Hydrogeomorphology of patchy wetlands in the high arctic, polar desert environment

Wetlands ◽  
10.1672/8-20 ◽  
2003 ◽  
Vol 23 (2) ◽  
pp. 291-309 ◽  
Author(s):  
Ming-ko Woo ◽  
Kathy L. Young
Keyword(s):  
High Arctic ◽  
Desert Environment ◽  
Polar Desert

Holocene ice wedge formation in the Eureka Sound Lowlands, high Arctic Canada

2021 ◽  
pp. 1-13
Author(s):  
Kethra Campbell-Heaton ◽  
Denis Lacelle ◽  
David Fisher ◽  
Wayne Pollard
Keyword(s):  
Organic Carbon ◽  
Dissolved Organic Carbon ◽  
Numerical Simulations ◽  
High Arctic ◽  
Desert Environment ◽  
Peat Accumulation ◽  
Polar Desert ◽  
Molar Ratios ◽  
Air Temperatures ◽  
Ice Wedge

Abstract Ice wedges are ubiquitous periglacial features in permafrost terrain. This study investigates the timing of ice wedge formation in the Fosheim Peninsula (Ellesmere and Axel Heiberg Islands). In this region, ice wedge polygons occupy ~50% of the landscape, the majority occurring below the marine limit in the Eureka Sound Lowlands. Numerical simulations suggest that ice wedges may crack to depths of 2.7–3.6 m following a rapid cooling of the ground over mean winter surface temperatures of −18°C to −38°C, corresponding to the depth of ice wedges in the region. The dissolved organic carbon (DOC)/Cl molar ratios suggest that the DOC in the ice wedges is sourced from snowmelt and not from leaching of the active layer. Based on 32 14CDOC measurements from 15 ice wedges, the wedges were likely developing between 9000–2500 cal yr BP. This interval also corresponds to the period of peat accumulation in the region, a proxy of increased moisture. Considering that winter air temperatures remained favorable for ice wedge growth throughout the Holocene, the timing of ice wedge formation reflects changes in snowfall. Overall, this study provides the first reconstruction of ice wedge formation from a high Arctic polar desert environment.

scholarly journals Sustainability of High Arctic Ponds in a Polar Desert Environment

ARCTIC ◽  
2010 ◽  
Vol 63 (1) ◽  
Author(s):  
Anna Abnizova ◽  
Kathy L. Young
Keyword(s):  
High Arctic ◽  
Desert Environment ◽  
Polar Desert ◽  
Arctic Ponds

scholarly journals Microbial Community Structure in Lake and Wetland Sediments from a High Arctic Polar Desert Revealed by Targeted Transcriptomics

PLoS ONE ◽  
2014 ◽  
Vol 9 (3) ◽  
pp. e89531 ◽  
Author(s):  
Magdalena K. Stoeva ◽  
Stéphane Aris-Brosou ◽  
John Chételat ◽  
Holger Hintelmann ◽  
Philip Pelletier ◽  
...  
Keyword(s):  
Community Structure ◽  
Microbial Community ◽  
Microbial Community Structure ◽  
High Arctic ◽  
Polar Desert

scholarly journals Comparing Rock-inhabiting Microbial Communities in Different Rock Types from a High Arctic Polar Desert

2018 ◽  
Author(s):  
Yong-Hoe Choe ◽  
Mincheol Kim ◽  
Jusun Woo ◽  
Mi Jung Lee ◽  
Jong Ik Lee ◽  
...  
Keyword(s):  
Microbial Communities ◽  
High Arctic ◽  
Polar Desert ◽  
Rock Types

scholarly journals An estimate of ice wedge volume for a High Arctic polar desert environment, Fosheim Peninsula, Ellesmere Island

2018 ◽  
Vol 12 (11) ◽  
pp. 3589-3604 ◽  
Author(s):  
Claire Bernard-Grand'Maison ◽  
Wayne Pollard
Keyword(s):  
Satellite Imagery ◽  
Regional Scale ◽  
High Arctic ◽  
Ellesmere Island ◽  
The Arctic ◽  
Ground Ice ◽  
Polar Desert ◽  
Ice Volume ◽  
Carbon Release ◽  
Wedge Volume

Abstract. Quantifying ground-ice volume on a regional scale is necessary to assess the vulnerability of permafrost landscapes to thaw-induced disturbance like terrain subsidence and to quantify potential carbon release. Ice wedges (IWs) are a ubiquitous ground-ice landform in the Arctic. Their high spatial variability makes generalizing their potential role in landscape change problematic. IWs form polygonal networks that are visible on satellite imagery from surface troughs. This study provides a first approximation of IW ice volume for the Fosheim Peninsula, Ellesmere Island, a continuous permafrost area characterized by polar desert conditions and extensive ground ice. We perform basic GIS analyses on high-resolution satellite imagery to delineate IW troughs and estimate the associated IW ice volume using a 3-D subsurface model. We demonstrate the potential of two semi-automated IW trough delineation methods, one newly developed and one marginally used in previous studies, to increase the time efficiency of this process compared to manual delineation. Our methods yield acceptable IW ice volume estimates, validating the value of GIS to estimate IW volume on much larger scales. We estimate that IWs are potentially present on 50 % of the Fosheim Peninsula (∼3000 km2), where 3.81 % of the top 5.9 m of permafrost could be IW ice.

High Arctic summer warming tracked by increased Cassiope tetragona growth in the world's northernmost polar desert

2017 ◽  
Vol 23 (11) ◽  
pp. 5006-5020 ◽  
Author(s):  
Stef Weijers ◽  
Agata Buchwal ◽  
Daan Blok ◽  
Jörg Löffler ◽  
Bo Elberling
Keyword(s):  
High Arctic ◽  
Polar Desert ◽  
Cassiope Tetragona ◽  
Summer Warming ◽  
Arctic Summer

scholarly journals Microbial Communities in a High Arctic Polar Desert Landscape

2016 ◽  
Vol 7 ◽  
Author(s):  
Clare M. McCann ◽  
Matthew J. Wade ◽  
Neil D. Gray ◽  
Jennifer A. Roberts ◽  
Casey R. J. Hubert ◽  
...  
Keyword(s):  
Microbial Communities ◽  
High Arctic ◽  
Polar Desert ◽  
Desert Landscape

scholarly journals High Bacterial Diversity of Biological Soil Crusts in Water Tracks over Permafrost in the High Arctic Polar Desert

PLoS ONE ◽  
2013 ◽  
Vol 8 (8) ◽  
pp. e71489 ◽  
Author(s):  
Blaire Steven ◽  
Marie Lionard ◽  
Cheryl R. Kuske ◽  
Warwick F. Vincent
Keyword(s):  
Bacterial Diversity ◽  
High Arctic ◽  
Biological Soil Crusts ◽  
Polar Desert ◽  
Soil Crusts
Sign in / Sign up

Export Citation Format

Share Document