16 record(s) found for principle investigator "Evans, Marlene" (multi-year projects are grouped):
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Productivity and mercury trends in Great Bear Lake
Principal Investigator: Evans, Marlene S.
Licenced Year(s): 2018
Summary: The objectives of this research project are to collect sediment cores from up to six sites in Great Bear Lake to investigate the temporal record of diatom and lake productivity and the deposition of mercury and other metals; to investigate spatial gradients in lake productivity as influenced by station depth, distance from shore, and river influences; and to continue to investigate mercury levels ...


Spatial and long-term trends in persistent organic contaminants and metals in lake trout and burbot from Great Slave Lake
Principal Investigator: Evans, Marlene S.
Licenced Year(s): 2018 2016
Summary: This study is continuing to investigate whether contaminant levels are changing in fish in Great Slave Lake which the research team have been studying since the early 1990s. The team plan to collect lake trout from the Hay River and Lutsel K’e areas. The team also plan to collect burbot from the Lutsel K’e and Fort Resolution areas of Great Slave Lake, and northern pike from the Fort Resolution ar...


Monitoring of mercury, flame retardants and other chemicals in lake trout and cisco from Great Bear Lake
Principal Investigator: Evans, Marlene S.
Licenced Year(s): 2016 2015 2014 2013
Summary: This study is designed to find out whether contaminant levels are changing in fish (lake trout and cisco) in Great Bear Lake. The research team require fall-caught fish for this study. Twenty whole lake trout and 20 whole cisco of a range of sizes are required from Great Bear Lake. The fish will be frozen immediately after capture and shipped to Environment Canada-Saskatoon. The fish will then ...


Sediment core studies in Great Slave Lake
Principal Investigator: Evans, Marlene S.
Licenced Year(s): 2014
Summary: The objectives of this research project are to collect a series of sediment cores in the West Basin of Great Slave Lake to investigate time trends in various chemicals of interest including mercury, mercury isotopes and persistent organic contaminants. In late-March 2014, the research team will collect sediment cores at 3-4 locations on Great Slave Lake (West Basin, offshore Slave River). An 8...


Spatial and long-term trends in persistent organic contaminants and metals in lake trout and burbot from the Northwest Territories
Principal Investigator: Evans, Marlene S.
Licenced Year(s): 2017 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005
Summary: The study is a continuation of work to investigate whether contaminant levels are changing in fish in the Northwest Territories with a focus on Great Slave Lake which we have been studying since the early 1990s. The plan is to collect lake trout from Great Slave Lake (Hay River area and Lutsel K’e area), and Great Bear Lake (Deline area). The researchers also plan to collect burbot from the Lutse...


Enhanced Investigations of the Factors affecting Long-term Contaminant Trends in Predatory Fish in Great Slave Lake, the Northwest Territories
Principal Investigator: Evans, Marlene S.
Licenced Year(s): 2010 2009
Summary: This licence is being issued for the scientific research application no. 991. The goal of this research is to conduct sediments coring and food web studies to better understand the factors affecting long-term contaminant trends in predatory fish in Great Slave Lake. For several years the researchers have been conducting studies to find out if contaminant levels are changing in lake trout and...


Biological Studies of Waters Along the Proposed Mackenzie Gas Project Pipeline Route - Inuvialuit Settlement Region
Principal Investigator: Evans, Marlene S.
Licenced Year(s): 2009 2008 2007 2006
Summary: This licence is being issued for the scientific research application no. 977. The objective of this study to examine lakes possibly affected by the proposed Mackenzie Gas Project pipeline, and lakes that can serve as future control/reference sites. The researchers will measure the following: nutrients and metals in lake water and sediments, lake water quality (DO, pH, conductivity, etc.), and ...


Biological Studies of Waters Along the Proposed Mackenzie Gas Project Pipeline Route - Deh Cho and South Slave Settlement Regions
Principal Investigator: Evans, Marlene S.
Licenced Year(s): 2008
Summary: This licence is issued for the scientific research application #861. This study is designed to examine streams possibly affected by the proposed Mackenzie Gas Project pipeline and streams that can serve as future control/reference sites. The researcher will measure the following: nutrients and metals in stream water, stream water quality (DO, pH, conductivity, etc.), and aquatic invertebrate ab...


Biological Studies of Waters Along the Proposed Mackenzie Gas Project Pipeline Route - Sahtu Settlement Region
Principal Investigator: Evans, Marlene S.
Licenced Year(s): 2008
Summary: The research will examine streams possibly affected by the proposed Mackenzie Gas Project pipeline, and streams that can serve as future control/reference sites. Measurements of stream nutrients, metals in stream water, water quality (DO, pH, conductivity, etc.), stream characteristics (flow, width, depth, etc.) and aquatic invertebrate abundance/species composition will be completed. Possible t...


Temporal trends and spatial variations in persistent organic pollutants and metals in sea-run char from the Canadian Arctic
Principal Investigator: Evans, Marlene S.
Licenced Year(s): 2007 2006
Summary: This is a study investigating the contaminant levels in sea-run Arctic char as they return from feeding in the ocean. The aim of this study is to provide communities with more information on the chemical levels in these fish. By making these chemical measurements in char and comparing them with chemical levels in marine mammals, there would be a possibility to demonstrate that char is a good food ...


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