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Quantifying the impacts of environmental conditions on the abundance of wildlife populations is important for making informed management decisions in the face of increasing environmental threats. Managers require robust tools to estimate abundance and density of wildlife rapidly and with precision. Within the context of studying white-tailed deer, I evaluated the use of camera-traps and a recently developed spatial-mark resight model to estimate deer density and evaluate habitat and land use factors influencing deer density. The study was conducted in central Ontario, Canada on approximately 16 km2 of public land including the protected Peterborough Crown Game Preserve. Telemetry locations from 39 radio-collared deer were used and one hundred camera-traps were deployed for a total of 140 days from January 2022 to May 2022. Using telemetry locations and camera-trap photos I built a two-step spatial-mark resight model to estimate deer density. Deer density varied during the study as a portion of the population migrated to wintering areas outside of the study area. Despite fluctuations in precision, estimates improved towards the end of the study as more data became available and deer space use stabilized. The average deer density during the entire study was 3.0 deer/km2 (95% CI= 0.1, 5.8; SD= 1.7; CV= 55%; N= 238 deer). The lowest mean density was 0.2 deer/km2 (95% CI= 0.1, 0.4; SD= 0.1; CV= 50%; N= 15 deer) from February 26th to March 11th and the highest mean density was 4.8 deer/km2 (95% CI= 3.1, 6.2; SD= 0.8; CV= 17%; N= 378 deer) from May 7th to May 20th. When I incorporated spatial covariates into the model to estimate effects on deer density, higher proportions of mixed forest, deciduous forest, and road and trail density all had negative effects on deer density. While models contained some uncertainty, deer density appeared higher in the portion of the study area protected from licensed hunting. This thesis provides a framework for managers to use camera-traps and the spatial-mark resight model to monitor deer populations and link environmental covariates to spatial variation in density. As environmental threats such as habitat loss and infectious diseases increase in severity, monitoring wildlife population numbers will be vital for informed responses to these threats. The two-step spatial-mark resight model with environmental covariates provides managers with a long-term monitoring tool to evaluate management efforts and population health in forested areas.

Author Keywords: camera-trap, chronic wasting disease, landscape ecology, spatial-capture recapture, white-tailed deer, wildlife management

This study aimed to develop a culturally responsive teacher framework and evaluation tool for educators at Seabird Island Community School (SICS) and other Stó:lō First Nations community schools in British Columbia. Drawing from the perspectives of educators at SICS, the research sought to provide direction for wise pedagogical practices and establish effective evaluation methods rooted in best practices from the literature (Calliou & Wesley-Esquimaux, 2015). Employing qualitative methods, the study was informed by Wilson's concept of relational accountability (2008) and Ermine's notion of ethical space (2007). The research included interviews with nineteen educators, unveiling a range of opinions on what constitutes effective teaching at SICS. While educators widely recognized the importance of integrating Stó:lō culture into their practice, there was uncertainty about how to deeply embed it as a core element of the day-to-day educational experience. The data revealed four key themes that are essential to promoting effective evaluation: (1) fostering a growth mindset and commitment to lifelong learning, (2) creating supportive and transparent evaluation processes, (3) effective instruction, classroom management, and holistic assessment, and (4) cultural responsiveness, community engagement, and family communication. Moreover, the study highlights that an effective teacher evaluation framework at SICS must prioritize meaningful community engagement and foster solid relationships with students and their families. This suggests that the educator's role in community schools is deeply interwoven with the broader social ecosystem.

Author Keywords: community engagement, culturally responsive teaching, holistic assessment, Indigenous education, Stó:lō, teacher evaluation

The Lesser Yellowlegs (Tringa flavipes) is a steeply declining shorebird that breeds across boreal North America. I studied nest survival in Anchorage, Alaska, USA and Churchill, Manitoba, Canada and nest site selection factors in Churchill. Nests were monitored at each site and daily nest survival rates (DSR) were calculated based on a maximum likelihood approach. Overall nest survival was ~63% for Anchorage (lcl–ucl = 0.450–0.773, n=49) and ~28% (lcl–ucl = 0.113–0.481, n=26) for Churchill. Earlier initiation dates, warmer mid-incubation temperatures and lower temperature variability during nesting were linked with higher DSR. I tested nest site selection at territorial and microhabitat scales using multiple logistic regression to compare nest sites with random points. Lesser Yellowlegs selected territories further from water and, at the microhabitat scale, taller shrubs. Projected climate-related shifts in weather and habitat will likely present both benefits and challenges to Lesser Yellowlegs.

