Saving Seafood

Warm Waters Prevent Cod Stocks from Recovering

November 13, 2015 — Cod use to be the backbone of New England’s fisheries, but now stocks have nearly collapsed. While the decline was due primarily to overfishing, a new report led by the Gulf of Maine Research Institute (GMRI) reveals that stocks haven’t been able to recover because of the rapidly warming waters in the Gulf of Maine.

The Gulf of Maine is warming 99% faster than anywhere else in the world, which has led to changes in major currents and climate phenomena.

Noting the continued decline of cod stocks, fisheries managers severely restricted harvest rates in 2010, but that hasn’t made much of a difference. Stocks are hovering around three to four percent of sustainable levels.

Read the full story at Marine Science Today

Climate change fuels cod collapse

November 3, 2015 — The strongest link yet between climate change and the collapse of New England’s cod fish stunningly confirms how global emissions fuel regional calamities. The problems can no longer be contained by fishery council catch limits. They now demand worldwide greenhouse gas solutions.

A team of scientists, including those from the Gulf of Maine Research Institute, the University of Maine, and the Bigelow Laboratory for Ocean Sciences in Maine, found that average surface water temperature in the Gulf of Maine rose four degrees between 2004 and 2013. Temperatures in the gulf have risen faster than in 99 percent of all sea waters, with record warmth recorded in 2012.

Four degrees is trivial to humans, who can shed sweaters or seek shade. But for a cold-blooded fish at the southern edge of its breeding range, unable to turn on the AC against the northward shift of the Gulf Stream, four degrees is a sauna. Less cod larvae survive in warmer water, possibly because their cold-water zooplankton food is also less available. Surviving cod then seek deeper, colder water, where more voracious predators await to compound their mortality.

The study, published last week in the journal Science, helps explain why cod stocks have not rebounded under draconian federal catch limits. Adding in the negative impact of warmer water, researchers found that fishing mortality was far too high to rebuild stocks even when fishermen did not exceed quotas.

Read the full story at Boston Globe

A fisherman’s doubt, and his love of the sea

November 3, 2015 — He is up before the dawn, and, a creature of steady habits, he heads for the seashore.

It’s dark when Frank Mirarchi jumps into his black pickup truck, and dark still when he reaches Scituate Harbor. He parks on the town pier and stares at the ocean. But his 55-foot stern dragger is no longer moored there.

Actually, the boat is there. But it’s no longer his. It was renamed last June after he sold it — a poignant punctuation point to Mirarchi’s half-century career as a commercial fisherman.

“I’m down here every morning to watch the boats go out,’’ he told me Monday as we sat on a bench overlooking the dazzling harbor and under an unseasonably warm autumn sun. “I did it for 52 years. And I still love it.’’

I first met Mirarchi in early January when the harbor was icy and fat flakes of snow gently fell as if one of those snow globes had been softly shaken.

He is the son of a scientist and is something of a self-taught scientist himself. When I suggested Governor Charlie Baker would do well to pick his brain and appoint him to an ad hoc group looking into the travails of the cod fishery in the Gulf of Maine, the new governor took my advice. And soon Mirarchi was shaking hands with Baker on Beacon Hill.

When the latest news arrived last week about the depths of the cod collapse, the numbers were so alarming that I instantly thought of Frank and those like him who found their livelihood at sea.

Read the full story at Boston Globe

Will Maine lobster crash like cod? Only close ocean monitoring will tell

November 2, 2015 — There was a mix of news about the Gulf of Maine last week. First, there were dire warnings about the role of rising ocean temperatures in the demise of cod in the North Atlantic. Then came what sounded like good news — Maine has surpassed Massachusetts to become the state with the second most lucrative seafood landings in the country. Finally, on Friday, federal regulators announced they would close the Gulf of Maine herring fishery this month.

All of these stories are interrelated and point to the need for much more research to gain better understanding about what is happening in the Atlantic Ocean and why. With better knowledge about how changing ocean conditions affect different species, regulators can more effectively target rules to protect them and the fishermen who make a living catching them.

The virtual disappearance of cod from the waters off New England is not news. But a new report, published in the journal Science, concludes that rising ocean temperatures played a much larger role in the decline than initially thought. The study’s lead author, Andrew Pershing, is a scientist with the Gulf of Maine Research Institute in Portland.

In the simplest sense, regulators decide how many tons of a species can be taken from the ocean based on assessments of that species’ population. The problem with cod management, Pershing’s report concludes, is that regulators didn’t fully grasp the severity of the ocean temperature increase and what it meant for the legendary groundfish. As a result, regulators allowed fishermen to catch too many cod.

