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Ancient ecosystem thrives millions of years below Antarctic glacier
Date:4/16/2009

Priscu said researchers discovered the bacteria while investigating Blood Falls, a curious blood-red feature that flows from Taylor Glacier. They learned that the falls are red because they draw water from an iron rich pool, then discovered bacteria in their samples. The most common bacteria in the pool is Thiomicrospira arctica.

The researchers can't drill down to the pool because the glacier is too thick and the pool is too far back from the glacier's nose, Priscu said. The pool is believed to be less than three miles across, however, and a remnant of an ancient ocean that was trapped at least 1.5 million years ago when Taylor Glacier moved over Lake Bonney.

Priscu said scientists have known about Blood Falls for more than 100 years, and his research teams have collected data from there since the early 1990s. The Science paper grew out of Mikucki's research at MSU and Harvard University, he added. Mikucki studied Blood Falls for her doctoral degree at MSU and her postdoctoral research at Harvard. Mikucki, whose project was funded by the National Science Foundation, now teaches at Dartmouth College and continues to work with Priscu.

One co-author on the Science article was Peter Lee at the Hollings Marine Laboratory in Charleston, S.C. He was a postdoctoral researcher at MSU when Mikucki was a graduate student. Other co-authors were Ann Pearson, David Johnston and Daniel Schrag of Harvard, Alexandra Turchyn from the University of Cambridge, James Farquhar from the University of Maryland, and Ariel Anbar from Arizona State University.


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Contact: Evelyn Boswell
evelynb@montana.edu
406-994-5135
Montana State University
Source:Eurekalert

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