The Apalachicola-Chattahoochee-Flint Stakeholders group has formed a committee to address possible reasons why oysters and fish are disappearing from the Apalachicola Bay in Florida.Stakeholders met Thursday and Friday morning to discuss that and other issues affecting the river basin of which Lake Lanier is a part.“It’s one of the worst periods that they’ve ever had,” said Billy Turner, newly elected group chairman from Columbus, referring to the low harvest for oysters and fishermen. There is some opinion that the bay’s ecology has been affected by the severe drought that runs from Atlanta south to the Alabama state line, he said. Lake Lanier, the largest reservoir in the basin, often has been used to ease drought conditions downstream by releasing more water, resulting in lower lake levels.