Tuesday, August 18, 2009

Will a well-mixed, warmer lake doom invasive fish?

The rainbow smelt, an invasive fish that threatens native species such as walleye and perch, may soon be feeling the heat — literally.

In an experiment that could show the way to evicting the unwanted fish from Wisconsin lakes, UW-Madison scientists and engineers hope to experimentally warm Crystal Lake in Vilas County in an effort to selectively wipe out the smelt. Using a device known as a GELI, an apparatus that looks like a submerged trampoline, the researchers will mix the waters of the 83-acre lake to warm the cool, deeper waters where the rainbow smelt thrive.

To read entire article, go to UW-Madison News.