%0 Journal Article %J Atmospheric Environment %D 2017 %T Directional passive ambient air monitoring of ammonia for fugitive source attribution; a field trial with wind tunnel characteristics. %A Solera García, M.A. %A Timmis, R.J. %A van Dijk, N. %A Whyatt, J.D. %A Leith, I.D. %A Leeson, S.R. %A Braban, C.F. %A Sheppard, L.J. %A Sutton, M.A. %A Tang, Y.S. %B Atmospheric Environment %V 167 %P 576-585 %G eng %R https://doi.org/10.1016/j.atmosenv.2017.07.043 %0 Book Section %B Nitrogen Deposition, Critical Loads and Biodiversity %D 2014 %T The form of reactive nitrogen deposition is important for the provision of ecosystem services %A Sheppard, L.J. %A Leith, I.D. %A Kivimaki, S.K. %A Gaiawyn, J. %B Nitrogen Deposition, Critical Loads and Biodiversity %I Springer %G eng %0 Journal Article %J Global Change Biology %D 2014 %T Inertia in an ombrotrophic bog ecosystem in response to 9 years' realistic perturbation by wet deposition of nitrogen, separated by form %A Sheppard, L.J. %A Leith, I.D. %A Mizunuma, T. %A Leeson, S. %A Kivimaki, S. %A Cape, J. N. %A van Dijk, N. %A Leaver, D. %A Sutton, M.A. %A Fowler, D. %A Van den Berg, L.J.L. %A Crossley, A. %A Field, C. %A Smart, S. %K Whim %B Global Change Biology %V 20 %P 566-580 %G eng %N 2 %0 Journal Article %J Soil Biology & Biochemistry %D 2013 %T Ammonia exposure promotes algal biomass in an ombrotrophic peatland %A Payne, R.J. %A Jassey, V.E.J. %A Leith, I.D. %A Sheppard, L.J. %A Dise, N.B. %A Gilbert, D. %K Whim %B Soil Biology & Biochemistry %V 57 %P 936-938 %G eng %0 Journal Article %J Biogeochemistry %D 2013 %T PK additions modify the effects of N dose and form on species composition, species litter chemistry and peat chemistry in a Scottish peatland %A Sheppard, L.J. %A Leith, I.D. %A Leeson, S. %A Mizunuma, T. %A de Bakker, R. %A Elustondo, D. %A Garcia-Gomez, H. %K Whim %B Biogeochemistry %V 116 %P 39-53 %G eng %N 1-3 %0 Journal Article %J Global Change Biology %D 2012 %T Impacts of atmospheric nitrogen deposition: responses of multiple plant and soil parameters across contrasting ecosystems in long-term field experiments %A Phoenix, G.K. %A Emmett, B.A. %A Britton, A.J. %A Caporn, S.J.M. %A Dise, N.B. %A Helliwell, R. %A Jones, L. %A Leake, J.R. %A Leith, I.D. %A Sheppard, L.J. %A Sowerby, A. %A Pilkington, M.G. %A Rowe, E.C. %A Ashmorek, M.R. %A Power, S.A. %K Whim %B Global Change Biology %V 18 %P 1197-1215 %G eng %N 4 %0 Journal Article %J Folia Geobotanica %D 2012 %T Response of Sphagnum papillosum and Drosera rotundifolia to Reduced and Oxidized Wet Nitrogen Deposition %A Millett, J. %A Leith, I.D. %A Sheppard, L.J. %A Newton, J. %K Whim %B Folia Geobotanica %V 47 %G eng %N 2 %& 179-191 %0 Report %D 2011 %T All forms of reactive nitrogen deposition to Natura 2000 sites should not be treated equally: effects of wet versus dry and reduced versus oxidised nitrogen deposition %A Sheppard, L.J. %A Leith, I.D. %A Mizunuma, T. %A van Dijk, N. %A Cape, J.N. %A Sutton, M.A. %B Nitrogen deposition and Natura 2000: Science and practice in determining environmental impacts %I COST Office - European Cooperation in Science and Technology, %P 181-190 %G eng %0 Report %D 2011 %T Evaluation of nitrogen indicators on ombrotrophic acid bogs: observations from a nitrogen manipulation study %A Mizunuma, T. %A Leith, I.D. %A Gray, A. %A Sutton, M.A. %A Sheppard, L.J. %B Nitrogen deposition and Natura 2000: Science and practice in determining environmental impacts %I COST Office European Cooperation in Science and