High Resolution Spatial Variability In Spring Snowmelt For An Arctic Shrub-Tundra Watershed, Branden J. Walker, Philip Marsh Dr

Theses and Dissertations (Comprehensive)

Arctic tundra environments are characterized by spatially heterogeneous end-of-winter snow cover because of high winds that erode, transport and deposit snow over the winter. This spatially variable end-of-winter snow cover subsequently influences the spatial and temporal variability of snowmelt and results in a patchy snowcover over the melt period. Documenting changes in both snow cover area (SCA) and snow water equivalent (SWE) during the spring melt is essential for understanding hydrological systems, but the lack of high-resolution SCA and SWE datasets that accurately capture micro-scale changes are not commonly available, and do not exist for the Canadian Arctic. This study …

The Geography Of Crime: Placing Geographers In The Space Of Criminologists, Anthony Wv Piscitelli

Theses and Dissertations (Comprehensive)

The Geography of Crime consists of five articles. The first article, Exploring opportunities for geographers to explain the spatial distribution of crime, serves as a key conceptual link between each of the other four articles. This paper provides a broad introduction to the dissertation showing what gaps in the crime literature exist, especially those ripe for analysis by geographers. Three primary directions emerged as a focus of this dissertation: overarching theoretical contributions, specialized geographic quantitative techniques, and qualitative approaches centred on the concept of place.

The second article, Connecting social disorganization theory to broken windows and routine activities proposes …

Toward Using High-Frequency Coastal Radars For Calibration Of S-Ais Based Ocean Vessel Tracking Models, Ben Freidrich

Theses and Dissertations (Comprehensive)

Most of the world relies on ships for transportation, shipping, and tourism. Automatic Identification System messages are transmitted from ships and provide a wealth of positional data on these open ocean vessels. This data is being utilized to determine the optimal path for ships, as well as predicting where a ship may be going in the near future. It has only been in the past decade that Automatic Identification Systems (AIS) signals have been easily received with satellites (S-AIS) so there have been few studies that look at using available information and pairing it with the new abundance of ship …

Using Paleolimnology To Establish Baseline Conditions For Metal Contaminants In Advance Of Proposed Mining To Inform A Northern Community-Led Aquatic Monitoring Program, Tłı̨Chǫ Lands, Northwest Territories, Canada., James Telford

Theses and Dissertations (Comprehensive)

The Marian Watershed Stewardship Program (MWSP), a community-driven aquatic ecosystem monitoring program, was developed by the Tłı̨chǫ Government to address concerns regarding the cumulative impacts of multiple potential stressors. In particular, the MWSP aims to develop methods that will be effective for detecting potential pollution from the proposed cobalt-gold-copper-bismuth NICO mine within Tłı̨chǫ Lands. In collaboration with the MWSP, paleolimnological methods and geochemical normalization are used to establish pre-mine baselines of lake sediment metals concentrations in the Marian River watershed prior to mine development. This baseline framework can be used to assess for pollution from surficial sediment once the mine …

Spatial Big Data Analytics: The New Boundaries Of Retail Location Decision-Making, Joseph M. Aversa

Theses and Dissertations (Comprehensive)

This dissertation examines the current state and evolution of retail location decision-making (RLDM) in Canada. The major objectives are: (i) To explore the type and scale of location decisions that retail firms are currently undertaking; (ii) To identify the availability and use of technology and Spatial Big Data (SBD) within the decision-making process; (iii) To identify the awareness, availability, use, adoption and development of SBD; and, (iv) To assess the implications of SBD in RLDM. These objectives were investigated by using a three stage multi-method research process. First, an online survey of retail location decision makers across a range of …

Understanding Motor Vehicle-Based Travel: Examining The Experiences Of Yukon Tourists, Natalia Wegrzyn

Theses and Dissertations (Comprehensive)

In the past several decades, scholarly research has simultaneously expanded in three research areas: northern tourism, drive tourism and the tourist experience. This study used an exploratory approach to understand the relationship between those three areas through a case study of the Yukon. Lead by four guiding questions 1) what are motor vehicle-based tourists’ expectations of Yukon? 2) how do Yukon tourists’ expectations influence their motor vehicle travel? 3) how does the motor vehicle influence tourists’ experience in the Yukon? and 4) how is Yukon reflected in the narratives of motor vehicle-based tourists? a mixed methods approach was used to …

