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Skip to Search Results- 1Alsafi, Nora
- 1Bishop, Anna PM
- 1Boucher, Nicole
- 1Estevo, Cesar A
- 1Johnsen, Mitchell
- 1Mahaux, Jeremie N
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Anthropogenic influence on the autumn migration of polar bears (Ursus maritimus) in Hudson Bay
DownloadSpring 2022
Migratory species may shift established spatiotemporal patterns in response to anthropogenic impacts, so understanding the energetic consequences of behavioural plasticity may provide insight into how effectively migratory species respond to climate change. I used satellite telemetry to examine...
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Effects of retrogressive thaw slumping on particulate organic carbon dynamics in the Northwest Territories, Canada
DownloadSpring 2022
Climate change is increasing the frequency and intensity of thermokarst and accelerating the delivery of terrestrial organic material from previously sequestered sources to aquatic systems, where it is subject to further biochemical alteration. Rapid climate change in the glacially conditioned...
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Effects of Terrain on Climate and Consequences for Boreal Songbird Distribution and Refugia
DownloadFall 2024
Local climates have been increasingly recognized in ecological and climatological studies, particularly because anthropogenic climate change poses threats to biodiversity and ecosystems. Local climates exist at scales of meters to up to a few kilometers and are defined by the set of properties...
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Icing dynamics in the lake-dominated, discontinuous permafrost Taiga Shield, and effects on fluvial biogeochemistry, carbon cycling and microbial communities
DownloadFall 2023
Climate warming is affecting freshwater systems across the western Canadian subarctic, due to widespread shifts in precipitation regimes, permafrost degradation, and multi-decadal increases in winter baseflow. These changes are significant on the Taiga Shield, which comprises ~20% of North...
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Monitoring Ecosystem Dynamics in the Beaufort Sea using Stable Isotopes in Polar Bears (Ursus maritimus) and Ringed Seals (Pusa hispida)
DownloadSpring 2019
Extensive declines in sea ice extent and thickness are occurring within the Arctic and are projected to continue in the future due to amplified polar warming. As a result, community composition and structure are changing within Arctic ecosystems. Animal diets are influenced by accessibility and...
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Fall 2019
Elevational gradients are ideal ecological venues for testing how communities respond to environmental changes associated with global warming. Recent warming rates have been shown to increase with elevation, thereby potentially having adverse effects on cold-adapted alpine communities....
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Fall 2019
The ability of species to adapt to the shifting environmental conditions associated with climate change will be a key determinant of their persistence in the coming decades. This is a challenge already faced by species in the Arctic, where rapid environmental change is well underway. Caribou and...
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Space and habitat use of polar bears (Ursus maritimus) in Davis Strait in relation to sea ice conditions and harp seals (Pagophilus groenlandicus)
DownloadFall 2022
Patterns of space use and habitat selection by polar bears (Ursus maritimus) vary among subpopulations where they have been studied. The Davis Strait subpopulation is one of the least researched polar bear subpopulations and their spatial ecology is largely unknown. As an obligate carnivore,...
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Stream Carbon Flux in the Northern Pacific Coastal Temperate Rainforest: Seasonal DOC Transport and CO₂ and CH₄ Emissions
DownloadSpring 2020
Streams in British Columbia's humid, organic-rich Pacific Coastal Temperate Rainforest (PCTR) deliver globally significant yields of soil-derived dissolved organic carbon (DOC) to the ocean, which can affect ocean acidification, provide energy to coastal food webs, and off-gas to the atmosphere...
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Fall 2024
Forests generally provide the highest-quality water among all land cover types, but they are highly susceptible to disturbances like wildfire. Climate change is driving a trend toward hotter, drier conditions that have been intensifying fire regimes worldwide. The Pacific Coastal Temperate...