Keywords: Lesser Yellowlegs, Tringa flavipes, shorebird, nest survival, nest success, nesting habitat, breeding habitat, boreal, sub-arctic, climate change, Anchorage, Alaska, Churchill, Manitoba

Author Keywords: boreal, breeding habitat, Lesser Yellowlegs, nest survival, shorebird, Tringa flavipes

I used 31 years of Semipalmated Plover (Charadrius semipalmatus) population data to assess the effects of vital rates on a local breeding population of plovers in Churchill, Manitoba, Canada. I used three similar Bayesian Integrated Population Models (IPMs), with the last a coupled IPM population viability analysis (PVA) approach to predict the impact of changing spring temperatures on future population size. I estimated adult and juvenile apparent survival, fecundity, immigration rate, and yearly population size estimates, and I found that population growth rate was most highly correlated with immigration and adult apparent survival. Moreover, I found that the population remained relatively stationary with a slight decline in recent years. I also found a significant positive effect of spring average daily minimum temperature on juvenile apparent survival. I used this effect to inform my PVA and to evaluate the risk of quasi-extinction for 20 years after the end of the study. I found a low quasi-extinction risk and a greater probability of the population increasing in the next twenty years when informed by predicted spring temperatures from global climate models. My findings suggest some resilience of this species to one effect of climate change and emphasize the importance of continued monitoring to assess if declines in this species will change as multiple threats to their existence in the sub-arctic progress.

Author Keywords: Bayesian, Climate change, Integrated population model, Population dynamics, Population viability, Semipalmated Plover

In this study, twenty lake catchments surrounding Iqaluit, Baffin Island, were assessed for trace element concentrations (Al, As, Ba, Cd, Cr, Cu, Fe, Mn, Ni, Pb, Sb, Se, THg, V, Zn) in lake water, catchment soil, lake sediment, and moss (Hylocomium splendens). Additionally, the sources of each trace element were determined through the positive matrix factorization (PMF) model and enrichment factors (only in moss). Geogenic trace elements had the highest median concentrations (Fe>Al>Mn) throughout the study media and across the study catchments. Anthropogenic trace elements had the lowest median concentrations (Pb>As>Cd>THg) across the lake catchments, which were generally several orders of magnitude lower compared to geogenic elements. The PMF model identified trace elements associated with geogenic or anthropogenic sources, i.e., THg (47%), Cd (40%), Zn (34%), and Al (27%) were identified as originating from industrial emission sources deposited onto lakes because they accounted for a large proportion within the model.

Author Keywords: Arctic lake catchments, Biomonitoring, Enrichment factors, Positive matrix factorization model, Trace elements, Water chemistry

Globally, fledglings of more than 50 seabird species are vulnerable to stranding in human settlements near their colonies as they leave their nests for the first time. This phenomenon has been attributed to attraction toward and disorientation by artificial light at night (ALAN). Grassroots rescue programs find more birds in illuminated locations than in dark ones, but it is unclear to what extent this pattern is driven by seabird versus rescuer behaviour. I studied behavioural responses to ALAN in stranding-prone Atlantic puffin (Fratercula arctica) and Leach's storm-petrel (Hydrobates leucorhous) fledglings and investigated detection probabilities of 3D-printed puffin fledgling decoys by rescuers. I hypothesized that seabird strandings are due to attraction toward ALAN; that post-stranding behaviour varies with taxon and lighting conditions; and that post-stranding behaviour (e.g., concealment) and lighting conditions drive variance in detection probability of stranded seabirds by rescuers. To address my first hypothesis, I alternately illuminated two beaches near a Newfoundland puffin colony and found significantly more puffin fledglings stranded when the beaches were illuminated than when they were dark, supporting the light attraction hypothesis. Stranded puffins similarly moved toward light over darkness in a Y-maze choice experiment and were less active under LED light than in darkness or under high-pressure sodium light, demonstrating a preference toward certain light conditions post-stranding. In contrast, storm-petrels predominantly avoided lit conditions in a Y-maze and were less active in darkness than under light. Further, when provided with a place to hide, more than half of storm-petrels concealed themselves when in light conditions versus none in darkness. To test my third hypothesis, I deployed puffin decoys and found that rescuers detected them more easily in higher light levels, in less concealed locations, and with increased search effort. My results support historical deductions that seabird fledgling strandings are caused by attraction toward artificial light but demonstrate that post-stranding behavioural responses to ALAN depend on species and light type, which may in turn affect detection probability by rescuers.

