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Predation of fish raised and released as part of conservation aquaculture programs can pose a threat to the recovery of endangered populations. Therefore, understanding the impact of specific predators is important to inform these programs. In…

Urbanization is considered one of the greatest human-caused threats to biodiversity. Human development and encroachment on native habitats and its impacts on species, however, is nuanced; while it has been found to create detrimental impacts on some…

I investigated the behavioural, physiological, and movement responses of barren-ground caribou to the Tibbitt to Contwoyto Winter Road in the central Northwest Territories. Previous research on the zone of influence around industrial infrastructure…

Kokanee, the non-anadromous life history form of Oncorhynchus nerka, use lacustrine habitat in watersheds draining into the north Pacific Ocean. Kokanee have also been widely introduced into reservoirs following impoundment of rivers due to the…

Hatchery enhancement of declining Pacific salmon populations has long been a foundation of salmon management; however, the influence of hatchery release practices on freshwater residence time and survival to estuarine entry is not well-understood.…

The Arctic is warming at an unprecedented rate, with implications for the marine ecosystem and species that are important for the tradition, culture, and livelihoods of Indigenous people. Inuit in the western Canadian Arctic have identified a need…

Caribou (Rangifer tarandus) are declining worldwide. Across Canada, numerous populations have been extirpated over the past 50 years. In many cases, the mechanism of these declines is unsustainable predation exacerbated by apparent competition.…

Understanding the mountain pine beetle detoxification systems is vital for predicting its continued spread into the novel jack pine host. Phylogenetic analyses were conducted for mountain pine beetle catalase, glutathione peroxidase, superoxide…

Glyphosate is the active ingredient in many common broad-spectrum herbicides used in forestry operations to reduce the presence of unwanted, competitive plant species. As a result of aerial applications, non-target forest understory plants receive a…

Little brown bat (Myotis lucifugus) populations have dramatically declined in North America as a result of white-nose syndrome, a fungal pathogen. The identification and protection of hibernacula is important to conservation efforts for the species…

Cultural evolution of birdsong occurs when songs change over generations and such changes can spread directionally or via drift within and between populations. The objective of this thesis was to document the emergence and spread of a novel song…