56 Dossier(s) trouvé(s) à l’emplacement "Région désignée des Gwich'in" (les projets pluriannuels sont regroupés):
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Deltaic Lake Sediments as Recorders of Past Carbon Export from Arctic River Drainage Basins
chercheur principal:
Année(s) de permis: 2011 2009 2007
Résumé: The research project goal is to collect surface sediments, bank and levee sediments, particulate sediments and shallow sediment cores from lakes in the Mackenie River Delta, and to evaluate their utility as potential archives of information concerning past permafrost stability by assessing down-core changes in the age and supply of terrestrial carbon. In 2007 and 2009, teams led by Prof. Tim Eglin...


Recent changes in carbon source-sink relationships and greenhouse gas emissions in forest and peatland ecosystems along the Mackenzie Valley region of Canada
chercheur principal:
Année(s) de permis: 2011 2010 2009 2008 2007
Résumé: The objectives of this research project are to: 1. map and assess changes in the distribution and composition of forest and peatland ecosystems due to climate changes; 2. estimate carbon storage (and variation) in boreal to arctic ecoregions of the Mackenzie valley; and 3. assess interannual and seasonal variations and key processes controlling carbon dioxide (CO2) and methane (CH4) dynamics. ...


Adaptation Planning for Climate Change in Ulukhaktok, Paulatuk and Aklavik, NWT
chercheur principal:
Année(s) de permis: 2011 2010
Résumé: The researcher will work in collaboration with community members, local stakeholders, scientists and policy makers to complete the development of climate change adaptation plans in Paulatuk and Ulukhaktok and Aklavik. In Paulatuk and Ulukhaktok, ArcticNorth researchers working with local research assistants and coordinators, will reconvene the working groups from winter 2010 to review the preli...


Towards Long-term Monitoring of the CO2 System in Arctic Rivers
chercheur principal:
Année(s) de permis: 2012 2011 2010
Résumé: The goal of this research is to initiate time-series measurements of the CO2 system in the Mackenzie River, the major Arctic river in North America. This work will serve as the initial step towards long-term measurements and studies of the impacts of global warming on the CO2 systems in Mackenzie River, its estuary, and adjacent coastal waters. The field campaigns will include both diurnal and...


Land Management Problems in Hydrocarbon Development Areas with Ice-Rich Permafrost: Detection and Assessment
chercheur principal:
Année(s) de permis: 2010 2009
Résumé: This licence is being issued for the scientific research application no. 946. The objective of this research is to better understand the distribution of underground ice in hydrocarbon development areas. By identifying how much ice there is, the researcher wants to study how oil/gas activities and climate change could affect the land. Underground ice is one of the most unpredictable and problema...


Sensitivities of high-latitude lakes to climatic & development disturbances
chercheur principal:
Année(s) de permis: 2008 2007 2006 2005
Résumé: The objective of this study is to develop a hydro-ecological model for small Arctic lakes to assess the vulnerability of their ecosystems to disturbances, such as climate change or water withdrawal. To quantify geochemical loadings to lakes, a model is being developed by monitoring lakes and their contributing catchment (surface water flow). A climate station will be set up at 2 - 6 sites to mo...


Active Layer Monitoring Network in the Mackenzie Valley
chercheur principal:
Année(s) de permis: 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990
Résumé: The active layer is the earth overlying permafrost that thaws from the surface and re-freezes each year, and it responds to climate change. Active layer thickness influences vegetation and soil conditions, potentially influencing hunting, forestry, etc. and it’s, thickness, texture and moisture content affects foundations. Changes in the active layer and thaw depth can contribute to slope instabil...


Environmental change in the 20th century, Mackenzie Delta region, Northwest Territories
chercheur principal:
Année(s) de permis: 2008 2007 2006 2005
Résumé: The impact of climate change on forest ecosystems in the Mackenzie Delta is being studied using dendrochronology. Earlier studies indicate a negative relationship between tree growth and summer temperatures. Summer temperatures may be exceeding the physiological threshold of northern trees or perhaps the trees are drought stressed. Manual and automatic dendrometers will be used to measure tree gro...


Enhancement of Permafrost Monitoring Network and Collection of Baseline Terrain Information in the Mackenzie Valley Corridor - Gwich'in Settlement Area
chercheur principal:
Année(s) de permis: 2006
Résumé: Gaps exist in the Mackenzie monitoring network in the permafrost zones north of Norman Wells, the Mackenzie Delta region and shorelines and coastlines. Enhancement of the network is essential to provide baseline information for developments such as pipelines, highways and power lines, and to assess the impact of such development and/or climate change on the environment. In this project, temperatur...


Examining Spatial and Temporal Variation of Ground Temperatures in the Mackenzie Delta, Northwest Territories
chercheur principal:
Année(s) de permis: 2007 2006
Résumé: The Mackenzie Delta is sensitive to both climate warming and human development. This project will contribute to a better understanding of ground temperatures in the Mackenzie Delta and will provide a baseline from which to assess future changes and cumulative impacts. Ground temperatures will be collected from the southern, central and outer delta regions. In the summer, about 30 boreholes (l...


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