13 Dossier(s) trouvé(s) à l’emplacement "Région désignée des Gwich'in" (les projets pluriannuels sont regroupés):
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Watershed-scale geomorphic response to climate change in the Aklavik Range, NWT
chercheur principal:
Année(s) de permis: 2025 2024 2023 2022
Résumé: This licence has been issued for the scientific research application No.5411. or this latest phase of research, the research team propose to integrate field observations, geochemical techniques, and historical remote sensing analysis to quantify the rates and processes by which sediment is generated from bedrock and transported downslope via hillslope and river processes under a changing climat...


Organic carbon cycle in the Mackenzie delta lakes
chercheur principal:
Année(s) de permis: 2022
Résumé: This licence has been issued for the scientific research application No.5187. The project will study the dynamics of deltaic lake ecosystems over the past century through the application of recently developed molecular (lipid biomarker) and isotopic (radiocarbon and stable isotopes) proxies to lake sedimentary records. This will unravel the impact of old carbon input into aquatic ecosystems. Ra...


Nitrogen sources for Arctic freshwaters (NitroFresh)
chercheur principal:
Année(s) de permis: 2021
Résumé: This licence has been issued for the scientific research application No.5034. The main aim of Nitrofresh is to assess the nitrogen (N) sources for streams and the linkages between terrestrial and freshwater ecosystems across different regions with continuous permafrost in High Arctic. In particular, the research team have three objectives: 1) to quantify and characterize N pools along the ripar...


Impact of ferry landings on water quality and traditional fish harvesting in the Mackenzie and Peel Rivers
chercheur principal:
Année(s) de permis: 2019 2018
Résumé: Fishing is an important part of the Gwich’in way of life. Concerns in the Gwich’in communities of Fort McPherson and Tsiigehtchic have arisen with regards to the use of granular material in ferry landings. Anthropogenic sediment from ferry landings has the potential to alter river ecology downstream thus impacting valuable fish habitat. This objectives of this project are to determine the impa...


Examining the impacts of climate and environmental change on aquatic and terrestrial ecosystems of the Mackenzie region, NWT
chercheur principal:
Année(s) de permis: 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009
Résumé: This research will continue the long term objective of documenting and understanding the impacts of recent climate change on northern terrestrial and aquatic ecosystems. The short term objectives of my research for 2018 are: 1) to investigate the impacts of permafrost degradation and subsequent thaw slumping on freshwater ecosystems; 2) to examine the limnological implications of drained lakes on ...


Timing of glaciation and uplift of the Richardson Mountains and connection to Old Crow basin, northern Yukon
chercheur principal:
Année(s) de permis: 2010
Résumé: The objectives of this study are to observe and document sediments exposed along the upper Rat River, also to collect samples of sediments for potential radiocarbon dating. Researchers will fly into area via helicopter from Old Crow. Where possible the helicopter will land adjacent to river escarpments for access to large river bars or wide banks. Researchers will climb up banks to observe sedi...


Timing and genesis of the Eagle meltwater channel in northern Yukon: Implications for the northwestern Laurentide margin
chercheur principal:
Année(s) de permis: 2008
Résumé: The objective of this study is to observe and document sediments exposed along the upper Rat River, and collect samples of sediments for potential radiocarbon dating. Researchers will fly into area via helicopter from Old Crow. Where possible (large river bars or wide banks), helicopter will land adjacent to river escarpments for up to 2 hours. Researchers will climb up banks to observe sedimen...


Regional Geochemistry Survey, Mackenzie Mountains NWT
chercheur principal:
Année(s) de permis: 2007
Résumé: The objective of this study is to collect stream silts on first order streams on a regional basis at a density of one sample every 13 Km2 across the target area. Heavy mineral concentrate samples will be collected at a density of one sample every 25 km2. The samples will be dried, labeled and shipped to various laboratories for cataloging and analysis. A team of 2 field workers would use a heli...


Geomorphological and hydrological research on valley formation in Arctic and subarctic environments
chercheur principal:
Année(s) de permis: 2000 1994 1992 1990
Résumé: The researcher will measure discharge, run-off velocity, sediment load, dissolved load and microclimate parameters (air and ground temperatures, relative humidity, evaporation, precipitation and radiation) in small valleys of James Creek. They drive to the location in a 3/4 ton truck which is parked in an abandoned quarry near the road. They walk to their data collection sites. The observations...


Palynology (Mackenzie Valley Global Change), study of the climatic change along the Mackenzie River and on the Arctic Islands.
chercheur principal:
Année(s) de permis: 1995 1993 1992
Résumé: The researcher will sample a variety of lakes (some 50 lakes altogether) around Inuvik. A hole, approximately 8 inches in diameter, will be bored through the ice in each lake. Using an Ekman sampler, lake bottom sediments (mud) will be collected for analysis in the lab. The researchers will get to each of the lakes bt helicopter and spend approximately 15 to 20 minutes at each lake....


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