English
Beyond Habitat: Individual and Population-Level Drivers of Coyote Space Use
My objective was to understand how individual variation, in conjunction with variation in habitat, can affect individual and population-level variation in animal space use. I used coyotes (Canis latrans) as a model species to investigate the roles of hybridization, an inherited intrinsic factor, and spatial memory, a learned intrinsic factor, on space use. I used a diversity of methods and approaches, including meta-regression, multiple imputation, simulations, resource selection functions, step selection functions, net-squared displacement analysis, and survival analysis. A major contribution was my investigation of the performance of multiple imputation in a meta-regression framework in Chapter 2. My simulations indicated that multiple imputation performs well in estimating missing data within a meta-regression framework in most situations. In Chapter 3, I used published studies of coyote home range size in a meta-regression analysis with multiple imputation to examine the relative roles of hybridization and environmental variables on coyote home range size across North America. I found that hybridization with Canis species was a leading factor driving variation in coyote space use at a continental scale. In Chapter 4, I used telemetry data for 62 coyotes in Newfoundland, Canada, to investigate the influence of cognitive maps on resource use. I found that resident coyotes used spatial memory of the landscape to select or avoid resources at spatial scales beyond their immediate sensory perception relative to transient coyotes, presumably increasing their fitness. Taken together, my dissertation demonstrates that intrinsic factors, such as genetic ancestry and spatial memory, can have substantial influences on how animals use space at both individual and population levels, and at both a local and a continental scales.
Author Keywords: canis latrans, hybridization, meta-regression, multiple imputation, Newfoundland, spatial memory
Lithic Raw Material Characterization and Technological Organization of a Late Archaic Assemblage from Jacob Island, Kawartha Lakes, Ontario
The objective of this thesis is to document and characterize the raw material and technological organization of a Late Archaic assemblage from Jacob Island, 1B/1C area (collectively referred to as BcGo-17), Peterborough County, Kawartha Lakes, Ontario. The purpose of this research is to gain a greater understanding of the Late Archaic period in central Ontario; particularly information on locally available raw material types (i.e., Trent Valley cherts) and regional interaction. My aim is to define the range of materials exploited for stone tool production and use, and to explore how variation in material relates to variation in economic strategies; I also complete a basic technological study. The collected data is then compared to temporally and geographically similar sites, and used to interpret possible relationships between acquisition practices, technology choices, and mobility. It was found that although the assemblage agrees with some of the mobility and raw material utilization models from south-western Ontario, many do not explain what was occurring on Jacob Island.
Author Keywords: Archaic, Lithic Economic Strategies, Lithic Raw Material, Lithic Technology, Ontario Archaeology, Trent Valley
Factors Influencing the Prioritization of Sites for Conservation on Private Land in Southern Ontario: A Case Study of the Nature Conservancy of Canada
Conservation organizations use strategic prioritization methods to order complex environments, evaluate landscapes, and distribute efficiently resources for conservation. This study explores how strategic prioritization decisions are made, drawing on a case study of the Nature Conservancy of Canada (NCC). This thesis identifies the factors affecting prioritization and their influence on the public perception of the NCC. The case study revealed that the NCC utilizes comprehensive science-based methods when prioritizing for conservation but its methods are also influenced by the 'opportunity function' (funding, threats, public/political support). How these factors are communicated depends on the audience (e.g. NCC Conservation Blueprints stress the scientific value of the environment; the NCC uses its media sources to emphasize the human-environment connection). These differences indicate the multi-dimensional nature of planning for conservation, its links to values emerging from science, politics, and society, and the need for collaborative conservation efforts and earning and maintaining public trust.
Author Keywords: biodiversity conservation priorities, collaboration, Nature Conservancy of Canada, opportunity function, private conservation organizations, science-based conservation
Environmental Health Management Practices in Indigenous Communities: A Case Study with Mississauga First Nation
Environmental factors play a critical role in the health and well-being of people worldwide and the distribution of the burden of disease associated with environmental causes is disproportionately high in marginalized populations, including First Nations. In this way, environmental health problems are as much social and political problems as environmental and must be addressed as such. In Canada, the division of responsibilities for environmental health, in combination with the jurisdictional complexities of health and environment regulation and service provision on-reserve creates a First Nations environmental health management system with significant gaps. This research set out to explore the question: What are the current strengths and challenges in First Nations environmental health policy and management? A qualitative exploratory design organized in two stages and employing key informant interviews, document review and a community case study was used to examine this topic. In the first stage a review of existing programs and policies applicable to Ontario First Nations and a series of interviews with key experts on the topic in the province were conducted. A conceptual framework of the core elements affecting environmental health management in First Nations communities was developed and then applied to a case study with Mississauga First Nation in Northern Ontario. The framework included five core elements: Environmental Health Jurisdiction and Responsibility; Participation in Environmental Health Decision-Making; Access to Environmental Health Resources, Communication of Environmental Health Information; and, Role and Influence of Leadership. The findings indicate that "internal" issues, like community-based decision-making and support for environmental health initiatives seem to be least affected by the "external" issues such as access to federal funding. The "internal" issues were also shown to be critically important factors having impacts on environmental health management practices and policies in Mississauga First Nation. While there are countless barriers associated with the "external" factors that have significant impacts on environmental health management practices and policies, this research suggest that the "internal" factors can potentially be the most important factors in creating positive change in this area and as a result warrant further study in order to improve the state of environmental health issues in First Nations.