Technology %P 190-200 %G eng %0 Journal Article %J Soil Biology & Biochemistry %D 2011 %T Five years of simulated atmospheric nitrogen deposition have only subtle effects on the fate of newly synthesized carbon in Calluna vulgaris and Eriophorum vaginatum. %A Currey, P.M. %A Johnson, D. %A Dawson, L.A. %A van der Wal, R. %A Thornton, B. %A Sheppard, L.J. %A Leith, I.D. %A Artz, R.R.E. %B Soil Biology & Biochemistry %V 43 %P 495-502 %G eng %N 3 %0 Book Section %B Book of Abstracts: Joint Society of Wetland Scientists %D 2011 %T Nitrogen form makes a difference to the responses of a peatland to enhanced reactive nitrogen deposition [abstract] %A Sheppard, L.J. %A Leith, I.D. %A Leeson, S. %A van Dijk, N. %A Cape, J.N. %A Fowler, D. %A Field, C. %B Book of Abstracts: Joint Society of Wetland Scientists %I WETPOL and Wetland Biogeochemistry Symposium %C Guarant %P 289 %G eng %0 Journal Article %J Global Change Biology %D 2010 %T Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland. %A Currey, P.M. %A Johnson, D. %A Sheppard, L.J. %A Leith, I.D. %A Toberman, H. %A van der Wal, R. %A Dawson, L.A. %A Artz, R.R.E. %B Global Change Biology %V 16 %P 2307-2321 %G eng %0 Conference Paper %B Workshop at the Bedford Hotel and Conference Centre, Brussel %D 2009 %T All forms of reactive nitrogen deposition to Natura 2000 sites should not be treated equally: effects of wet versus dry and reduced versus oxidised nitrogen deposition. %A Sheppard, L.J. %A Leith, I.D. %A Mizunuma, T. %A van Dijk, N. %A Cape, J.N. %A Sutton, M.A. %B Workshop at the Bedford Hotel and Conference Centre, Brussel %I Nitrogen Deposition and Natura 2000: Science & practice in determining environmental impacts %C Brussels %G eng %0 Conference Paper %B Workshop at the Bedford Hotel and Conference Centre, Brussels %D 2009 %T Evaluation of N indicators on ombrotrophic acid bogs: Observations from an N manipulation study %A Mizunuma, T. %A Leith, I.D. %A Gray, A. %A Sheppard, L.J. %B Workshop at the Bedford Hotel and Conference Centre, Brussels %I Nitrogen Deposition and Natura 2000: Science & practice in determining environmental impacts %C Brussels %G eng %0 Book Section %B Atmospheric Ammonia %D 2009 %T Long-Term Cumulative Exposure Exacerbates the Effects of Atmospheric Ammonia on an Ombrotrophic Bog: Implications for Critical Levels %A Sheppard, L.J. %A Leith, I.D. %A Crossley, A. %A van Dijk, N. %A Cape, J.N. %A Fowler, D. %A Sutton, M.A. %E Sutton, M.A. %E Reis,S. %E Baker, S.M.H. %K Whim %B Atmospheric Ammonia %P 49-58 %G eng %0 Book Section %B Atmospheric Ammonia %D 2009 %T Reassessment of Critical Levels for Atmospheric Ammonia %A Cape, J.N. %A van der Eerden, L.J. %A Sheppard, L.J. %A Leith, I.D. %A Sutton, M.A. %E Sutton, M.A. %E Reis, S. %E Baker, S.M.H. %K Whim %B Atmospheric Ammonia %P 15-40 %G eng %0 Journal Article %J Soil Organisms %D 2009 %T Response of enchytraeid worm populations to different forms of nitrogen (ammonia, ammonium, and nitrate) deposition. %A Prendergast, M. %A Standen, V. %A Leith, I.D. %A Sheppard, L.J. %B Soil Organisms %V 81 %P 225-236 %G eng %N 2 %0 Book Section %B Atmospheric Ammonia %D 2009 %T Standardised Grasses as Biomonitors of Ammonia Pollution Around Agricultural Point Sources %A Leith, I.D. %A van Dijk, N. %A Pitcairn, C.E.R. %A Sheppard, L.J. %A Sutton, M.A. %E Sutton, M.A. %E Reis,S. %E Baker, S.M.H. %K Whim %B Atmospheric Ammonia %P 269-279 %G eng %0 Conference Proceedings %D 2008 %T 2008 Effects of different nitrogen forms, ammonia gas and wet