Year: 2017, 2017
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Tree harvesting alters nutrient cycling and removes nutrients held in biomass, and as a result nutrient availability may be reduced, particularly in naturally oligotrophic ecosystems. Selection harvesting is a silvicultural technique limited to tolerant hardwood forests where individual or small groups of trees are removed creating a "gap" in the forest canopy. In order for… more Full Text: The impact of selection harvesting on soil properties and understory vegetation in canopy gaps and skid roads in central Ontario A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of …
Year: 2017, 2017
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Timber harvest can influence the rate of transfer of organic matter from the terrestrial catchment to streams, which may have both direct and indirect effects on in-stream nutrient pools and dynamics. In the interest of developing sustainable forestry practices, the continued study of the effects of forestry on nutrient dynamics in aquatic systems is paramount, particularly in sensitive… more Full Text: The effects of in-stream woody debris from selective timber harvest on nutrient pools and dynamics within Precambrian Shield streams A Thesis submitted to the Committee of Graduate Studies in Partial Fulfillment of the Requirements for the Degree of …
Year: 2016, 2016
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Phosphorus (P) is an essential macronutrient. In south-central Ontario, foliar P concentrations are low and studies have suggested that P may be limiting forest productivity. Current catchment mass balance estimates however, indicate that P is being retained suggesting that P should not be limiting to tree growth. Phosphorus deposition is measured using bulk deposition collectors, which… more Full Text: Phosphorus deposition in forested watersheds: importance of pollen 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: 2015, 2015
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Soil mineralizable nitrogen (N) is the main component of soil N supply in humid temperate regions and should be considered in N fertilizer recommendations. The objectives of this study were to determine the potentially mineralizable N parameters, and improve N fertilizer recommendations by evaluating a suite of soil N tests in southwestern Ontario. The study was conducted over the 2013… more Full Text: Soil mineralizable nitrogen as an indicator of soil nitrogen supply for grain corn in southwestern Ontario A Thesis submitted to the Committee of Graduate Studies in Partial Fulfillment of the requirements for the Degree of Master of Science in the …
Year: 2015, 2015
Member of: Trent University Graduate Thesis Collection
Abstract: <p>Extensive research has gone into measuring changes to the carbon storage capacity of Arctic terrestrial environments as well as large water bodies in order to determine a carbon budget for many regions across the Arctic. Inland Arctic waters such as small lakes and ponds are often excluded from these carbon budgets, however a handful of studies have demonstrated that they can often be… more Full Text: CO2 dynamics of tundra ponds in the lowArctic, Northwest Territories, Canada 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: 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 Full Text: Seasonal variation in nutrient and particulate inputs and outputs at an urban stormwater pond in Peterborough, Ontario A Thesis Submitted to the Committee on Graduate Studies in Partial Fulfillment of the Requirements for the Degree of Master of Science …
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 Full Text: ADAPT: AN AUTOMATED DECISION SUPPORT TOOL FOR ADAPTATION TO CLIMATE CHANGE-DRIVEN FLOODS PREDICTED FROM A MULTISCALE AND MULTI-MODEL FRAMEWORK Predicting flood extents in Tabasco Mexico A Thesis Submitted to the Committee on Graduate Studies in Partial …
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 …
