Saving Seafood

Warm ocean could mean early boom in 2016 lobster catch

March 3, 2016 — ROCKPORT, Maine (AP) — Maine’s lobster catches will likely peak early this year, which could mean an abundance of cheap lobster for consumers and bad news for the state’s signature industry, a group of scientists reported on Thursday.

Maine’s busy summer lobster fishing season typically picks up around early July, the same time the state’s tourism industry gets in gear. But scientists with the Portland-based Gulf of Maine Research Institute predict this year’s lobster season will get rolling two or three weeks early.

The scientists, who unveiled their findings during the Maine Fishermen’s Forum in Rockport, pinned the early lobster season on warming ocean temperatures. Along Maine’s coast, temperatures are 2 to 3 degrees Fahrenheit higher than normal. That means lobsters are likely to move inshore, shed their shells and become more easily trapped earlier this summer, they said.

An early lobster season can disrupt Maine’s valuable lobster supply chain, which is partially dependent on big July and August catches, and make prices plummet. Prices at the dock fell 16 percent in 2012, a year of early catches, and prices to consumers fell, too. The 2014 haul shattered state value records because of a high-volume catch that arrived on schedule.

Read the full story from the Associated Press at New Jersey Herald

Scientists say ocean warming is driving lobsters northward

March 2, 2016 — It’s too early to know what Maine’s 2015 lobster landings will look like, but there’s no doubt that the number will be huge.

In 2014, the last year for which the Department of Marine Resources has figures, Maine’s fishermen landed more than 123 million pounds of lobster — the third year in a row that landings topped 120 pounds — worth a record $457 million.

While last year’s numbers aren’t in, fishermen and dealers talk about a bonanza fishery, and mild weather saw the fishery stay active into December.

In a sense, the landings are unsurprising.

According to a 2015 Atlantic States Fisheries Management Commission stock assessment, the abundance of lobsters in the Gulf of Maine and on Georges Bank showed a meteoric rise starting in 2008 and is now at an all-time high. In southern New England, though, the story is completely different.

From a peak in 1997, the southern New England stock fell swiftly to a point where, by 2004, it was well below what scientists consider the threshold of sustainability. Things leveled off briefly; then the resource began an ongoing plunge again in 2010.

According to last year’s assessment, the Gulf of Maine-Georges Bank stock is not depleted and is not being overfished. The estimated lobster population from 2011 to 2013 was 248 million lobsters, which is well above the abundance threshold — a red flag for fisheries managers — of 66 million lobsters.

In contrast, in the years 2011 to 2013, the southern New England stock was depleted at an estimated 10 million lobsters. The “red flag” abundance level is 24 million lobsters.

Read the full story at The Ellsworth American

MAINE: Questioning our Changing Oceans’ panel discussion at forum

March 1, 2016 — Climate change and its impact on the ocean and the fishing industry is the topic of the March 3 session of the Maine Fishermen’s Forum, the Boothbay Register reported.

Thursday’s session will be held from 1 p.m. to 4 p.m. at the Samoset Resort in Rockport.

“As a fisherman, I’m seeing things on the water that I have never experienced before, and I have questions about what this means that I can’t easily answer.” Gerry Cushman, a lobsterman out of Port Clyde and board member for the Maine Fishermen’s Forum, told the newspaper. “I spend most of my life on the water so the Maine Fishermen’s Forum is one of the few times, as a fisherman, I have the time to focus on the future of my industry.”

Read the full story at Maine Biz

 

Fisheries scientists plan for a changing Bering Sea

February 21, 2016 — The North Pacific Fishery Management Council heard a draft plan for addressing climate change in the eastern Bering Sea earlier this month.

The plan was put together by scientists at the Seattle-based Alaska Fisheries Science Center, which is part of the National Marine Fisheries Service. Mike Sigler, program leader for the habitat and ecological processes research program at the science center, said the plan pulls together work that scientists there are already doing, and research they’d like to undertake.

