	pages = {503-510},
	author = {Dawnay, L. and Mills, G.}
}
@article {1447,
	title = {Validation of the stomatal flux approach for the assessment of ozone visible injury in young forest trees.  Results from the TOP (transboundary ozone pollution) experiment at Curno, Italy.},
	journal = {Environmental Pollution},
	volume = {157},
	year = {2009},
	pages = {1497-1505},
	author = {Gerosa, G. and Marzuoli, R. and Desotgiu, R. and Bussotti, F. and Ballarin-Denti, A.}
}
@inbook {1282,
	title = {Sources, dispersion and fate of atmospheric ammonia},
	booktitle = {In: Hatfield, J.L.; Follett, R.F., (eds.) Nitrogen in the Environment - Sources, Problems, and Management. Academic Press, },
	year = {2008},
	pages = {333-393.},
	author = {Dragosits, U. and Dore, A.J. and Sheppard, L.J. and Vieno, M. and Tang, Y.S. and Theobald, M.R. and Sutton, M.A.}
}
@article {1280,
	title = {Stress responses of Calluna vulgaris to reduced and oxidised N applied under real world conditions},
	journal = {Environmental Pollution},
	volume = {154 (3)},
	year = {2008},
	pages = {404-413},
	author = {Sheppard, L.J. and Leith, I.D. and Crossley, A. and van Dijk, N. and Fowler, D. and Sutton, M.A. and Woods, C.}
}
@article {87,
	title = {Stress responses of Calluna vulgaris to reduced and oxidised N applied under {\textquoteright}real world conditions{\textquoteright}},
	journal = {Environmental Pollution},
	volume = {154},
	year = {2008},
	pages = {404-413},
	author = {Sheppard, L.J. and Leith, I.D. and Crossley, A. and van Dijk, N. and Fowler, D. and Sutton, M.A. and Woods, C.}
}
@article {317,
	title = {The Air Quality Strategy for England, Scotland, Wales and Northern Ireland (Volume 1)},
	year = {2007},
	publisher = {Department for Environment, Food \& Rural Affairs},
	url = {http://www.official-documents.gov.uk/document/cm71/7169/7169_i.pdf},
	author = {Defra}
}
@article {1483,
	title = {Can salt stress-induced physiological responses protect tomato crops from ozone damages in Mediterranean environments?},
	journal = {European Journal of Agronomy},
	volume = {26},
	year = {2007},
	pages = {454-461},
	author = {Maggio, A. and De Pascale, S. and Fagnano, M. and Barbieri, G.}
}
@article {1548,
	title = {Comparative cryptogam ecology: a review of bryophyte and lichen traits that drive biogeochemistry.},
	journal = {Annals of Botany},
	volume = {99},
	year = {2007},
	pages = {987-1001},
	author = {Cornelissen, J.H.C. and Lang, S.I. and Soudzilovskaia, N.A. and During, H.J.}
}
@article {1491,
	title = {Dissolved organic carbon trends resulting from changes in atmospheric deposition chemistry.},
	journal = {Nature},
	volume = {450},
	year = {2007},
	pages = {537-539},
	author = {Monteith, D.T. and Stoddard, J.L. and Evans, C.D. and De Wit, H.A. and Forsius, M. and Hogasen, T. and Wilander, A. and Skjelkvale, B.L. and Jeffries, D.S. and Vuorenmaa, J. and Keller, B. and Kop{\'a}cek, J. and Vesely, J.}
}
@article {1273,
	title = {Diversity and sensitivity of epiphytes to oxides of nitrogen in London},
	journal = {Environmental Pollution },
	volume = {146},
	year = {2007},
	pages = {299-310},
	abstract = {This study investigated the distribution and diversity of epiphytes in London in relation to NO(x) using fine-scale atmospheric dispersion modelling. The survey recorded over 3000 epiphytes from 334 trees (Fraxinus excelsior) representing 74 lichen, 14 moss, 7 fungal and 3 algal species. There was a significant inverse relationship between diversity and NO(x). Diversity declined where NO(x) exceeded 70 microg m(-3) and NO2 exceeded 40 microg m(-3), suggesting a phytotoxic effect. However, there was a significant positive relationship between NO(x) and lichen abundance due to the ubiquitous distribution of pollution tolerant species, mainly associated with eutrophication. A scale of lichen sensitivity to NO(x) has been derived.},
	author = {Davies, L. and Bates, J.W. and Bell, J.N.B. and James, P.W. and Purvis, O.W.}
}
@article {1551,
	title = {An introductory guide to valuing ecosystem services. },
	year = {2007},
	institution = {Defra},
	address = {London},
	url = {http://www.defra.gov.uk/wildlife-countryside/natres/eco-value.htm},
	author = {Defra}
}
@article {362,
	title = {Source attribution and critical loads assessment for Special Areas of Conservation and Special Protection Areas in the UK},
	year = {2007},
	issn = {SNIFFER AQ02},
	author = {Bealey, W. J and Dore, A.J.}
}
@article {1277,
	title = {Diagnostic indicators of elevated nitrogen deposition},
