Year: 2020, 2020
Member of: Trent University Graduate Thesis Collection
Abstract: <p>This thesis examines how dissolved organic matter quantity and quality and nutrients influence the flux potential of greenhouse gases (GHG) from sediments collected from streams across southern Ontario as well as Lake Erie. Sediments were collected and incubated in a laboratory setting where headspace gases and interstitial waters were analyzed. Results demonstrated that nutrients (… more Full Text: POTENTIAL FOR GREENHOUSE GAS EMISSIONS FROM SEDIMENTS OF AGRICULTURAL STREAMS AND LAKE ERIE A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the Faculty of Arts and …
Year: 2020, 2020
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Thawing permafrost due to increasingly warm temperatures in northern subarctic regions is releasing mercury. The consequent formation of thaw ponds in the peatland palsa valley of the Sasapimakwananisikw (SAS) river in Whapmagoostui-Kuujjuarapik, Québec may provide a pool for MMHg formation and a potential risk to aquatic and human life, if these ponds facilitate MMHg export through… more Full Text: ASSESSING LIMNOLOGICAL CHARACTERISTICS OF SUBARCTIC QUÉBEC THAW PONDS AND MERCURY METHYLATION AND METHYLMERCURY DEMETHYLATION WITHIN THEIR SEDIMENTS A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the …