176 Dossier(s) trouvé(s) à l’emplacement "Région désignée des Gwich'in" (les projets pluriannuels sont regroupés):
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Fire Severity and Growth of Treeline Tree Species: Climate Change Implications
chercheur principal:
Année(s) de permis: 1992
Résumé: The experiment will determine the interacting effects of fire severity, soil moisture and air temperature treatments on the emergence, winter survival and initial growth of treeline and near treeline tree species. The availability and viability of tree seed for successful regeneration of the treeline and near-treeline tree species will also be determined....


Climatic Change at the Forest-Tundra Boundary
chercheur principal:
Année(s) de permis: 1992 1991 1990
Résumé: To determine the maximum size of treeline tree species in a burned and unburned valley in the Caribou Hills, the mass of standing trees on different slopes and aspects will be estimated and related to the energy input. In 1992 the plots prepared in 1990 and planted and seeded in 1991, will be revisited and measurement of growth for the second growing season will be taken....


Vegetation Response to Global Warming in the Mackenzie River Basin: Interations Between Northern Boreal Forests, Wetlands and Regional Hydrology
chercheur principal:
Année(s) de permis: 1992
Résumé: The Researcher will map the present distribution of boreal and subarctic wetlands in the Mackenzie River Basin. Wetland vegetation and water chemistry will be described for areas immediately surrounding permanent weather stations. The ecological relationships between climate, wetland water chemistry and wetland species distribution will be analyzed. A predictive indicator model will be built to pr...


Statement of Significance and Resource Description and Analysis for Pingo Canadian Landmark
chercheur principal:
Année(s) de permis: 1991
Résumé: To provide a basis for planning and management of the Pingo Canadian Landmark site, required by the Inuvialuit Final Agreement, the researchers will identify the significance of the biophysical, cultural and economic resources....


Digital Database of Vegetation Types of the Mackenzie Valley Development Corridor
chercheur principal:
Année(s) de permis: 1992 1991
Résumé: The Researcher will conduct a survey, approximately 30 km on either side of the Mackenzie River using satellite imagery. A classification will be undertaken of the area from the Mackenzie Delta to the Fort Simpson area, with wider zones along the east side to include proposed pipeline routes. The information can be plotted as colour maps to show the location of trap lines, forest fires or wildlife...


The Biology of Predaceous Insects in the Canadian Arctic
chercheur principal:
Année(s) de permis: 1992 1991
Résumé: The Researcher will investigate the biology of predaceous insects in terrestrial and freshwater habitats. An inventory of predaceous insects will be conducted through trapping and collecting. Their prey and habits will also be identified....


Site Tenacity of Bowhead Whales and their Vulnerability to Displacement by Disturbance
chercheur principal:
Année(s) de permis: 1990
Résumé: The Researcher and team will apply new tag technology and DNA analysis to a study of site tenacity and industrial disturbance of bowhead whales. They will test the feasibility of using sonic tags to track bowheads underwater and will be testing sampling methods for collecting skin from live whales for DNA analysis....


North Slope Char Summer Ecology Project
chercheur principal:
Année(s) de permis: 1990
Résumé: The Fieldwork will involve removing fish from selected pools by a number of methods including electroshocking, seine and angling. They will be anaesthetized, weighed, measured and tagged. The researcher estimates that no more than 5% of the total catch will be dead sampled....


Dendrochronology of Arctic Driftwood
chercheur principal:
Année(s) de permis: 1990
Résumé: The Researcher will sample about 100-200 driftwood logs using a chain-saw to cut off a 1-2 cm plate about 0.5 m inside the end of each log. The material will be shipped to Lund University laboratory for examination....


Re-evaluation of Disturbance Experiments in the Lower Mackenzie Region, NWT
chercheur principal:
Année(s) de permis: 1993 1992 1989 1988 1987
Résumé: In the early 1970's, several test plots were established to see what happens when the plants and soil are disturbed or removed by fire, oil spills, and vehicles. Dr. Wein and two students will be re-visiting these sites to document how the plants have recovered since that time....


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