Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Abstract</p><p>Early Responses of Understory Vegetation After One Year of Above Canopy Nitrogen Additions in a Jack Pine Stand in Northern Alberta</p><p>Nicole Melong</p><p>Nitrogen (N) emissions are expected to increase in western Canada due to oil and gas extraction operations. An increase in N exposure could potentially impact the surrounding boreal… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Smith, Matthew, Thesis advisor (ths): Wallschlaeger, Dirk, Degree committee member (dgc): Dillon, Peter, Degree committee member (dgc): Belzile, Nelson, Degree committee member (dgc): Gueguen, Celine, Degree granting institution (dgg): Trent University Abstract: <p>Selenide is cited as a geochemically important selenium (Se) species, but it is unknown whether selenide is a stable aqueous ion in natural waters. The feasibility of using anoxic anion exchange chromatography (AEC) coupled to dynamic reaction cell-inductively coupled plasma-mass spectrometry to separate aqueous selenide was investigated with the goal of quantifying this anion to… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Experiments have observed a two-dimensional electron gas at the interface of two insulating oxides: strontium titanate (SrTiO<sub>3</sub>) and lanthanum aluminate (LaAlO<sub>3</sub>). These interfaces exhibit metallic, superconducting, and magnetic behaviours, which are strongly affected by impurities. Motivated by experiments, we introduce a simple model in which… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Ringrose, John Lyons, Thesis advisor (ths): Beresford, David, Thesis advisor (ths): Abraham, Ken, Degree committee member (dgc): Beresford, David, Degree committee member (dgc): Abraham, Ken, Degree committee member (dgc): Nol, Erica, Degree granting institution (dgg): Trent University Abstract: <p>I studied the abundance, distribution and diversity of horse fly and deer fly species (Diptera: Tabanidae) and mosquito species (Diptera: Culicidae) in the boreal forest region of northern Ontario in 2011 and 2012. I collected 19 mosquito species, including one species new for Ontario, Aedes pullatus (Coquillett). I documented 11 northern and one southern range extension. I also… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The distribution of animals is rarely random and is affected by various environmental factors. We examined space-use patterns, habitat selection and stress responses of whip-poor-wills to mining exploration activity.To the best of my knowledge, fine scale patterns such as the habitat composition within known home ranges or territories of eastern whip-poor-wills have not been investigated… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>ABSTRACT</p><p>The Propensity Toward Extremist Mind-Set as Predicted </p><p>by Personality, Motivation, and Self-Construal</p><p>Nick Fauset</p><p>Multivariate regression analyses were used to determine the effects of Personality (Neuroticism, Extraversion, Openness, Agreeableness, and Conscientiousness), Motivation (External, Amotivation,… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Dobosz, Rafal, Thesis advisor (ths): McConnell, Sabine, Thesis advisor (ths): Hurley, Richard, Degree committee member (dgc): McConnell, Sabine, Degree committee member (dgc): Hurley, Richard, Degree committee member (dgc): Hajibabaei, Mehrdad, Degree committee member (dgc): Cater, Bruce, Degree granting institution (dgg): Trent University Abstract: <p>As the generation of genetic data accelerates, Big Data has an increasing impact on the way bioinformatics software is used. The experiments become larger and more complex than originally envisioned by software designers. One way to deal with this problem is to use parallel computing.</p><p>Using the program Structure as a case study, we investigate ways in which to… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The fate of silver nanoparticles (AgNPs) in surface waters determines the ecological risk of this emerging contaminant. In this research, the fate of AgNPs in lake mesocosms was studied using both a continuous (i.e. drip) and one-time (i.e. plug) dosing regime. AgNPs were persistent in the tested lake environment as there was accumulation in the water column over time in drip mesocosms… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Recent declines in growth and condition of Great Lakes' lake whitefish (Coregonus clupeaformis) have been linked to ecosystem-wide changes stemming from the invasion of dreissenid mussels. To test the influence of invasive mussels on this commercially important coregonid species, we collected archived scale samples from ten Great Lake locations and analyzed long-term changes in… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Stormwater ponds (SWPs) are a common feature in new urban developments where they are designed to minimize runoff peaks from impervious surfaces and retain particulate matter. As a consequence, SWPs can be efficient at retaining particle-bound nutrients, but may be less efficient at retaining nutrients that are present primarily in the dissolved form, like nitrogen (N). However, the… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Nitrogen is a major constituent of agricultural fertilizers, and nitrogen inputs to stream water via runoff and groundwater lead to a variety of negative environmental impacts. In order to quantify the movement of nitrogen through aquatic food webs, fourteen streams with varying land uses across South-Central Ontario were sampled for two species of fish, freshwater mussels, and water for… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Selenium is an essential trace nutrient to many organisms, yet in high concentrations it is toxic. Organic selenium is more bioavailable to aquatic biota than inorganic selenium, but is usually found in much lower concentrations. Algae are known to biotransform inorganic selenium into several organo-selenium compounds, but it is unknown whether any of these bioaccumulate in the food… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The damage to Sudbury's landscape from over a century of smelter and logging activity has been severe and impacts well documented. However, despite their abundance in the region, wetlands have received little attention. Recent studies have identified that nutrient limitation is as much a problem as metal toxicity and highlighted not only the importance of wetlands but also the need… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): McInnes, Mark Andrew, Thesis advisor (ths): Ellis, David A, Degree committee member (dgc): Thompson, Matthew, Degree committee member (dgc): Gueguen, Celine, Degree committee member (dgc): Stock, Naomi, Degree granting institution (dgg): Trent University Abstract: <p>Perfluorinated carboxylic acids (PFCAs) are anthropogenic environmentally ubiquitous surfactants that tend to concentrate on water surfaces. This investigation looked at the effect of simulated rain on the atmospheric concentration of a suite of PFCAs (C2 - C12) above the bulk water system. Increased air concentrations of all PFCAs were detected during simulated rain events. Long chain… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>This thesis focuses on the design of a modelling framework consisting of loose-coupling of a sequence of spatial and process models and procedures necessary to predict future flood events for the years 2030 and 2050 in Tabasco Mexico. Temperature and precipitation data from the Hadley Centers Coupled Model (HadCM3), for those future years were downscaled using the Statistical Downscaling… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Lin, Shang-Yao Peter, Thesis advisor (ths): Dorken, Marcel E, Thesis advisor (ths): Nol, Erica, Degree committee member (dgc): Crins, William J, Degree committee member (dgc): Freeland, Joanna R, Degree granting institution (dgg): Trent University Abstract: <p>Sexual reproduction in flowering plants depends on investment in reproduction, the mode of pollen transfer, the availabilities of nutrient resources and potential mates, and the spatial scales over which these processes take place. In this thesis, I studied the general reproductive biology of Shepherdia canadensis (L.) Nutt. (Elaeagnaceae) and the suite of pollinators that visit the… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>I investigated the impact of beef-cattle farm management on the reproductive success of Bobolink (<italic>Dolichonyx oryzivorus</italic>) and Eastern Meadowlark (<italic>Sturnella magna</italic>) within Eastern Ontario. I monitored rotational grazing management regimes and hay cut dates while assessing breeding phenology and reproductive success of Bobolinks and… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The present study examined the role of multiple nights of sleep in the consolidation of a complex motor learning task. Participants were 24 Trent undergraduates, 12 in the learning group (Mage = 20.33, SD = 1.87, 10 female) and 12 in the control group (Mage = 21.92, SD = 3.42, 7 female). Participants underwent 5 consecutive nights of polysomnographic recordings, with a Rock Band learning… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Majchrzak, Yasmine Nicole, Thesis advisor (ths): Burness, Gary, Degree committee member (dgc): Mastromonaco, Gabriela, Degree committee member (dgc): Murray, Dennis, Degree committee member (dgc): Bowman, Jeff, Degree granting institution (dgg): Trent University Abstract: <p>Many facilities attempt to alleviate the risk of chronic stress in captivity by providing environmental enrichment shown to minimize behavioural disorders and stress in several species. One potential form of enrichment used in zoos is training animals to perform rides for guests, however, the effect of this activity on the welfare of individual animals has never been examined. I… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Using rodent models, it is possible to study the behavioural and physiological outcomes of early life stress and the influences on normal mammary gland development and carcinogenic risk. Results demonstrate that the experience of three weeks of prolonged maternal separation (LMS; 4 hrs/day) increased the susceptibility of adult, but not pubertal, female BALB/c mice to engage in higher… more
