Friday, November 11, 2016

Yellowstone uses dead lake trout to kill more lake trout

 …….But using lake trout carcasses to kill their spawn has been perhaps the most promising technique to date used on Yellowstone Lake to kill the picivorous exotic char before they grow into swimming organisms that take a toll on native cutthroat trout. If the method proves viable on a large scale, it could be a key tool in the fight to help cutthroat stage a comeback and rebound to their historical numbers. In turn, park managers hope to restore a multi-level trophic cascade that could, in theory, result in grizzly bears eating fewer elk calves……