“Failure to recognize the impact of warming on cod contributed to overfishing,” the report said. “Recovery of this fishery depends on sound management, but the size of the stock depends on future temperature conditions. The experience in the Gulf of Maine highlights the need to incorporate environmental factors into resource management.”

This is especially true in the gulf, which is warming faster than 99.9 percent of the world’s oceans. Most troubling, beginning in 2004, the rate of warming in the Gulf of Maine increased more than seven-fold, the report says. Because of this rapid warming, regulatory limits on cod fishing didn’t work because cod did not reproduce and grow as expected.

This isn’t an academic problem. As the cod population declined, regulators imposed quotas that allowed fishermen to catch less. When the population didn’t rebound, regulators tightened the quotas, adding to the economic hardship for fishing communities.

Read the full editorial at Bangor Daily News

Maine business owners explore challenges, opportunities of climate change

October 30, 2015 — SOUTH PORTLAND — Several Maine business owners said Friday that adapting to climate change doesn’t have to be costly and, in many cases, can help a company’s finances as well as the environment.

Climate change presents considerable challenges but also potential opportunities to Maine businesses and communities, many of which are witnessing the impacts of a changing ocean environment before their counterparts elsewhere around the country. That was a key theme of a forum co-sponsored Friday by the South Portland Chamber of Commerce and the Natural Resources Council of Maine.

“Ultimately, this has to make economic sense,” U.S. Sen. Angus King, I-Maine, said via Skype because early-morning budget votes in Washington prevented his return to Maine. “We can’t depend on everybody simply being good guys or nice men and women. It has to work in terms of a return on investment.”

Laying out the challenges facing Maine due to a changing climate, King and Gulf of Maine Research Institute President and CEO Don Perkins discussed how lobster and other fish species are already changing their habits as the Gulf of Maine warms. A recent six-part Portland Press Herald series explored the ecological and economic implications of the fact that the Gulf of Maine has warmed faster than almost every part of the oceans around the globe during the past decade.

“It’s real and it has very sobering implications for our fishing industry, obviously,” said Perkins, whose staff at GMRI recently co-authored a scientific study showing cod populations were not recovering because of warming Gulf of Maine waters. “Once you get over agonizing about that – and it is cause for agony – the fact is that we’re dealing with that problem a decade or a few decades earlier than many other ocean regions. And as a result, there is a huge opportunity in this state to figure out how to understand a changing system.”

Read the full story at Portland Press Herald

 

Climate change hurting New England cod population, study says

October 29, 2015 — The rapid warming of the waters off New England has contributed to the historic collapse of the region’s cod population and has hampered its ability to rebound, according to a study that for the first time links climate change to the iconic species’ plummeting numbers.

Between 2004 and 2013, the mean surface temperature of the Gulf of Maine — extending from Cape Cod to Cape Sable in Nova Scotia — rose a remarkable 4 degrees, which the researchers attributed to shifts in the ocean currents caused by global warming.

The study, which was released Thursday by the journal Science, offers the latest evidence of climate change — this time, affecting a species once so plentiful that fishermen used to joke that they could walk across the Atlantic on the backs of cod.

Fisheries management officials have sharply limited cod fishing in hopes of protecting the species, but they estimate the number of cod remain at as little as 3 percent of what would sustain a healthy population. The limits, in turn, have hurt fishermen.

“Managers [of the fishery] kept reducing quotas, but the cod population kept declining,” said Andrew Pershing, the study’s lead author and chief scientific officer of the Gulf of Maine Research Institute in Portland. “It turns out that warming waters were making the Gulf of Maine less hospitable for cod, and the management response was too slow to keep up with the changes.”

The institute had reported last year that the rise in temperatures in the Gulf of Maine exceeded those found in 99 percent of the world’s other large bodies of saltwater. The authors of Thursday’s study link the rapid warming to a northward shift in the Gulf Stream and changes to other major currents in the Atlantic and Pacific oceans.

They say the warmer water coursing into the Gulf of Maine has reduced the number of new cod and led to fewer fish surviving into adulthood. Cod prefer cold water, which is why they have thrived for centuries off New England.

The precise causes for the reduced spawning are unclear, the researchers said, but they’re likely to include a decline in the availability of food for young cod, increased stress, and more hospitable conditions for predators. Cod larvae are View Story eaten by many species, including dogfish and herring; larger cod are preyed upon by seals, whose numbers have increased markedly in the region.

Read the full story at the Boston Globe

Scientists: Warming Ocean Factor in Collapse of Cod Fishery

October 29, 2015 — PORTLAND, Maine (AP) — The rapid warming of waters off New England is a key factor in the collapse of the region’s cod fishery, and changes to the species’ management are needed to save one of America’s oldest industries, according to a report published Thursday in Science magazine.

