Since 2012, we have worked with rare at Bauman Creek and at agricultural fields to study riparian-aquifer interactions and their influence on riparian biogeochemistry and agricultural soil nutrient and carbon dynamics and the biogeochemistry of reactive interfaces at the rare field sites.
Publications from our work at rare:
Pronk, G.J., Mellage, A., Milojevic, T., Smeaton, C.M., Engel, K., Neufeld, J.D., Rezanezhad, F., and Van Cappellen, P. (2020). Carbon turnover and microbial activity in an artificial soil under imposed cyclic drainage and imbibition. Vadose Zone Journal 19, e20021. doi: 10.1002/vzj2.20021
Krogstad, K. (2021). Impact of Winter Soil Processes on Nutrient Leaching in Cold Region Agroecosystems. MSc thesis.
Fairbairn, L. (2020). Linking soil moisture content and carbon dioxide fluxes: From batch experiments to process-based modelling. MSc thesis.
Niederkorn, A. (2015). Surface-subsurface hydrologic exchange and nutrient dynamics in a groundwater-fed stream, Bauman Creek, Ontario, Canada. MSc thesis.
Urban green infrastucture and stormwater monitoring sites: Stormwater pond, storm sewers and bioretention cell sites, 2018-present
Since 2019, we have been working with the City of Richmond Hill, Toronto and Region Conservation Authority (TRCA), and Credit Valley Conservation via NSERC-funded research to understand phosphorus and other nutrients' retention and transport in urban landscapes by collecting data at these field sites to develop models to forecast the impact of climate change on these processes.
Cootes Paradise Marsh, 2012 to present
Cootes Paradise Marsh suffers from extensive summer algal growth due to nutrient excess, particularly phosphorus. An ongoing study here aims to improve our understanding of how and when the sediment switches between acting as a sink of nutrients to becoming a source.
Publications from our work at Cootes Paradise:
Parsons C.T., Rezanezhad F., O'Connell D.W., and Van Cappellen P. (2017) Sediment phosphorus speciation and mobility under dynamic redox conditions. Biogeosciences. doi:10.5194/bg-14-3585-2017.
Fanshawe Reservoir and Thames River, 2018-2020
Publications from our work at Fanshawe Reservoir and the Thames River:
Kao, N. (2020). Influence of a dammed reservoir on nutrient (N, P, Si) loads and ratios of the Thames River, Ontario. MSc thesis.
Yu, S. (2020). Modeling phosphorus cycling in a seasonally stratified reservoir (Fanshawe Reservoir, Ontario, Canada). MSc thesis.
Sampling of urban and rural beaches along Lakes Ontario and Huron to determine the groundwater contribution of nutrient and fecal contamination to the Great Lakes. Click the title for more information.
Click the title for a photo diary by Dr. David O'Connell. Special thanks to Dr. Diane Orihel for her invaluable help before, during, after the trip.
Lake 227, August 18-22, 2013
Publication from our work at Lake 227 at the IISD-ELA:
O'Connell, D.W., Ansems, N., Kukkadapu, R.K., Jaisi, D., Orihel, D.M., Cade-Menun, B.J., Hu, Y., Wiklund, J., Hall, R.I., Chessell, H., Behrends, T., and Van Cappellen, P. (2020). Changes in sedimentary phosphorus burial following artificial eutrophication of Lake 227, Experimental Lakes Area, Ontario, Canada. Journal of Geophysical Research: Biogeosciences 125, 5713. doi: 10.1029/2020JG005713
Beverly Swamp Flood Pulse, October 2012 to October 2013
Global and Mail article (16 Oct 2013) Ontario swamp faces manufactured flood by TENILLE BONOGUORE.