Browsing Science (Faculty of) by Supervisor "Schiff, Sherry"
Now showing items 1-10 of 10
-
Carbon Cycling in a Glacier Ice Meltwater Impacted Freshwater System of the Canadian High Arctic: Biogeochemical Processes of the Lake Hazen Watershed
(University of Waterloo, 2022-03-23)Accelerated glacier ice mass loss and intensified meltwater fluxes are among principal vectors of change affecting northern latitudes in a warming climate. Aquatic systems impacted by glacier ice meltwater are vulnerable ... -
The Control of Fe and pH on the Photodegradation and Characterization of Dissolved Organic Matter in Small, Oligotrophic Canadian Shield Freshwaters
(University of Waterloo, 2017-05-19)Carbon is an essential building block for life and is involved in many biotic and abiotic processes. Thus it is imperative to have a comprehensive understanding of carbon cycling. Recent research has established that inland ... -
Dissolved inorganic nitrogen cycling in a river receiving wastewater: the response to changes in wastewater treatment effluent
(University of Waterloo, 2016-01-27)Nitrogen is an essential element for all life forms, but when in excess in an aquatic ecosystem, it can cause an imbalance in the trophic status. A significant amount of nitrogen is released into the environment by wastewater ... -
Dissolved Organic Matter in the Canadian Arctic & Sub-Arctic: Importance of DOM Quality & Quantity in a Warming Climate
(University of Waterloo, 2019-08-28)Dissolved organic matter (DOM) is a ubiquitous component of aquatic and terrestrial systems and an important constituent that can influence aquatic health and drinking water quality. For instance, DOM can act as an important ... -
Effects of Hydroelectric Dams on Downstream Oxygen and Nitrogen in the Grand River and Conestogo River
(University of Waterloo, 2016-08-18)As the global population has increased, so has the need for water supply and energy. Dams have been a point of contention for many years. In some regions they are increasing in importance, but new constructions are ... -
Multi-decade comparison of groundwater nitrate in the southern Nottawasaga River Watershed
(University of Waterloo, 2016-08-25)The Nottawasaga River Watershed is host to the Lake Algonquin Sand Aquifer (LASA), an unconfined aquifer that consists of glaciolacustrine sands and provides water supply to rural residents, for household use, and for ... -
Paradigm Shift: Does River Metabolism Mask the Isotopic Signal of Nitrate Sources?
(University of Waterloo, 2017-05-19)Nitrate (NO₃⁻) is the most ubiquitous contaminant in surface and groundwaters in Canada. Synthetic fertilizer application and manure production in intensive agricultural areas contribute large quantities of NO₃⁻ to the ... -
Persistence of Artificial Sweeteners, Phosphorus and Nitrogen in Three Septic System Plumes with Differing Redox Conditions
(University of Waterloo, 2018-10-31)Septic systems are widely used for on-site wastewater treatment throughout Canada, including at most of Ontario’s provincial parks. They are frequently located in unconfined aquifer systems that may also be used for water ... -
The Role of Nitrate in Controlling Iron Release from Sediment during Anoxia in Dimictic, Fresh Water Lakes
(University of Waterloo, 2018-01-16)Recent research suggests the availability of reduced iron (Fe) is key in allowing cyanobacteria to outcompete eukaryotic phytoplankton. Cyanobacteria have a greater need for Fe than their eukaryotic competition and are ... -
The use of stable isotopes to assess the controls on pelagic carbon basal resources in Canadian Shield lakes
(University of Waterloo, 2021-06-02)Freshwater lakes are often natural sources of greenhouse gases (GHGs) such as carbon dioxide (CO₂) and methane (CH₄) to the atmosphere, and therefore it is important to examine carbon and nutrient cycling in these complex ...