Electronic Theses and Dissertations: Recent submissions
Now showing items 221-240 of 3543
-
The potential uses of virus-infected symbionts to improve drought and heat stress in trees for improvement, climate change resilience, and restoration
(2023)With the rapid changes occurring to the climate of the boreal forest, many populations of trees are facing increased stresses and seeing lower productivity and survival. Conventional tree improvement programs take decades ... -
Tracking stand-level responses (mortality and recovery) in jack pine (Pinus banksiana Lamb.)- dominated stands following the recent jack pine budworm (Choristoneura pinus pinus F.) infestation across northwestern Ontario
(2023)This study investigates the stand-level responses (mortality and recovery) in jack pine-dominated forests following a recent infestation of the jack pine budworm across northwestern Ontario. The aim is to understand the ... -
Evaluating the effects of biomass harvesting on soil nutrient availability, foliar nutrition, and seedling growth in third-growth black spruce plantations in northwestern Ontario
(2023)Residual forest biomass is a viable feedstock that can be used in the bioenergy stream. There remains, however, a concern that excessive removal of forest biomass may have negative impacts on forest biodiversity, ... -
Effects of the nitrogen deposition on the forest ecosystems: an overview
(2023)Human activities exacerbate the production and emission of reactive nitrogen and lead to the increase and globalization of nitrogen deposition. At present, the interference of human activities in the global nitrogen cycle ... -
Trends in breeding propensity of Common Loons (Gavia immer) in relation to lake water clarity in and around Algonquin Provincial Park
(2023)Productivity of Common Loons has been in decline across most of Canada for several decades. Many environmental factors and human impacts on the breeding grounds may be causing the decline, and these factors are known to ... -
Challenges with regenerating chipper debris pads: evaluating seedling performance nine years after planting
(2023)Debris from in-bush portable chain flail chippers can alter the abiotic environment factors within the mineral soil. Thus, chipper debris can create an unsuitable seedbed for seedling growth and survival. In this thesis, ... -
A review of silvics, stand dynamics, density management, and vegetation management in the Ontario boreal forest
(2023)Adaptive forest management requires constant re-evaluation of the efficacy and impact of current practices. Continuous development of information is key to any adaptive management regime, especially in the face of ... -
Evaluating the effects of clearcutting, wildfire, and bioenergy wood ash application on forest soils to improve emulation silviculture
(2023)Ontario’s forest management guides promote the use emulation silviculture to manage the province’s forests on a landscape scale based on natural disturbance regimes. While clearcut harvesting can have similar effects to ... -
Assessment of lake trout (Salvelinus namaycush) mercury concentration across a gradient of food web complexity and environmental variables
(2023)Exposure to mercury has been linked to health risks in both people and wildlife. In Ontario, mercury pollution is to blame for 85% of the consumption restrictions on fish from inland lakes. Heavy metals like mercury ... -
The effect of ectomycorrhizal fungus Hebeloma longicaudum on drought stress of Pinus banksiana seedlings
(2023)This study looks at the influence of the ectomycorrhizal fungus Hebeloma longicaudum to form associations and impact growth of jack pine seedlings under simulated drought conditions. Four treatment groups of jack pine ... -
Wildlife management on urban golf courses: the case of the Ottawa Hunt and Golf Club
(2023)Urban development has put increasing pressure on public greenspaces and the local wildlife populations encompassing them. Golf courses are an accessible way for the public to view the natural environment and wildlife ... -
Driver and landscape-related factors associated with reported wildlife-vehicle collisions in Thunder Bay, Ontario
(2022)The ever-expanding road network in Ontario has created serious implications for wildlife and their movement within the province. This has led to the discovery of many factors that have the potential to increase the risk ... -
An exploration of image recognition in archaeological starch analysis
(2023)The goal of this thesis was to produce a statistical method of assigning species to starch granules recovered from eastern North American archaeological assemblages. Starch grain analysis is an archaeobotanical tool that ... -
Geochemistry and mineralization of the Archean Titan (Roaring River) intrusion, Thunder Bay, Ontario
(2023)The 2690 ± 3.2 Ma Titan intrusion is an approximately 7 by 3 km, roughly ovoid, mafic-ultramafic intrusion, located just north of the inferred boundary between the Winnipeg River and Marmion terranes. Outcrop in the area ... -
Advanced deep regression models for smart operation of the oil and gas industry
(2023)The first industrial revolution in the early 18th century largely exploited steam power to replace animal labor. Since then, there has been rapid development in industrial operations. Now, the world has come to the brink ... -
Examining how early attachment contributes to later romantic relationship quality: the role of emotion regulation and conflict management strategies
(2023)Individuals with insecure styles of attachment often have difficulties with emotion regulation and conflict management and may utilize strategies to manage their emotions or navigate conflict that are maladaptive and ... -
Female care partners’ experiences of their relative's transition to nursing home: a critical feminist perspective
(2023)The decision to transition a relative to a nursing home is usually preceded by many months or years of physical and emotional care. While women continue to do most of the care work throughout their lives due to socially ... -
Malleable multiplication: the use of multiplication strategies and gamification to create conceptual understanding
(2023)I have always considered math to be both my friend and foe. The parts of math I enjoy are algebra, trigonometry, and multiplication. I could find solace in math that was formulaic and had clear instructions. At times ... -
2D geometric morphometrics of murine mandibular toothrows from Liang Bua (Flores, Indonesia): implications for taxonomic identification
(2022)This study uses—and evaluates the efficacy of—two-dimensional geometric morphometrics (2DGM) to quantitatively characterize the size and shape of murine rodent (i.e., rat) mandibular molar rows from the archaeological ... -
New insights into modern human behaviour at Liang Bua (Flores, Indonesia) based on the temporal distribution of pottery and mollusks during the past 5,000 Years
(2022)In addition to preserving a rich archaeological record spanning from ~190 thousand years ago (ka) until the terminal Pleistocene, Liang Bua (Flores, Indonesia) also preserves a rich and relatively complete Holocene ...