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- 2Dias de Andrade Silva, Raiany
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Food availability and grizzly bear (Ursus arctos) selection of post-fire and thinned forests in the mountain national parks of Canada
DownloadFall 2018
Human-caused mortality and habitat loss have led to the extirpation of grizzly bears (Ursus arctos) across much of their North American range. Today, these factors continue to limit extant grizzly bear populations as productive habitats often occur in areas with elevated mortality risk creating...
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Rhizosphere microbial response to predicted vegetation shifts and changes in rhizodeposition in boreal forest soils
DownloadFall 2018
The boreal forest is the single largest terrestrial store of carbon on Earth. In Canada’s boreal forest, approximately 23% of these carbon stocks are found in forest floors and 40% within mineral soils. The rhizosphere, soil under the direct influence of plant roots, is a hotspot for microbial...
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An Investigation of Potential Weed Management Practices and Multivariate Assessment Parameters for Alberta's Oil Sands Reclamation Efforts
DownloadSpring 2018
Reclamation efforts that promote the re-establishment of native tree and plant communities subsequent of large-scale oil sands mining land disturbances are crucial in restoring natural ecosystems. It is important that reclamation procedures capable of facilitating the establishment of native...
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The Importance and Influence of the Human Dimensions in Grizzly Bear (Ursus arctos) Conservation
DownloadFall 2018
Conservation practitioners increasingly recognize the importance and influence of the social context in conservation outcomes. From local stories to newsprint articles, the language we use, the stories we tell, and the interactions we have with wildlife species can influence human relationships...
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Distribution and breeding ecology of boreal and northern saw-whet owls in the Boreal forests of Alberta, Canada
DownloadSpring 2018
The boreal forest is an ecologically dynamic region with a long history of natural disturbances. These dynamics now run at a different and more rapid pace in Alberta because of land-use change, forestry, and developments in the energy industry. Although boreal owls Aegolius funereus and northern...
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Role of host identity, stand composition, soil type and disturbance severity in structuring ectomycorrhizal communities in the boreal forest
DownloadSpring 2018
The symbiosis between trees and ectomycorrhizal fungi (EMF) is essential for tree establishment and survival in the boreal forest because it is a disturbance prone ecosystem characterized by long harsh winters and low nutrient mobility. Ectomycorrhizal fungal community composition can be...
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Ecology and life history of Coccophagus gossypariae (Hymenoptera: Aphelinidae), a parasitoid of Eriococcus spurius (Hemiptera: Eriococcidae)
DownloadSpring 2018
The American elm (Ulmus americana) is a valuable component of urban forests in Alberta. In many Alberta municipalities, the health of these trees is being heavily impacted by the invasive scale insect Eriococcus spurius (Hemiptera: Eriococcidae). Biological control of scales using hymenopteran...
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Effects of Mineral Nutrition and Iron Supply on Growth and Physiological Responses of Selected Boreal Plant Species to Root Zone pH
DownloadSpring 2018
High soil pH can aggravate the effects of water deficit stress, inhibit root growth, and reduce the availability of essential elements to plants, especially iron. Iron deficiency can severely decrease plant growth and yield and result in plant mortality. In my study, I examined the effects of...
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Spring 2018
The development and application of quantitative soil quality assessment (SQA) concepts involve calibrating soil quality indicators (SQI), such as soil organic carbon (SOC), to soil management goals such as yield or biomass productivity to create soil quality-scoring functions (SQF). Currently,...
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Fall 2018
Understanding where and when populations occur is the first step to conservation and maintenance of biodiversity. Where human land-use overlaps with populations of conservation concern, population loss may occur, potentially reducing long-term persistence of species, particularly for those that...