The End of the Chesapeake Bay Oyster (for awhile)?

Oyster harvests declined by 95% between 1980 and 2008, and by a much larger percentage over time. "In the late 1800s, 15 million bushels of oysters were harvested. In 1994, the total dropped below 79,000." In spite of repeated efforts, the University of Maryland Center for Environmental Science says that the only way we can continue to have oysters in the long run is to ban harvesting for now. Talk about shifting the supply curve!