Year: 2013, 2013
Member of: Trent University Graduate Thesis Collection
Abstract: <p>A novel passive sampler for mercury monitoring was prepared using organosilica sol-gel materials. It comprises a binding layer with thiol groups for mercury complexation and a porous diffusive layer through which mercury can diffuse and arrive at the binding layer. Our study demonstrated that this new sampler follows the principle of passive sampling. The mass of mercury accumulated in… more Full Text: NOVEL SILICA SOL-GEL PASSIVE SAMPLER FOR MERCURY MONITORING IN AQUEOUS SYSTEMS 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 …
Year: 2013, 2013
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Bedard, K. ottO, Thesis advisor (ths): McKenna-Neuman, Cheryl, Degree committee member (dgc): Cogley, Graham, Degree committee member (dgc): Ponce-Hernandez, Raul, Degree committee member (dgc): Pond, Bruce, Degree granting institution (dgg): Trent University Abstract: <p>A wind tunnel study was conducted to investigate aeolian impact ripples in sand beds of varied texture from coarsely skewed to bimodal. Experimental data is lacking for aeolian megaripples, particularly in considering the influence of wind speed on ripple morphometrics. Additionally, the modelling community requires experimental data for model validation and calibration.</p><p… more Full Text: Aeolian Impact Ripples in Sand Beds of Varied Texture 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 Peterborough, …
Year: 2013, 2013
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Consequences of habitat loss and fragmentation include smaller effective population sizes and decreased genetic diversity, factors that can undermine the long-term viability of large carnivores that were historically continuously distributed. I evaluated the historical and contemporary genetic structure and diversity of American black bears (<italic>Ursus americanus</italic… more Full Text: UNDERSTANDING HISTORICAL AND CONTEMPORARY GENE FLOW PATTERNS OF ONTARIO BLACK BEARS: TOWARDS REFINING MANAGEMENT STRATEGIES A dissertation submitted to the Committee on Graduate Studies in partial fulfillement of the requirements for the degree of Doctor …
Year: 2013, 2013
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Eastern wolves (Canis lycaon) have hybridized extensively with coyotes (C. latrans) and gray wolves (C. lupus) and are listed as a `species of special concern' in Canada. Previous studies have not linked genetic analysis with field data to investigate the mechanisms underlying Canis hybridization. Accordingly, I studied genetics, morphology, mortality, and behavior of wolves,… more Full Text: HYBRIDIZATION DYNAMICS BETWEEN WOLVES AND COYOTES IN CENTRAL ONTARIO A Dissertation Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in the Faculty of Arts and Science TRENT …
Year: 2013, 2013
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Silver nanoparticles (nAg) are the largest and fastest growing class of nanomaterials, and are a concern when released into aquatic environments even at low μg L<super>-1</super. levels. Measurement at environmental levels requires extremely sensitive instrumentation, therefore this research developed two passive samplers to track the the concentration of nAg and… more Full Text: The Development and Use of Passive Samplers for Monitoring Dissolved and Nanoparticulate Silver in the Aquatic Environment A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of …
Year: 2013, 2013
Member of: Trent University Graduate Thesis Collection
Abstract: <p>I implemented three hayfield management regimens in southern Ontario (a typical schedule at the farmer`s discretion, a delayed first harvest after July 14, and an early first harvest before June 1 with 65 days before second harvest), and evaluated the costs/benefits to farmers regarding hay quality and feasibility, and to Bobolinks (Dolichonyx oryzivorus) regarding reproductive activity… more Full Text: EVALUATION OF HAYFIELD MANAGEMENT STRATEGIES AND BOBOLINK TERRITORIAL HABITAT IN SOUTHERN ONTARIO 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 …
Year: 2013, 2013
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Changes in climate and land-use practices are leading to higher peak flows and increased transport capacity of channel substrate. Semi-alluvial streams underlain by bedrock or clay were examined to understand the potential impacts of alluvium loss on the biological community and overall productive capacity of semi-alluvial rivers. More specifically, this research investigates the… more Full Text: PRODUCTIVE CAPACITY OF SEMI-ALLUVIAL STREAMS IN ONTARIO: THE IMPORTANCE OF ALLUVIAL MATERIAL FOR FISH, BENTHIC INVERTEBRATES, PERIPHYTON AND ORGANIC MATTER A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements …
Year: 2013, 2013
Member of: Trent University Graduate Thesis Collection
Abstract: <p>My study was primarily focused on the comparison of life history traits between stocked American eel and their naturally recruited conspecifics in Lake Ontario and the upper St. Lawrence River (USLR/LO). I found that stocked eels experienced faster annual growth than their naturally recruited conspecifics and were comprised of a greater proportion of males. These findings indicate that… more Full Text: THE LIFE HISTORY STRATEGY, GROWTH, BODY CONDITION, AND DIET OF STOCKED AMERICAN EEL (Anguilla rostrata) IN THE UPPER ST. LAWRENCE RIVER AND LAKE ONTARIO TRENT UNIVERSITY Peterborough, Ontario, Canada © Copyright by Joshua Alexander Stacey 2013 …
Year: 2013, 2013
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Winter nutrient export from forested catchments is extremely variable from year-to-year and across the landscape of south-central Ontario. Understanding the controls on this variability is critical, as what happens during the winter sets up the timing and nature of the spring snowmelt, the major period of export for water and nutrients from seasonally snow-covered forests. Furthermore,… more Full Text: Hydroclimatic and spatial controls on stream nutrient export from forested catchments A Dissertation Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in the Faculty of Arts …
Year: 2013, 2013
Member of: Trent University Graduate Thesis Collection
Abstract: <p>I investigated biodiversity of birds and vegetation associations along the boreal-tundra ecotone in Ivvavik National Park, Yukon Territory, and breeding adaptations used by American Robins (Turdus migratorius) at high latitudes. Twenty bird species were detected over three years using point-count surveys. Densities of American Robin, Dark-eyed Juncos (Junco hyemalis), and Yellow-rumped… more Full Text: HABITAT SELECTION AND LIFE-HISTORY TRAITS OF BREEDING BIRDS IN THE BOREAL-TUNDRA ECOTONE, WITH SPECIAL ATTENTION TO THE AMERICAN ROBIN (TURDUS MIGRATORIUS) A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements …
Year: 2013, 2013
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The Serial Discontinuity Concept describes the downstream recovery of key biophysical variables below an impoundment. With the proliferation of hydropower dams to meet increasing societal demands, further refinement and understanding of the Serial Discontinuity Concept is needed to accurately predict downstream impacts and ensure the proper management of rivers. In this study, I examine… more Full Text: Longitudinal Trends of Benthic Invertebrates in Regulated Rivers: A Test of the Serial Discontinuity Concept A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science in the …
