21 record(s) found with the tag "peatlands" (multi-year projects are grouped):
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The frontline of permafrost thaw: a transect of eddy covariance towers across the southern Taiga Plains to better understand changing regional carbon and water budgets
Principal Investigator: Sonnentag, Oliver
Licenced Year(s): 2017 2016 2015
Summary: Through this project the research team will address the following objectives: 1) determine the net effect of permafrost thawing-induced biophysical and biogeochemical feedbacks to the climate system; 2) determine how these two types of feedback differ between the sporadic and discontinuous permafrost zones; 3) determine if s the reported decrease (increase) in net carbon dioxide (methane) exchange...


The influence of forest fires on metal deposition to lakes and peatlands in the North Slave Region, NWT
Principal Investigator: Chetelat, John
Licenced Year(s): 2016
Summary: 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...


Bryophytes regeneration in burned peatlands in Northwest Territories
Principal Investigator: Guêné-Nanchen, Mélina
Licenced Year(s): 2016
Summary: The objective of this project is to evaluate bryophytes regeneration in Northwest Territories burned peatlands to improve the understanding of the structure of mosses ecosystems. This new knowledge should improve the restoration method of disturbed peatlands where the reintroduction and regeneration mosses are problematic. Several sites will be studied in order to have a range of plant communit...


Influence of changing active-layer thickness on permafrost peatland trace gas exchanges and carbon balance
Principal Investigator: Sonnentag, Oliver
Licenced Year(s): 2016 2015 2014 2013
Summary: This project will address the following questions: 1) What is the net effect of permafrost thawing-induced biophysical and biogeochemical feedbacks to the climate system? 2) How do these two types of feedback differ between the discontinuous and continuous permafrost zones? 3) Is the reported decrease (increase) in net CO2 (CH4) exchange based on plot- (<1m2) and ecosystem-scale (~1km2) flux m...


Planning and Collection of Data on Boreal Wildfire Effects: Studies of broad-scale 2014 Wildfires in NWT, Canada
Principal Investigator: Bourgeau-Chavez, Laura L
Licenced Year(s): 2016 2015
Summary: The goal of this project is to identify and collect remote sensing and field data to support the science necessary to investigate the impacts and consequences of the 2014 fires in Northwest Territories, Canada and to better understand the vulnerability of the Carbon-rich boreal peatlands to burning. Field crews will navigate to pre-selected sample locations and collect at each location: 1)site...


Effects of fire on peatland permafrost stability and carbon cycling
Principal Investigator: Olefeldt, David
Licenced Year(s): 2016 2015
Summary: The project team intend to study carbon cycling in peatland catchments, in order to determine whether the interactions between wildfire and permafrost thaw causes increased release of greenhouse gases from peatlands and aquatic ecosystems to the atmosphere, and thus cause amplified climate change. Given the overall objective of the project, the research team intend to address 5 research questi...


Impact of permafrost thaw and wildfire on carbon storage in peatlands
Principal Investigator: Turetsky, Merritt R.
Licenced Year(s): 2014 2013
Summary: The research team aims to study if permafrost thaw in peatlands is linked to rapid losses of organic matter. The field work will focus on extracting a number of cores from different peatland sites that differ in their permafrost status and in fire history. By examining the peat layers in the core the team will be able to reconstruct the history of the site and to link changes in permafrost conditi...


Effects of wildfire on biomass combustion in boreal peatlands and forests
Principal Investigator: Turetsky, Merritt R.
Licenced Year(s): 2011
Summary: The objective is to quantify the amount of fuel combustion and carbon losses during wildfires in boreal conifer forests and peatlands. These data will allow us to quantify climatic and weather controls on the severity of biomass burning. Boreal forests and peatlands store a large amount of carbon in vegetation and soils. Climate change is predicted to increase summer drought, which could mak...


Ecohydrologic Impacts of Wildfire on Peatlands
Principal Investigator: Waddington, J.M.
Licenced Year(s): 2010 2009
Summary: To investigate how the amount of peat consumption during wildfire in bogs or fens (muskeg), is affected by weather, fire behaviour, and properties of the tree canopy. Researchers will manually measure various aspects of the peat, such as total peat depth and the proportion of unburned peat present in the area. Peat depth measurements will be made by driving a 2.5cm steel rod into the peat with...


The hydrology of wetland-dominated basins in the zone of discontinuous permafrost near Fort Simpson, NWT
Principal Investigator: Quinton, William L.
Licenced Year(s): 2016 2015 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2001
Summary: The Fort Simpson region has a high density of open water and wetlands that occupies the zone of discontinuous permafrost. Discontinuous permafrost terrain is particularly sensitive to the effects of climatic warming because pronounced changes in water storage and runoff pathways could occur with small additional ground heating. The major peatland types of this region include channel fens, flat bog...


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