158 record(s) found with the tag "sediment" (multi-year projects are grouped):
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Prospecting for Earth’s oldest rocks using geochemical signatures of Pleistocene glacial sediments
Principal Investigator: Bilak, Grayson S
Licenced Year(s): 2017
Summary: For this research the Principal Investigator (PI) propses an innovative combination of quaternary geology, isotope geochemistry, and Precambrian geochronology that will identity previously unmapped outcrops of ancient continental crust in the Acasta Gneiss Complex (AGC). An age range and bedrock composition will be generated for the research area and used to help further the understanding of the p...


Erosion of old organic carbon in the Mackenzie River Basin
Principal Investigator: Hilton, Robert G
Licenced Year(s): 2017 2013 2011 2010 2009
Summary: The objective of this research is to better quantify the carbon source, age and fate in one of the largest rivers draining the high latitudes. The research team will sample river sediments and waters to establish temporal variability in OC source and age. The team will target high and falling flow (in June) when most sediment and water are exported. The research team will directly measure velo...


Examining the impacts of climate and environmental change on aquatic and terrestrial ecosystems of the Mackenzie region, NWT
Principal Investigator: Pisaric, Michael FJ
Licenced Year(s): 2017 2016 2015 2014 2013 2012 2011 2010 2009
Summary: This research will continue the long term objective of documenting and understanding the impacts of recent climate change on northern terrestrial and aquatic ecosystems. The short term objectives of this research are: 1) to investigate the impacts of permafrost degradation and subsequent thaw slumping on freshwater ecosystems; 2) to examine the limnological implications of drained lakes on aquatic...


Using the past to inform the future: A paleoecological perspective of the impacts of drought and fire on lakes, permafrost and forests
Principal Investigator: Pisaric, Michael FJ
Licenced Year(s): 2017 2016
Summary: The objectives of this research are to examine the frequency and severity of past wildfire and drought (drought-like) conditions in the southern Northwest Territories. Specifically, the research team will examine the following questions: 1) how frequent and severe have fires been in the past; 2) are fires becoming more frequent/severe due to the impacts of climate change; 3) what impact does wildf...


Long term and current variability in sources and sinks of carbon and nitrogen in terrestrial and aquatic ecosystems underlain by discontinuous and continuous permafrost
Principal Investigator: English, Michael C
Licenced Year(s): 2014
Summary: The objectives of this research project are: 1. to extract sediment cores from three different regions of the Northwest Territories namely: the low arctic tundra (continuous permafrost-Daring Lake), Taiga Shield northern boreal (widespread discontinuous permafrost-Wekweeti), and Taiga Shield boreal (sporadic discontinuous permafrost-Baker Creek Watershed) which provide the research team with a re...


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...


Phase III ESA & RAP for Stark Lake Exploration Site, NT
Principal Investigator: Barnes, Keith G
Licenced Year(s): 2013
Summary: The objectives of this year’s work program are to: 1. Complete a Phase III Environmental Site Assessment of the site, to further assess and delineate areas of concern on the site to support Remedial Action Plan development; 2. Complete a hazard assessment of the Stark Lake Site to support the development of a health and safety plan, and ensure that the Crown’s due diligence in regards to ...


2013 Yellowknife Bay Baseline Data Collection for Aquatics and Fisheries
Principal Investigator: Kramer, Tara
Licenced Year(s): 2013
Summary: The primary objective of this research program is to collect baseline data on: 1) water chemistry, limnologic profiles, sediments, plankton, benthic invertebrates and aquatic habitat; and, 2) fish presence and collection of fish tissue for metal analysis. Aquatics: The Aquatics field program will be conducted in the spring of 2013. During the field program, the following samples will be coll...


Effects of Athabasca and Slave River Sediments affected by oil sands operations on embryonic fish
Principal Investigator: Jones, Paul D
Licenced Year(s): 2013 2012 2011
Summary: The research team will quantify the effects of exposure of embryonic fish to contaminants released from oilsands operations that may be present in the sediments. The research team will drill a hole in the ice, no more than 12 inches in diameter, and use sediment collection equipment to collect a few centimeters of sediment from the river bed. Local communities will have an opportunity to as...


Landscape scale flooding in the Great Slave Lake Plain
Principal Investigator: Armstrong, Terry
Licenced Year(s): 2014 2013 2012 2011 2010
Summary: The objectives of this project are to draw together multiple sources of information so that the research team may (1) examine change in lake area in this ecoregion, (2) assess amount of meadow habitat lost to rising water levels in core bison range, (3) investigate whether recent changes are part of a longer-term cycle and evaluate the causes of this change, (4) determine a way to document and int...


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