59 record(s) found with the tag "mercury" (multi-year projects are grouped):
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Spatial and long-term trends in persistent organic contaminants and metals in fish from the Northwest Territories
Principal Investigator: Evans, Marlene S.
Licensed Year(s): 2024 2020 2019
Summary: This licence has been issued for the scientific research application No. 6000. The study is continuing to investigate whether contaminant (mercury, other metals, persistent organic contaminants) levels are changing in fish in the Northwest Territories with a focus on Great Slave Lake which the team have been studying since the early 1990s. The plan is to arrange collections of lake trout from t...


Temporal trend studies of trace metals and halogenated organic contaminants (HOCs) including new and emerging persistent compounds, in Mackenzie River burbot, Fort Good Hope, NWT (2024-2025)
Principal Investigator: Stern, Gary
Licensed Year(s): 2024
Summary: This licence has been issued for the scientific research application No. 5906. Short-term goals are to determine if burbot contaminant concentrations: • Are above or below Health Canada guidelines (i.e. <0.5 ppm mercury per gram fish). Annual data will be provided to NWT Health and Social Services for evaluation; • Are associated with dietary indicators, i.e. stable isotope ratio data (15N, 1...


Impacts of wildfire on runoff response and downstream water chemistry in a region with rapid permafrost loss
Principal Investigator: Olefeldt, David
Licensed Year(s): 2024
Summary: This licence has been issued for the scientific research application No. 5892. Objective summary: To assess the effect of wildfires on changes in water quality in the Dehcho and South Slave region, which are affected by runoff from peatlands (containing e.g., organics, nutrients, and mercury/methylmercury), which are already experiencing increased permafrost thaw due to climate change. Synop...


Monitoring of mercury, flame retardants and other chemicals in lake trout and cisco from Great Bear Lake
Principal Investigator: Evans, Marlene S.
Licensed Year(s): 2023 2021 2020
Summary: This licence has been issued for the scientific research application No. 5696. This main objective of this research project is to gain a better understanding of whether or not contaminant levels are changing in fish (lake trout and cisco) in Great Bear Lake. The research team is particularly interested in observing mercury presence. This study complements ongoing fish population studies being c...


Dragonfly mercury monitoring in the Northwest Territories
Principal Investigator: Chetelat, John
Licensed Year(s): 2024 2023
Summary: This licence has been issued for the scientific research application No. 5648. The main objective of this project is to measure mercury in dragonfly larvae from a variety of aquatic ecosystems in the Yellowknife area. This information will be collected as part of a Canada-wide project to evaluate geographic and temporal patterns of mercury bioaccumulation. The first priority will be to inve...


Understanding the cumulative impacts of beaver activity on stream health in the Inuvialuit Settlement Region
Principal Investigator: Musetta-Lambert, Jordan
Licensed Year(s): 2024 2023
Summary: This licence has been issued for the scientific research application No. 5641. The broad research question is: How will beaver activity in the tundra impact aquatic ecosystem health? This research project will answer this broad question by addressing the following specific objectives and questions: Generate an understanding of beaver activity impacts on aquatic food webs in tundra streams. Que...


Using computer models to understand what influences mercury levels in the Beaufort Sea Shelf food web
Principal Investigator: Giang, Amanda
Licensed Year(s): 2024 2023
Summary: This licence has been issued for the scientific research application No.5518. The objectives of this project are to develop and apply a computer model of mercury bioaccumulation in the Beaufort Sea Shelf food web; to estimate the effects of selected environmental changes on historical Beaufort Sea beluga MeHg concentrations from (1970-2010s); and, to investigate potential future trajectories of...


Studies of greenhouse gas release and environmental processes associated with thawing permafrost in the Inuvialuit Settlement Region
Principal Investigator: Morse, Peter D
Licensed Year(s): 2023 2022 2021
Summary: This licence has been issued for the scientific research application No.5500. The goals of this multi-year-long project are to assess greenhouse gas (methane and carbon dioxide) release from warming permafrost and tundra lakes in the Inuvialuit Settlement Region (ISR) and to study associated carbon dynamics and microbiological processes, including the release of mercury to the environment. ...


Murky waters: Impacts of disturbances on the mobilization and downstream delivery of mercury and methylmercury
Principal Investigator: Olefeldt, David
Licensed Year(s): 2023 2022 2021
Summary: This licence has been issued for the scientific research application No.5448. This project proposes to monitor wetlands, streams, rivers, and lakes in the Dehcho region, with a focus on understanding current and future trends in aquatic mercury and methylmercury. The region has vast stores of mercury accumulated in organic wetland soils, and there is a risk that disturbances such as permafrost ...


Further Examination of the Bio- Magnification of Mercury within Fish Species and watersheds of the Deh Cho and Their Varying Levels Among Lakes
Principal Investigator: Low, Mike
Licensed Year(s): 2024 2023 2021 2019
Summary: This licence has been issued for the scientific research application No.5348. The objectives of this research project are: 1) to determine why fish mercury levels vary among lakes in the Dehcho region; 2) to identify best predictors of fish mercury levels; 3) to determine with fish have the lowest levels of mercury and the highest levels of nutrients; and, 4) to collect data on parameters that ...


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