Author Keywords: Community, Environmental Health, First Nations, Framework, Policy
Controlling the Feminine Body in Public: An Examination of Didactic Literature from the Reign of Charles VI of France, and its Focus on Movement
Within this project, I have identified a new pattern of instruction, surrounding women's bodies and their movement within the public space, present within didactic literature produced during the reign of Charles VI of France (1368-1422). This pattern, present in the texts Le livre du Chevalier de la Tour Landry pour l'instruction de ses filles, Le Menagier de Paris, Le livre des trois vertus and Mirroir des dames, sought to shame control women's physical presentation in public through use of imagery, stories and fear of pride. Using modern gendered body theory presented by Luce Irigaray and Judith Butler to examine the rise of this pattern, this project then concludes it represents an attempt of the social authority to present a passive feminine body in the public space in order to display male power during a time of social instability.
Author Keywords: body history, didactic literature, medieval education, medieval France, women, women's bodies
The effects of Dissolved Organic Matter (DOM) sources on Pb2+, Zn2+ and Cd2+ binding
Metal binding to dissolved organic matter (DOM) determines metal speciation and strongly influences potential toxicity. The understanding of this process, however, is challenged by DOM source variation, which is not always considered by most existing metal speciation models. Source determines the molecular structure of DOM, including metal binding functional groups. This study has experimentally showed that the allochthonous-dominant DOM (i.e. more aromatic and humic) consistently has higher level of Pb binding than the autochthonous-dominant DOM (i.e. more aliphatic and proteinaceous) by more than two orders of magnitude. This source-discrimination, however, is less noticeable for Zn and Cd, although variation still exceeds a factor of four for both metals. The results indicate that metal binding is source-dependent, but the dependency is metal-specific. Accordingly, metal speciation models, such as the Windermere Humic Aqueous Model (WHAM), needs to consider DOM source variations. The WHAM input of active fraction of DOM participating in metal binding (f) is sensitive to DOM source. The commonly-used f = 0.65 substantially overestimated the Pb and Zn binding to autochthonous-dominant DOM, indicating f needs to be adjusted specifically. The optimal f value (fopt) linearly correlates with optical indexes, showing a potential to estimate fopt using simple absorbance and/or fluorescence measurements. Other DOM properties not optically-characterized may be also important to determine fopt, such as thiol, which shows strong affinity to most toxic metals and whose concentrations are appreciably high in natural waters (< 0.1 to 400 nmol L-1). Other analytical techniques rather than Cathodic Stripping Voltammetry (CSV) are required to accurately quantify thiol concentration for DOM with concentration > 1 mg L-1. To better explain the DOM-source effects, the conditional affinity spectrum (CAS) was calculated using a Fully Optimized ContinUous Spectrum (FOCUS) method. This method not only provides satisfactory goodness-of-fit, but also unique CAS solution. The allochthonous-dominant DOM consistently shows higher Pb affinity than autochthonous-dominant DOM. This source-discrimination is not clearly observed for Zn and Cd. Neither the variability of affinity nor capacity can be fully explained by the variability of individual DOM properties, indicating multiple properties may involve simultaneously. Together, the results help improve WHAM prediction of metal speciation, and consequently, benefit geochemical modelling of metal speciation, such as Biotic Ligand Model for predicting metal toxicity.
Author Keywords: Dissolved organic matter, Metal binding, Source, Windermere Humic Aqueous Model
Nunavik Inuit Knowledge of Beluga: Using Multiple Methods, Tools, and Applications to Enhance our Understanding of Marine Mammal Ecology
Socio-ecological systems are inherently complex and marine mammals are fundamentally challenging to study. In the Arctic, marine mammals occupy a central ecological role, as nutrient cyclers and as a source of food and culture for Indigenous peoples. Inuit have developed a rich knowledge system, which has not been fully actualized in application in most Arctic research. Considering the need for the best available information in marine mammal ecology, the research question guiding this dissertation was: How can multiple methods and approaches be used to more effectively gather, understand, and represent Inuit Knowledge for an improved understanding of marine mammal ecology?
