Physicochemical and Biological Controls on Carbon and Nitrogen in Permafrost from an Ultraxerous Environment, McMurdo Dry Valleys of Antarctica

2017 ◽  
Vol 122 (10) ◽  
pp. 2593-2604 ◽  
Author(s):  
Benoit Faucher ◽  
Denis Lacelle ◽  
Alfonso Davila ◽  
Wayne Pollard ◽  
David Fisher ◽  
...  
Keyword(s):  
Mcmurdo Dry Valleys ◽  
Dry Valleys ◽  
Carbon And Nitrogen

Distribution of organic carbon and nitrogen in surface soils in the McMurdo Dry Valleys, Antarctica

Polar Biology ◽  
2000 ◽  
Vol 23 (2) ◽  
pp. 121-128 ◽  
Author(s):  
Christian H. Fritsen ◽  
Amanda M. Grue ◽  
John C. Priscu
Keyword(s):  
Organic Carbon ◽  
Mcmurdo Dry Valleys ◽  
Dry Valleys ◽  
Surface Soils ◽  
Carbon And Nitrogen

THE IMPACT OF CLIMATE CHANGE ON LAKE VANDA, MCMURDO DRY VALLEYS, ANTARCTICA

2016 ◽  
Author(s):  
Devin Castendyk ◽  
◽  
Maciej K. Obryk ◽  
Sasha Z. Leidman ◽  
Michael Gooseff ◽  
...  
Keyword(s):  
Climate Change ◽  
Mcmurdo Dry Valleys ◽  
Dry Valleys ◽  
Impact Of Climate Change ◽  
The Impact

PRELIMINARY CHARACTERIZATION OF WIND-BLOWN DUST FROM THE MCMURDO DRY VALLEYS OF ANTARCTICA

2016 ◽  
Author(s):  
Melisa A. Diaz ◽  
◽  
Susan A. Welch ◽  
Kathleen A. Welch ◽  
Alia L. Khan ◽  
...  
Keyword(s):  
Mcmurdo Dry Valleys ◽  
Dry Valleys ◽  
Preliminary Characterization

ALPINE GLACIER ADVANCE DURING MIS 11 IN THE MCMURDO DRY VALLEYS, ANTARCTICA

2016 ◽  
Author(s):  
Kate M. Swanger ◽  
◽  
Joerg M. Schaefer ◽  
Gisela Winckler
Keyword(s):  
Mcmurdo Dry Valleys ◽  
Dry Valleys ◽  
Alpine Glacier ◽  
Glacier Advance

SOLUBLE AND BULK GEOCHEMICAL ANALYSIS OF AEOLIAN MATERIAL FROM THE MCMURDO DRY VALLEYS, ANTARCTICA

2017 ◽  
Author(s):  
Melisa A. Diaz ◽  
◽  
Byron J. Adams ◽  
Alia L. Khan ◽  
Kathleen A. Welch ◽  
...  
Keyword(s):  
Mcmurdo Dry Valleys ◽  
Geochemical Analysis ◽  
Dry Valleys

Shackletonia cryodesertorum (Teloschistaceae, Ascomycota), a new species from the McMurdo Dry Valleys (Antarctica) with notes on the biogeography of the genus Shackletonia

2016 ◽  
Vol 15 (7) ◽  
pp. 743-754 ◽  
Author(s):  
Isaac Garrido-Benavent ◽  
Ulrik Søchting ◽  
Asunción de los Ríos Murillo ◽  
Sergio Pérez-Ortega
Keyword(s):  
New Species ◽  
Mcmurdo Dry Valleys ◽  
Dry Valleys ◽  
A New Species

Dilution-to-Extinction Culturing of Psychrotolerant Planktonic Bacteria from Permanently Ice-covered Lakes in the McMurdo Dry Valleys, Antarctica

2007 ◽  
Vol 55 (3) ◽  
pp. 395-405 ◽  
Author(s):  
U. Stingl ◽  
J.-C. Cho ◽  
W. Foo ◽  
K. L. Vergin ◽  
B. Lanoil ◽  
...  
Keyword(s):  
Mcmurdo Dry Valleys ◽  
Dry Valleys ◽  
Planktonic Bacteria

scholarly journals Cryoconite hole connectivity on the Wright Lower Glacier, McMurdo Dry Valleys, Antarctica

2016 ◽  
Vol 62 (234) ◽  
pp. 714-724 ◽  
Author(s):  
SHELLEY MACDONELL ◽  
MARTIN SHARP ◽  
SEAN FITZSIMONS
Keyword(s):  
Spatial Variability ◽  
Drainage System ◽  
Chloride Content ◽  
Mcmurdo Dry Valleys ◽  
Hydrological Connectivity ◽  
Dry Valleys ◽  
Near Surface ◽  
Cryoconite Hole ◽  
Transfer Method ◽  
Surface Ice

ABSTRACTCryoconite holes can be important sources and stores of water and nutrients on cold and polythermal glaciers, and they provide a habitat for various forms of biota. Understanding the hydrological connectivity of cryoconite holes may be the key to understanding the transport of nutrients and biological material to the proglacial areas of such glaciers. This paper aims to characterize and explain spatial variability in the connectivity of ice-lidded cryoconite holes on a small, piedmont glacier in the McMurdo Dry Valleys through geochemical analysis of cryoconite hole waters. Solute concentrations in both surface and near-surface ice and cryoconite holes, vary greatly along the glacier centerline, and all sample types displayed similar spatial patterns of variability. Using chloride as a tracer, we estimated variations in cryoconite hole connectivity along the glacier centerline. We found that a previously used mass transfer method did not provide reliable estimates of the time period for which cryoconite hole waters had been isolated from the atmosphere. We attribute this to spatial variability in both the chloride content of the surface ice and surface ablation rates. The approach may, however, be used to qualitatively characterize spatial variations in the hydrological connectivity of the cryoconite holes. These results also suggest that ice-lidded cryoconite holes are never truly isolated from the near-surface drainage system.

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