129 record(s) found with the tag "physical sciences" (multi-year projects are grouped):
Not seeing the results you want? Try advanced search.

Wetland status, change, and seasonal inundation dynamics for assessing the vulnerability of waterfowl habitat within the ABoVE study domain
Principal Investigator: French, Nancy H
Licensed Year(s): 2020 2019
Summary: This licence has been issued for the scientific research application No.4543. The overarching project goal is to characterize changes in waterfowl habitat using remote sensing approaches. The first objective is to create wetland type and surface inundation products (maps) for the Arctic-Boreal Vulnerability Experiment (ABoVE) boreal region. The second objective is to assess the efficacy of remo...


Transitioning of permafrost to wetland and implications for biomass gains and losses
Principal Investigator: Chasmer, Laura E
Licensed Year(s): 2019
Summary: This licence has been issued for the scientific research application No.4527. The objectives are to: 1) Compare the distribution of tree and shrub biomass within accessible areas in the Taiga Shield and Taiga Plains landscapes using lidar remote sensing, and by developing tree and shrub vegetation biomass models from field data; 2) Characterize and compare non fire-disturbed patterns of veget...


Future of Tundra-Atmosphere Climate Interactions
Principal Investigator: Lafleur, Peter M
Licensed Year(s): 2019
Summary: The overall goal of this project is to increase the knowledge of how tundra environments interact with the atmosphere and predict how changing tundra vegetation will affect future climates. Tundra ecosystems exchange energy, water and carbon gases with the atmosphere, which are important elements of the climate system. As tundra vegetation reorganizes in response to global warming, these exchange ...


Vegetation Productivity on the Bathurst Caribou Range
Principal Investigator: Danby, Ryan K
Licensed Year(s): 2019 2018
Summary: The two main objectives are: to map changes in vegetation productivity on an annual basis across the Bathurst caribou herd’s range using satellite imagery obtained from NASA’s MODIS sensor (available since 2000) and analyze these data to identify where the most significant changes have occurred; and to collect and analyze data on the growth, establishment, and mortality of shrubs and trees over th...


Do diversity gradients and wildfires interact to facilitate tree range expansion across a broad latitudinal scale?
Principal Investigator: Reid, Kirsten
Licensed Year(s): 2019 2018
Summary: The overarching research goal of this project is to determine what conditions facilitate tree range expansion across the western Canadian boreal-tundra ecotone. Using a biogeographical, multi-trophic level approach, the research team aim to determine: 1. how multi-trophic level species composition changes across the tundra and which conditions dictate these changes; and, 2. the constraints, dri...


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): 2019 2018 2018 2017 2016 2015
Summary: Through this project the following objectives will be addressed: 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 (increase) in net carbon dioxide (methane) exchange based on plot- (<1m2) and ecosystem-scale...


Influence of changing active-layer thickness on permafrost peatland trace gas exchanges and carbon balance
Principal Investigator: Sonnentag, Oliver
Licensed Year(s): 2019 2017 2016 2015 2014 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 ...


A Mass-Energy Analysis of Permafrost and Vegetation Change Across a Mackenzie Mountain Treeline Ecotone: 1944 to 2017
Principal Investigator: Kershaw, Geoffrey GL
Licensed Year(s): 2019 2018 2017
Summary: The goal of this thesis is to characterize the hydrology of an alpine valley’s landscape Types (LTs) and how they affect storage and runoff responses to precipitation through the following four research objectives: 1) A physical description of LTs composing an alpine study catchment that are expected to exhibit distinct hydrological responses to precipitation inputs; 2) A physical description ...


Mackenzie River Class HHERA - Navigational Aid Stations
Principal Investigator: Wright, Greg T
Licensed Year(s): 2018
Summary: The objective of this project is to identify for closures sites with no unacceptable risks and to develop an action plan for additional work for any sites that cannot be closed. Twenty-two sites will be visited to collect soil, surface water (where available) and vegetation samples to determine levels of previously identified contaminants of concern. The work plan for each site involves soil, s...


AirMeth 2018
Principal Investigator: Hartmann, Jörg
Licensed Year(s): 2018
Summary: The objectives of this survey are to measure patterns of methane (CH4) concentrations over the Mackenzie Delta and to quantify the emissions of CH4 from this area. Together with the data of our previous campaigns we will be able to analyse the interannual variability of methane fluxes. Furthermore, the research team will investigate the possibility of linking in-situ data of tundra landscape ch...


TOTAL PAGES: 13