The dissertation investigates this question using a case study of beluga in Nunavik (Arctic Quebec) drawing on the expertise of hunters and Elders to better understand complex questions in marine mammal ecology. The thesis uses a transdisciplinary approach to address the dissertation objective and is comprised of a general introduction, followed by four chapters formatted as journal manuscripts, and closes with an integrated discussion and conclusion. The first manuscript examines the contributions of Traditional Ecological Knowledge (TEK) of beluga to marine mammal literature. The second manuscript uses a sub-set of data gathered through participant mapping to apply a mapping method to explore how the spatial aspects of TEK could be better documented, analyzed, and represented. The third and fourth papers are based on the knowledge shared by hunters and Elders. The third explores the questions 'why do beluga migrate?' and 'what factors influence beluga movement?'. The fourth investigates aspects of beluga foraging ecology.
This dissertation makes methodological contributions through the application of kernel density estimators to participant maps as a method for transforming multiple mapped narratives into a quantitative database. The understandings shared by hunters and Elders make significant ecological contributions, particularly to foraging (e.g. diet composition and seasonal energy intake), and movement ecology (e.g. potential drivers of migration). Broadly these findings contribute to our collective understanding of beluga ecology and have implications for wildlife management.
Author Keywords: Arctic, Beluga biology, foraging ecology, Inuit Knowledge, migration, transdisciplinary
Native Art as seen through Native Eyes: An examination of contemporary Native art From a Storytelling Perspective
Since the end of the Second World War, artists of Native descent have engaged with the Fine Art world where their work has come to be placed in the category of Native art. As a result of my journey, I have come to realize that in the Fine Art world the term Native art tends to be associated with the practices of our ancestors in times past obscuring our contemporary nature. In the present day context, however, I see an evolution and will tell the stories of the artists I met, who became a part of my life and thus a part of my narrative to point out that the voices of contemporary artists of Native descent, when speaking of their work, demonstrate a modern form of Native creativity, pride and joy that needs to be properly recognized. While Native artists do respect our traditions and do deal with issues of importance to our communities, they also create their artwork using sophisticated and modern techniques. It is up to us to make our contemporary nature known far and wide.
A storytelling approach based on the Michael Thrasher Medicine Wheel Teachings is employed to present the voices of our contemporary artists of Native descent who when speaking of their work create a rich and vibrant story of Native creativity, pride and joy.
Author Keywords: Culture, Elder, Indigenous Knowledge, Native Art, Storytelling
Correlating density of states features with localization strength in disordered interacting systems
Johri and Bhatt found singular behavior near the band edge in the density of states as well as in the inverse participation ratio of the Anderson model. These singularities mark a transition to an energy range dominated by resonant states. We study the interacting case using an ensemble of two-site Anderson-Hubbard systems. We find the ensemble-averaged density of states and generalized inverse participation ratio have more structure than in the non-interacting case because there are more transitions and in particular the transitions depend on the ground state. Nonetheless, there are regions of sharp decline in the generalized inverse participation ratio associated with specific density of state features. Moreover these features move closer to the Fermi level with the addition of interactions making them more experimentally accessible. Unfortunately resonances unique to interacting systems cannot be specifically identified.
Author Keywords: Correlated electrons, Disorder, Localization
Canid Predation of Domestic Sheep (Ovis aries) on Ontario Farms: Land Cover Associations and Disruptive Deterrent Testing
Livestock predation by wild predators is a frequent and complicated issue, often cited as a significant factor in the decline of livestock production and justification for killing predators. Coyotes (Canis latrans) are the primary predators of sheep in Ontario. Some farms appear to be more susceptible to predation than others, despite the use of mitigation techniques. I explored land cover in the vicinity of farms as a potential influence on the level of predation, as coyote abundance and wild prey are correlated with certain habitat types. Using model competition, I show that landscape explains little variation in predation levels over all farms, but can explain 27% of variation in the percent of a flock killed. Total forest edge habitat and distance between forest patches were both positively associated with losses, suggesting a reduction in forest cover surrounding a farm puts the flock at greater risk. In addition, I tested four disruptive deterrents for effectiveness at protecting flocks. A matched-pairs analysis did not show a statistically significant benefit of these non-lethal mitigation tools.
Author Keywords: Alternative Prey, Canis latrans, Coyote, Landscape, Predation Deterrents, Sheep