deposited ammonium and nitrate, on methane and nitrous oxide emissions from an ombrotrophic bog, whim moss, in the Scottish Borders. %A Sheppard, L.J. %A Leith, I.D. %A Field, C. %A van Dijk, N. %A Rung, M. %A Skiba, U. %I After Wise Use – The Future of Peatlands, Proceedings of the 13th International Peat Congress %C Tullamore %P 628-631 %@ 0951489046 %G eng %0 Conference Proceedings %D 2008 %T Carbon and nitrogen cycling in Sphagnum capillifolium in response to nitrogen deposition and form %A Kivimaki, S.K. %A Bruneau, P. %A Grace, J. %A Leith, I.D. %A Rees, B. %A Sheppard, L.J. %I After Wise Use – The Future of Peatlands, Proceedings of the 13th International Peat Congress %C Tullamore %P 592-594 %@ 0951489046 %G eng %0 Journal Article %J Geophysical Research Abstracts %D 2008 %T Concentration-dependent deposition velocities for ammonia – from lab to field %A Cape, J.N. %A Jones, M. %A Leith, I.D. %A Sheppard, L.J. %A van Dijk, N. %A Sutton, M.A. %A Fowler, D. %B Geophysical Research Abstracts %V 10 %G eng %0 Conference Proceedings %B Land management in a changing environment %D 2008 %T Does enhanced nitrogen deposition represent a threat to Sphagnum and thus the sustainability of Scottish peatlands? %A Sheppard, L.J. %A Leith, I.D. %A Kivimaki, S.K. %A van Dijk, N. %A Hall, J. %A Bruneau, P. %A Grace, J. %A Rees, R.M. %B Land management in a changing environment %I Proceedings of the SAC and SEPA Biennial Conference %C Edinburgh %P 291-297 %G eng %0 Journal Article %J Atmospheric Environment %D 2008 %T Estimate of annual NH3 dry deposition to a fumigated ombrotrophic bog using concentration-dependent deposition velocities. %A Cape, J.N. %A Jones, M.R. %A Leith, I.D. %A Sheppard, L.J. %A van Dijk, N. %A Sutton, M.A. %A Fowler, D. %B Atmospheric Environment %V 42 %P 6637-6646 %G eng %N 27 %0 Journal Article %J Plant Ecology %D 2008 %T Long-term nitrogen deposition increases phosphorus limitation of bryophytes in an ombrotrophic bog %A Phuyal, M. %A Artz, R.R.E. %A Sheppard, L. %A Leith, I.D. %A Johnson, D. %B Plant Ecology %V 196 %P 111-121 %G eng %0 Journal Article %J Applied Geochemistry %D 2007 %T Potassium and phosphorus additions modify the response of Sphagnum capillifolium growing on a Scottish ombrotrophic bog to enhanced nitrogen deposition. %A Carfrae, J.A. %A Sheppard, L.J. %A Raven, J.A. %A Leith, I.D. %A Crossley, A. %B Applied Geochemistry %V 22 %P 1111-1121 %G eng %N 6 %0 Report %D 2006 %T Terrestrial Umberella Annual Report %A Emmett, B.A. %A Williams, B.L. %A Ashmore, M. %A Britton, A. %A Broadmeadow, M. %A Bullock, J. %A Cape, J.N. %A Caporn, S.J.M. %A Carroll, J.A. %A Cresser, M.S. %A Crossley, A. %A de Lange, I. %A Edmondson, J. %A Evans, C.D. %A Fowler, D. %A Grant, H. %A Green, E.R. %A Green, S. %A Griffiths, B. %A Hall, J. %A Helliwell, R. %A Hinton, C. %A Hughes, S. %A Jones, A.G. %A Jones, M. %A Leake, J.R. %A Leith, I.D. %A Maskell, L. %A McNamara, N. %A Moy, I. %A Oakley, S. %A Ostle, N. %A Power, S.A. %A Prendergast, M. %A Price, E.A.C. %A Reynolds, B. %A Rowe, E. %A Roy, D. %A Scott, A. %A Sheppard, L.J. %A Smart, S. %A Sowerby, A. %A Sutton, M.A. %A Thacker, S.A. %A Tipping, E. %A van Dijk, N. %A Vanguelova, E. %A van Zetten, E. %A Williams, D. %A Wilson, D. %A Wright, S. %I Centre for Ecology and Hydrology %G eng %0 Journal Article %J Water, Air and Soil Pollution: Focus %D 2004 %T Applying Metabolic fingerprinting to Ecology: The use of fourier-transform infrared spectroscopy for the rapid screeing of plant repsonses to N