For years, biologists have analyzed fish tissue to gauge the water quality in rivers. But in the Ohio River, researchers are now looking at bugs, too. Ryan Argo and Jamie Wisenall are standing in the shallows of the Ohio River, just outside Owensboro. With long nets, they reach towards the river bottom, scooping up the sediment.
Biologists Use Bug Index to Evaluate Ohio River Water Quality
By Erica Peterson & Kentucky Public Radio • Oct 26, 2012