Skip to main content
Advanced Search

Filters: Types: Shapefile (X) > Extensions: Shapefile (X) > Extensions: Citation (X)

5,442 results (33ms)   

View Results as: JSON ATOM CSV
thumbnail
Riverine sockeye salmon Oncorhynchus nerka (those that do not use nursery lakes for juvenile rearing) tend to be characterized by greater genetic diversity and weaker population structure than lake-type populations. These findings have led to the 'recurrent evolution' hypothesis for sockeye salmon life histories, which proposes that riverine sockeye salmon are the principal colonizing form and play the dominant role in the long-term persistence of sockeye salmon in a dynamic landscape. However, previous studies in Kamchatka (Russia) and Alaska have suggested that the general patterns of riverine sockeye salmon do not apply in all parts of the species' range. In this study, we examined genetic diversity and population...
thumbnail
Purpose of the Management Plan The purpose of the Management Plan (MP) is to provide strategic direction for Liard River Corridor Park, Liard River Corridor Protected Area, and the adjacent Scatter River Old Growth Park in northern British Columbia, established in 1999. The MP provides background information on the protected area attributes, land use, tenure, interests, role in the protected area system, existing commitments and issues. It then specifies priority objectives and actions for management of the park. The implementation of the conservation and development strategies identified in this MP is subject to funding availability and agency priorities. Future detailed management plans may provide further...
thumbnail
This paper examines changes in climate with respect to permafrost and engineering design in Arctic regions. Current understanding of climate changes, predictive modeling, and climate data were studied. Inconsistencies and differences were noted, discussed, and evaluated using comparisons of the resulting climate data and graphs. A graphical analysis was done to compare different methods of data analysis and different visual interpretations of historical climate trends. The graphical analyses in this paper should be used as a guide for determining the accuracy of thermal design parameters applied to current project designs. The methodology used to evaluate raw data can greatly affect the output values used in design....
thumbnail
The effects of exchanging noncertified with certified wood-burning devices on the 24h-average PM2.5concentrations in the nonattainment area of Fairbanks, Alaska, in a cold season (October to March) were investigated using the Weather Research and Forecasting model inline coupled with a chemistry package. Even changing out only 2930 uncertified woodstoves and 90 outdoor wood boilers reduced the 24 h-average PM2.5concentrations on average by 0.6 μg.m−3 (6%) and avoided seven out of 55 simulated exceedance days during this half-a-year. The highest reductions on any exceedance day ranged between 1.7 and 2.8 μg.m−3. The relative response factors obtained were consistently relatively low (~0.95) for all PM2.5 species...
thumbnail
The contents of this report include: an update on Board membership and staff; a description of the draft implementation strategy to the Plan; the Planning Board's priorities for 2004-2005; a review of land use permits and water licences issued, and an explanation of how an approved Plan has affected those acivities; a list of action items that are currently being addressed; recommendations for groups to consider in the next year; the Planning Board's work plan for 2003-2004, and; the audited financial statements for 2003-2004. ... All regulatory agencies have to ensure that all licensed, permitted, and othe authorized activities related to the use of land, water, and the deposit of waste conform with the Plan. The...
thumbnail
This thesis investigates the theory and practice of integration in resource and environmental management. Research on integration is growing as a result of the escalating demands placed on resources, an increase in the quality and quantity of information available concerning the environment, and the increased involvement and coordination of partners and participants in resource and environmental decision-making. Focus is placed on several resource and environmental management processes in the Southwest Yukon, including wildlife management, protected areas management, forest management and environmental assessment. A case study approach is utilized to examine the perception and practical application of integration...
thumbnail
Lake sediment cores collected from four lakes (Upper Fly Lake 61.04°N, 138.09°W, 1326 m a.s.l.; Jenny Lake 61.04°N, 138.36°W, 817 m. a.s.l.; Donjek Kettle 61.69°N, 139.76°W, 732 m a.s.l.; Lake WP02 61.48°N, 139.97°W, 1463 m a.s.l.) in the southwest Yukon provide records of postglacial climatic variability in the region. A 13,000 year pollen record from Upper Fly Lake indicated that herbaceous tundra existed on the landscape from 13.6 to 11 ka, followed by birch shrub tundra until 10 ka, when Picea forests were established in the region. Pollen-, chironomid-, and ostracode-inferred paleoclimate reconstructions showed a long-term cooling with increasing moisture from the late glacial through the Holocene. The early...
