Year: 2023, 2023
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Karl, Katrina Anna-Marie, Thesis advisor (ths): Aherne, Julian, Degree committee member (dgc): Sager, Eric, Degree committee member (dgc): Liang, Tanner, Degree committee member (dgc): Hickie, Brendan, Degree committee member (dgc): McKenna-Neuman, Cheryl, Degree granting institution (dgg): Trent University Abstract: <p>Plastic pollution is a growing concern, owing to its durability, ubiquity, and potential health impacts. The overall objective of this study was to assess the abundance and distribution of microplastics within Lake Scugog catchment, Ontario. This was fulfilled through two tasks (i) the development of a microplastic particle budget for the lake catchment, and (ii) the determination of the… more Full Text: Abundance and Distribution of Microplastics in Lake Scugog Catchment, Ontario A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfilment of the Requirements for the Degree of Master of Science in the Faculty of Arts and Science TRENT …
Year: 2021, 2021
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Johannessen, Cassandra, Thesis advisor (ths): Metcalfe, Chris D, Thesis advisor (ths): Parnis, J. Mark, Degree committee member (dgc): Metcalfe, Chris D, Degree committee member (dgc): Parnis, J. Mark, Degree committee member (dgc): Dang, Huy, Degree committee member (dgc): Hickie, Brendan, Degree granting institution (dgg): Trent University Abstract: <p>Road runoff is a vector for the transport of potentially toxic chemicals into receiving waters. In this study, selected tire-derived chemicals were monitored in surface waters of rivers adjacent to two high traffic highways in the Greater Toronto Area in Ontario, Canada. Composite samples were collected from the Don River and Highland Creek in the GTA during 5 hydrological events that… more Full Text: Monitoring and fate of selected tire-derived organic contaminants 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 Science TRENT UNIVERSITY …
Year: 2020, 2020
Member of: Trent University Graduate Thesis Collection
Abstract: <p>This thesis investigated coloured and fluorescent dissolved organic matter in the Canada Basin, Arctic Ocean from 2007 to 2017. The first interannual time-series of its kind in the Canada Basin incorporated the use of EEM-PARAFAC to validate a seven-component model. Statistical temporal tests revealed (1) an increasing protein-like intensity in the upper polar mixed layer (UPML); (2)… more Full Text: Temporal Variability of Coloured Dissolved Organic Matter in the Canada Basin, Arctic Ocean (2007-2017) A thesis submitted to the committee of Graduate Studies in partial fulfillment of the requirements for the degree of Master of Science in the Faculty …
Year: 2019, 2019
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Mixtures of metals occur in surface waters, toxicity of which has drawn world-wide attention due to their crucial role in both ecotoxicology and regulations. The present research was undertaken to study the acute toxicity of binary mixtures of Ni, Cu, Zn, and Cd to the freshwater organism, Daphnia magna. The experimental approach included single and binary metal toxicity tests based on… more Full Text: EFFECT ASSESSMENT OF BINARY METAL MIXTURES OF Ni, Cu, Zn, and Cd TO Daphnia magna A Dissertation Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy of Science in the Faculty of …
Year: 2019, 2019
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Environmental monitoring and investigation of metal biogeochemical cycling has been</p><p>carried out in the Pearl River Estuary (PRE), an important and complex system in Southern</p><p>China. In this study, rare earth element (REE) patterns as well as isotope ratios (i.e., Zn and Cd)</p><p>were evaluated as tools to identify contamination sources in… more Full Text: AN INVESTIGATION OF RARE EARTH ELEMENT PATTERNS AND AN APPLICATION OF USING ZN AND CD ISOTOPE RATIOS IN OYSTERS TO IDENTIFY CONTAMINATION SOURCES IN AN ESTUARY IN SOUTHERN CHINA A Thesis Submitted the Committee on Graduate Studies in Partial Fulfillment …
Year: 2017, 2017
