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Wisconsin Scientists Mix Up Water Temperatures to Kill Invasive Species

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Wisconsin Scientists Mix Up Water Temperatures to Kill Invasive Species

University of Wisconsin scientists are studying how mixing the water in a lake could eliminate an invasive fish.

The technology works by moving large air bladders up and down the depth of a lake, mixing the water and raising its temperature to where it is intolerable for the fish, said Jake Vander Zanden, supervisor of the study.

The bladders are much like gigantic trampolines, Vander Zanden said. They’re about 25 feet across. Air is pumped in and out so it rises and falls.

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