Saving Seafood

Scallop fishery may be imperiled by acidic seas

October 16, 2018 — Increasingly acidic seas pose a serious threat to the sea scallop fishery, a recent collaborative study by the University of Virginia, the Ocean Conservancy, the NOAA Northeast Fisheries Science Center, and the Woods Hole Oceanographic Institution (WHOI) concluded.

“As levels of carbon dioxide increase in Earth’s atmosphere, the oceans become increasingly acidic — a condition that could reduce the sea scallop population by more than 50 percent in the next 100 years under a worst-case scenario,” the study states. Models from the study, which were published recently in the journal PLOS One, combine existing data with several factors that impact the fishery: “future climate change scenarios, ocean acidification impacts, fisheries management policies, and fuel costs for fishermen.” Those factors were modeled out into 256 different possibilities.

Oceans absorb vast quantities of carbon dioxide. Fossil fuel emissions exacerbate what the oceans take in, further acidifying the water. “That acidity can corrode the calcium carbonate shells that are made by shellfish like clams, oysters, and scallops, and even prevent their larvae from forming shells in the first place,” the study states.

“[The scallop fishery is] healthy and valuable today in part because it is very well managed,” says Scott Doney, a co-author from WHOI and the University of Virginia. “We also used the model to ask whether management approaches could offset the negative impacts of ocean acidification.”

It couldn’t. In every scenario, elevated carbon dioxide levels created acidiferous ocean water. The culprit, the study concluded, was “unabated carbon emissions.”

Read the full story at the MV Times

New England fishery staff optimistic about another big scallop year

October 9, 2018 — As amazing as the 2018 New England scallop harvest has been, the 2019 season could be just as great.

That’s what the staff at the New England Fishery Management Council (NEFMC) is saying following multiple dredge and high-resolution drop camera surveys taken to evaluate scallop biomass and help inform coming recommendations to the National Oceanic and Atmospheric Administration (NOAA).

“From a biological perspective – the outlook is good for next year,” Jonathan Peros, the NEFMC’s lead fishery analyst for Atlantic sea scallops, told Undercurrent News in an email sent Friday. “The fishery could achieve a harvest similar to 2018 levels in the coming year.”

Speaking of the 2018 scallop season, it’s been one for the books. Based on the estimate of nearly 39 million pounds of scallops landed as of Sept. 13, the NEFMC staff has conservatively projected the fishery will finish the year with 56m pounds, Peros told the council at a meeting late last month. And counting the carry over and scallops harvested for research and observer purposes, the volume of landings could climb to 60m, Peros told Undercurrent.

That would be an improvement of nearly 13% over the 53.4m lbs landed in 2017.

Despite the abundance of scallops, the price at the Buyers and Sellers Exchange, the seafood auction in New Bedford, Massachusetts, appears to have ratcheted way up at the end of the year.

Read the full story at Undercurrent News

Scallops: NEFMC Receives 2018 Survey Overview; Framework 30 Progress Report

October 5, 2018 — The following was released by the New England Fishery Management Council:

During its late-September meeting in Plymouth, MA, the New England Fishery Management Council was presented with positive news about both the status of the Atlantic sea scallop resource and the outlook for the 2019 scallop fishing year. The Council:

  • (1) Reviewed results from the 2018 benchmark stock assessment for scallops;
  • (2) Received a summary of this year’s scallop surveys, which were conducted by five different research groups
  • (3) Reviewed the list of management measures under development in Framework Adjustment 30 to the Atlantic Sea Scallop Fishery Management Plan; and
  • (4) Discussed the Limited Access General Category (LAGC) Individual Fishing Quota (IFQ) trip limit.

2018 Benchmark Stock Assessment

The latest stock assessment for Atlantic sea scallops was conducted through the 65th Stock Assessment Workshop/Stock Assessment Review Committee (SAW/SARC). In short, assessment scientists concluded that in 2017:

  • The stock was not overfished and overfishing was not occurring;
  • Spawning stock biomass was at its highest level ever in the 1975 to 2017 time series;
  • Spawning stock biomass was (1) well above its “threshold” level, which is the lowest point allowed before the stock is deemed to be overfished, and (2) well above its biomass “target” level, which is the more desirable stock condition;

Read the full release here

NEFMC SSC – Listen Live – Wednesday, October 10, 2018, Scallop and Herring Issues

October 3, 2018 — The following was released by the New England Fishery Management Council:

The New England Fishery Management Council’s Scientific and Statistical Committee (SSC) will meet on Wednesday, October 10, 2018 to discuss scallop and herring issues.  The public is invited to attend in person or listen live via webinar or telephone.  Here are the details.

