8 record(s) found with the tag "lake trout" (multi-year projects are grouped):
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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 team have been studying since the early 1990s. The research team will collect lake trout from the Hay River and Lutsel K’e areas. The team will 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 ...


Spatial and long-term trends in persistent organic contaminants and metals in fish 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 objectives of this project are to: 1) continue to investigate trends in mercury, metals and persistent organic contaminants (POCs) in lake trout harvested from two locations (West Basin near Hay River, East Arm at Lutsel K’e) and burbot harvested from one location (West Basin at Fort Resolution) in Great Slave Lake in 2017 to further extend the long-term (1993-2015: POCs, 1993-2016 mercury a...


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 and Climate Change Canada (ECCC)-Sask...


Lake trout diversity in Great Bear Lake: do deep-water forms exist?
Principal Investigator: Muir, Andrew M
Licenced Year(s): 2012 2010
Summary: The objective of this project is to sample known and newly discovered deepwater (>50 m) habitats southwest of the Narakay Islands and within the McTavish Arm to determine if a deepwater humper or siscowet lake trout form occurs. Data on the occurrence and characteristics of deepwater lake trout forms from Great Bear Lake will fill in gaps in this North American lake trout dataset. Currently it is ...


Morphological Diversity in Lake Trout within Large North American Lakes: Effects of Lake Physiography on Differentiation between Deep and Shallow Forms
Principal Investigator: Eschenroder, Randy
Licenced Year(s): 2002
Summary: The immediate objective of the research is to determine whether unique morphotypes of lake trout exist in Great Slave Lake. The long term objective is to determine the distribution and ecology of unique morphotypes in North America. By studying Great Sla...


Contaminants study on fish of the Contwoyto Lake area
Principal Investigator: Clayton, Terry
Licenced Year(s): 1993
Summary: The researcher has been commissioned by Echo Bay Mines Ltd. to conduct an assessment of heavy metal contaminants in the fish of Contwoyto and Concession Lakes. Most of the study will concentrate on contaminants in lake trout but analyses will be performed on the tissues of other fish species that are caught. The study will be based out of the Lupin Mine site at Contwoyto Lake....


Atmospheric contaminant inputs to and impacts on Lac Belot
Principal Investigator: Lockhart, W.L.
Licenced Year(s): 1993 1992
Summary: As part of this ongoing study, sediment samples will be taken fron the deepest locations of Lac Belot and Colville Lake. These samples will be analyzed for the presence of contaminants and dated. These analyses will allow the researcher to construct histories of the input of contaminants to these lakes. In addition, lake trout, whitefish and burbot will be collected to determine what contaminan...


Interspecific Hybridization between Arctic Char and Lake Trout
Principal Investigator: Wilson, Chris C.
Licenced Year(s): 1993 1992 1991 1990
Summary: The researchers will collect approximately 50 small fish per lake in an attempt to determine where and when hybrid offspring are selectively weeded out. The majority of fish caught will be fin-clipped and released. Any hybrids collected would be kept, as well as a representative sample of fish from each parent species....


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