20 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 fish from the Northwest Territories
Principal Investigator: Evans, Marlene S
Licenced Year(s): 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004
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 ...


The biology and ecology of sympatric polymorphic lake trout, Salvelinus namaycush, in Great Bear Lake, NorthwestTerritories.
Principal Investigator: chavarie, Louise
Licenced Year(s): 2011
Summary: The objectives of this research project are: 1) to document traditional and local knowledge of the existence and ecology (i.e., distribution, movement, habitat, diet and morphology) of different lake trout morphotypes in Great Bear Lake, NWT; 2) to gain better understanding of lake trout ecology by working with traditional knowledge, local knowledge, and scientific information; and 3) to make t...


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...


Assessment of lake trout stocks in Great Bear Lake
Principal Investigator: Howland, Kimberly
Licenced Year(s): 2007 2006 2005
Summary: The objectives of this study are to: 1) gather baseline data on size and age structure, fecundity (egg number per female), growth and mortality of Dease, Smith, McVicar, McTavish, Keith arm lake trout. A different arm will be sampled each year over a 5 year time period. 2) To determine if lake trout are genetically distinct between basins. 3) To determine the extent of movements (if any) by lake t...


Shoal Habitat Utilization Study
Principal Investigator: Morrison, Scott
Licenced Year(s): 2007 2006 2005 2004
Summary: Consistent with the DFO authorization, the major objectives of the study are to provide annual documentation of shoal habitat use by Lake Trout in the vicinity of the mine site, and to ground truth hydroacoustic equipment. Study locations for 2005 are as per 2004. Hydroacoustic surveys are to be conducted during the early morning or evening hours. The survey is conducted at the same time each...


Continued Population Assessment of Harvested Fish Species in the Travaillant Lake System, Northwest Territories
Principal Investigator: Howard, Kimberly
Licenced Year(s): 2005
Summary: The main objectives of this study are to determine baseline population status and develop reliable indicators of population abundance and mortality rates of key harvested fish species (lake whitefish and broad whitefish) in the Travaillant Lake system and to identify and determine the relative abundance and species composition of other species within the lake system. Field crews will be transp...


Morphological Diversity of Lake Trout: Differentiation Between Deep and Shallow Forms
Principal Investigator: Eshenroder, Randy
Licenced Year(s): 2005
Summary: The objective of this study is to determine whether a deep-water type of lake trout resembling the “humper” of Lake Superior lives on offshore reefs in Great Slave Lake, as they do in Lake Superior. The researchers have also found humper-like trout in Great Bear Lake and in Lake Mistassini, Quebec. In Great Slave Lake, the researchers intend to target offshore reefs surrounded by deep water (deepe...


Seasonal movements of lake trout, lake whitefish and northern pike in a small northern Shield lake.
Principal Investigator: Dick, Terry A.
Licenced Year(s): 2005 2004
Summary: The objective of this research is to study what lake trout, whitefish and pike eat and their movements in a small northern Shield lake (Chitty Lake). Transportation of personnel and equipment into and out of Chitty Lake will be by single engine float plane (Air Tindi). During this study, the researchers will use standardized gill nets, a backpack electroshocker, a seine net, VEMCO acoustic tra...


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