Biblio

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T
Currey P.M., Johnson D., Sheppard L.J., Leith I.D., Toberman H., van der Wal R., Dawson L.A., Artz R.R.E..  2010.  Turnover of labile and recalcitrant soil carbon differ in response to nitrate and ammonium deposition in an ombrotrophic peatland.. Global Change Biology. 16:2307-2321.
Emmett B.A., Williams B.L., Ashmore M., Britton A., Broadmeadow M., Bullock J., Cape J.N., Caporn S.J.M., Carroll J.A., Cresser M.S. et al..  2006.  Terrestrial Umberella Annual Report.
S
Leith I.D., van Dijk N., Pitcairn C.E.R., Sheppard L.J., Sutton M.A..  2009.  Standardised Grasses as Biomonitors of Ammonia Pollution Around Agricultural Point Sources. Atmospheric Ammonia. :269-279.
R
Millett J., Leith I.D., Sheppard L.J., Newton J..  2012.  Response of Sphagnum papillosum and Drosera rotundifolia to Reduced and Oxidized Wet Nitrogen Deposition. Folia Geobotanica. 47(2)
Prendergast M., Standen V., Leith I.D., Sheppard L.J..  2009.  Response of enchytraeid worm populations to different forms of nitrogen (ammonia, ammonium, and nitrate) deposition.. Soil Organisms. 81(2):225-236.
Leith I.D., van Dijk N., Pitcairn C.E.R., Sheppard L.J., Wolsey P., Sutton M.A..  2003.  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..
Cape J.N., van der Eerden L.J., Sheppard L.J., Leith I.D., Sutton M.A..  2009.  Reassessment of Critical Levels for Atmospheric Ammonia. Atmospheric Ammonia. :15-40.
Q
Leith I.D., Sheppard L.J., Fowler D., Cape N., Jones M., Crossley A., Hargreaves K.J., Y. Tang S, Theobald M., Sutton M.A..  2004.  Quantifying dry NH3 deposition from an automated NH3 release system to ombrotrophic bog vegetation. Water, Air and Soil Pollution: Focus. 4:207-218.
P
Leith I.D., Sheppard L.J., Pitcairn C.E.R., Ingleby K., Jones M., Tang Y.S., Skinner R., Carfrae J.A., Cape J.N., Fowler D. et al..  2003.  The processes controlling uptake and storage of N and the effects of N deposition on semi-natural vegetation.. Nitrogen Umbrella Project.
Carfrae J.A., Sheppard L.J., Raven J.A., Leith I.D., Crossley A..  2007.  Potassium and phosphorus additions modify the response of Sphagnum capillifolium growing on a Scottish ombrotrophic bog to enhanced nitrogen deposition.. Applied Geochemistry. 22(6):1111-1121.
Sheppard L.J., Leith I.D., Leeson S., Mizunuma T., de Bakker R., Elustondo D., Garcia-Gomez H..  2013.  PK additions modify the effects of N dose and form on species composition, species litter chemistry and peat chemistry in a Scottish peatland. Biogeochemistry. 116(1-3):39-53.
N
Sheppard L.J., Leith I.D., Leeson S., van Dijk N., Cape J.N., Fowler D., Field C..  2011.  Nitrogen form makes a difference to the responses of a peatland to enhanced reactive nitrogen deposition [abstract]. Book of Abstracts: Joint Society of Wetland Scientists. :289.
L
Phuyal M., Artz R.R.E., Sheppard L., Leith I.D., Johnson D..  2008.  Long-term nitrogen deposition increases phosphorus limitation of bryophytes in an ombrotrophic bog. Plant Ecology. 196:111-121.
Sheppard L.J., Leith I.D., Crossley A., van Dijk N., Cape J.N., Fowler D., Sutton M.A..  2009.  Long-Term Cumulative Exposure Exacerbates the Effects of Atmospheric Ammonia on an Ombrotrophic Bog: Implications for Critical Levels. Atmospheric Ammonia. :49-58.
I
Sheppard L.J., Leith I.D., Mizunuma T., Leeson S., Kivimaki S., Cape J.N, van Dijk N., Leaver D., Sutton M.A., Fowler D. et al..  2014.  Inertia in an ombrotrophic bog ecosystem in response to 9 years' realistic perturbation by wet deposition of nitrogen, separated by form. Global Change Biology. 20(2):566-580.
Phoenix G.K., Emmett B.A., Britton A.J., Caporn S.J.M., Dise N.B., Helliwell R., Jones L., Leake J.R., Leith I.D., Sheppard L.J. et al..  2012.  Impacts of atmospheric nitrogen deposition: responses of multiple plant and soil parameters across contrasting ecosystems in long-term field experiments. Global Change Biology. 18(4):1197-1215.
F
Sheppard L.J., Leith I.D., Kivimaki S.K., Gaiawyn J..  2014.  The form of reactive nitrogen deposition is important for the provision of ecosystem services. Nitrogen Deposition, Critical Loads and Biodiversity.
Currey P.M., Johnson D., Dawson L.A., van der Wal R., Thornton B., Sheppard L.J., Leith I.D., Artz R.R.E..  2011.  Five years of simulated atmospheric nitrogen deposition have only subtle effects on the fate of newly synthesized carbon in Calluna vulgaris and Eriophorum vaginatum.. Soil Biology & Biochemistry. 43(3):495-502.
E
Mizunuma T., Leith I.D., Gray A., Sutton M.A., Sheppard L.J..  2011.  Evaluation of nitrogen indicators on ombrotrophic acid bogs: observations from a nitrogen manipulation study. Nitrogen deposition and Natura 2000: Science and practice in determining environmental impacts. :190-200.
Mizunuma T., Leith I.D., Gray A., Sheppard L.J..  2009.  Evaluation of N indicators on ombrotrophic acid bogs: Observations from an N manipulation study. Workshop at the Bedford Hotel and Conference Centre, Brussels.
Cape J.N., Jones M.R., Leith I.D., Sheppard L.J., van Dijk N., Sutton M.A., Fowler D..  2008.  Estimate of annual NH3 dry deposition to a fumigated ombrotrophic bog using concentration-dependent deposition velocities.. Atmospheric Environment. 42(27):6637-6646.
Sheppard L.J., Leith I.D..  2002.  Effects of NH3 Fumigation on the Frost Hardiness of Calluna- Does N Deposition Increase Winter Damage by Frost? Phyton. 42:183-190.
Sheppard L.J., Leith I.D., Crossley A..  2004.  Effects of enhanced N deposition on Cladonia portentosa; results from a field manipulation study.. Nitrogen in the Envrionment.
Carfrae J.A., Sheppard L.J., Raven J.A., Stein W., Leith I.D., Theobald M., Crossley A..  2004.  Early effects of atmospheric ammonia (NH3) deposition on Calluna vulgaris (L.) growing on an ombrotrophic peat bog.. Water Air and Soil Pollution. 4:229-239.
D
Sheppard L.J., Leith I.D., Kivimaki S.K., van Dijk N., Hall J., Bruneau P., Grace J., Rees R.M..  2008.  Does enhanced nitrogen deposition represent a threat to Sphagnum and thus the sustainability of Scottish peatlands? Land management in a changing environment. :291-297.

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