	journal = {Environmental Pollution},
	volume = {144},
	year = {2006},
	author = {Pitcairn, C.E.R. and Fowler D. and Leith, I.D. and Sheppard, L.J. and Tang, Y.S. and Sutton, M.A. and Famulari D.}
}
@article {1502,
	title = {Differential ozone sensitivity in an old and a modern Swedish wheat cultivar {\textendash} grain yield and quality, leaf chlorophyll and stomatal conductance.},
	journal = {Environmental and Experimental Botany},
	volume = {56},
	year = {2006},
	pages = {63-71},
	author = {Pleijel, H. and Eriksen, A.B. and Danielsson, H. and Bondesson, N. and Sellden, G.}
}
@article {1298,
	title = {Loss of forb diversity in relation to nitrogen deposition in the UK: regional trends and potential controls},
	journal = {Global Change Biology},
	volume = {12},
	year = {2006},
	pages = {1823-1833},
	author = {Stevens, C.J. and Dise, N.B. and Gowing, D.J. and Mountford, J.O.}
}
@article {1441,
	title = {A model of annual orographic precipitation and acid deposition and its application to Snowdonia.},
	journal = {Atmospheric Environment},
	volume = {40},
	year = {2006},
	pages = {3316-3326},
	author = {Dore, A.J. and Mousavi-Baygi, M. and Smith, R.I. and Hall, J. and Fowler, D. and Choularton, T.W.}
}
@article {1327,
	title = {Abundance and flowering succes patterns in a short-term grazed grassland: early evidence of facilitation},
	journal = {Journal of Ecology },
	volume = {93 },
	year = {2005},
	pages = {1104-1114},
	author = {Bossuyt, B. and De Fr{\'e}, B. and Hoffmann, M.}
}
@article {1577,
	title = {Acidic mist reduces foliar membrane-associated calcium and impairs stomatal responsiveness in red spruce,},
	journal = {Tree Physiology},
	volume = {25},
	year = {2005},
	pages = {673-680},
	author = {Borer, C.H. and Schaberg, P.G. and DeHayes, D.H.}
}
@article {1610,
	title = {Biomonitoring methods for assessing the impacts of nitrogen pollution: refinement and testing},
	year = {2005},
	institution = {JNCC},
	issn = {386},
	author = {Leith, I. and van Dijk, N. and Pitcairn, C.E.R. and Wolseley, P.A. and Whitfield, C.P. and Sutton, M.A.}
}
@article {1481,
	title = {Decline of acid-sensitive plant species in heathland can be attributed to ammonium toxicity in combination with low pH.},
	journal = {New Phytologist},
	volume = {166},
	year = {2005},
	pages = {551-564},
	author = {Van Den Berg, L.J. and Dorland, E. and Vergeer, P. and Hart, M.A.C. and Bobbink, R. and Roelofs, J.G.}
}
@article {1524,
	title = {Impact of rising tropospheric ozone on potato: effects on photosynthesis, growth, productivity and yield quality.},
	journal = {Plant Cell and Environment},
	volume = {28},
	year = {2005},
	pages = {982-996},
	author = {Vandermeiren, K. and Black, C. and Pleijel, H. and De Temmerman, L.}
}
@article {1446,
	title = {Long-term suppression of wetland methane flux following a pulse of simulated acid rain.},
	journal = {Geophysical Research Letters},
	volume = {32},
	year = {2005},
	author = {Gauci, V. and Dise, N. and Blake, S.}
}
@article {1121,
	title = {A study of the epiphytic communities of Atlantic oak woods along an atmospheric nitrogen deposition gradient},
	journal = {Journal of Ecology },
	volume = {93},
	year = {2005},
	pages = {482-492},
	author = {Mitchell, R. and Truscot, A. and Leith, I. and Cape, J. and van Dijk, N. and Tang, Y. and Fowler, D. and Sutton, M.A.}
}
@article {1281,
	title = {An Automated Wet Deposition System to Compare the Effects of Reduced and Oxidised N on Ombrotrophic Bog Species: Practical Considerations},
	journal = {Water, Air and Soil Pollution: Focus},
	volume = {4 (6)},
	year = {2004},
	pages = {197-205},
	author = {Sheppard, L.J. and Crossley, A. and Leith, I.D. and Hargreaves, K.J. and Carfrae, J. and van Dijk, N. and Cape, J.N and Sleep, D. and Fowler, D. and Raven, J.A.}
}
@article {253,
	title = {Bioindicator and biomonitoring methods for assessing the effects of atmospheric nitrogen on statutory nature conservation sites},
	year = {2004},
	address = {Peterborough},
	author = {Sutton, M.A. and Pitcairn, C.E.R. and Leith, I.D. and van Dijk, N. and Tang, Y.S. and Skiba, U. and Smart, S. and Mitchell, R. and Wolseley, P. and James, P. and Purvis, W. and Fowler, D.},
	editor = {Sutton, M.A. and Pitcairn, C.E.R. and Whitfield, C.P.}
}
@article {1119,
	title = {Differential effects of nitrate and ammonium on three fen bryophyte species in relation to pollutant nitrogen input.},
	journal = {New Phytologist},
	volume = {164},
	year = {2004},
	pages = {451-458},
