Year: 2022, 2022
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Katanda, Yeukai, Thesis advisor (ths): Hutchinson, Tom, Thesis advisor (ths): Thompson, Karen, Degree committee member (dgc): Sharifi, Mehdi, Degree committee member (dgc): Van Eerd, Laura, Degree committee member (dgc): Hooker, David, Degree granting institution (dgg): Trent University Abstract: <p>Ontario grain corn is highly valuable, accounting for 60% of Canada's total corn output. Grain producers are increasingly interested in including cover crops (CCs) in their cropping systems, but they have concerns regarding successful CC establishment and potential adverse competitive effects on corn yield and nutrient status. One option to improve the success of CC establishment is… more Year: 2021, 2021
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): McDonough, Andrew Michael, Thesis advisor (ths): Watmough, Shaun A, Degree committee member (dgc): Aherne, Julian, Degree committee member (dgc): Hutchinson, Tom, Degree committee member (dgc): Sager, Eric, Degree granting institution (dgg): Trent University Abstract: <p>In this study we seek to better understand the potential effects of short-term (5-year) N fertilization on jack pine forest biogeochemistry, vascular plant community composition and to project a temporal endpoint of nitrogen leaching below the major rooting zone. Aqueous ammonium nitrate (NH4NO3) was applied above the forest canopy across five treatment plots (20 x 80 m) four times… more Year: 2020, 2020
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Janik, Gabrielle, Thesis advisor (ths): Ponce-Hernandez, Raul, Degree committee member (dgc): Hutchinson, Tom, Degree committee member (dgc): Beresford, David, Degree committee member (dgc): Thompson, Karen, Degree granting institution (dgg): Trent University Abstract: <p>This thesis uses three approaches to assess the potential of permaculture in Central Ontario. This was done using a vegetable field trial and modelling programs to determine the effectiveness of permaculture to decrease negative impacts of climate change based on projected climate values derived from regional circulation models. The first approach showed no statistical difference (P<0… more Year: 2019, 2019
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Soil is an essential natural resource that supports provisioning services such as agriculture, silviculture, and mining. However, there is limited knowledge on forest soil properties across Canada. Digital soil mapping may be used to fill these data gaps, as it can predict soil properties in areas with limited observations. The focus of this study was to develop predictive maps of select… more Year: 2018, 2018
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Samkari, Bshayer A, Thesis advisor (ths): Beresford, David, Degree committee member (dgc): Hutchinson, Tom, Degree committee member (dgc): Sager, Eric, Degree committee member (dgc): Davy, Christina, Degree granting institution (dgg): Trent University Abstract: <p>This thesis looks at the genus Pollenia: historically where they were first introduced into Canada and spatially, where they are found now. This project involved me identifying 2211 files, sorted from the 3 years of field specimens obtained in 2011, 2012, 2013. P. pediculata was the most abundant and widespread, yielding 1272 specimens out of 2211, and it was found in all provinces… more Year: 2017, 2017
Member of: Trent University Graduate Thesis Collection
Abstract: <p>This study was designed to determine the geochemistry and potential toxicity of water draining a large slag pile in Sudbury, Ontario, which runs through a pond complex prior to entering Alice Lake. Slag leaching experiments confirmed slag is a source of sulphate, heavy metals (including Fe, Al, Ni, Co, Cu, Zn, Pb, Cr, Mn) and base cations (Ca, K, Mg, Na). Concentrations of most metals… more Year: 2015, 2015
Member of: Trent University Graduate Thesis Collection
Abstract: <p>The reliability and performance of four passive sampler membrane coatings specific to nitrogen dioxide (NO2) were evaluated through co-exposure at multiple Ontario Ministry of Environment and Climate Change (OMOECC) active monitoring stations. All four coatings performed relatively similar under a wide range of meteorological conditions, notably showing exposure-specific atmospheric… more Year: 2014, 2014
Member of: Trent University Graduate Thesis Collection
Name(s): Creator (cre): Barrett, Sophie Elizabeth, Thesis advisor (ths): Watmough, Shaun, Degree committee member (dgc): Sager, Eric, Degree committee member (dgc): Emery, Neil, Degree committee member (dgc): Hutchinson, Tom, Degree granting institution (dgg): Trent University Abstract: <p>Peatlands are prevalent in the Sudbury, Ontario region. Compared with the well documented devastation to the terrestrial and aquatic ecosystems in this region, relatively little work has been conducted on the peatlands. The objective of this research was to assess factors controlling peat and plant chemistry, and vegetation composition in 18 peatlands in Sudbury after over 30 years of… more
