Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 29 for “"boreal forests"”.
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Impacts of habitat and landscape characteristics on reproductive ecology of female lesser scaup (Aythya affinis) in the boreal forests of Alberta
… two-thirds of the breeding population nesting in boreal forests, it is imperative to understand how changes in habitat features and landscape changes could negatively impact breeding scaup; this information could also help to guide waterfowl conservation and management programs. It has been …
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The Relationship between Wildfire Dynamics and Soil Carbon in Boreal Forests of Alaska: Forest Management for Emissions Reduction in a Changing Climate
<p>The boreal region of Alaska has vast forests spanning hundreds of thousands of square kilometers in the central portion of the state that is prone to large stand replacing summer wildfires. The region stores considerable quantities of terrestrial carbon sequestered in soil horizons down to 1 …
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From land to water: the impacts of forest disturbances on carbon cycling in northern catchments
Boreal forests hold 32% of the world’s terrestrial organic matter and are continually disturbed by biotic and abiotic events. These disturbances are especially important since they facilitate the redistribution of nutrients within and between ecosystems, which can alter resource use and …
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Habitat Selection and Range Overlap of Moose and White-tailed Deer in the Boreal Plains of Saskatchewan
In the Boreal Plains of western Canada, human land use has created extensive linear features (roads, trails, transmission corridors) linking nodes of disturbance such as forestry cutovers and wildfire burns. These changes, compounded by climate change, are reshaping predator–prey relationships …
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Drivers of spatial and temporal variability in the fire regime of boreal forest in western Russia
… properties and ecosystem functions within the boreal forest. However, significant spatial and temporal variability in fire regimes occurs across this area that may not current be being encompassed in models and predictions of its future, particularly under a changing climate. This study has …
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From Right-of-Way to Recovery: Challenges and Opportunities in Pipeline Right-of-Way Restoration in Northeast British Columbia
… Columbia has significantly fragmented the boreal forest ecosystem, with pipeline right-of-way being a key contributor. Regulatory frameworks, critical for shaping restoration outcomes, remain fragmented and inconsistent. This study examined how the current regulatory framework influences …
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Fire regime change and the boreal forest carbon cycle from 10,000 years ago to 2100 AD
Boreal forests play an important role in the global carbon cycle, and wildfire is a key control of boreal carbon dynamics. Rapid high latitude climate change will likely alter boreal fire regimes, potentially disrupting the historical role of the biome as a major sink for anthropogenic carbon …
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Impacts of multiple fires and wind disturbance on forest community composition, succession and diversity in the Boundary Waters Canoe Area Wilderness.
… including wildfires and severe windstorms. While boreal forests such as those of the BWCAW are generally considered disturbance adapted, it is uncertain how changing disturbance regimes will impact these forests. We used a series of recent disturbances in the BWCAW ranging from areas affected by …
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Responses of boreal fire regimes to climatic and land-cover changes: perspectives from multiple spatiotemporal scales
Area burned has doubled in Alaskan boreal forest over the past several decades, and fires are expected to increase in frequency and size as a result of anthropogenic climate change in the 21st century. Because wildfires have an important regulatory role in maintaining boreal forests, fire-regime …
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Clearcut Solutions? An Evaluation of Partial Harvesting in the Black Spruce Boreal Forest
… evaluates partial harvesting in the black spruce boreal forest. Forest management in Ontario is required to emulate natural disturbances, but in regions of the boreal forest where fire cycles are long, regulated even-aged management by clearcutting has truncated forest age-class distributions. …
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Disturbance impacts on non-native plant colonization in black spruce forests of interior Alaska
While boreal forest habitats have historically been relatively free from invasive plants, there have been recent increases in the diversity and range of invasive plants in Alaska. It is critical that we understand how disturbances influence invasibility in northern boreal forests, to avoid the …
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Holocene variations in summer temperature and effective moisture: Understanding the causes of vegetational dynamics in Alaska
… regions that experienced advanced positions of forests associated with an early Holocene maximum in solar irradiation, closed boreal forests in Alaska only developed ~6000 years ago after a prolonged forest-tundra phase. The contrasting history of forest development in Alaska compared to …
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From Hyperspectral Indices to Global Fluorescence: PACE Vegetation Indices as Predictors of Terrestrial Photosynthesis
… biome-stratified study regions, including forests, grasslands, agricultural systems, and xeric landscapes. Simple univariate linear models reveal that the Enhanced Vegetation Index (EVI) and the Chlorophyll Index Red Edge (CIRE) are the most reliable global predictors of SIF, accounting for …
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Importance of boundary layer entrainment for surface fluxes over land
… than expected values are retrieved over the Boreal forests.
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Evaluating dNBR and CBI for Fire Severity Estimation in Fennoscandian Boreal Surface Fires
… forest management decisions. In Fennoscandian boreal forests, however, accurate severity estimation using remote sensing remains challenging due to relatively small burn areas and canopy cover obscuring surface-level fire impacts. This thesis aims to investigate the accuracy of the differenced …
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Simulating and quantifying land-surface biogeochemical, hydrological, and biogeophysical processes using the Community Land Model version 4
… biogeochemistry components in CLM4 is longer for boreal forests than for other ecosystems, 2) with more water is lifted from deep soil, Amazonia ecosystems start to take up carbon during dry seasons, 3) the timing of boreal spring runoff simulations is improved by reducing the impermeable area …
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Impacts of meteorology-driven seed dispersal on plant migration : implications for future vegetation structure under changing climates
… shows significantly improved representation of boreal forests in Western Siberia and temperate forests in Eastern Europe. The prevailing wind pattern, along with the existing vegetation structure in nearby grid cells, alters the competition dynamics of the trees in these regions by filtering …
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Climate change adaptation and sustainable forest management in the boreal forest
… to achieve sustainable forest management in the boreal forest. A logical starting point for climate change adaptation is to proactively identify management practices and policies that have a higher likelihood of achieving management objectives across a wide range of potential climate futures. …
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Wildfire Management in the Southside Region of Canada’s Montane Cordillera - A Systems Modelling Application on Firebreak Strategies
… of the importance of preserving Canada’s forests. Canada’s 348 million hectares of forest land cover 35% of its land area, representing 9% of the world’s forests and 24% of the world’s boreal forests. As a renewable resource, forests offer significant environmental, economic and …
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Fine root dynamics in the Boreal Forest of northern Saskatchewan, Canada
… roots (FR) (roots < 2 mm in diameter) in the boreal forests has become a focus of many forest researchers in the past decade in an effort to better understand belowground processes and improve current carbon (C) models to better predict possible C sinks and sources. The objectives of this …
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