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	journal = {Functional Ecology},
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	author = {Mitchell, R.J. and Truscott, A.M. and Leith, I.D. and Cape, J.N. and van Dijk, N. and Tang, Y.S. and Fowler, D. and Sutton, M.A.}
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	journal = {Science},
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	journal = {Environmental Pollution},
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	keywords = {excretion, inventory, metabolic rates, model, nitrogen, nitrogen deposition, united-kingdom, volatilisation},
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}
@book {1579,
	title = {Impact of atmospheric nitrogen deposition on epiphytes in Atlantic oakwoods.},
	year = {2003},
	author = {Mitchell, R.J. and Truscott, A.M. and Leith, I.D. and Tang, Y.S. and van Dijk, N. and Smith, R.I. and Sutton, M.A.}
}
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	journal = {Lichenologist},
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	pages = {347-359},
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}
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	title = {Native plant species suitable as bioindicators and biomonitors for airborne fluoride},
	journal = {Environmental Pollution},
	volume = {125},
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	pages = {3-11},
	keywords = {air-pollution, bioindicator, biological indicators, biomonitoring, bryophytes, emission, epiphytic lichens, fluoride, hf, long-harbour, newfoundland, phosphorus plant, vegetation, vicinity, visible injury},
	author = {Weinstein, L. H. and Davison, A. W.}
}
@article {1321,
	title = {Growth, nitrogen uptake, and resource allocation in the two tripartite lichens Nephroma arcticum and Peltigera aphthosa during nitrogen stress},
	journal = {New Phytologist},
	volume = {153},
	year = {2002},
	pages = {307-315},
	author = {Dahlmann, L. and N{\"a}sholm, T. and Palmqvist, K.}
}
@article {2023,
	title = {Heavy metal (Pb, Zn, Cd, Fe and Cu) contents of plant foliage near the Anvil Range lead/zinc mine, Faro, Yukon Territory},
	journal = {Ecotoxicology and Environmental Safety},
	year = {2002},
	pages = {273-279},
	author = {Pugh, R. E and Dick, D. G and Fredeen, A. L}
}
@article {61,
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}
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}
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}
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	journal = {Nature},
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}
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	title = {Accounting for nature: assessing habitats in the UK countryside.},
	year = {2000},
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@book {597,
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	series = {Accounting for nature: assessing habitats in the UK countryside},
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	publisher = {DETR},
	organization = {DETR},
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	author = {Haines-Young, R.H. and Barr, C.J. and Black, H.I.G. and Briggs, D.J. and Bunce, R.G.H. and Clarke, R.T. and Cooper, A. and Dawson, F.H. and Firbanks, L.G. and Fuller, R.M. and Furse, M.T. and Gillespie, M.K. and Hill, R. and Hornung, M. and Howard, D.C. and McCann, T. and Morecroft, M.D. and Petit, S. and Sier, A.R.J. and Smart, S.M. and Stott, A.P. and Watkins, J.W.}
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}
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	year = {2000},
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	volume = {105},
	year = {1998},
	pages = {539-571},
	author = {Erisman, J.W. and Draaijers, G.P.J. and Steingr{\"o}ver, E. and Van Dijk, H. and de Vries, W. and Boxman, A.}
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@inbook {657,
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	year = {1998},
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	author = {Sutton, M.A. and Milford, C. and Dragosits, U. and Place, C.J. and Singles, R.J. and Smith, R.I. and Pitcairn, C.E.R. and Fowler, D. and Hill, J. and ApSimon, H.M. and Ross, C. and Hill, R. and Jarvis, S.C. and Pain, B.F. and Phillips, V.C. and Harrison, R. and Moss, D. and Webb, J. and Espenhahn, S.E. and Lee, D.S. and Hornung, M. and Ullyett, J. and Bull, K.R. and Emmett, B.A. and Lowe, J. and Wyers, G.P.}
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