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Pond in High Artic Drying Up Due to Global Warming

Some of the ponds which have been around for thousands of years in High Artic are drying up because of global warming , according to two researchers. Ancient ponds in the Arctic drying up during the polar summer as warmer temperatures evaporate shallow bodies of water illustrates the rapid effects of global warming, threatening bird habitats and breeding grounds and reducing drinking water for animals.

John P. Smol of Queens University in Kingston, Ontario, and Marianne S. V. Douglas of the University of Alberta in Edmonton have been studying about 40 ponds on Ellesmere Island in northern Canada since 1983.

When they went back last year, after an absence of a year, permanent ponds which previously had been up to a meter deep were drastically shrunken or even dry.

Their measurements had shown the water had been going down, but they were taken aback to find that about 40 well-studied pools among them Camp Pond, Cape Herschel Lagoon and Beach Ridge Pond were fractions of their former size, or totally gone.

"The final ecological threshold for an aquatic ecosystem is loss of water," said biology Prof. John Smol These sites have now crossed that threshold

"A key 'tipping point' has now been passed: Arctic ponds that were permanent water bodies for millennia are now ephemeral," These ponds were substantial bodies of water; Cape Herschel Lagoon, once 160 meters by 35 meters and a meter deep, "had only a small shallow puddle" (23 meters by 11 meters and 10 centimeters deep) in one basin when the scientists sampled it on July 13, 2006. Camp Pond, 20 meters by 40 meters, and Beach Ridge Pond, 100 meters by 60 meters, were completely dry.

Smol likens the warming conditions to a pot of soup on a stove. If you take the lid off, it is similar to what we are observing in these ponds. The soup will slowly decrease in volume and it will get saltier and saltier as the water evaporates, leaving the salts
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