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Book Chapter
Sheppard L.J., Wallander H..  2005.  Atmospheric Nitrogen – Pollutant or fertiliser? Nitrogen Acquisition and assimilation in Higher Plants . :65-98.
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.
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.
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.
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.
Sutton M.A., Sheppard L.J., Fowler D..  2009.  Potential for the Further Development and Application of Critical Levels to Assess the Environmental Impacts of Ammonia. Atmospheric Ammonia. :41-48.
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.
Dragosits U., Dore A.J, Sheppard L.J., Vieno M., Tang Y.S., Theobald M., Sutton M..  2008.  Sources, dispersion and fate of atmospheric ammonia. Nitrogen in the Environment - Sources, Problems, and Management. :333-393.
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.
Journal Article
Field C.D., Sheppard L.J., Caporn S.J.M., Dise N.B..  2013.  The ability of contrasting ericaceous ecosystems to buffer nitrogen leaching. Mires and Peat. 11:Article5.
Payne R.J., Jassey V.E.J., Leith I.D., Sheppard L.J., Dise N.B., Gilbert D..  2013.  Ammonia exposure promotes algal biomass in an ombrotrophic peatland. Soil Biology & Biochemistry. 57:936-938.
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.
Prendergast M., Cole L., Standen V., Rees R., Parker J., Leith I., Sheppard L.J..  2008.  Are enchytraeid worms (Oligochaeta) sensitive indicators of ammonia-N impacts on an ombrotrophic bog? European Journal of Soil Biology. 44(1):101-108.
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.
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.
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
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.
García M.A.Solera, Timmis R.J., van Dijk N., Whyatt J.D., Leith I.D., Leeson S.R., Braban C.F., Sheppard L.J., Sutton M.A., Tang Y.S..  2017.  Directional passive ambient air monitoring of ammonia for fugitive source attribution; a field trial with wind tunnel characteristics.. Atmospheric Environment. 167:576-585.
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.