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Dr Mike Williams

Professor Mike Williams Department of Botany,
School of Natural Sciences,
Trinity College Dublin,
Dublin2, Ireland

Tel: +353 1 8962421


My research centres on the impacts of agriculture on the environment, in particular nitrogen pollution and the mitigation of greenhouse gas emissions through crop management and land use change (Ecophysiology and Soil Science). My current research includes the modelling of nitrous oxide flux and soil respiration from grasslands and cereal crops in Ireland to understand how future climate change may affect these soil processes. A particular focus of my present research is the potential of legume crops in Europe to reduce N pollution and increase biodiversity.

Previous research interests are wide and I have published on assimilate distribution in plants in relation to cell specialisation and also metabolic aspects of chloroplast symbiosis.

Current Research and Research Opportunities

My present research students are involved in measurements of N fixation, leaching and nitrous oxide flux through both the FP7 Legumes Futures project and research contracts with Teagasc and the Department of Agriculture. I have supervised 9 PhD projects both national and international, over ten MSc projects and approx. 40 undergraduate research projects.


I teach the full spectrum of students from freshmen to post graduate. My current modules are BY1102 (Introduction to Evolution, Biodiversity and the Environment, BO3100 (Plant Physiology), BO3104 (Anatomy Ultra-structure and Metabolism of Plants), BO3121 (Field Skills in Plant & Environmental Sciences - Canary Islands), BO4105 (Global Environmental Change), ES3055 (Introduction to Environmental Sciences), ES4052 (Environmental Science Seminars), FB4050 (Tutorials in Plant Science) and ES7302 (Desk Studies), Diploma in Sustainable Energy (Department of Civil Engineering)

Selected Publications

Abdalla, M., Rueangritsarakul, K., Jones, M., Osborne, B., Helmy, M., Roth, B., Burke, J., Nolan, P., Smith, P and Williams, M. (2012) How Effective is Reduced Tillage-Cover Crop Management in Reducing N2O Fluxes from Arable Crop Soils?, Water, Air and Soil Pollution, DOI 10.1007/s11270-012-1268-4

Abdalla, M., Smith, P, and Williams, M.L. (2011). Emissions of Nitrous Oxide from Agriculture: Responses to Management and Climate Change in, editor(s) Lei Guo, Amrith S. Gunasekara, Laura L. McConnell, Understanding Greenhouse Gas Emissions from Agricultural Management, American Chemical Society, pp343 – 370.

Abdalla, M.,Kumar, S., Jones,M., Burke, J. and Williams, M. (2011) Testing DNDC model for simulating soil respiration and assessing the effects of climate change on the CO2 gas flux from Irish agriculture, Global and Planetary Change, 78,106-115

Abdalla, M., Jones, M., Ambus, P., Wattenbach, M., Smith, P. and Williams, M. (2010) Emissions of Nitrous oxide from arable soils: Effects of tillage, reduced N input and climate change, Proceedings of the International Soil Science Congress on Management of Natural Resources to Sustain Soil Health and Quality, International Soil Science Congress on Management of Natural Resources to Sustain Soil Health and Quality, Samsun, Turkey, May 26 - 28, 2010, edited by R. Kizilkaya, C.Gulser, O.Dengiz , Ondokuz Mayis University, Samsun, Turkey, 2010, pp235 - 245

Abdalla, M., Jones, M., Ambus, P. and Williams, M. (2010) Emissions of Nitrous Oxide from Irish Arable Soils: Effects of Tillage and Reduced N input. Nutrient Cycling in Agroecosystems, 86, 53 – 65.

Abdalla, M., Jones, M., Yeluripati, J., Smith, P.,  Burke. J. and Williams, M. (2010) Testing DayCent and DNDC model simulations of N2O fluxes and assessing the impacts of climate change on the gas flux and biomass production from a humid pasture. Atmospheric Environment, 44, (25), 2961 – 2970.

Abdalla, M., Jones, M., Smith, P. and Williams, M. (2009) Nitrous oxide fluxes and denitrification sensitivity to temperature in Irish pasture soils. Soil Use and Management. DOI: 10.1111/j.1475-2743.2009.00237.x

Abdalla, M.,  Wattenbach, M.,  Smith, P., Ambus, P.,  Jones, M and Williams, M. (2009) Application of the DNDC model to predict emissions of N2O from Irish agriculture. Geoderma, 151 327 – 337.

Abdalla, M., Jones, M., Ambus, P. and Williams, M. (2009) Emissions of nitrous oxide from Irish arable soils: effects of tillage and reduced N input. Nutrient Cycling in Agroecosytems. DOI: 10.1007/s10705-009-9273-8

Bahn, M., Anderson, M., Dore, S., Gimeno, C., Drösler, M., Williams, M., Acosta, M., Ammann, C., Berninger, F., Flechard, C., Jones, S., Kumar, S., Newesely, R.S., Pavelka, M., Priwitzer, T., Raschi, A., Siegwolf, R., Susiluto, S., Tenhunen, J., Wohlfahrt, G., and Cernusca, A., (2008), Soil respiration in European grasslands in relation to climate and assimilate supply. Ecosystems, 11, 1352 – 1367

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Last updated 6 July 2015