Browsing Science (Faculty of) by Supervisor "Rezanezhad, Fereidoun"
Now showing items 1-11 of 11
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Environmental sensitivities of coupled biogeochemical cycles in anoxic conditions: from soil batch experiments to a bioenergetics approach
(University of Waterloo, 2021-01-26)The ongoing displacement of climate zones has aggravated warming effects at regions from mid- to high-latitudes, affecting terrestrial organic carbon (C) stores. Amplified effects of warming occurring through the winter ... -
Field derived phosphorus accumulation rates and fractionation in bioretention cells
(University of Waterloo, 2022-09-23)Bioretention cells are commonly used green infrastructure in urban stormwater management systems. They show promising performance in managing stormwater and mitigating a multitude of pollutants. In urban catchments, they ... -
Gallium isotope fractionation during adsorption on clay and oxide minerals: implications for using gallium isotopes as a geochemical tracer
(University of Waterloo, 2022-05-02)Increasing climate change leads to the imbalance between silicate, sulfide, and carbonate weathering fluxes, influencing the global carbon budget. Thus, understanding this balance is critical for understanding future global ... -
Hydrobiogeophysics: Linking geo-electrical properties and biogeochemical processes in shallow subsurface environments
(University of Waterloo, 2018-12-13)Microbially mediated reactions drive (bio)geochemical cycling of nutrients and contaminants in shallow subsurface environments. Environmental forcings exert a strong control on the timing of reactions and the spatial ... -
Impact of Winter Soil Processes on Nutrient Leaching in Cold Region Agroecosystems
(University of Waterloo, 2021-02-25)High-latitude cold regions are warming more than twice as fast as the rest of the planet, with the greatest warming occurring during the winter. Warmer winters are associated with shorter periods of snow cover, resulting ... -
The influence of soil moisture, oxygen, and temperature on naphthalene biodegradation and CO2 and CH4 effluxes
(University of Waterloo, 2023-09-22)Petroleum hydrocarbons (PHCs) are essential to the functioning of the industrialized world yet serve a potential threat to human and ecosystem health when they inadvertently enter the environment. In recent decades, ... -
Linking soil moisture content and carbon dioxide fluxes: From batch experiments to process-based modelling
(University of Waterloo, 2020-02-19)The emissions of carbon dioxide (CO2) from soil to the atmosphere represent a major flux within the global carbon cycle. Soil CO2 fluxes depend on environmental factors including soil moisture and oxygen, and on intrinsic ... -
Natural source zone depletion of petroleum hydrocarbons under variable temperature and moisture conditions
(University of Waterloo, 2023-02-15)In subsurface environments contaminated by petroleum hydrocarbons (PHCs), the steep geochemical and redox gradients near the water table, the oxygen availability, moisture content, salinity, pH, nutrient concentrations and ... -
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 ... -
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 ...