New Marine Science Center Rises on Quahog Bay: Plans, Progress, and Impact
By Sophia Al-Mansoor
The waters of Casco Bay tell a complex story. Soft-shell clam populations, long a backbone of the coastal economy, have suffered steep declines over the past two decades. The driver is two-fold: unchecked predation by invasive European green crabs and increasing ocean acidification. Acidic mud flats eat away at the thin calcium carbonate shells of juvenile clams before they can bury themselves to safety.
Meanwhile, the region has experienced an aquaculture pivot. Hardy eastern oysters, raised in floating mesh bags and bottom cages, are flourishing in the same estuaries where wild clams struggle. The new lab enables biologists to track local seawater chemistry down to subtle diurnal shifts, generating granular data sets that state regulators and commercial growers desperately need.
Research conducted on site will test innovative sediment buffering techniques. By returning crushed, weathered oyster and clam shells directly into mud flats, scientists can reduce acidity in the top centimeters of sediment. This simple intervention gives juvenile bivalves a window of survival, proving that targeted habitat restoration can safeguard wild fisheries alongside commercial oyster farming.
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