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Full-Text Articles in Physical Sciences and Mathematics
Impact Of Seismic Lines On The Hydrology Of Wetlands In The Discontinuous Permafrost Zone, Southwestern Northwest Territories, Angela Hamilton
Impact Of Seismic Lines On The Hydrology Of Wetlands In The Discontinuous Permafrost Zone, Southwestern Northwest Territories, Angela Hamilton
Theses and Dissertations (Comprehensive)
Previous studies in the southern Northwest Territories have shown the underlying discontinuous permafrost is sensitive to disturbances such as the creation of seismic lines. Their creation has resulted in compaction topsoil and tree removal causing accelerated permafrost thaw. The loss of permafrost has caused seismic lines’ surface elevation to subside, which allows water to conjugate. This increases the soil moisture of a seismic line, which results in preferential thaw along the seismic line edges. Thaw along the edges over time has connected more previously isolated wetlands to seismic lines. This leads to more water entering, resulting in higher water levels …
Development And Application Of Hydrological And Limnological Monitoring In Lake-Rich Landscapes Of Canada’S Subarctic National Parks, Hilary Emma White
Development And Application Of Hydrological And Limnological Monitoring In Lake-Rich Landscapes Of Canada’S Subarctic National Parks, Hilary Emma White
Theses and Dissertations (Comprehensive)
Arctic and subarctic environments are being adversely influenced by human-caused climate change across our entire planet. Canada’s northern freshwater ecosystems are influenced by a variety of environmental stressors and are particularly sensitive to climate change, since small shifts in climate have the potential to substantially alter their hydrological, limnological, and biogeochemical conditions. Some other indirect effects on northern freshwater landscapes are the expansion of vegetation as well as changes in wildlife and waterfowl populations and distribution. It is, therefore, critical to understand the observed and predicted influences of climate change and other environmental stressors on these northern freshwater environments dominant …
Developing A Hydrological Monitoring Program For Ponds In Wapusk National Park, Manitoba, Using Water Isotope Tracers, Stephanie Roy
Developing A Hydrological Monitoring Program For Ponds In Wapusk National Park, Manitoba, Using Water Isotope Tracers, Stephanie Roy
Theses and Dissertations (Comprehensive)
Northern lake-rich landscapes are vulnerable to increases in surface air temperatures and are changing in dynamic ways. Current meteorological records indicate that some of the greatest warming in the past century has occurred in the Hudson Bay Lowlands (HBL). As the HBL is an extensive wetland consisting of hundreds of thousands of shallow lakes and ponds, it is difficult to anticipate the long-term implications that climate change will have on pond water balance. To develop and implement long-term monitoring of hydrological conditions, sampling of pond water isotope composition has occurred during the past six years in Wapusk National Park (WNP), …