MEETING LOCATION:  Hilton Garden Inn, Boston Logan Airport, 100 Boardman Street, Boston, MA.  Hotel information is available here.

START TIME:  9:00 a.m.

WEBINAR REGISTRATION:  Online access to the meeting will be available at Listen Live. There is no charge to access the meeting through this webinar.

CALL-IN OPTION:  To listen by telephone, dial +1 (631) 992-3221. The access code is 285-275-351.  Please be aware that if you dial in, your regular phone charges will apply.

AGENDA:  The SSC will:

  • Review the results of the recent Atlantic sea scallop benchmark stock assessment and information provided by the Council’s Scallop Plan Development Team (PDT);
  • Recommend overfishing limits (OFLs) and acceptable biological catches (ABCs) for Atlantic sea scallops for the 2019 and 2020 fishing years with 2020 levels serving as defaults;
  • Review results of the recent Atlantic herring benchmark stock assessment and information provided by the Council’s Herring PDT;
  • Recommend 2019-2021 OFLs and ABCs for Atlantic herring using the Council’s proposed Amendment 8 ABC control rule, as well as the assessment and PDT information; and
  • Discuss other business as necessary.

COMMENTS:  The deadline for submitting written comments for consideration at this meeting is 5 p.m. on Friday, October 5, 2018.  Address comments to Council Chairman Dr. John Quinn or Executive Director Tom Nies and email them to comments@nefmc.org.  The address for mailing comments via the U.S. Postal Service is:  New England Fishery Management Council, 50 Water Street, Mill #2, Newburyport, MA  01950.

MATERIALS:  Meeting materials will be posted on the Council’s website at SSC October 10, 2018 documents.

QUESTIONS:  Contact Joan O’Leary at (978) 465-0492 ext. 106, joleary@nefmc.org or Janice Plante at (607) 592-4817, jplante@nefmc.org.

Why Maine lobstermen are looking to farmed scallops to stay afloat

October 3, 2018 — Marsden Brewer is a third-generation Maine fishermen who docks in Stonington.

“I’ve been involved in all the fisheries over my lifetime,” he said.

These days it’s mostly lobster, but he has fished cod and shrimp, and carted urchin to market. These once-vibrant species are now mostly off-limits after being overfished and weakened by climate change.

“I’ve seen the collapse and been part of the collapse of most of the fisheries. Not intentionally, but just the way it was set up to work, it wasn’t sustainable, and this project here is looking at sustainability in a fishery,” he said.

The project Brewer refers to is a 20-year effort to diversify his business by developing a profitable scallop farm. He used to scatter baby scallops in the bay, then trawl up the adults a couple years later. Success was limited though.

Now, from his 38-foot lobster boat moored more than a mile offshore, he’s experimenting with methods from Japan, where scallop farming is a long tradition.

Brewer, his son Bobby and Dana Morse, a marine extension agent with the University of Maine, winch up from the depths a long rope strung with 12-foot dark mesh bags. The collapsible bags are partitioned by horizontal shelves, giving them the look of giant Japanese paper lanterns. Inside, each level holds 20 or so squirting scallops.

Read the full story at Bangor Daily News

New Study Shows Climate Change Could Reduce Scallop Population

October 3, 2018 — Researchers in Massachusetts say under the worst case scenario, climate change could reduce the scallop population by more than 50 percent in just a few decades, which could be bad news for New Bedford’s lucrative fishing port.

In 2016, commercial fishermen landed more than $300 million worth of fish at the Port of New Bedford, and 85 percent of that value came from scallops.

A new study from Woods Hole Oceanographic Institution shows as carbon emissions in the atmosphere increase, so does the acidity in the ocean.

Jennie Rheuban, lead author of the report, said that could affect how well scallops can grow.

“Adults may actually be growing slower and calcifying less quickly under these acidified conditions because it’s more difficult for them to lay down calcium carbonate as a shell,” Rheuban said.

Rheuban said ocean acidification could also cause scallops to become more vulnerable.

“They aren’t able to swim quite as well when they’re experiencing acidified conditions, and so we hypothesize that under acidification, scallops may be more susceptible to predation,” she said.

Read the full story at Rhode Island Public Radio

New model looks at ocean acidification and sea scallop population drop

September 28, 2018 — Scientists at the University of Virginia and the Woods Hole Oceanographic Institution have created a new model looking at ocean acidification.

