62 dossier(s) trouvé(s) portant l’étiquette "sediment quality" (les projets pluriannuels sont regroupés):
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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?
chercheur principal: Palmer, Mike
Année(s) de permis: 2019 2018 2017
Résumé: 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
chercheur principal: Wells, David A
Année(s) de permis: 2024 2023 2022 2021 2019 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2005 2004 2003 2002 2001
Résumé: 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 Aquatic Effects Monitoring Program (AEMP) Version 3.5 will consist of the following components; Traditional Ecological Knowledge, Dust Deposition; Effluent an...


Marine Arctic Ecosystem Study (MARES)
chercheur principal: Wiese, Francis
Année(s) de permis: 2018 2017 2016
Résumé: BOEM issued a request that Stantec Inc. plan and execute a program during the 2016 field season to accomplish t the following objectives: 1) to collect physical, biological and chemical observations in the Eastern Beaufort Sea from moored and moving platforms; 2) to describe and analyze physical, biological and chemical observations acquired from the moving platforms; and, 3) to simultaneousl...


Using the past to inform the future: A paleoecological perspective of the impacts of drought and fire on lakes, permafrost and forests
chercheur principal: Pisaric, Michael FJ
Année(s) de permis: 2019 2018 2017 2016
Résumé: 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...


2017 Tarsuit Caissons Removal Program
chercheur principal: Clarke, Kim P
Année(s) de permis: 2017
Résumé: The objective of this project is to refloat and remove the Tarsuit Caissons from Lease Area 117/D11-3-7. Following their removal, the research team will conduct the following evaluation of the affected site and adjacent area: 1) Side Scan Survey 2) Macro invertebrate Survey A sidescan/multibeam unit (Edgetech 6205, or similar) will be pole mounted on the bathymetry vessel and data will be col...


Studies of methane release from lakes in the Mackenzie Delta and on Richards Island
chercheur principal: Orcutt, Beth N
Année(s) de permis: 2017 2016 2015
Résumé: The focus of this one-year-long project is to collect an additional annual record of methane release from nine different lakes in the Mackenzie Delta and Richards Island area, with a focus on capturing a full ice in/ice out cycle, to determine how much methane is released from lakes under different conditions and how microorganisms increase or decrease methane release. This annual record will allo...


Holocene Glacier Fluctuations in Nahanni National Park Reserve, Northwest Territories, Canada
chercheur principal: Menounos, Brian p
Année(s) de permis: 2017 2016
Résumé: The objective of the study is to date the formation of terminal moraines fronting Brintnell Glacier, and analyze the glacigenic signature within the sediments of Glacier Lake in order to develop a robust chronology of glacier change on the Brintnell-Bologna Icefield. This decade to century scale chronology will be compared to regional-to-hemispheric climate proxies to evaluate the climate sensitiv...


Continuation of the Gordon Lake Assessment Project
chercheur principal: Doucet, Michael
Année(s) de permis: 2016 2015
Résumé: 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
chercheur principal: Corrin, Natasha
Année(s) de permis: 2016
Résumé: 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...


The influence of forest fires on metal deposition to lakes and peatlands in the North Slave Region, NWT
chercheur principal: Chetelat, John
Année(s) de permis: 2016
Résumé: The research team will use natural environmental archives (lake sediment and peat cores) to characterize the forest fire history in the study region and test the relationship between fire events and metal accumulation over recent centuries. Study sites will be selected along a gradient of recent forest fire activity with some study sites located in areas of the latest burns (2014-15) to examine th...


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