November 20, 2019 — The famed bay scallops of eastern Long Island came back after their near-death experience of brown tides only after years of a dedicated restoration effort. Now biologists are worried the fishery may be at risk with increasing water temperatures.
New York baymen are seeing the worst Peconic Bays scallop season in years, after summer 2019 water temperatures that reached a sustained July peak of 84 degrees in some places.
The scallops were devastated by severe brown tides for more than a decade starting in 1984 and were nurtured back with many years of work by scientists, baymen, aquaculture experts and volunteers. The shellfish face other threats like being eaten by cownose rays and other predators. But biologists think this situation is different.
“I do believe this one in dues to high water temperatures and low dissolved oxygen that may have coincided with spawning,” Long Island University professor Steve Tettlebach who works with the Cornell Cooperative Extension told National Fisherman. “So, the combination of these stressors is the most plausible explanation for the die-off of adults.”
The damage became evident during the Cornell fall scallop survey when workers found thousands of empty shells, and baymen came home largely empty-handed from the fall season.