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Socio-ecological systems are inherently complex and marine mammals are fundamentally challenging to study. In the Arctic, marine mammals occupy a central ecological role, as nutrient cyclers and as a source of food and culture for Indigenous peoples. Inuit have developed a rich knowledge system, which has not been fully actualized in application in most Arctic research. Considering the… more Full Text: NUNAVIK INUIT KNOWLEDGE OF BELUGA: USING MULTIPLE METHODS, TOOLS, AND APPLICATIONS TO ENHANCE OUR UNDERSTANDING OF MARINE MAMMAL ECOLOGY A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>This thesis explored the contribution of mixed methods approaches to marine mammal science through the use of concurrent and sequential designs to study distribution and feeding ecology of bowhead whales (Balaena mysticetus) in the Arctic region of Nunavik, Quebec, Canada. The study combines Inuit knowledge (IK), collected through semi-directed interviews with Inuit harvesters, and… more Full Text: MIXED METHODS APPROACHES IN MARINE MAMMAL SCIENCE: A CASE STUDY OF THE BOWHEAD WHALE DISTRIBUTION PATTERNS AND FEEDING ECOLOGY IN THE EASTERN CANADIAN ARCTIC (NUNAVIK) A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the …
Year: 2015, 2015
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Baya, Pascale Anabelle, Thesis advisor (ths): Hintelmann, Holger, Degree committee member (dgc): Lamborg, Carl, Degree committee member (dgc): Hickie, Brendan, Degree committee member (dgc): Georg, Bastian, Degree granting institution (dgg): Trent University Abstract: <p>Monomethylmercury (MMHg), the most bioavailable form of mercury (Hg) and a potent neurotoxin, is present at elevated concentrations in Arctic marine mammals posing serious health threats to the local populations relying on marine food for their subsistence living. The sources of MMHg in the Arctic Ocean surface water and the role of dimethylmercury (DMHg) as a source of MMHg remain… more Full Text: INVESTIGATING THE SOURCES AND FATE OF MONOMETHYLMERCURY AND DIMETHYLMERCURY IN THE ARCTIC MARINE BOUNDARY LAYER AND WATERS A Dissertation Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Doctor of …
Year: 2015, 2015
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Celsie, Alena Kathryn Davidson, Thesis advisor (ths): Mackay, Donald, Thesis advisor (ths): Parnis, Mark, Degree committee member (dgc): Hickie, Brendan, Degree committee member (dgc): Mackay, Donald, Degree committee member (dgc): Parnis, Mark, Degree committee member (dgc): Aherne, Julian, Degree granting institution (dgg): Trent University Abstract: <p>Models of partitioning, uptake, and toxicity of neutral organic chemicals in fish</p><p>Alena Kathryn Davidson Celsie</p><p>A novel dynamic fugacity model is developed that simulates the uptake of chemicals in fish by respiration as applies in aquatic toxicity tests. A physiologically based toxicokinetic model was developed which calculates the time-course of… more Full Text: Models of partitioning, uptake, and toxicity of neutral organic chemicals in fish 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 Science …
Year: 2015, 2015
Member of: Trent University Graduate Thesis Collection
Abstract: <p>While there is an emerging body of literature on the role and effectiveness of community-based research (CBR) in addressing the needs of local communities, few studies have explored its promise in areas lacking established collaborative models. The purpose of this paper is to examine the potential of CBR to meet the sustainable community development needs of the primarily urban Durham… more Full Text: A SUSTAINABLE DEVELOPMENT: THE CASE FOR COMMUNITY-BASED RESEARCH IN THE DURHAM REGION A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Arts in the Faculty of Arts and …
Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>This thesis was designed to quantify absorbance and fluorescence characteristics of dissolved organic matter (DOM) in North Atlantic, Pacific and Arctic Oceans. DOM was described in water masses of distinct sources and formation pathways as well as in regions where environmental forcings such as deep water upwelling, enhanced biological activity and receipt of freshwater discharge were… more Full Text: Absorbance and Fluorescence Characteristics of Dissolved Organic Matter in North Atlantic, Pacific and Arctic Oceans A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Degree of Master of Science in the Faculty of Arts …
Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Silver nanoparticles (AgNP) released into aquatic environments could threaten natural bacterial communities and ecosystem services they provide. We examined natural lake bacterioplankton communities' responses to different exposures (pulse vs chronic) and types (citrate and PVP) of AgNPs at realistic environmental conditions using a mesocosm study at the Experimental Lakes Area. An… more Full Text: Effects of Silver Nanoparticles on Lake Bacterioplankton 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 Science TRENT UNIVERSITY …
