Browsing Earth and Environmental Sciences by Supervisor "Van Cappellen, Philippe"
Now showing items 21-25 of 25
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Phosphorus Legacies and Water Quality Risks: A Vulnerability-Based Framework in Southern Ontario
(University of Waterloo, 2019-12-20)Excess phosphorus (P) loading increases the frequency of harmful algal blooms (HABs), posing severe threats to drinking water security and aquatic ecosystems. Efforts to reduce the inputs of P to Canadian agricultural soils ... -
Quantitative modeling of nitrogen cycling along the river continuum: streambed sediments, reservoirs, and isotopes
(University of Waterloo, 2018-09-26)The vast release of anthropogenically produced reactive nitrogen (N) into the environment, by agricultural activities, energy production and municipal wastewater, has led to a variety of consequences for atmospheric, ... -
Soil Oxygen Monitoring with Fibre Optode Sensors: Experimental Evaluation in Soil Columns under Fluctuating Water Table and Freeze Thaw Conditions
(University of Waterloo, 2017-01-23)The biogeochemical functioning of natural and engineered environments is closely linked to spatial and temporal variations in molecular oxygen (O2) concentrations. A luminescence-based, Multi-Fibre Optode (MuFO) microsensor ... -
Tracing Redox Cycles during Microbe-Clay Interactions Using Stable Iron Isotopes
(University of Waterloo, 2018-10-17)Iron redox cycling, especially Fe(III) reduction, is mostly driven by microbial activity in the shallow subsurface. A wide range of bacteria, archaea, and fungi reduce Fe(III) to acquire energy with soil organic compounds ... -
Transport and Retention of Particulate Organic Matter in Riverbed Sediments: Laboratory Experiments and Modelling
(University of Waterloo, 2022-09-22)Infiltration of river water into riverbeds can deliver particulate organic matter (POM: the remains of plants, algae, and other life), which has an important role for transforming nutrients in watersheds. Once POM is ...