Two new studies published by University of Maine scientists are putting a long-standing survey of the American lobster’s earliest life stages to its most rigorous test yet as an early warning system for trends in New England’s iconic fishery.
Two new studies published by University of Maine scientists are putting a long-standing survey of the American lobster’s earliest life stages to its most rigorous test yet as an early warning system for trends in New England’s iconic fishery. The studies point to the role of a warming ocean and local differences in oceanography in the rise and fall of lobster populations along the coast from southern New England to Atlantic Canada.
One of the papers, published in the scientific journal “Ecological Applications,” was led by Noah Oppenheim, who completed his research as a UMaine graduate student in 2016, with co-authors Richard Wahle, Damian Brady and Andrew Goode from UMaine’s School of Marine Sciences, and Andrew Pershing from the Gulf of Maine Research Institute. They report that the numbers of young-of-year lobsters populating shallow coastal nursery habitats each year, and temperature, provide a reasonably accurate prediction of trends in the lobster fishery some four to six years later.
Their model predicted regional differences in the recent record-breaking boom over the past decade, and now suggests the Gulf of Maine lobster fishery may be entering a period of decline; in effect a “cresting wave” of lobster abundance that may be heading northward in the region’s changing climate.
“Our model projects that the Gulf of Maine’s lobster landings will return to previous historical levels,” said Oppenheim, who is now executive director of the Pacific Coast Federation of Fishermen’s Associations and the Institute for Fisheries Resources in San Francisco. “These results don’t suggest a lobster crash, but this tool could give the fishing industry and policymakers additional lead time as they make decisions about their businesses and communities in the years ahead.
Read more at University of Maine
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