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Nenagh, Ireland
$13.00
Title
Grand Prismatic Spring
Artist
Rob Hemphill
Medium
Photograph - Photography
Description
A view of the microbial mats at the Grand Prismatic Spring in Yellowstone National Park. The Grand Prismatic is the largest hot spring in the United States, and the third largest in the world, after Frying Pan Lake in New Zealand and Boiling Lake in Dominica. It is located in the Midway Geyser Basin.
A microbial mat is a multi-layered sheet of microorganisms, mainly bacteria and archaea. Microbial mats grow at interfaces between different types of material, mostly on submerged or moist surfaces, but a few survive in deserts. They colonize environments ranging in temperature from –40 °C to 120 °C. A few are found as endosymbionts of animals.
Although only a few centimetres thick at most, microbial mats create a wide range of internal chemical environments, and hence generally consist of layers of microorganisms that can feed on or at least tolerate the dominant chemicals at their level and which are usually of closely related species. In moist conditions mats are usually held together by slimy substances secreted by the microorganisms, and in many cases some of the microorganisms form tangled webs of filaments which make the mat tougher. The best known physical forms are flat mats and stubby pillars called stromatolites, but there are also spherical forms.
Uploaded
April 3rd, 2014
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Viewed 1,179 Times - Last Visitor from Fairfield, CT on 04/19/2024 at 3:46 AM
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