Biogeochemical And Hydrological Impacts Of A Low-Severity Wildfire In The Wetland-Dominated Zone Of Discontinuous Permafrost, Caren J. Ackley

Theses and Dissertations (Comprehensive)

Northern regions are experiencing rapid climate warming. As these regions warm, the occurrences of naturally ignited wildfires are increasing in frequency, severity and area burned, calling for a more thorough understanding of post-fire eco-hydrological impacts. Changes in runoff chemistry, and soil moisture and thermal regimes, have been attributed to the significant loss of organic matter (OM) and exposure of deeper soils, leading to enhanced permafrost degradation, ground surface subsidence and the conversion of peat landscapes from long-term C sinks to sources. However, low-severity wildfires often result in minor OM loss. Due to the significant and immediate threats posed to the …

Border Disorder: 'Irregular Bangladeshis', Xenophobia And Crimmigration Control In India, Sujata Ramachandran

Theses and Dissertations (Comprehensive)

In India, the crisis of migration tied to the entry, presence and assimilation of the so-called ‘irregular’, ‘illegal Bangladeshi migrants’ is now an undisputed reality, seemingly affecting all geographical areas located within the national territories in multiple adverse ways. A decidedly strident xenophobic rhetoric attaches the presence of such migrants in an indiscriminate fashion to unending anxieties and urgent problems, whilst constantly drawing attention to the inefficacies of immigration enforcement and deficiencies of (interior and exterior) borders controls. This dissertation addresses key moments in the making and deepening of this national crisis and its management by state authorities over the …

Expression Of Alternative Oxidase In The Copepod T. Californicus When Exposed To Environmental Stressors, Carly Tward

Theses and Dissertations (Comprehensive)

In addition to the typical electron transport system in animal mitochondria responsible for oxidative phosphorylation, some species possess an alternative oxidase (AOX) pathway, which causes electrons to bypass proton pumping complexes. Although AOX appears to be energetically wasteful, studies have revealed its wide taxonomic distribution, and indicate it plays a role in environmental stress tolerance. AOX discovery in animals is recent, and further research into its expression, regulation, and physiological role has been impeded by the lack of an experimental model organism. DNA database searches using bioinformatics revealed an AOX sequence present in the arthropod Tigriopus californicus. Multiple sequence …

Policy, Plans And Processes For Developing And Improving The Use Of Hazard Maps In Climate Change Adaptation For Yukon Communities, Stephanie Pike

Theses and Dissertations (Comprehensive)

Climate change has quickly become one of the most commonly discussed topics in northern Canada. Communities located in Canada’s north are facing impacts to every aspect of life. Hazard mapping is one of the tools used to predict risk from climate change impacts and thus assist communities in adaptation planning. The Northern Climate ExChange in Yukon has developed hazard maps for seven communities across Yukon. While hazard maps are a useful tool, in order for them to reach their maximum potential, users need to be well educated and trained to use them. Capacity and communication are arguably the most significant …

Use Of Pre-Industrial Baselines To Assess Sources And Pathways Of Metals In Surface Sediment Of Floodplain Lakes In The Peace-Athabasca Delta (Alberta, Canada), Tanner Owca

Theses and Dissertations (Comprehensive)

The effects of natural resources exploitation in northern Canada on downstream aquatic ecosystems is a concern. Assessing these effects requires comprehensive monitoring practices to better inform stakeholders and environmental stewardship decisions. Here, a monitoring approach is developed and applied to assess metals concentrations in lake surface sediments of the Peace-Athabasca Delta (PAD), northern Alberta, Canada. Since the ecological integrity of the PAD is strongly tied to river floodwaters that are critical for replenishing the delta, and the PAD is located downstream of the Alberta oil sands, concerns have been raised over the potential transport of metal contaminants to the PAD …

Development And Application Of Hydrological And Limnological Monitoring In Lake-Rich Landscapes Of Canada’S Subarctic National Parks, Hilary Emma White

Theses and Dissertations (Comprehensive)

Arctic and subarctic environments are being adversely influenced by human-caused climate change across our entire planet. Canada’s northern freshwater ecosystems are influenced by a variety of environmental stressors and are particularly sensitive to climate change, since small shifts in climate have the potential to substantially alter their hydrological, limnological, and biogeochemical conditions. Some other indirect effects on northern freshwater landscapes are the expansion of vegetation as well as changes in wildlife and waterfowl populations and distribution. It is, therefore, critical to understand the observed and predicted influences of climate change and other environmental stressors on these northern freshwater environments dominant …

