Biblio

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2002

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.

2003

Pitcairn C.E.R., Fowler D., Leith I.D., Sheppard L.J., Sutton M.A., Kennedy V., Okello E.. 2003. Bioindicators of enhanced nitrogen deposition. Environmental Pollution. 126(3):353-361.

Sutton M.A., Pitcairn C.E.R., Whitfield C., Leith I.D., Sheppard L.J., van Dijk N., Tang S., Skiba U., Smart S., Mitchell R. et al.. 2003. Biomonitor methods for assessing effects of atmospheric nitrogen on statuary nature conservation sites..

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.

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..

2004

Gidman E., Goodacre R., Emmett B., Sheppard L.J., Leith I.D., Gwynn-Jones D.. 2004. Applying Metabolic fingerprinting to Ecology: The use of fourier-transform infrared spectroscopy for the rapid screeing of plant repsonses to N deposition.. Water, Air and Soil Pollution: Focus. 4:251-258.

Sheppard L.J., Crossley A., Leith I.D., Hargreaves K.J., Carfrae J.A., van Dijk N., Cape J.N., Sleep D., Fowler D., Raven J.. 2004. An automated wet deposition system to compare the effects of reduced and oxidised N on ombrotrophic bogs.. Water, Air and Soil Pollution: Focus. 4:197-205.

Skinner R., Ineson P., Hicks W.K., Jones H.E., Sleep D., Leith I.D., Sheppard L.J.. 2004. Correlating the spatial distribution of atmospheric ammonia with delta N-15 values at an ammonia release site. Water, Air and Soil Pollution: Focus. 4:219-228.

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.

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.

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.

2006

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.

2007

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.

2008

Sheppard L.J., Leith I.D., Field C., van Dijk N., Rung M., Skiba U.. 2008. 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.. :628-631.

Kivimaki S.K., Bruneau P., Grace J., Leith I.D., Rees B., Sheppard L.J.. 2008. Carbon and nitrogen cycling in Sphagnum capillifolium in response to nitrogen deposition and form . :592-594.

Cape J.N., Jones M., Leith I.D., Sheppard L.J., van Dijk N., Sutton M.A., Fowler D.. 2008. Concentration-dependent deposition velocities for ammonia – from lab to field. Geophysical Research Abstracts. 10

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.

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.

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.

2009

Sheppard L.J., Leith I.D., Mizunuma T., van Dijk N., Cape J.N., Sutton M.A.. 2009. 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.. Workshop at the Bedford Hotel and Conference Centre, Brussel.

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.

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.

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.

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., Sutton M.A.. 2009. Standardised Grasses as Biomonitors of Ammonia Pollution Around Agricultural Point Sources. Atmospheric Ammonia. :269-279.

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