deposition. %A Gidman, E. %A Goodacre, R. %A Emmett, B. %A Sheppard, L.J. %A Leith, I.D. %A Gwynn-Jones, D. %B Water, Air and Soil Pollution: Focus %V 4 %P 251-258 %G eng %0 Journal Article %J Water, Air and Soil Pollution: Focus %D 2004 %T An automated wet deposition system to compare the effects of reduced and oxidised N on ombrotrophic bogs. %A Sheppard, L.J. %A Crossley, A. %A Leith, I.D. %A Hargreaves, K.J. %A Carfrae, J.A. %A van Dijk, N. %A Cape, J.N. %A Sleep, D. %A Fowler, D. %A Raven, J. %B Water, Air and Soil Pollution: Focus %V 4 %P 197-205 %G eng %0 Journal Article %J Water, Air and Soil Pollution: Focus %D 2004 %T Correlating the spatial distribution of atmospheric ammonia with delta N-15 values at an ammonia release site %A Skinner, R. %A Ineson, P. %A Hicks, W.K. %A Jones, H.E. %A Sleep, D. %A Leith, I.D. %A Sheppard, L.J. %B Water, Air and Soil Pollution: Focus %V 4 %P 219-228 %G eng %0 Journal Article %J Water Air and Soil Pollution %D 2004 %T Early effects of atmospheric ammonia (NH3) deposition on Calluna vulgaris (L.) growing on an ombrotrophic peat bog. %A Carfrae, J.A. %A Sheppard, L.J. %A Raven, J.A. %A Stein, W. %A Leith, I.D. %A Theobald, M. %A Crossley, A. %B Water Air and Soil Pollution %V 4 %P 229-239 %G eng %0 Book Section %B Nitrogen in the Envrionment %D 2004 %T Effects of enhanced N deposition on Cladonia portentosa; results from a field manipulation study. %A Sheppard, L.J. %A Leith, I.D. %A Crossley, A. %B Nitrogen in the Envrionment %I British Lichen Society Workshop %C Nettlecombe, Somerset %G eng %0 Journal Article %J Water, Air and Soil Pollution: Focus %D 2004 %T Quantifying dry NH3 deposition from an automated NH3 release system to ombrotrophic bog vegetation %A Leith, I.D. %A Sheppard, L.J. %A Fowler, D. %A Cape, N. %A Jones, M. %A Crossley, A. %A Hargreaves, K.J. %A Sim Tang, Y. %A Theobald, M. %A Sutton, M.A. %B Water, Air and Soil Pollution: Focus %V 4 %P 207-218 %G eng %0 Journal Article %J Environmental Pollution %D 2003 %T Bioindicators of enhanced nitrogen deposition %A Pitcairn, C.E.R. %A Fowler, D. %A Leith, I.D. %A Sheppard, L.J. %A Sutton, M.A. %A Kennedy, V. %A Okello, E. %B Environmental Pollution %V 126 %P 353-361 %G eng %N 3 %0 Report %D 2003 %T Biomonitor methods for assessing effects of atmospheric nitrogen on statuary nature conservation sites. %A Sutton, M.A. %A Pitcairn, C.E.R. %A Whitfield, C. %A Leith, I.D. %A Sheppard, L.J. %A van Dijk, N. %A Tang, S. %A Skiba, U. %A Smart, S. %A Mitchell, R. %A Wolseley, P. %A James, P. %A Purvis, W. %A Fowler, D. %I JNCC contract report %C Peterborough %G eng %0 Report %D 2003 %T The processes controlling uptake and storage of N and the effects of N deposition on semi-natural vegetation. %A Leith, I.D. %A Sheppard, L.J. %A Pitcairn, C.E.R. %A Ingleby, K. %A Jones, M. %A Tang, Y.S. %A Skinner, R. %A Carfrae, J.A. %A Cape, J.N. %A Fowler, D. %A Parrington, J. %B Nitrogen Umbrella Project %I Defra %G eng %0 Report %D 2003 %T Refinement and testing of bio-monitoring methods and development of protocols, for assessing impacts of atmospheric nitrogen deposition or concentrations on statuary nature conservation sites. %A Leith, I.D. %A van Dijk, N. %A Pitcairn, C.E.R. %A Sheppard, L.J. %A Wolsey, P. %A Sutton, M.A. %I JNCC %C Peterborough %G eng %0 Journal Article %J Phyton %D 2002 %T Effects of NH3 Fumigation on the Frost Hardiness of Calluna- Does N Deposition Increase Winter Damage by Frost? %A Sheppard, L.J. %A Leith, I.D. %B Phyton %V 42 %P 183-190 %G eng