Life at High Temperatures
by Thomas D. Brock
Sulfur Caldron, in the Mud Volcano area, is one of the most acidic springs in the Park. It is rich in sulfur and in Sulfolobus, a bacterium that thrives in hot, acid waters.
Left: Some acid springs, like this one at Norris, are rich in iron, an energy source used by some thermoacidophilic bacteria. Right: Cells of Sulfolobus attached to a sulfur crystal under a fluorescence microscope.
|Life at High Temperatures||Table of Contents||Previous Page||Next Page|