Room: 4ES 3.5
Tel: +44 (0) 1225 383359
Interested in supervising students studying:
- Biogeochemical cycling
- Lake and reservoir management
- Using oxygenation and other engineered methods to improve and/or maintain water quality
Dr Lee Davis Bryant
Lee Bryant is a Lecturer in the Water, Environment and Infrastructure Research (WEIR) group within the Architecture and Civil Engineering Dept. Her research interests include biogeochemistry and cross-media mass transfer with a link to sustainable geoenvironmental engineering. Her key focus is characterising how sediment-water fluxes influence water quality in lakes, drinking-water supply reservoirs and oceans.
Lee performed her doctoral work jointly between Virginia Tech (Virginia, USA) and Eawag (Lucerne, CH); this research focused on the effects of dynamic turbulence on benthic oxygen conditions and the influence of variations in turbulence and oxygen levels on the biogeochemical cycling of manganese and iron. After obtaining her PhD degree in 2010, Lee did postdoctoral work at Duke University (North Carolina, USA) and ETH (Zurich, CH) which focused on using voltammetric methods to measure reduced metal species within the sediment and the water column. She then obtained a postdoctoral-research position at the Helmholtz Centre for Ocean Research Kiel – GEOMAR (Kiel, DE) to assess oxygen fluxes using the eddy-correlation method and to evaluate nutrient cycling in oceanic oxygen minimum zones.
Lee joined the University of Bath as a Prize Fellow in 2014 and became a Lecturer in 2016.
Lee’s research is based on how turbulence and oxygen levels, both natural (e.g., via wind) and engineered (e.g., via hypolimnetic oxygenation systems), affect the 1) biogeochemical cycling of nutrients and metals and 2) corresponding water quality and ecosystem health.
Lee’s expertise and research focuses on biogeochemical cycling in aquatic systems with specialization in the mass transport of oxygen, metals and nutrients within the water column and at the sediment-water interface within both marine and freshwater systems. She typically uses a largely field-based approach to her research and has a solid background in using in water-quality-based in situ sampling and the use of microsensor and voltammetric technology to monitor and model these processes. Her research group is currently focusing on:
- The influence of aeration on the biogeochemistry of drinking-water-supply reservoirs
- Effects of seasonal algal blooms on marine benthic oxygen dynamics
- The geochemical, microbial and hydrologic characteristics of storm runoff loads within an informal settlement
- The influence of bioturbation and respiration on oxygen and trace metal cycling
Collender, P. A., Cooke, O. C., Bryant, L. D., Kjeldsen, T. R. and Remais, J., 2017. Estimating the microbiological risks associated with inland flood events:bridging theory and models of pathogen transport. Critical Reviews in Environmental Science and Technology, 46 (23-24), pp. 1787-1833.
Steinle, L., Schmidt, M., Bryant, L., Haeckel, M., Linke, P., Sommer, S., Zopfi, J., Lehmann, M. F., Treude, T. and Niemannn, H., 2016. Linked sediment and water-column methanotrophy at a man-made gas blowout in the North Sea:implications for methane budgeting in seasonally stratified shallow seas. Limnology and Oceanography, 61 (S1), S367-S386.
Rovelli, L., Attard, K. M., Bryant, L. D., Flögel, S., Stahl, H., Roberts, J. M., Linke, P. and Glud, R. N., 2015. Benthic O2 uptake of two cold-water coral communities estimated with the non-invasive eddy correlation technique. Marine Ecology Progress Series (MPES), 525, pp. 97-104.
Dale, A. W., Sommer, S., Lomnitz, U., Montes, I., Treude, T., Liebetrau, V., Gier, J., Hensen, C., Dengler, M., Stolpovsky, K., Bryant, L. D. and Wallmann, K., 2015. Organic carbon production, mineralisation and preservation on the Peruvian margin. Biogeosciences, 12 (5), pp. 1537-1559.
Lowry, G. V., Espinasse, B. P., Badireddy, A. R., Richardson, C. J., Reinsch, B. C., Bryant, L., Bone, A. J., Deonarine, A., Chae, S., Therezien, M., Colman, B. P., Hsu-Kim, H., Bernhardt, E. S., Matson, C. W. and Wiesner, M. R., 2012. Long-term transformation and fate of manufactured Ag nanoparticles in a simulated large scale freshwater emergent wetland. Environmental Science & Technology, 46 (13), pp. 7027-7036.
