55 record(s) found with the tag "physical sciences" (multi-year projects are grouped):
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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): 2018 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 my research for 2018 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 ...


Biogeochemical controls on the structure and functioning of low arctic ecosystems
Principal Investigator: Grogan, Paul
Licenced Year(s): 2018 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008
Summary: The Arctic is undoubtedly experiencing several major perturbations including climate change, and resource development and extraction (e.g. mining and pipeline construction) that are very likely to substantially affect the structure and functioning of its ecosystems. As a terrestrial ecosystem ecologist, the long-term goal of this research over the next 15-20 years is to substantially advance the u...


Upper Cretaceous paleoenvironmental reconstruction of the gateway between the Boreal and Western Interior Seas: The Boundary Creek and Smoking Hills Formations, NWT
Principal Investigator: Schroder-Adams, Claudia J.
Licenced Year(s): 2012
Summary: The main objective of this research project is to improve the stratigraphic framework of the Cretaceous Western Interior Sea region and the understanding of the paleoenvironmental setting of a Cretaceous aged oceanographic gateway between the Boreal Sea and the Western Interior Sea that flooded large parts of North America. The proposed localities have the type section of the two targeted forma...


Landscape scale flooding in the Great Slave Lake Plain
Principal Investigator: Armstrong, Terry
Licenced Year(s): 2014 2013 2012 2011 2010
Summary: The objectives in 2011 are to draw together multiple sources of information to: (1) examine change in lake area in this ecoregion, (2) quantify the type and amount of habitat loss or modification, (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 integrate local and traditional knowledge of physical an...


Paleoclimatological assessment of the central Northwest Territories: implications for the long-term viability of the Tibbitt to Contwoyto winter ice road
Principal Investigator: Patterson, R. Tim
Licenced Year(s): 2012 2011 2010
Summary: Through analysis of sediment/water interface samples, freeze cores, and dendrochronology, the researchers intend to: i) develop a comprehensive sub-decadal to centennial-scale late Holocene climatic history along a 2° latitudinal gradient in the central NT, variously based on microfossils (pollen, diatoms, thecamoebians, chironomids), sedimentologic, cyclostratigraphic, stable isotopic, ...


Recent changes in carbon source-sink relationships and greenhouse gas emissions in forest and peatland ecosystems along the Mackenzie Valley region of Canada
Principal Investigator: Bhatti, Jagtar
Licenced Year(s): 2011 2010 2009 2008 2007
Summary: The objectives of this research project are to: 1. map and assess changes in the distribution and composition of forest and peatland ecosystems due to climate changes; 2. estimate carbon storage (and variation) in boreal to arctic ecoregions of the Mackenzie valley; and 3. assess interannual and seasonal variations and key processes controlling carbon dioxide (CO2) and methane (CH4) dynamics. ...


Quaternary History of the Summer Island area, Tuktoyaktuk Coastlands
Principal Investigator: Murton, Julian B
Licenced Year(s): 2008
Summary: The objective this geological research is to reconstruct climate and environmental history of Richards Island before the last ice age using sediment and peat samples. Fieldwork around the Mason Bay camp will be carried out on foot and a small boat along the coastal bluffs in Summer Island, Richards Island and Hadwen Island. Fieldwork will be carried out by clearing slumped sand from coastal bluff...


Environmental Change in the Western Canadian Arctic Islands
Principal Investigator: England, John H
Licenced Year(s): 2012 2010 2009 2008 2007 2006 2005 2004 2003 2002
Summary: This licence was issued for the application no. 822. The objective of this research is to determine how the environment of Banks Island has evolved during the past several hundred thousand years to present, especially whether Banks Island served as a biological refugia during previous glaciations. The researchers aim to understand and reconstruct the extent and dynamics of past glaciers, past c...


Environmental change in the 20th century, Mackenzie Delta region, Northwest Territories
Principal Investigator: Pisaric, Michael FJ
Licenced Year(s): 2008 2007 2006 2005
Summary: The objective of this research is to study the impacts of climate change on boreal and aquatic ecosystems in the Mackenzie Delta region. By doing so, the researchers hope to gain a better understanding of the effects of long-term climate change on these ecosystems. Their study will utilize dendrochronological and paleolimnological methods to examine spruce forests and lake sites situated in the in...


Variability and Change in the Canadian Cryosphere - Tundra Information Transferability Study
Principal Investigator: Walker, Anne E
Licenced Year(s): 2008
Summary: Environment Canada plans to measure snow depth, snow density and snow water equivalent (water storage in the snowpack), as well as lake ice thickness and structure for comparison with microwave radiometer measurements. Researchers have started to use microwave data from satellites for assessing snow water equivalent (SWE). Field tests to investigate the use of microwave sensors indicate that SW...


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