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Skip to Search Results- 21Climate change
- 4Assisted migration
- 3Alberta
- 3Drought
- 3Species distribution models
- 2Bioclimatic envelope model
- 2Isaac-Renton, Miriam G
- 1Arregoces, Julio
- 1Baah-Acheamfour, Mark
- 1Boyce, Scott Samuel David
- 1Burd, Katheryn
- 1Crisfield, Varina
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Identifying seasonal Lake Sturgeon (Acipenser fulvescens) movement patterns and habitat selection in the South Saskatchewan River Basin
DownloadFall 2016
Lake Sturgeon (Acipenser fulvescens Rafinesque 1817) have experienced population declines throughout their range. In Alberta, low density age-class distributions, irregular recruitment, critically low spawning potential ratios and other factors led to a 2007 designation of “Threatened” for this...
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Influence of wildfire and permafrost thaw on dissolved organic carbon (DOC) in northern peatlands; implications for lability and downstream transport
DownloadFall 2017
Peatlands in Canada’s western boreal forest are a major source of dissolved organic carbon (DOC) to downstream ecosystems, where DOC regulates carbon cycling, and can affect ecosystem productivity and habitat quality. Subarctic ecosystems are becoming increasingly vulnerable to the effects of...
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Fall 2015
Given high levels of human disturbance and projected rates of climate change, many species will be unable to keep pace with their shifting climatic ranges and thus face increased risk of extinction. This research investigated the use of assisted migrations for two rare and range-restricted plant...
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Modeling the impacts of recent climate change on ecosystem productivity across North America
DownloadFall 2015
There is evidence of warming and changes in precipitation over recent decades in most regions of North America (NA) that are affecting ecosystem productivity. The impacts of these changes on land-atmosphere carbon exchange over a wide range of biomes are spatially heterogeneous and uncertain. In...
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Political Governance, Socioeconomics, and Weather Influence Greenhouse Gas Emissions across Subnational Jurisdictions in Canada
DownloadSpring 2023
The drastic and immediate reduction of global greenhouse gases (GHG) is vital if humanity is to avoid the moderate to severe effects of a changing climate. To successfully lower these emissions, it is necessary to integrate and harmonize GHG reduction policies across horizontal and vertical...
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Regional-scale hydrologic settings buffer black spruce regeneration in the presence of post-fire droughts
DownloadSpring 2024
Lanti-Traikovski, Alexander A.
Climate change is increasing the frequency of droughts and wildfires, reducing tree recruitment, and altering post-fire species composition. In Canada’s western boreal forests, postfire recruitment, particularly of drought-intolerant coniferous species like black spruce, has declined in recent...
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Soil Organic Carbon Content and Stability, and Greenhouse Gas Emissions in Three Agroforestry Systems in Central Alberta, Canada
DownloadFall 2016
Western Canada’s prairie region is extensively cultivated for agricultural production, which is a large source of greenhouse gas (GHG) emissions. Agroforestry systems are common land uses across Canada, which integrate trees into the agricultural landscape and could play a substantial role in...
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Spatial and Temporal Variations in Tree Growth, Mortality, and Biodiversity in Alberta Forests
DownloadSpring 2014
Understanding the spatial and temporal variation of tree demographic rates and biodiversity is essential for predicting the dynamics of forest ecosystems and their responses to changing environments. This thesis contributes to that understanding through modeling the long-term change in tree...
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Fall 2011
Rangelands, a natural ecosystem widespread in Canada, are an important source of land for animal production. Around 26 million ha of rangelands are utilized for beef production and in Alberta, this ecosystem accounts for 6.6 million ha which provides up to 50% of total forage for livestock. To...
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The impact of recreational activities on an alpine vascular plant community in the Canadian Rockies
DownloadFall 2010
Alpine tundra is notorious for its fragility and slow recovery following disturbance. Tourism is increasing in alpine areas, creating the need to improve our understanding of the impacts of recreation in these ecosystems. This study examined the impacts of hiking and off-highway vehicle use on...