Fishery managers say cod spawning in the Gulf of Maine — a key fishing area between Cape Cod and Canada that touches Massachusetts, Maine and New Hampshire — is only about 3 percent of sustainable levels, and participants in the fishery that dates to the Colonial era face dramatic quota cuts as a result.

The scientists behind the Science report say the warming of the Gulf of Maine, which accelerated from 2004 to 2013, reduced cod’s capacity to rebound from fishing pressure. The report gives credence to the idea — supported by advocacy groups, fishing managers and even some fishermen — that climate change has played a role in cod’s collapse.

The lead author of the study, Andrew Pershing of the Gulf of Maine Research Institute in Portland, said the gulf is warming at a rate 99 percent faster than anywhere else in the world, and as a result, too many of the fish aren’t living past age 4 or 5. Cod can live to be older than 20.

“Every animal has a temperature range that they prefer. The Gulf of Maine, for cod, is really at the warm end of that,” Pershing said. “If you warm it, you push it somewhere that’s really uncomfortable.”

Read the full story from the Associated Press at The New York Times

NASA commits $6.5M to Gulf of Maine Research Institute for climate change education

October 21, 2015 — The Gulf of Maine Research Institute in Portland is receiving a $6.5 million grant from NASA to create a new educational program focused on science knowledge and problem-solving related to climate change.

The grant will allow the nonprofit organization to upgrade the technical infrastructure at its Sam L. Cohen Center for Interactive Learning in Portland to deliver the new educational content to the 10,000 Maine 5th and 6th graders who visit each year, GMRI announced Tuesday. The organization will also making the educational programing web-accessible to visitors in other science centers and classrooms in Maine and nationwide.

Through customization of the new content from GMRI’s educational program, LabVenture!, the programming will allow students to investigate how climate change is affecting their local region and the rest of the world. The five-year grant, which will begin Nov. 1, will be shared with national science education partners.

Work at GMRI will begin immediately, and new programming content is expected to be available for the 2018-2019 school year.

Read the full story at Maine Biz

GMRI: Out of the Blue

October 9, 2015 — The following was released by the Gulf of Maine Research Institute:

Many bountiful and well-managed fish species from the Gulf of Maine are not harvested, primarily due to lack of market demand. Fishermen get paid so little for these products, they can’t afford to pay their expenses to harvest them. For example, the average boat price for cape shark, also known as dogfish, in 2013 was $0.16/lb, while cod garnered $2.10/lb. Meanwhile, chefs who have worked with dogfish compare it to working with the popular mahi mahi.

To give the public an opportunity to try these products, GMRI’s restaurant, institution, and retail partners work together to make them available and promote them. In addition, our Seafood Dining Series provides an opportunity to try these fish at special dinners hosted by our Culinary Partners.

Out of the Blue species include Acadian redfish, Atlantic mackerel, cape shark (dogfish), whiting, and Atlantic pollock. Look for them at your local restaurants and retailers to expand your palate and support the local fishing industry!

Interested in cooking up some Out of the Blue species yourself? Check out these great recipes and cooking tips.

Read the release online

 

UMass Dartmouth researchers developing open-source system for assessing fish movement

October 7, 2015 — UMass Dartmouth School for Marine Science & Technology (SMAST) Associate Professor Geoffrey Cowles is leading a collaborative research effort to develop geolocation methodologies to improve understanding of fish movement patterns of Atlantic cod, yellowtail flounder, and monkfish. The project will focus on the Gulf of Maine/Georges Bank and includes researchers from SMAST, Northeastern University, the Gulf of Maine Research Institute, the Massachusetts Division of Marine Fisheries, along with the fishing industry.

Geolocation, which is the process of taking data recovered from a fish archival tag and coming up with the best estimate of positions between release and recapture, can provide insights into catchability and fishery interactions. Using this technique, the research team will be able to guide behavior-dependent aspects of the model parameterization, as well as interpret the geolocated tracks. Researchers will also employ their collective skills in computer programming, oceanographic modeling, statistical analysis, and fisheries biology to assist in furthering the development of technology to geolocate fish.

This study will also use data acquired from previous studies on each of the example species, which all have their own characteristic behaviors and were tagged in different areas of the Gulf of Maine and Georges Bank region. Most studies of fish movements have relied on fishery recaptures of conventional tags, which provide only the locations of release and recapture. Such tagging studies may bias perceptions of movement patterns.

Archival tags, which are attached to fish internally or externally to record temperature and pressure at regular intervals, enable estimations of fish location while at large. This type of information is often not fully utilized due to the technical difficulties of producing such movement histories via geolocation techniques.

Read the full story at the New Bedford Standard- Times