The Social Construction Of A Disaster Typology To Enhance Operational Emergency Planning For K-8 Public Schools In Southern Ontario, Patricia Martel

Theses and Dissertations (Comprehensive)

This dissertation outlines the development of a disaster typology that could be used as a tool for developing operational emergency plans for K-8 public schools with the potential to be applied more generally to other facilities that host vulnerable groups. The theoretical framework used to inform this study is the theory of the social construction of disasters. This theory conceptualizes disasters as being the result of the interaction between social factors, such as risk perception and vulnerability, and the hazards.The author of this dissertation is an emergency management practitioner and brought a perspective informed by both theory and practice of …

Connectedness To Nature And Pro-Environmental Behaviour From Early Adolescence To Adulthood: A Comparison Of Urban And Rural Canada, Daniel Anderson

Theses and Dissertations (Comprehensive)

Previous research has demonstrated that emotional connectedness to nature (ECN) is one of the strongest predictors of pro-environmental behaviour (PEB). This study investigated the influence of age, gender and living context on ECN and PEB in two Canadian samples.

Study participants completed an environmental survey, which assessed demographic data as well as their levels of ECN and PEB. Project I, which contained 1251 participants, investigated what group factors (age, urban vs. rural living context, male vs. female) contributed to ECN and PEB, as well as whether ECN mediated the relationship between age and PEB. Project II, which contained 84 adolescents, …

The Legitimation & Networked Unification Of #Nodapl: Diverse Discourses Of Value Validate A Collective Identity, Jacqueline Marie Ouellette

Theses and Dissertations (Comprehensive)

NoDAPL was, first and foremost, an Indigenous-led resistance against the construction of a pipeline in North Dakota. It was also a movement that built solidarity, bridging networks between international Indigenous peoples, Black Lives Matter activists, veterans, and feminists. This discourse analysis of social media and digital texts addresses the networked publics, collective identities, social capital, and intersectionality in applying Van Leeuwen’s (2007) understanding of legitimation. In doing so, the practice of reproducing and extending the values, themes, and images of various algorithmic imaginaries will be explored, as they relate to network homophily, identity construction, and mobilization. This study will argue …

Does Perceived Ecological Integrity Affect Restorative Health Outcomes? An Examination Of Visitor Experiences In Diverse Environments In An Ontario Protected Area, Catherine E. Reining

Theses and Dissertations (Comprehensive)

The human health and well-being benefits associated with nature contact is well established. Parks and other forms of protected areas contribute significantly to these benefits by providing access to nature. However, limited research has been done on how different environments within protected areas (e.g., forests, coasts, areas being restored) and the perceived quality (i.e., ecological integrity) of these environments affect the health and well-being outcomes of visitors. This study builds on previous work to better understand how visitor experiences provided by diverse natural and built environments in Pinery Provincial Park affect perceived restorative outcomes as one aspect of health and …

Maple Syrup And Climate Change In Ontario: Assessing Transdisciplinary Research Across Multiple, Related Projects, Kendra Serbinski

Theses and Dissertations (Comprehensive)

The aim of this research was to critically evaluate the transdisciplinary process being utilized on the SSHRC and related research projects being led by Dr. Brenda Murphy. The approach was two-fold: first, a document analysis was performed using secondary data, and second, a questionnaire was conducted based on six themes that emerged from the literature. These themes were: Degree of Collaboration, The Value of Working Together over Time, Mutual Learning, Integration of Team Members, Complexity of the Problem Being Investigated and Bridging the Research-Societal Gap. Based on findings in the literature and responses to the questionnaire the themes were assessed …

Growth Dynamics Of Black Spruce (Picea Mariana) Across Northwestern North America, Anastasia E. Sniderhan

Theses and Dissertations (Comprehensive)

The impacts of climate change have been widely documented around the world. One of the most rapidly changing areas is the boreal forest of North America. The extent of change has been such that there have been shifts in long-standing climate-growth relationships in many boreal tree species; while the growth of many of these high-latitude forests were formerly limited by temperature, warming has increased the evapotranspirative demands such that there is widespread drought stress limiting productivity in the boreal forest. With the importance of the boreal forest as a global carbon sink, it is imperative to understand the extent of …

Permafrost Thaw-Induced Forest To Wetland Conversion: Potential Impacts On Snowmelt And Basin Runoff In Northwestern Canada, Emily Haughton

Theses and Dissertations (Comprehensive)