According to a release, fishermen harvest more than $500 million worth of Atlantic sea scallops each year off the East Coast, but this model predicts those fisheries may be in danger.

It says, as the levels of carbon dioxide increase in the atmosphere, the oceans become increasingly acidic, which could reduce the sea scallop population by more than 50 percent in the next 100 years, as a worst-case scenario.

The researchers say strong fisheries management and efforts to reduce CO2 emissions might slow or potentially even stop the trend.

“Rising atmospheric carbon dioxide levels pose a threat to many types of marine life, particularly shellfish,” said Scott Doney, an environmental sciences professor at UVA. “The ocean removes about a quarter of the carbon dioxide humans release to the atmosphere each year from fossil fuel use and deforestation. The resulting acidification of seawater makes it more difficult for shellfish like scallops and clams to build and maintain their shells.”

There are currently no studies that have been published showing the specific effects of ocean acidification on the Atlantic sea scallop, so to estimate the impact, Doney and his colleagues used a range of effects based on studies of related species.

The release says the new models lets scientists explore how plausible impacts of ocean acidification may change the future of the scallop population.

The researchers tested four different levels of impact on each of four different factors in the model, creating 256 different scenario combinations.

Read the full story at WCAV

WHOI Warns Sea Scallop Fisheries of Rises in Ocean Acidification

September 26, 2018 — More than $500 million worth of Atlantic sea scallops are harvested off the east coast of the United States.

Scientists at the Woods Hole Oceanographic Institution (WHOI), however, warn that fisheries bringing in this massive catch might be in danger because of carbon-dioxide levels increasing in the Earth’s atmosphere, causing the upper oceans to become increasingly acidic.

“What’s novel about our work is that it brings together models of changing ocean environments as well as human responses. It combines socioeconomic decision making, ocean chemistry, atmospheric carbon dioxide, economic development and fisheries management, said the study’s lead author Jennie Rheuban.

“We tried to create a holistic view of how environmental changes might play out across different aspects of the sea scallop fishery.”

The scientists say the condition could reduce the sea scallop population by more than 50-percent within the next 30 to 80 years.

The predictions were made using a model created by WHOI scientists, which combines existing data and models of four major factors: future climate change scenarios, ocean acidification impacts, fisheries management policies, and fuel costs for commercial fishermen.

WHOI says that the ocean absorbs more than a quarter of all carbon dioxide in the atmosphere. They say that the acidity caused by this can corrode the shells of clams, oysters, and scallops, and event prevent their larvae from forming shells at all.

Read the full story at CapeCod.com

Ocean acidification may reduce sea scallop fisheries

September 24, 2018 — Each year, fishermen harvest more than $500 million worth of Atlantic sea scallops from the waters off the east coast of the United States. A new model created by scientists at the Woods Hole Oceanographic Institution (WHOI), however, predicts that those fisheries may potentially be in danger. As levels of carbon dioxide increase in the Earth’s atmosphere, the upper oceans become increasingly acidic—a condition that could reduce the sea scallop population by more than 50% in the next 30 to 80 years, under a worst-case scenario. Strong fisheries management and efforts to reduce CO2 emissions, however, might slow or even stop that trend.

The , published in the journal PLoS One, combines existing data and models of four major factors: future climate change scenarios, ocean acidification impacts,  policies, and fuel costs for fishermen.

“What’s novel about our work is that it brings together models of changing ocean environments as well as human responses” says Jennie Rheuban, the lead author of the study. “It combines socioeconomic decision making, ocean chemistry, atmospheric carbon dioxide, economic development and fisheries management. We tried to create a holistic view of how environmental changes might play out across different aspects of the  fishery,” she notes.

Read the full story at PHYS.org

 

Scallop row: UK and French fishermen strike a deal

September 18, 2018 — The agreement, starting on Tuesday, will see larger British boats withdrawing in return for greater fishing rights elsewhere.

In August, boats collided and fishermen threw stones at each other as the French accused UK boats of depleting scallop stocks.

British fishermen said they were legally entitled to fish there.

Under the terms of the new deal, UK scallop dredgers over 15m long will leave the scallop beds off the coast of Normandy from midnight for six weeks.

In return, France will transfer fishing rights for scallops in areas such as the Irish Sea.

Smaller British boats are not restricted under the deal and can continue to fish in the Bay of Seine, where the row broke out.

Fisheries minister George Eustice said: “I commend the UK fishing industry for its patience throughout negotiations and welcome this pragmatic outcome.

Read the full story at BBC News