Spatial and long-term trends in persistent organic contaminants and metals in lake trout and burbot from the Northwest Territories

Regions: Sahtu Settlement Area, South Slave Region

Tags: contaminants, biology, fish

Principal Investigator: Evans, Marlene (38)
Licence Number: 14782
Organization: Environment Canada
Licenced Year(s): 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004
Issued: Aug 09, 2010
Project Team: Derek Muir (Environment Canada), Jonathan Keating (Environment Canada), Rosy Bjornson (Deninu Kue FN), Ray Griffith (Lutsel K'e Dene FN), Shawn Buckley (Hay River), Collin Bayha (Deline RRC)

Objective(s): To investigate whether contaminant levels are changing in fish in the Northwest Territories with a focus on Great Slave Lake.

Project Description: 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 Lutsel K’e and Fort Resolution areas of Great Slave Lake, northern pike from the Fort Resolution area of Great Slave Lake, and cisco from the Deline area of Great Bear Lake.

Twenty burbot and 20 northern pike will be collected from the West Basin of Great Slave Lake (near Slave River) by community members from Fort Resolution during their normal subsistence fishing activities. Twenty lake trout will be collected from the West Basin of Great Slave Lake by the Hay River commercial fishery. Twenty lake trout and 20 burbot will be collected from the East Arm of Great Slave Lake by community members from Lutsel K’e during their normal subsistence fishing activities. Twenty lake trout and 20 cisco will be collected from the Keith Arm of Great Bear Lake by community members from Deline during their normal subsistence fishing activities. All fish will be captured using gill nets or by angling.

Community members (chosen by the local RRC) will be hired to collect fish for this study. Communities will be kept informed of the progress of the study. The researcher may visit the communities to discuss the study and present results from previous years.

The fieldwork for this study will be conducted from August 7, 2010 to December 31, 2010.