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Dr. Michael Williams

Assistant Professor (Botany)

Assistant Professor (Trinity Centre for the Environment)

Dr. Michael Williams joined the College in 1992 as a joint lecturer in the Botany Department and the Environmental Science Unit (now the Trinity College Centre for Environment). He is a member of the Plant Physiology research group. His primary research activity centers on the measurement and modeling of below ground soil processes in agricultural systems. Other research interests include photosynthesis and respiration in higher plants and algae. Ongoing Projects Measurement and modeling of soil respiration in arable and pasture soils. Funding Agency - EPA and EU Measurement and modeling of nitrous oxide emissions in agricultural soils Funding Agency - EPA Soil mineralization and pasture management in a Mayo catchment. Funding Agency - Teagasc Previous Projects Physiological studies of salt tolerance in Plantago maritima. Funding Agency - Enterprise Ireland Respiration and carbohydrate metabolism in higher plants. Funding Agency - Enterprise Ireland
  Agri Environment   Agronomy   Algae   Chloroplasts   Plant Biochemistry   Plant physiology   Soil Science
 Fluxes of Nitrous Oxide from Arable Soils: Emission Factors, Annual Totals and Predictive Modelling.
 Greenhouse gas emissions from European grasslands: field manipulation studies
 Legume Futures

Marcela Porto Costa, Sophie Saget, Beate Zinnermann, Eckant Petig, Elisabeth Angenendt, Robert M. Rees, David Chadwick, James Gibbons, Shailesh Shrestha, Michael Williams, David Styles, Environmental and land use consequences of replacing milk and beef with plant-based alternatives., Journal of Cleaner Production, 2023, Journal Article, PUBLISHED  DOI
Sophie Saget, Marcela Porto Costa, Kirsty Black, Pietro P.M. Iannetta, Moritz Reckling, David Styles, Michael Williams, research, Sustainable Production and Consumption, 34, 2022, p330 - 340, Journal Article, PUBLISHED
Marcela Porto Costa, David Chadwick, Sophie Saget, Robert Rees, Michael Williams, David Styles, Review, The International Journal of Life Cycle Assessment, 25, 2021, p1942 - 1956, Journal Article, PUBLISHED
Costa M.P., Reckling M., Chadwick D., Rees R.M., Saget S., Williams M., Styles D. , ) Legume-Modified Rotations Deliver Nutrition With Lower Environmental Impact. , Frontiers in Sustainable Food Systems, 5, 2021, Journal Article, PUBLISHED  DOI
Saget, S., Costa, M. P., Santos, C. S. Vasconcelos, M., Styles, D., Williams, M. , Comparative life cycle assessment of plant and beef-based patties, including carbon opportunity costs., Sustainable Production and Consumption, 28, 2021, p936 - 952, Journal Article, PUBLISHED
Saget, S.,Costa, M., Styles, D., Williams, M. , Does Circular Reuse of Chickpea Cooking Water to Produce Vegan Mayonnaise Reduce Environmental Impact Compared with Egg Mayonnaise? , Sustainability, 13, 2021, p4726-, Journal Article, PUBLISHED  DOI
Saget, S., Costa, M., Sancho Santos, C., Wilton Vasconcelos, M., Gibbons, J., Styles, D., Williams, M. , Substitution of beef with pea protein reduces the environmental footprint of meat balls whilst supporting health and climate stabilisation goals, Journal of Cleaner Production, 297, 2021, p126447-, Journal Article, PUBLISHED  DOI
Madigan, A.P., Zimmerman, J., Krol, D., Williams, M., Jones, M.B., Full Inversion Tillage (FIT) during pasture renewal as a potential management strategy for enhanced carbon sequestration and storage in Irish grassland soils, Science of the Total Environment, 805, 2021, Journal Article, PUBLISHED  DOI
Pietro Paolo Michele Iannetta, Cathy Hawes, Graham Begg, Henrik Maaß, Georgia Ntatsi, Dimitrios Savvas, Marta Wilton Vasconcelos, K Hamann, Michael Leonard Williams, David Styles, Luiza Toma, Shailesh Shrestha, Bálint Balázs, Eszter Kelemen, Marko Debeljak, Aneta Trajanov, R Vickers, Robert Martin Rees, A Multifunctional Solution for Wicked Problems: Value-Chain Wide Facilitation of Legumes Cultivated at Bioregional Scales Is Necessary to Address the Climate-Biodiversity-Nutrition Nexus, Frontiers in Sustainable Food Systems, 2021, Journal Article, PUBLISHED  DOI
The Biology of Legumes and Their Agronomic, Economic, and Social Impact in, editor(s)Hasanuzzaman M., Araújo S., Gill S. , The Plant Family Fabaceae, Singapore, Springer, 2020, [Vasconcelos, M.W., Grusak, M.A., Pinto, E., Gomes, A., Ferreira, H., Balázs, B., Centofanti, T., Ntatsi, G., Savvas, D., Karkanis, A., Williams, M., Vandenberg, A., Toma, L., Shrestha, S., Akaichi, F., Barrios, C.O., Gruber, S., James, E.K., Maluk, M., Karley, A., Iannetta, P.], Book Chapter, PUBLISHED  DOI

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Mike Williams, Lavender and Haddock, USA, Createspace, 2015, Notes: [ISBN-10: 151684498X ISBN-13: 978-1516844982], Book, PUBLISHED
Mike Williams, Educating Creatures, USA, Createspace, 2015, Notes: [ISBN-10: 1516959698 ISBN-13: 978-1516959693], Book, PUBLISHED
Mike Williams, The Allure iof the Red Wyrm, USA, Createspace, 2015, Notes: [ISBN-10: 1517020654 ISBN-13: 978-1517020651], Book, PUBLISHED
Michael Williams, Jane Stout, Brendan Roth, Susannah Cass, Valentini Pappa and Bob Rees, Legume Futures Report 3.7 Environmental implications for legume cropping, 2014, Report, PUBLISHED
Michael Williams, Jane Stout, Susannah Cass, Jenny Fischer, Hewart Böhm, Donal Murphy-Bokern, Tom Kuhlman, Fred L. Stoddard, Kristina Lindström, Christine Watson, Valentini Papa, Kairsty Topp, Moritz Reckling, Sara Preißel, Andrea Bues, Peter Zander, Marie Trydeman Knudsen, Jørgen E. Olesen, John E. Hermansen, Kirsten Schelde, Legume Futures Report 3.8/6.6 Policy implications of the environmental and resource effects of legume cropping, 2014, Report, PUBLISHED
Stoddard, F.L., Williams, M.L., Sampling and measurement protocols for field experiments assessing the performance of legume-supported cropping systems. Legume Futures Report 1,, 2011, Report, PUBLISHED


Award Date
PhD 1986
Soil respiration and carbon stocks Nitrous oxide emissions from agricultural soils Soil mineralisation Photosynthesis Carbohydrate partitioning in higher plants Plant cell anatomy Chloroplast symbiosis