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Presents a study that documented the traditional ecological knowledge of the Alaska Native hunters of beluga whales in Cook Inlet to add information available on the population. Importance of summer feeding to Cook Inlet belugas; Predation by killer whales; Information on beluga cows and calves.
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Mining landscapes are avowedly complex and dynamic cultural resources, representing an important part of the nation's cultural heritage. They reflect changes in technology, social organization, and the influence of outside events. Mining landscapes are also representative of the experiences of change over time. This representative experience is not well-represented in the typical approach to considering preservation of mining districts during the review of federal projects. This thesis takes a different approach, developing a classification system with a greater focus on the changes that occur, and tests this against a small-scale lode mining district in Southcentral Alaska. While the ability to factor in change...
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Cryostratigraphic mapping in the main shaft of the CRREL tunnel indicates secondary modification of original Pleistocene-age syngenetic permafrost. Layered, lenticular-layered and micro-lenticular cryostructures within undisturbed silt characterise the syngenetic permafrost. Thawed and refrozen deposits are characterised by massive and reticulate-chaotic cryostructures. The micro-morphology of typical cryostructures, as observed through an environmental scanning electron microscope (ESEM), is described. It is inferred that preferential cryogenic modification has occurred due to fluvio-thermal erosion operating along ice wedges. Soil and ice pseudomorphs are the manifestation of this process. Gravel, silt, ice and...
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Increased light reaching streams as a result of riparian vegetation management is often thought to be responsible for enhanced algal productivity. However, concomitant changes in nutrients and other physical processes confound that interpretation. We manipulated light in two separate experiments to test the role of light as a controlling factor for periphyton productivity and biomass, and to observe invertebrate responses in small streams in central British Columbia, Canada. We did this by adding artificial light to reaches of three forested streams, and in a second experiment we used shadecloth to cover reaches of two streams flowing through clearcuts. Periphyton growth, productivity and composition, and macroinvertebrate...
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In Canada, little is known about the governance of private protected areas (PPAs) and their contribution to the public interest. This dissertation evaluates the extent to which PPAs in Canada adhere to generally advanced principles of good governance---Direction, Legitimacy, Fairness, Performance and Accountability---and it assesses their contribution to the public interest. Findings from descriptive analysis of six case studies of Individual, Corporate, Non-Government and First Nation authorities indicate that principles are adhered to with relative vigor and visibility and that the public interest is generally advanced. The governance pattern is not strongly differentiated and it is generally uniform in strengths...
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Pattern and extent of treeline change using sequential vertical aerial photography in the northern section of the Kluane Ranges of southwest Yukon are examined. One of the most common predictions is that continued global temperature increases will cause the tree-line to advance in elevation and latitude. Comparison of aerial photographs of southwest Yukon indicates significant changes in the spruce forest-shrub tundra transition. Many areas exhibit increased growth of individual spruce without an increase in stand density or an advance in spruce distribution. Increase in the elevational distribution of spruce is observed in comparatively fewer areas, typically in combination with other two types of change.
map background search result map search result map Governance of private protected areas in Canada: Advancing the public interest? Climate Change and Hazard Zonation in the Circum-Arctic Permafrost Regions Holocene environmental history of the Aishihik Region, Yukon, Canada The influence of coyote on Canada lynx populations assessed at two different spatial scales Multi-trophic resilience of boreal lake ecosystems to forest fires The mining landscape from a diachronic perspective: Examining the Kenai Star mining district, Southcentral Alaska Impact of doubled CO2 on the interaction between the global and regional water cycles in four study regions Experimental increases and reductions of light to streams: effects on periphyton and macroinvertebrate assemblages in a coniferous forest landscape Characteristics of discontinuous permafrost based on ground temperature measurements and electrical resistivity tomography, southern Yukon, Canada The Ecological Future of the North American Bison: Conceiving Long-Term, Large-Scale Conservation of Wildlife The Application of Microsatellites for Stock Identification of Yukon River Chinook Salmon Distribution and abundance of landbirds in the Tanana Valley State Forest, Alaska 2002-2003 Wrangell - St. Elias National Park and Preserve : Alaska : Water resources scoping report Is Alaska's Boreal Forest Now Crossing a Major Ecological Threshold? Rapid Cycling of Organic Nitrogen in Taiga Forest Ecosystems Evidence of Recent Treeline Dynamics in Southwest Yukon from Aerial Photographs Traditional Knowledge of the Ecology of Belugas, Delphinapterus leucas, in Cook Inlet, Alaska Further cryostratigraphic observations in the CRREL permafrost tunnel, Fox, Alaska Further cryostratigraphic observations in the CRREL permafrost tunnel, Fox, Alaska Experimental increases and reductions of light to streams: effects on periphyton and macroinvertebrate assemblages in a coniferous forest landscape Rapid Cycling of Organic Nitrogen in Taiga Forest Ecosystems Governance of private protected areas in Canada: Advancing the public interest? Holocene environmental history of the Aishihik Region, Yukon, Canada Traditional Knowledge of the Ecology of Belugas, Delphinapterus leucas, in Cook Inlet, Alaska Multi-trophic resilience of boreal lake ecosystems to forest fires Distribution and abundance of landbirds in the Tanana Valley State Forest, Alaska 2002-2003 Wrangell - St. Elias National Park and Preserve : Alaska : Water resources scoping report Characteristics of discontinuous permafrost based on ground temperature measurements and electrical resistivity tomography, southern Yukon, Canada Evidence of Recent Treeline Dynamics in Southwest Yukon from Aerial Photographs Is Alaska's Boreal Forest Now Crossing a Major Ecological Threshold? Impact of doubled CO2 on the interaction between the global and regional water cycles in four study regions The Application of Microsatellites for Stock Identification of Yukon River Chinook Salmon The Ecological Future of the North American Bison: Conceiving Long-Term, Large-Scale Conservation of Wildlife Climate Change and Hazard Zonation in the Circum-Arctic Permafrost Regions The influence of coyote on Canada lynx populations assessed at two different spatial scales