My research interests include biogeochemical processes in subsurface environments, especially microbially-mediated processes and the implications of these processes for ecosystem functions including carbon use efficiency and respiration. My current research is focused on predicting microbial growth efficiency and therefore biomass concentrations in real environments when there are heterogeneous carbon sources available and mixotrophic metabolisms might be favourable. Mixotrophic metabolisms are those which use more than one source of carbon and energy, and therefore couple carbon fixation and respiration. The objectives of my research are to establish an energetics-based model to predict growth yields for mixotrophic metabolisms and to test these predictions using lab experiments with a focus on nitrate reducing iron oxidizing metabolisms. This research has applications in reactive transport modeling, biotechnology, bioremediation, and biogeography.
Office: EIT 2001
Phone: 519-888-4567 ext. 31326
Supervisor: Dr. Philippe Van Cappellen, University of Waterloo
Dr. Carol Ptacek, University of Waterloo
Dr. Laura Hug, University of Waterloo