Periwinkle Harvests
Historically low periwinkle harvests by commercial fishermen (averaging about 118,000 pounds per year) suddenly spiked in 1989 to 3.8 million pounds, then crashed to a level after 1993 of averaging about 616,000 pounds. The decade ending 2016 rebounded to an average of 852,041. In a narrow range of 6 to 8 cents a pound from 1950…