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Skip to Search Results- 1Barrie, Emily
- 1Biddlecombe, Brooke
- 1Cook, Andrew
- 1Dawe, Denyse A.
- 1Deakin, Samuel
- 1Del Bel Belluz, Vincent
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Fall 2021
Streams provide essential ecosystem services including nutrient cycling and uptake, organic matter processing and ecosystem production and respiration. Stream ecosystem functioning provides an integrated metric of biological structures and processes that can respond to anthropogenic land use...
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Climate change implications for distribution, phenology and conservation of Olive-sided Flycatchers (Contopus cooperi) and Western Wood-Pewees (C. sordidulus) in northwestern North America
DownloadFall 2020
Northwestern North America is predicted to experience some of the world’s greatest human-caused climate change. Understanding the impacts of associated changes will be imperative to the conservation and management of northern-breeding birds. In particular, long distance migrants and aerial...
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Effects of clear-cutting and wildfires on succession of ground beetle (Coleoptera: Carabidae) assemblages in western Alberta
DownloadSpring 2019
I studied how carabid beetle assemblages in lodgepole pine stands have responded after clear- cut harvest and wildfires on an actively managed landscape ~20 km south of Hinton, Alberta. This work builds on and expands the focus of a previous study (Niemelä et al. 1993) conducted 23-24 years...
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Feather mite ecology and morphology: exploring how obligate ectosymbionts of birds are impacted by life on hosts
DownloadFall 2022
Feather mites (Acariformes: Sarcoptiformes: Analgoidea and Pterolichoidea) are a group of small arachnids that inhabit the feathers of nearly every species of bird. Life as ectosymbionts has shaped the morphology and ecology of feather mites, whose entire life cycles (from egg to adult) are...
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From species to genes: ecological and evolutionary mechanisms structuring diversity in space and time
DownloadFall 2021
My Ph.D. thesis addresses three foundational questions in conservation biology: i) what is biodiversity and how is it best measured? ii) how does variation in habitat configuration, habitat composition, and environmental conditions affect emergent patterns of species diversity? and iii) how do...
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Fall 2019
Integrodifference equations are a common tool used in ecology to model the spread of populations. In this thesis, I explore the neutral genetic patterns formed by range expansions and how dispersal-reproduction trade-offs impact the spread of populations. In Chapter 2, we investigate the inside...
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Phenotypic and genetic variation in Rocky Mountain bighorn sheep (Ovis canadensis canadensis)
DownloadFall 2023
Genetic variation is a ubiquitous feature of natural populations and underpins much phenotypic variation. Genetic variance can be partitioned and examined at various hierarchical levels of organization to address fundamental questions in ecology and evolution. Patterns of genetic variance among...
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Spring 2023
Polar bear conservation faces significant challenges under Arctic warming, especially with respect to habitat loss and the resulting impacts on their seasonal energetic uptake and maintenance. Polar bears rely on sea ice for hunting, mating, denning, and rearing of offspring, and the availability...
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Post-fire regeneration of endangered limber pine (Pinus flexilis) at the northern extent of its range
DownloadSpring 2019
Limber pine (Pinus flexilis), an ecologically important species of the montane and subalpine regions of western Canada and the United States, is endangered in Alberta. Limber pine is thought to regenerate following fire, due to its relationship with a bird, the Clark’s nutcracker (Nucifraga...
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Sulfur Speciation and Curation Considerations for the Carbonaceous Chondrite Tagish Lake and Other Meteorites
DownloadSpring 2023
Carbonaceous chondrites contain significant abundances of sulfur components such as sulfide, sulfate, elemental sulfur (S0), and organosulfur compounds. These are significant because questions remain regarding the role of S in the origin of life. Chondrites and all other meteorites are out of...