thumbnail
In glacier-fed systems climate change may have various effects over a range of time scales, including increasing river discharge, flood frequency and magnitude. This study uses a combination of empirical monitoring and modelling to project the impacts of climate change on the glacial-fed Middle Fork Toklat River, Denali National Park, Alaska. We use a regional calibration of the model HBV to account for a paucity of long term observed flow data, validating a local application using glacial mass balance data and summer flow records. Two Global Climate Models (HADCM3 and CGCM2) and two IPCC scenarios (A2 and B2) are used to ascertain potential changes in meteorological conditions, river discharge, flood frequency...
map background search result map search result map A First Approximation of Holocene Inter-Assemblage Variability in Central Alaska The Significance of Shifts in Precipitation Patterns: Modelling the Impacts of Climate Change and Glacier Retreat on Extreme Flood Events in Denali National Park, Alaska Peace River Management Plan for Liard River Corridor Provincial Park and Protected Area and Scatter River Old Growth Provincial Park Competitive interactions across a soil fertility gradient in a multispecies forest The effect of fire and permafrost interactions on soil carbon accumulation in an upland black spruce ecosystem of interior Alaska: implications for post-thaw carbon loss Species Listing under Canada's Species at Risk Act TADAM: A dynamic whole-stand approximation for the TASS growth model. (Erratum: 2005 Nov-Dec, v. 81, no. 6, p. 815.) Assessing integration in resource and environmental management in the Southwest Yukon Exploring the sensitivity of soil carbon dynamics to climate change, fire disturbance and permafrost thaw in a black spruce ecosystem Monsoma pulveratum (Retzius) (Hymenoptera: Tenthredinidae) Allantinae), a Palearctic sawfly defoliator of alder in Alaska and new to the United States Annual report of the Gwich'in Land Use Planning Board, April 2003 - March 2004 Wood-Burning Device Changeout: Modeling the Impact on PM2.5 Concentrations in a Remote Subarctic Urban Nonattainment Area Alder (Alnus crispa) effects on soils in ecosystems of the Agashashok River valley, northwest Alaska Evaluating GCM outputs for past climates in North America based on the distribution of Sphagnum peatlands Holocene environmental variability inferred from lake sediments, southwest Yukon Territory, Canada Spruce beetles and forest ecosystems of south-central Alaska Application of time-lapse digital imagery for ground-truth verification of satellite indices in the boreal forests of Alaska Genetic Diversity and Population Structure in the Kuskokwim River Drainage Support the Recurrent Evolution Hypothesis for Sockeye Salmon Life Histories Predation on moose and caribou by a regulated wolf population Peace River Management Plan for Liard River Corridor Provincial Park and Protected Area and Scatter River Old Growth Provincial Park Holocene environmental variability inferred from lake sediments, southwest Yukon Territory, Canada Wood-Burning Device Changeout: Modeling the Impact on PM2.5 Concentrations in a Remote Subarctic Urban Nonattainment Area Exploring the sensitivity of soil carbon dynamics to climate change, fire disturbance and permafrost thaw in a black spruce ecosystem Alder (Alnus crispa) effects on soils in ecosystems of the Agashashok River valley, northwest Alaska Assessing integration in resource and environmental management in the Southwest Yukon Predation on moose and caribou by a regulated wolf population Spruce beetles and forest ecosystems of south-central Alaska A First Approximation of Holocene Inter-Assemblage Variability in Central Alaska The effect of fire and permafrost interactions on soil carbon accumulation in an upland black spruce ecosystem of interior Alaska: implications for post-thaw carbon loss Genetic Diversity and Population Structure in the Kuskokwim River Drainage Support the Recurrent Evolution Hypothesis for Sockeye Salmon Life Histories Annual report of the Gwich'in Land Use Planning Board, April 2003 - March 2004 Monsoma pulveratum (Retzius) (Hymenoptera: Tenthredinidae) Allantinae), a Palearctic sawfly defoliator of alder in Alaska and new to the United States The Significance of Shifts in Precipitation Patterns: Modelling the Impacts of Climate Change and Glacier Retreat on Extreme Flood Events in Denali National Park, Alaska Competitive interactions across a soil fertility gradient in a multispecies forest Application of time-lapse digital imagery for ground-truth verification of satellite indices in the boreal forests of Alaska TADAM: A dynamic whole-stand approximation for the TASS growth model. (Erratum: 2005 Nov-Dec, v. 81, no. 6, p. 815.) Evaluating GCM outputs for past climates in North America based on the distribution of Sphagnum peatlands Species Listing under Canada's Species at Risk Act