2013-2014 Science Planning Summaries
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Collaborative Research: Importance of heterotrophic and phototrophic N2 fixation in the McMurdo Dry Valleys on local, regional, and landscape scales

Program Manager:
Dr. Charles Amsler

Event Number: B-012-M

ASC POC/Implementer:
Samina Ouda / Meghan Walker

Dr. Edward Carpenter (Principal Investigator)

San Francisco State University
Romberg Tiburon Center
Tiburon, California

Supporting Stations:  McMurdo Station
Research Locations:  Taylor Valley

Project Description:
Researchers will study the microbial ecology of soils under and alongside stream beds (the hyporheic zone) and associated arid soils in various McMurdo Dry Valleys systems. They plan to study the biogeochemistry of these sites and the activity, composition, and distribution of the nitrogen-fixing communities. Ultimately, researchers would like to map the distribution of these communities throughout the valley ecosystem, via a landscape model, and extrapolate their influence on total nitrogen budgets.

Field Season Overview:
Five team members will camp for three weeks in the Taylor Valley in a shared camp with the New Zealand Terrestrial Antarctic Biocomplexity Survey (nzTABS) program. They will sample wet regions in the valley by foot and by helicopter. They will also set up a small overnight camp in the Victoria Valley, which will be accessed by helicopter.

Deploying Team Members:

  • Kathryn Coyne
  • Troy Gunderson
  • Andrew Kalmbach
  • Jill Sohm (Co-PI)

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