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IMPACTS OF ENHANCED TEMPERATURE AND SNOW DEPOSITION ON SENESCENCE DATE, VEGETATION COVER, AND CO2 EXCHANGE IN A CANADIAN HIGH ARCTIC MESIC ECOSYSTEM
Arctic regions are expected to experience an increase in both temperature and precipitation over the coming decades, which is likely to impact vegetation dynamics and greenhouse gas exchange. To test this response, an ...
Limnology and paleolimnology of adjacent High Arctic lakes with an emphasis on terrestrial-aquatic linkages: Cape Bounty, Melville Island, Nunavut
(2011-11-01)
Our knowledge of how Arctic freshwater ecosystems will respond to continued climate change and variability is fundamentally limited by logistical difficulties of such remote research, resulting in relatively sparse long-term ...
Geomorphic and Fluvial Response to Recent Permafrost Disturbances in a High Arctic River, Cape Bounty, Nunavut
(2011-12-09)
Using a sediment budget approach, suspended sediment transport dynamics were studied over the 2010 summer runoff season in the 8 km2 West River catchment at the Cape Bounty Arctic Watershed Observatory (CBAWO), Melville ...
Modelling Biophysical Variables and Carbon Dioxide Exchange in Arctic Tundra Landscapes using High Spatial Resolution Remote Sensing Data
(2013-01-04)
Vegetation community patterns and processes are indicators and integrators of climate. Recently, scientists have shown that climate change is most pronounced in circumpolar regions. Arctic ecosystems have traditionally ...
BIOPHYSICAL REMOTE SENSING AND TERRESTRIAL CO2 EXCHANGE AT CAPE BOUNTY, MELVILLE ISLAND
(2012-01-13)
Cape Bounty, Melville Island is a partially vegetated High Arctic landscape with three main plant communities: polar semi-desert (47% of the study area), mesic tundra (31%) , and wet sedge meadows (7%). The objective of ...
A Polysaccharide Extracted From Sphagnum Moss as Antifungal Agent in Archaeological Conservation
(2010-01-14)
On the basis of the well-known preservative properties of Sphagnum moss, a potential opportunity to use moss polysaccharides (Sphagnan) in art conservation was tested. Polysaccharides were extracted from the moss (S. ...
A comparative paleolimnological assessment of the influences of early Arctic population groups on freshwater ecosystems from southern Baffin Island, Nunavut
(2011-10-04)
Recent paleolimnological research in the eastern Canadian high Arctic on the ecological impact of the Thule c.1000-1500 AD has documented the influence of prehistoric anthropogenic activities. Six lake and pond sites ...
MODELING BIOPHYSICAL VARIABLES IN THE CANADIAN HIGH ARCTIC USING SYNTHETIC APERTURE RADAR DATA
(2014-02-04)
The estimation or modeling of biophysical variables such as surface roughness, vegetation phytomass, and soil moisture in the Arctic is an important step towards understanding arctic energy fluxes, effects of changing ...
The Ordering of Things: Narrative Geographies of Bloody Falls and the Central Canadian Arctic
(2015-12-16)
This study examines the geographies of the Bloody Falls massacre story, an account of a massacre of a group of Inuit by a group of Dene allegedly witnessed by explorer Samuel Hearne along the Coppermine River in July 1771. ...
Spatial and temporal patterns of carbon dioxide exchange for a wet sedge plant community, Melville Island, NU
(2016-01-28)
Wet sedge meadows are the most productive vegetation communities in the High Arctic. Preliminary research suggests that this vegetation type is a net carbon sink, yet the controls – and the scale at which those controls ...