13 record(s) found with the tag "sediment quality" (multi-year projects are grouped):
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A multidisciplinary investigation of recovery in Yellowknife area lakes from 50 years of arsenic pollution: What are the factors inhibiting recovery and the biological consequences?
Principal Investigator: Palmer, Mike
Licenced Year(s): 2017
Summary: The overarching objectives of this research are two-fold: 1) to investigate watershed and within-lake abiotic processes affecting the recovery of mine-impacted lakes in the Yellowknife area, including storage and release of arsenic from soils, seasonal dynamics of arsenic export in runoff, and fluxes of arsenic to and from lake sediments; and 2)to investigate the toxicological consequences of ...


Diavik Aquatics Effects Monitoring Program
Principal Investigator: Wells, David A
Licenced Year(s): 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2005 2004 2003 2002 2001
Summary: The objective of this project is to revisit fixed sample stations at near-field, mid-field and far-field sites over the course of the year in an effort to determine any seasonal variation that may exist and confirm impact predictions. The AEMP Version 3.5 will consist of the following components; Traditional Ecological Knowledge, Dust Deposition; Effluent and Water Chemistry; Indicators of Eut...


Continuation of the Gordon Lake Assessment Project
Principal Investigator: Doucet, Michael
Licenced Year(s): 2016 2015
Summary: The primary objective of this research program is to determine the environmental and physical conditions of nine sites in the Gordon Lake region. This research will include the identification and quantification of environmental impacts in soil, sediment, surface water and groundwater. Samples of biota (e.g. Hyalella) may be collected at certain sites during the field program. The potential for...


Tundra Mine Remediation Risk Assessment
Principal Investigator: Corrin, Natasha
Licenced Year(s): 2016
Summary: The overall objective of the Tundra Mine risk assessment is to facilitate project closure by determining if there are any residual risks to human health or ecological receptors, including aquatic life, associated with the proposed tailings remediation. If any risks remain, the goal is to provide recommendations for risk management. In support of the risk assessment, and in order to collect baselin...


Characterization of arsenic species in lake sediments surrounding Giant Mine, NWT.
Principal Investigator: Van Den Berghe, Martin
Licenced Year(s): 2016 2015
Summary: The purpose of this study is to determine whether the arsenic present in regional lake sediments is of natural or anthropogenic origin, and whether these lakes act as a sink (capture) or a source (release) of arsenic in the overlying lake waters. By evaluating the relative stability of arsenic species in these different chemical media, the research team may establish the long term trends of arseni...


Marian Watershed Community-Based Aquatic Effects Monitoring Program
Principal Investigator: Garner, Kerri
Licenced Year(s): 2013
Summary: The Tlicho Lands Moratorium was lifted in June 2013, and development pressure is expected to increase on Tlicho Lands. As Tlicho Lands are in relatively pristine condition, the intent of this study is to begin to collect baseline data at sites prioritized by community members away from specific project footprints in order to analyze the cumulative impacts of development, climate change, and increa...


Great Slave Lake Area Mines: 2013 Sampling Program
Principal Investigator: Wiatzka, Gerd M
Licenced Year(s): 2013 2012 2011 2010
Summary: The objective of the 2013 Great Slave Lake Mines Sampling Program is to assist Aboriginal And Northern Development Canada-Contaminants And Remediation Directorate (AANDC-CARD) with its ongoing work to clean up abandoned mine sites across the Northwest Territories. The program aims to collect additional environmental data which will be used to confirm current site conditions and to assist with fina...


Giant Mine Phase 4 Environmental Effects Monitoring
Principal Investigator: Harris, Katherine M.
Licenced Year(s): 2012 2010
Summary: The objective of this study is to examine the health of two small-bodied fish species (Slimy Sculpin and Ninespine Stickleback) exposed to treated effluent from Giant Mine. Data collected during this study will be assessed to determine if there are treated effluent related effects. The study will be conducted within the exposure areas (Baker Creek and Yellowknife Bay) and the reference areas (Yell...


An investigation of arsenic speciation and toxicity in Baker Creek sediments from Giant Mine in the Northwest Territories, Canada
Principal Investigator: Nash, Tyler J
Licenced Year(s): 2012
Summary: The objective of this research project is to assess the sediment quality of Baker Creek. This will be achieved by analyzing factors influencing arsenic mobility from sediments to overlying water and assessing the toxicology of the sediments using exposure tests on indicator organisms. Core samples of Baker Creek sediments will be taken by the researchers using aluminum pipes driven into the gro...


Characterization of the reference condition of northern biota and assessment of potential changes due to mining
Principal Investigator: Dube, Monique G
Licenced Year(s): 2006
Summary: The objectives of this research are three-fold: 1) to determine the natural variability of benthic invertebrate and fish communities at sites free of human impact; 2) to determine any changes in these due to mining activity relevant to regional variability; and 3) to establish dose response relationships and critical thresholds for stressors including mine effluent, ammonia, a hydrocarbon indicato...


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