32 dossier(s) trouvé(s) portant l’étiquette "lake sediment" (les projets pluriannuels sont regroupés):
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Recent, rapid environmental change in the western Canadian Arctic
chercheur principal: Thienpont, Joshua
Année(s) de permis: 2023
Résumé: This licence has been issued for the scientific research application No.5573. To understand how landscape changes caused by climate warming are impacting aquatic ecosystems, particularly lakes and streams. These disturbances focus primarily on permafrost thaw, in the form of thaw slumps and landslides. The understanding derived will allow better understanding of how water quality and aquatic ha...


Diavik Frame Lake Aerator Program
chercheur principal: Sinclair, Sean
Année(s) de permis: 2024 2023 2022
Résumé: This licence has been issued for the scientific research application No.5302. There are two objectives: 1) determine if installing an aerator in Frame Lake, Yellowknife, NT, will increase dissolved oxygen levels in the lake such that fish can be reintroduced; and 2) if phase 1 proves successful, transfer fish into Frame Lake and monitor growth and reproduction to determine if the population is ...


Long-term hydrological dynamics of Canada’s largest watershed: Climate controls on water quantity of the Mackenzie River Basin
chercheur principal: Galloway, Jennifer
Année(s) de permis: 2020
Résumé: This licence has been issued for the scientific research application No.4705. The Mackenzie River Basin (MRB) is one of the largest cold-water, intact boreal ecosystems in the world and has unique Earth-system’s processes associated with sea ice formation, global circulation of deep ocean currents, carbon storage, and biogeochemical cycling. This unique global resource is also critical for supp...


Understanding the legacy loads c phosphorus in the Fiddler treatment system and the factors that influence phosphorus mobilization and bioavailability and risk to the Great SIave Lake ecosystem
chercheur principal: Goodwin, Brett
Année(s) de permis: 2020
Résumé: This licence has been issued for the scientific research application No.4741. The aim of this study is to understand the current concentrations of total phosphorus within sediments of the Fiddler's drainage area. Samples are being collected at 4 locations long the Fiddler's drainage and one location in Great Slave Lake at the outflow of Fiddler's into the lake. These locations have been chosen ...


Organic carbon cycle in the Mackenzie delta lakes
chercheur principal: Lattaud, Julie
Année(s) de permis: 2020
Résumé: This licence has been issued for the scientific research application No.4698. 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...


Climate change impacts on lake ecosystems of the western Canadian Arctic
chercheur principal: Korosi, Jennifer B
Année(s) de permis: 2019
Résumé: The objectives of this research is to: 1) determine if thaw slumping results in the loss of a large-bodied zooplankton species (Daphnia) from lakes; and 2) measure polychlorinated biphenyl concentrations in lake sediments near the Distant Early Warning Line site in Tuktoyaktuk, to assess whether legacy contamination is still evident. The research team will be collecting sediment cores from ...


Remote Sensing Water Indicator Monitoring for the Mackenzie and Slave Rivers, and Great Slave Lake
chercheur principal: Chamberland, Joseph
Année(s) de permis: 2019 2018
Résumé: The results of this project will add information that will help northern communities, scientists and decision makers answer questions about water quality and changes to rivers and lakes within the NWT. The information generated from this project will provide both baseline and long term water indicator measures for the Slave River, Great Slave Lake (GSL), and the Mackenzie River, which are three of...


Water Ecosystem Monitoring using Earth Observations
chercheur principal: Chamberland, Joseph
Année(s) de permis: 2016 2015
Résumé: The research project Water Ecosystems Monitoring using Earth Observation aims to define an Earth Observation (EO) driven monitoring program to provide information towards monitoring environmental indicators of northern ecosystem health. Once the project is done information on water indicators including water temperature, suspended sediment concentrations, water levels, and ice quality and will be ...


Climate change reconstructed from lake sediments
chercheur principal: Lamoureux, Scott F
Année(s) de permis: 2007
Résumé: The goal of this project is to collect sediment cores and water samples from a lake, to be analysed as an indication of past snow melt and stream flow in the area. Two personnel will camp at the site for 5 days in late May. In late June, early July and/or late August they will return by helicopter from a neighboring camp in Nunavut for two or three visits, 3-4 hours each visit. A skidoo will be...


Testing for Pre-Holocene Lacustrine Sediments in the Canadian High Arctic
chercheur principal: Smith, Rod
Année(s) de permis: 1994
Résumé: This study will test the hypothesis that pre-Holocene (older than 10, 000 years) lake sedimentary records exist within modern lake basins found on Ellesmere Island. Recent research has not been able to penetrate beyond a layer of course sand and pebbles. Recent technological improvements in the coring apparatus should allow the full penetration of this material, as well as the hypothesized older...


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