In the discontinuous permafrost zone of northwestern Canada, snow covers the ground surface for over half the year, thus snowmelt constitutes a primary source of ecosystem moisture supply and strongly influences stream hydrographs. The peat landscapes along the southern limit of discontinuous permafrost are dominated by forested permafrost plateaus (“forest”), and treeless, permafrost-free wetlands (“wetland”). Permafrost-thaw induced transformation of this landscape has changed water flow and storage processes and therefore introduced new uncertainties on the region’s water futures. Here, I a) characterize forest and wetland water storage and flow from snowmelt, and b) evaluate how permafrost thaw-induced wetland expansion at …

Situating Community Resilience Within The Political Landscape: An Investigation Of Rural Livelihoods And Agency In Chile's Bíobío And Araucanía Regions, Julia Ercolani

Theses and Dissertations (Comprehensive)

Since the establishment of Pinochet’s dictatorship and its neoliberal experiment in 1973, Chile has experienced unprecedented growth in an increasingly resource-extractive economy, often through the expropriation and exploitation of the traditional territories of peasant farmers and the Indigenous Mapuche people. Through a lens of resilience, this study explores how the political and economic landscape of the country shapes rural livelihoods in six communities across two regions, as well as its implications for resilience at the community level. At the same time, it seeks to uncover how rural peoples actively respond to these threats and foster resilience within their households and …

Spatial And Temporal Variability Of The Snow Environment In The Western Canadian Arctic, Philip Mann

Theses and Dissertations (Comprehensive)

Snow cover in the Western Canadian Arctic is a significant input to the hydrological mass balance, it produces shelter and habitat for animals and humans, and supports interactions with vegetation and climate. The Arctic-tundra snow cover is greatly impacted by wind erosion, redistribution and deposition of snow during high wind events over the winter months. As a result, the end of winter snow cover is characterised by significant small-scale (on the order of a few meters) spatial variations in snow cover depth, density, and thus snow water equivalent (SWE), and runoff. Future climate related changes to snow cover depth and …

The Role Of Channel Fens In Permafrost Degradation Induced Changes In Peatland Discharge At Scotty Creek, Nt, Lindsay Elena Stone

Theses and Dissertations (Comprehensive)

Permafrost degradation in the peat-rich southern fringe of the discontinuous permafrost zone is producing substantial changes to land cover with concomitant expansion of permafrost-free wetlands (bogs and fens) and shrinkage of forest supported by permafrost peat plateaus. Predicting discharge from headwater basins in this region depends on understanding and numerically representing the interactions between storage and discharge within and between the major land cover types, and how these interactions are changing. To better understand the implications of land cover change on wetland discharge, the hydrological behaviour of a channel fen in the headwaters of Scotty Creek, Northwest Territories, Canada, dominated …

Landscape Scale Spectral-Temporal Modelling Of Bamboo-Dominated Forest Succession Within The Atlantic Forest Of Southern Brazil, Clara Greig

Theses and Dissertations (Comprehensive)

Tropical and subtropical ecosystems have become vulnerable to biological invasion (i.e., bamboo) due to human induced forest fragmentation. Bamboo ecological processes have been found to impede forest development, resulting in a state of arrested succession, which has been found to significantly reduce biodiversity, thus contributing to biotic homogenization. In this study we use a semi-empirical approach to develop a community-level spatially explicit ecological process model (hybrid model) using a time-series of Landsat imagery to describe single-landscape scale ecological processes of a pervasive bamboo species (Merostachys skvortzovii) found throughout the Araucaria forest, a critically threatened subtype of Atlantic forest …

Capitals, Climate Change And Food Security: Building Sustainable Food Systems In Northern Canadian Indigenous Communities, Andrew Spring

Theses and Dissertations (Comprehensive)

For many Indigenous communities in Canada’s northern boreal forest, the impacts of climate change are directly affecting their ability to access the land they rely on for traditional foods to support their food systems and livelihoods. However, climate change is merely one stressor for communities that have undergone dramatic social, cultural and political changes during the past decades. This research examines case studies in the communities of Délı̨nę and Kakisa, Northwest Territories (NWT), and identifies community-based solutions to build more sustainable food systems with a focus on food security and climate change. Using participatory action research methods to ensure the …

Factors Limiting Sand Dune Restoration In Northwest Beach, Point Pelee National Park, Canada, Pritichhanda Nayak, Pritichhanda Mohanty Nayak

