water pollution

12:09 pm
Fri October 26, 2012

Biologists Use New "Bug Index" to Evaluate Ohio River Water Quality

Biologist Ryan Argo disturbing the river sediment in search of macroinvertebrate samples.
Erica Peterson WFPL

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.

They wade back to the boat, and examine their haul…lots of larvae, and one identifiable leech.

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