Author Keywords: artificial light, atlantic puffin, charadriiform, Leach's storm-petrel, light attraction, procellariiform

This thesis presents a comprehensive investigation into machine learning approaches forlandmine detection using thermal imagery. It addresses both classification and precise lo- calization challenges that are integral for humanitarian demining operations. The research encompasses two complementary methodological frameworks: comparative evaluation of traditional machine learning versus deep learning approaches, then followed by an imple- mentation of hyperparameter optimization for enhanced safety performance. The foundation of the study demonstrates that traditional machine learning methods achieve competitive classification performance. Conventional models achieved significant performance with the Random Forest and RestNet50 respectively scoring accuracies of 91.88% and 94.29%, though struggle to achieve >10% when tasked with classification and localization. Expanding on this foundation, we addresses this gap through multi-task learn- ing frameworks that simultaneously optimize for both detection and precise localization. Through systematic hyperparameter tuning across 64 configurations, the optimized multi- task approach achieves 90% detection accuracy with 92% precision while providing precise bounding box localization, representing a 37.5% reduction in false negatives. These find- ings demonstrate that while traditional machine learning offers computational efficiency for basic detection, multi-task deep learning frameworks provide significant performance gains when requiring precise spatial localization, which is an important requirement in demining operations.

Author Keywords: computer-vision, demining, humanitarian, Landmines, Multi-Task Learning, YOLO

The synthesis of biaryls through transition metal catalyzed cross-coupling reactions has been instrumental for synthetic organic chemists. The Hiyama reaction, which features organosilicon derived cross-coupling partners with aryl chlorides, remains relatively underdeveloped compared to other cross-coupling reactions. In this thesis, it is demonstrated that bench stable Palladium N-Heterocyclic Carbene (NHC) precatalysts of the general type [(NHC)Pd(allyl)Cl] are highly active in the Hiyama cross-coupling of activated aryl chlorides with low catalyst loading. Notably, this research demonstrates that catalysts featuring sterically less demanding NHCs display higher activity in this reaction, which contrasts with other cross-coupling reactions. Preliminary mechanistic investigations including in situ reaction monitoring by 19F NMR spectroscopy have uncovered side reactions. These side reactions may explain the low catalytic performance observed with unactivated substrates. These studies could help to further develop this reaction and improve catalytic performance. Additional investigations have also been made into ligand development by altering the electronics of sterically hindered NHC ligands for use in other cross-coupling reactions.

Author Keywords: Catalysis, Cross-coupling, Organic Chemistry, Organometallics, Side Reactions, Synthesis

For this study, I asked Tyendinaga's healthcare professionals if they had any solutions to make the healthcare system run more smoothly when working with settlers. I wanted answers to four questions: 1. what role does our culture play in implementing or delivering mental/physical/spiritual/emotional midwifery/health/social services? 2. are there any gaps in services, or more precisely, any barriers that midwifery/health/social professionals encounter in implementing or delivering our holistic health services? 3. could they identify any problems they might face in completing paperwork to justify funding for their program? 4. could they offer their opinion regarding alternative approaches where they might create space for an intercultural dialogue regarding holistic health?I trusted that this would advance answers to my major dissertation questions: What are the obstacles or gaps and possible solutions to Indigenizing healthcare implementation, services, and delivery in Tyendinaga Mohawk Territory (TMT), Ontario? Is there a "space" like the Two-Row Wampum where two distinct peoples can negotiate their relationship regarding health in an equally respectful and reciprocal atmosphere?

Author Keywords: holistic health, Indigenous community engagement, Indigenous methodologies, Thanksgiving Address, Two Row Wampum

Individuals who use drugs face stigma in healthcare, leading to poor health outcomes and limited treatment access. This scoping review aims to provide healthcare professionals with key evidence needed for delivering acceptable care from the perspective of those who use drugs. A Lived Experience Advisory Panel determined what contributions represented the perspective of people who use drugs. Over 22,000 grey and white literature articles were screened, resulting in 14 relevant articles. Participant quotes illustrate five emerging themes: Being someone who matters, I trust that the people taking care of me trust me, I'm happy that you listened… I clearly have knowledge in this area, You don't know unless you've been there… We can tell you and Help me access services and resources—the importance of listening weaves through each theme. The findings have significant implications for healthcare professionals, aiding them and decision-makers provide more acceptable care for people who use drugs.

Author Keywords: patient perspective, patient satisfaction, patient voice, people who use drugs patient perspective patient voice patient preference patient satisfaction, PWUD, substance use