“We have a clear understanding of species like walleye pollock, northern rock sole, red king crab, what will happen to them, and we can make quantitative forecasts of where they’re going. They’re not completely certain, but we have some good ideas of ecological processes,” Sigler said. “But then, we don’t have such good understanding for other species, like yellowfin sole, and we’re making a qualitative assessment of their vulnerability to climate.”

Eventually, the group wants to provide fisheries managers, like the North Pacific council, with a better look at what might be coming in 10 years — or even further down the road. One of the first parts of the plan is just putting together that qualitative assessment for more than a dozen species, which he expects to happen this year.

Read the full story from Alaska Dispatch News

 

Acidic Ocean Leads to Warped Skeletons for Young Coral

February 19, 2016 — Rising emissions of carbon dioxide create twin threats for coral in oceans around the world: warmer temperatures, which can cause mass bleachings, and ocean acidification, which can hinder the animals’ ability to build reefs.

But a new study published on Friday in the journal Science Advances suggests that ocean acidification may be the bigger worry in some waters.

Studying a chain of remote Australian islands in the Indian Ocean, researchers found that more acidic waters (those that have absorbed more atmospheric carbon dioxide) cause serious skeletal deformities in juvenile coral in subtropical waters.

Using 3-D imaging techniques, they saw that young coral from the Houtman Abrolhos islands developed skeletons that were missing sections or had very porous and fragile surfaces.

Other studies have shown similar effects of ocean acidification, but the researchers also discovered something that had not been seen in earlier studies of tropical coral development — higher temperatures didn’t have a negative effect on coral skeleton formation.

Read the full story at the New York Times

Climate cycle could determine the reproductive success of menhaden

February 19, 2016 — Scientists have long puzzled over what drives the reproductive success of Atlantic menhaden, a tiny but critical East Coast fish.

A new study, published in the ICES Journal of Marine Science and supported by the Lenfest Ocean Program, provides a partial answer: An oceanic climate cycle known as the Atlantic Multidecadal Oscillation, or AMO.

The finding is likely to be useful in improving the way scientists assess the species and the way managers set catch limits.

Menhaden is a small, oily fish that provides food for striped bass, bluefish, and several other species, as well as bait for fishermen.

It also is the target of the largest fishery on the East Coast, which is centred in Virginia and catches menhaden for use in nutritional supplements, animal feed, and fertilizer.

Setting catch limits has proved challenging, in part because no one has been able to say what drives recruitment—a technical term for how many young fish are produced. Recruitment largely determines how much fishing a population can sustain.

Tom Miller of the University of Maryland, and one of the authors of the study, explained that it is very difficult to understand and manage this stock.

To address this, the researchers used a statistical model designed for disorderly data like those on the abundance of young menhaden. They considered 16 factors that might be driving that abundance, including climatic cycles, intensity of fishing, temperature, salinity, and predator abundance.

Read the full story at FIS

ALASKA: Scientists draft fish management plan as Bering Sea changes

February 17, 2016 — The North Pacific Fishery Management Council heard a draft plan for addressing climate change in the eastern Bering Sea earlier this month.

The plan was put together by scientists at the Seattle-based Alaska Fisheries Science Center, which is part of the National Marine Fisheries Service. Mike Sigler, program leader for the habitat and ecological processes research program at the science center, said the plan pulls together work scientists there are already doing, and research they’d like to undertake.

“We have a clear understanding of species like walleye Pollock, northern rock sole, red king crab, what will happen to them, and we can make quantitative forecasts of where they’re going. They’re not completely certain, but we have some good ideas of ecological processes,” Sigler said. “But then, we don’t have such good understanding for other species, like yellowfin sole, and we’re making a qualitative assessment of their vulnerability to climate.”

Eventually, the group wants to provide fisheries managers, like the North Pacific council, with a better look at what might be coming in 10 years – or even farther down the road. One of the first parts of the plan is just putting together that qualitative assessment for more than a dozen species, which he expects to happen this year.

Read the full story at KDLG

Warmer waters could change Cape Cod fisheries

February 15, 2016 — Hot water is fine for fish chowder and lobster bisque, but not so much for many fish in the sea.