Bryant, L., Little, J. C. and Bürgmann, H., 2012. Response of sediment microbial community structure in a freshwater reservoir to manipulations in oxygen availability. FEMS Microbiology Ecology, 80 (1), pp. 248-263.
Bryant, L., Hsu-Kim, H., Gantzer, P. A. and Little, J. C., 2011. Solving the problem at the source:controlling Mn release at the sediment-water interface via hypolimnetic oxygenation. Water Research, 45 (19), pp. 6381-6392.
Bryant, L., Gantzer, P. A. and Little, J. C., 2011. Increased sediment oxygen uptake caused by oxygenation-induced hypolimnetic mixing. Water Research, 45 (12), pp. 3692-3703.
Bryant, L., McGinnis, D. F., Lorrai, C., Brand, A., Little, J. C. and Wüest, A., 2010. Evaluating oxygen fluxes using microprofiles from both sides of the sediment-water interface. Limnology and Oceanography, 8 (Nov), pp. 610-627.
Bryant, L. D., Lorrai, C., McGinnis, D. F., Brand, A., Wüest, A. and Little, J. C., 2010. Variable sediment oxygen uptake in response to dynamic forcing. Limnology and Oceanography, 55 (2), pp. 950-964.
Gantzer, P. A., Bryant, L. and Little, J. C., 2009. Effect of hypolimnetic oxygenation on oxygen depletion rates in two water-supply reservoirs. Water Research, 43 (6), pp. 1700-1710.
Gantzer, P. A., Bryant, L. and Little, J. C., 2009. Controlling soluble iron and manganese in a water-supply reservoir using hypolimnetic oxygenation. Water Research, 43 (5), pp. 1285-1294.
Gantzer, P. A., Bryant, L. D. and Little, J. C., 2009. Lake and Reservoir Management – 2009 Literature Review. Water Environment Research, 81 (10), pp. 1854-1956.
Sherman, B., Bryant, L., Mobley, M., Ford, P., McGinnis, D. F., Singleton, V., Schafran, G. and Little, J. C., 2012. Review of oxygenation technologies with special reference to application in the Upper Swan Estuary:Report to the Western Australia Dept. of Water, Water and Rivers Commission. CSIRO. (CSIRO Land and Water Science Report)
McGinnis, D. F., Beaubien, S. E., Bigalke, N., Bryant, L., Celussi, M., Comici, C., De Vittor, C., Feldens, P., Giani, M., Karuza, A., Schneider, J. and Deimling, V., 2011. The Panarea Natural CO2 Seeps:Fate and Impact of the Leaking Gas (PaCO2). GEOMAR Helmholtz Centre for Ocean Research Kiel. (Eurofleet’s Cruise Report; U10/2011)
Sherman, B., Singleton, V., Schafran, G., Mobley,, M., McGinnis, D. F., Bryant, L. and Little, J. C., 2007. Review of oxygenation technologies with special reference to application in the Upper Swan Estuary:Report to the Western Australia Dept. of Water, Water and Rivers Commission. CSIRO. (CSIRO Land and Water Science Report)
Conference or Workshop Items
Bryant, L., 2009. The effect of nanoparticles on redox gradients at the sediment-water interface. In: International Conference for Environmental Implications of Nanotechnology & EPA Nano Grantees Meeting, 2011-05-09 - 2011-05-11, Washington Duke Inn, Durham, NC.
Bryant, L., 2006. Spatial and temporal variations in sediment oxygen demand as a function of sediment loading, oxygen concentration and turbulence. In: National Science Foundation(NSF) 2006 Integrative Graduate Education and Research Traineeship (IGERT) Project Meeting, 2006-05-14 - 2006-05-16.
Bryant, L., 2015. Ocean 'dead zones' are spreading - and that spells disaster for fish. The Ecologist
Bryant, L., 2015. Ocean ‘dead zones’ are spreading – and that spells disaster for fish. The Conversation