Theses and Dissertations (Comprehensive)

Known as home to rare species of flora and fauna, and their critical habitats, Northwest beach of Point Pelee National Park has undergone significant ecological and infrastructural changes in the past decades. A number of important management challenges have emerged, including conservation of endangered Five-lined Skink (Plestiodon fasciatus) which inhabit the extensive dune system within the park. This research investigates key factors for sand dune ecosystem restoration in Northwest beach of Point Pelee with particular attention to the conservation of Skink habitat. Random stratified sampling method was used to collect sand and vegetation samples from the disturbed and …

Spatial Modelling And Wildlife Health Surveillance: A Case Study Of White Nose Syndrome In Ontario, Lauren Yee

Theses and Dissertations (Comprehensive)

Wildlife data is often limited by survey effort, small sample sizes, and spatial biases associated with collection and missing data. These factors can create unique challenges from a surveillance perspective when trying to extract spatial patterns of habitat suitability and disease distributions for conservation and management purposes. This thesis examined data quality from a wildlife health database in the context of spatial analysis of wildlife disease. Spatial analysis of the data to predict habitat suitability of bats and white nose syndrome afflicted bats was examined by using the MaxEnt modelling method. Methods to reduce spatial bias were examined and specific …

The Effects Of Fire On Snow Accumulation, Snowmelt And Ground Thaw On A Peat Plateau In Subarctic Canada, Elyse Mathieu

Theses and Dissertations (Comprehensive)

During the past century, the highest rates of warming have occurred at latitudes above 60^oN, where air temperatures have risen at twice the rate of other regions. In northwestern Canada, this warming has coincided with an increase in the frequency, size and severity of wildfires. The influence of such fires on the trajectory of on-going permafrost thaw is not well understood. As a consequence, the combined impacts of climate warming induced permafrost thaw and possible feedbacks arising from wildfires cannot be properly assessed. This study examines the impact of a 2.7 ha low-severity wildfire (July 2014) on water …

“Inconvenient Neighbours, Whom It Was Desirable Ultimately Wholly To Remove”: Differing Factors In The Dispossessions Of Studied Anishinaabe Groups Of The Great Lakes Basin, 1820-1865, Heather J. Sanguins

Theses and Dissertations (Comprehensive)

Despite being located within a relatively close geographic area, the Anishinaabeg of the eastern Great Lakes basin had different experiences of, and responses to, attempted and actual dispossession between 1820 and 1865. This research explores these experiences and the exercise of colonial power through the dispossession of six groups: the Lake Erie Anishinaabeg, the Walpole Anishinaabeg, the “American” Anishinaabeg who migrated into Upper Canada and Canada West, the Chippewa of Lakes Huron, Couchiching, and Simcoe, the Potaganasee Ojibwa of Drummond Island, and the Manitoulin Anishinaabeg. While eight themes weave their way through the cases, every case of attempted or actual …

Arriving Somewhere, Not Here: Exploring And Mapping The Relationship Between Border Enforcement And Migration By Boat In The Central Mediterranean Sea, 2006 To 2015, Kira Williams

Theses and Dissertations (Comprehensive)

The European Union (EU) implemented a maritime interdiction network using search and rescue which interdicted at least 462,813 “illegal migrants” in the Central Mediterranean Sea between 2006 and 2015. This involved 15 discrete, militarised and semi-secret maritime interdiction operations (MIOs) at a minimum cost of 126.9 million 2014 Euros. In this dissertation, I will explore and map these operations and their geographies between 2006 and 2015.

First, and based on the given existence of the European Patrols Network, I examine how this network came into being in the first place. This serves to show that the EU purposely created regular …

Assessing Resilient Post-Disaster Recovery Of A Flash-Flood-Prone Area: A Study Of The City Of Jeddah, Kingdom Of Saudi Arabia, Abdurazag Tammar

Theses and Dissertations (Comprehensive)

Abstract

The increased incidence of natural disasters over recent decades has been accompanied by a corresponding dramatic proliferation of human casualties, economic damage and recovery costs. Post-disaster processes are therefore increasingly becoming the paramount focus of disaster-management stakeholders. Current research has noted the importance of improving community resilience with respect to household capacity, organizational capacity, and social capital, as the three main assessment dimensions to enable communities to recover effectively and efficiently from future disaster events. Community resilience involves proactive preparedness and mitigation initiatives. In the context of the Kingdom of Saudi Arabia, the lack of either precedent research or …