17 record(s) found in the location "Dehcho Region" (multi-year projects are grouped):
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Impacts of wildfire on runoff response and downstream water chemistry in a region with rapid permafrost loss
Principal Investigator: Olefeldt, David
Licensed Year(s): 2024
Summary: This licence has been issued for the scientific research application No. 5892. Objective summary: To assess the effect of wildfires on changes in water quality in the Dehcho and South Slave region, which are affected by runoff from peatlands (containing e.g., organics, nutrients, and mercury/methylmercury), which are already experiencing increased permafrost thaw due to climate change. Synop...


Monitoring the impacts of permafrost thaw on water resources at Scotty Creek, NWT
Principal Investigator: Quinton, William L.
Licensed Year(s): 2024 2023
Summary: This licence has been issued for the scientific research application No. 5781. The long-term objective of this research programme is to improve the understanding, parameterisation and prediction of water flow and storage processes in peatland-dominated, thawing, discontinuous permafrost. Over the next 5 years, significant progress toward this long term objective will be made through the foll...


Lakes as sentinels of environmental change in discontinuous permafrost peatlands
Principal Investigator: Korosi, Jennifer B
Licensed Year(s): 2024 2023
Summary: This licence has been issued for the scientific research application No.5468. The goal of this project is to understand and predict how lakes in discontinuous permafrost peatlands are changing in response to climate warming and loss of permafrost. The field activities for 2023 will focus on three regions/objectives: Inferring long-term environmental change in the Five Fish Lakes (Lue Túé ...


Murky waters: Impacts of disturbances on the mobilization and downstream delivery of mercury and methylmercury
Principal Investigator: Olefeldt, David
Licensed Year(s): 2023 2022 2021
Summary: This licence has been issued for the scientific research application No.5448. This project proposes to monitor wetlands, streams, rivers, and lakes in the Dehcho region, with a focus on understanding current and future trends in aquatic mercury and methylmercury. The region has vast stores of mercury accumulated in organic wetland soils, and there is a risk that disturbances such as permafrost ...


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
Licensed Year(s): 2024 2023 2022 2021 2019 2018 2018 2017 2016 2015
Summary: This licence has been issued for the scientific research application No.5219. Through this project the research group will address the following objectives: What is the net effect of permafrost thawing induced biophysical and biogeochemical feedbacks to the climate system? How do these two types of feedback differ between the sporadic and discontinuous permafrost zones? Is the reported decrease...


Influence of changing active-layer thickness on permafrost peatland trace gas exchanges and carbon balance
Principal Investigator: Sonnentag, Oliver
Licensed Year(s): 2022 2021 2019 2017 2016 2015 2014 2013 2013
Summary: The project of the present application is the continuation of year-round eddy covariance measurements of carbon, water and energy fluxes at Scotty Creek, established in 2013. The key methodology is tower-mounted micrometeorological measurements around the eddy covariance technique using an open-path infra-red gas analyzer and a sonic anemometer. These measurements are supported by measurements ...


Impacts of 10 years of climate warming on forests and peatlands in the Dehcho
Principal Investigator: Errington, Ruth
Licensed Year(s): 2018
Summary: After 10 years of warming climate conditions, the Canadian Fire Service is leading a field project to re-measure a series of permanent monitoring plots to identify any changes to the forest stand structure, tree growth rates, plant community composition, tree, shrub, herb, and lichen biomass. These changes will be associated with climate trends and environmental factors such as soil type, presence...


Planning and Collection of Data on Boreal Wildfire Effects: Studies of broad-scale 2014 Wildfires in NWT, Canada
Principal Investigator: Bourgeau-Chavez, Laura L.
Licensed Year(s): 2018 2017 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 2014-15 wildfires 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: ...


Effects of fire on peatland permafrost stability and carbon cycling
Principal Investigator: Olefeldt, David
Licensed Year(s): 2017 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 team intend to address five research questions: ...


Effects of wildfire on biomass combustion in boreal peatlands and forests
Principal Investigator: Turetsky, Merritt R.
Licensed 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...


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