The National Oceanic and Atmospheric Administration has unveiled a study of 82 species of fish, mollusks and crustaceans, ranking each on how they might fare under a regime of warming waters in the Northeast.

The authors, and there are quite a few, selected important commercial species, various forage fish of little economic import such as sand lances that are ecological heavyweights, and endangered species.

The amount of available data varies widely species by species, but the authors made their best assessments based on the estimated vulnerability of each animal to shifting climate. They weighed environmental factors that would be altered by climate change (water and air temperature, salinity, acidity, precipitation, the variance of those factors, sea level and ocean currents) vs. the species’ resilience (prey and habitat specificity, sensitivity to temperature, acidity, stock size, population growth rate, spawning cycle and mobility).

The ocean has been heating up, if not steadily.

“It depends on what period you’re looking over,” reflected lead author John Hare, director of NOAA’s Narragansett Laboratory. “I tend to look over a long period, since the 1880s, it’s up about two degrees Fahrenheit. We took all the information we know now and try to look forward to 2050.”

Read the full story at The Cape Codder

 

Narragansett Bay temperature extremes signal trouble below

February 6, 2016 — Aboard the Cap’n Bert — A harbor seal pokes its mottled head out of the water, soulful eyes visible above a bristly mustache, before diving back down to snatch fish from the net being winched aboard the trawler.

“Gettin’ a free meal,” Captain Tom Puckett remarks with a shake of his head.

As the otter trawl net is hoisted up on the A-frame across the boat’s stern, it’s clear that it’s nowhere close to full. But it doesn’t matter. The Cap’n Bert is not a commercial fishing trawler. It’s a research vessel owned and operated by the University of Rhode Island’s Graduate School of Oceanography.

The 53-foot stern trawler is out on Narragansett Bay on this winter day carrying out its weekly ritual of testing the water temperature and other indicators and taking samples of marine life.

Doctoral student Joe Langan pulls open the net, spilling fish and shellfish unceremoniously onto the deck. He sorts the catch, just as he has done every week since September and as others have done before him, stretching back more than five decades as part of one of the oldest continuous marine research projects in the world.

From the wet and writhing pile, he picks out sea robin and skate, silver hake and red hake, rock crabs, spider crabs and lobsters — all species that are normally found in the Bay this time of year.

But when Langan gets to the bottom, he carefully picks up a flat, light-brown fish and pauses to study it.

“A Gulf Stream flounder,” he finally says. “Which should not be here.”

The little flounder is a warm-water species that shows up in May but would usually be gone by the time the temperature drops in December.

It is of course only one fish, but its presence here in the waters off Whale Rock on this January morning is yet another sign that Narragansett Bay is changing.

“And we’re seeing it happen,” Langan says.

Read the full story at Providence Journal

Cleaner fuels for fishing boats could backfire on the climate

February 5, 2016 — Fish is better than pork and beef—not just for your body, but for the planet. That’s long been the thinking, anyway. But a new study has uncovered a hidden climate impact of the fishing industry—one that, ironically, will get worse as boats switch to cleaner fuels. In some cases, the effect could make fishing for tuna as hard on the climate as raising pork, and trawling for shrimp about half as bad as raising beef.

Hogs and cattle get a bad rap because they—and their manure—emit a lot of methane, a powerful greenhouse gas. But the fishing industry also contributes to climate change: mostly from the carbon dioxide (CO2) from burned diesel fuel that persists in the atmosphere for hundreds of years. The boats produce other short-lived pollutants, such as sulfur oxides and black carbon, which have cooling and warming effects, respectively. But they have typically been neglected as unimportant in the grand scheme of things.

The new study may change that. Elliott Campbell and Brandi McKuin, environmental engineers at the University of California (UC), Merced, estimated fishing industry emissions by combining fisheries catch records with the amount of fuel typically needed to catch various species. Given the total burned fuel, they estimated the amounts of the pollutants, using information about engine types and fuel types. Black carbon, a form of soot that arises from incomplete combustion, has been underestimated by an order of magnitude in previous studies, the team reports in the Journal of Geophysical Research: Atmospheres.

Read the full story from Science Magazine