Great Lake Sinkholes

Posted on May 27, 2009  Comments (0)

Grand Valley State University Scientist Discovers Great Lake ‘sinkholes’

Biddanda said the sinkholes are home to “bizarre” ecosystems dominated by brilliant purple mats of cyanobacteria, or blue-green algae, but largely devoid of fish.

“Groundwater from beneath Lake Huron is dissolving minerals from the defunct seabed and carrying them into the lake to form these exotic, extreme environments,” Biddanda said. “Those ecosystems are in a class not only with Antarctic lakes, but also with deep-sea, hydrothermal vents and cold seeps.”

The Lake Huron sinkholes are dominated by brilliant purple mats of cyanobacteria — cousins of microbes found on the bottom of permanently ice-covered lakes in Antarctica — and pallid, floating pony-tails of other microbial life

Related: Bizarre Anaerobic Ecosystems Discovered In Lake HuronRadiation Tolerant BacteriaLife Far Beneath the Ocean

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