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Fall 2015

Mislan, Patrick

The development of novel biomarkers to help assess whether polar bear (Ursus maritimus) health is impacted by long-term physiological stress associated with climate change represents an emerging area of research. With progressively greater reductions in sea ice cover and a corresponding decrease...

Spring 2019

Shave, Justin

Plains bison (Bison bison bison) were nearly driven to extinction in the late 19th century due to overhunting and habitat loss, and populations occurring within their historic range and co-existing with natural predators are exceedingly rare. Studies examining gray wolf (Canis lupus) predation on...

Spring 2021

Klappstein, Natasha

Energetics are a key driver of animal decision-making, as survival depends on the balance between foraging benefits and movement costs. However, this fundamental perspective is often missing from habitat selection studies, which mainly describe correlations between observed space use and...

Fall 2015

Robinson, Barry G

Specialist predators with a limited diet may be less adaptable to environmental change than generalists, which consume a diversity of prey. As the climate changes, ecological homogenization is occurring, where generalist species outcompete specialists, reducing ecosystem complexity. In Arctic...

Fall 2023

Barrett, Kimberley G

Anthropogenic activities have pressured and altered landscapes resulting in extinctions and extirpations. However, increased conservation efforts and changing management strategies in some large carnivores have resulted in population and range expansion. Population growth and range expansion are...

Spring 2020

Karabatsos, Sofia

Long-term data is essential for addressing questions about how populations change over time in response to environmental variability, and natural and anthropogenic disturbance. Two species of mountain sheep (Ovis spp.) in Canada have been monitored over several decades and provided the data...

Fall 2023

Jodouin, Camille

Individual variation affects fundamental aspects of ecology and behaviour in many species. Individuals vary in sex, age, reproductive status, and personality, which can be compared between individuals (inter-individual) or within individuals (intra-individual). In this dissertation, I tested...

Spring 2018

O'Donovan, Sean

Naturally occurring stable isotope ratios and fatty acids are two types of chemical biomarkers frequently used to quantitatively estimate consumer diets. Stable isotope values in animal tissues and diets have been evaluated using Bayesian mixing models to provide dietary estimates of consumers in...

Spring 2023

Thompson, Peter

The spatial distributions of animals have fascinated scientists for centuries. Understanding where animals go and why helps ecologists conserve their populations. Technological advances during the 21st century have allowed scientists to record the spatial location of animals over time, motivating...

Spring 2020

Bohart, Alyssa Mary

Migration is a behavioral response to temporal variation in resources. While migration phenology is often predictable, phenology is expected to shift as climate change alters seasonal resource availability. We used data from satellite-linked telemetry collars on adult female polar bears (Ursus...