• Publications
  • Influence
Bacterial Diversity Associated with Blood Falls, a Subglacial Outflow from the Taylor Glacier, Antarctica
ABSTRACT Blood Falls is the surface manifestation of brine released from below the Taylor Glacier, McMurdo Dry Valleys, Antarctica. Geochemical analyses of Blood Falls show that this brine is of aExpand
  • 145
  • 17
  • PDF
Microbial ecology of the cryosphere: sea ice and glacial habitats
The Earth's cryosphere comprises those regions that are cold enough for water to turn into ice. Recent findings show that the icy realms of polar oceans, glaciers and ice sheets are inhabited byExpand
  • 191
  • 16
A Contemporary Microbially Maintained Subglacial Ferrous "Ocean"
An active microbial assemblage cycles sulfur in a sulfate-rich, ancient marine brine beneath Taylor Glacier, an outlet glacier of the East Antarctic Ice Sheet, with Fe(III) serving as the terminalExpand
  • 226
  • 15
  • PDF
Isolation of a Methanogen from Deep Marine Sediments That Contain Methane Hydrates, and Description of Methanoculleus submarinus sp. nov
ABSTRACT We isolated a methanogen from deep in the sediments of the Nankai Trough off the eastern coast of Japan. At the sampling site, the water was 950 m deep and the sediment core was collected atExpand
  • 135
  • 11
A microbial ecosystem beneath the West Antarctic ice sheet
Liquid water has been known to occur beneath the Antarctic ice sheet for more than 40 years, but only recently have these subglacial aqueous environments been recognized as microbial ecosystems thatExpand
  • 186
  • 10
  • PDF
A new analysis of Mars "Special Regions": findings of the second MEPAG Special Regions Science Analysis Group (SR-SAG2).
A committee of the Mars Exploration Program Analysis Group (MEPAG) has reviewed and updated the description of Special Regions on Mars as places where terrestrial organisms might replicate (per theExpand
  • 198
  • 9
  • PDF
Metabolic activity and diversity of cryoconites in the Taylor Valley, Antarctica
[1] Metabolic activity and biogeochemical diversity within cryoconites from the Canada, Commonwealth, Howard, and Hughes glaciers in the McMurdo Dry Valleys revealed the presence of a productiveExpand
  • 118
  • 9
  • PDF
Geomicrobiology of Blood Falls: An Iron-Rich Saline Discharge at the Terminus of the Taylor Glacier, Antarctica
Blood Falls, a saline subglacial discharge from the Taylor Glacier, Antarctica provides an example of the diverse physical and chemical niches available for life in the polar desert of the McMurdoExpand
  • 92
  • 8
  • PDF
Deep groundwater and potential subsurface habitats beneath an Antarctic dry valley
The occurrence of groundwater in Antarctica, particularly in the ice-free regions and along the coastal margins is poorly understood. Here we use an airborne transient electromagnetic (AEM) sensor toExpand
  • 89
  • 7
  • PDF
WISSARD at Subglacial Lake Whillans, West Antarctica: scientific operations and initial observations
Abstract A clean hot-water drill was used to gain access to Subglacial Lake Whillans (SLW) in late January 2013 as part of the Whillans Ice Stream Subglacial Access Research Drilling (WISSARD)Expand
  • 85
  • 5
  • PDF