21 record(s) found with the tag "climate change" (multi-year projects are grouped):
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Evaluating impacts of climate change on pre-development geochemical baselines through sediment micro analysis and cross evaluation with paleoclimate in northern environments
Principal Investigator: Miller, Clare B
Licenced Year(s): 2016
Summary: The objective of this research is to develop a greater understanding of the natural impacts of climate change on the loading, speciation and mobility of elements of concern in the subsurface in order to establish natural background concentrations for metal(loids) in pre-developed northern environments. In a region influenced by both accelerated climate change and wide- spread resource development,...


Carbon Cycling Linkages of Permafrost Systems [CYCLOPS]
Principal Investigator: Williams, Mathew
Licenced Year(s): 2014 2013 2012
Summary: The aim of the proposed project is to develop, parameterize and evaluate a detailed process-based model of vegetation soil- permafrost interactions using data collected through directed field campaigns in the discontinuous and sporadic permafrost zones of western Canada. The research team will (i) elucidate the role of plant biodiversity in controlling permafrost status in contrasting ecosystems w...


Controls on carbon and nutrient cycling in arctic tundra
Principal Investigator: Grogan, Paul
Licenced Year(s): 2017 2016 2015 2014 2013 2012 2011 2010 2009 2008
Summary: The goal of this research over the next five years is to substantially advance the understanding of how Canadian arctic tundra ecosystems function, and therefore how they are likely to be affected by perturbations such as climate change, resource development and extraction, and atmospheric pollution. Specifically, the research team will focus on the impacts on vegetation due to warmer summer tempe...


Soil microarthropod community responses to climate change
Principal Investigator: Turnbull, Matthew S
Licenced Year(s): 2013
Summary: The goal of the principal investigator is to assess the diversity of species and functional traits of microarthropods in the Canadian arctic. The Canada Tundra Ecosystem Carbon Study (CTECS) was selected as a research site because there have been running temperature, moisture, and nutrient addition treatments since 2004 with the goal of simulating climate change and predicting its effects on plant...


Environmental Studies Across Tree Line
Principal Investigator: Kokelj, Steven V
Licenced Year(s): 2012 2011 2010 2009 2008 2007 2006 2005
Summary: This licence is being issued for the scientific research application no. 978. The objectives of this research are to: 1) Monitor permafrost conditions in the Mackenzie Delta region; 2) examine freeze-back of the active layer and associated strength properties of freezing soil; 3) examine the influence of shrub removal on frozen ground and snow conditions at abandoned drilling-mud sumps; 4) inve...


Climate Change Impacts on Canadian Arctic Tundra Ecosystems: Interdisciplinary and Multi-scale Assessments
Principal Investigator: Coxson, Darwyn S
Licenced Year(s): 2008 2007
Summary: The objective of this research is to study how northern soils in close proximity (geospatially linked soils) cycle nitrogen and carbon and produce greenhouse gases. Describing these links will allow forecasting on how the soils respond to climate change. Three transects with 31 sampling locations will be set up. At each location a Time Domain Reflectometry (TDR) probe and thermocouple will be i...


Tundra-Atmosphere Carbon Exchange
Principal Investigator: Lafleur, Peter M
Licenced Year(s): 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2007 2005 2004
Summary: The aim of this project is to study how greenhouse gases are exchanged between tundra and atmosphere. This will be related to environmental variables, such as soil and weather, to understand how climate change will impact the land, and in turn how these impacts might influence the climate. Previous measurements indicate that tundras near the Daring Lake Research Station are a net sink for CO2 d...


Active layer moisture and carbon dynamics in the wetland-dominated zone of discontinuous permafrost
Principal Investigator: Schincariol, Robert A
Licenced Year(s): 2007
Summary: An improved understanding of the thaw and drainage processes, and exchanges of energy and moisture that control the flow of water in the vast wetland region of Canada is needed to improve weather and climate change predictions. Large-scale experiments on soils of the Central Mackenzie River basin will be used to elucidate moisture and carbon transport processes in the active layer. Laboratory base...


Examining Spatial and Temporal Variation of Ground Temperatures in the Mackenzie Delta, Northwest Territories
Principal Investigator: Kanigan, Julian
Licenced Year(s): 2007 2006
Summary: The Mackenzie Delta is sensitive to both climate warming and human development. This project will contribute to a better understanding of ground temperatures in the Mackenzie Delta and will provide a baseline from which to assess future changes and cumulative impacts. Ground temperatures will be collected from the southern, central and outer delta regions. In the summer, about 30 boreholes (l...


Spatial variability of active-layer thickness and surface characteristics
Principal Investigator: Nguyen, Thai-Nguyen
Licenced Year(s): 2006 2005
Summary: The objective of this research is to determine the spatial correlation between surface properties and active-layer thickness. Six sites have been established across the treeline, between Inuvik and Swimming Point. At each site, shallow temperature cables are installed in the active-layer and near-surface permafrost and air temperatures are monitored by data logger. During this project, the res...


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