Saving Seafood

Genetic studies confirm Alaska cod stocks pushing north

October 25, 2019 — Biologists were shocked in 2017 when they found that the numbers of Pacific cod had risen exponentially in the northern Bering Sea off the coast of Alaska. Now, researchers at NOAA’s Alaska Fisheries Science Center have used genetic testing to prove that those fish, enabled by warming waters and a lack of sea ice, have moved north from the southeastern Bering Sea.

Surveys as recent as the 1970’s revealed “trace amounts” of cod in the northern Bering Sea, according to a brief released by NOAA. Major Alaska cod fisheries in the past decades have operated in the southeastern Bering Sea, the Aleutian Islands, and the Gulf of Alaska, which meant management biologists conducted only sporadic bottom trawl surveys in the north.

Read the full story at Seafood Source

Efforts underway to streamline fisheries disaster relief

October 23, 2019 — With an increasing number of fisheries disaster requests coming from all over the United States, members of Congress and the federal government are looking for ways to improve the relief process.

Summer 2018 brought disappointing results for many fishermen across Alaska, particularly for sockeye salmon fishermen in the central Gulf of Alaska, but only two fisheries were officially granted federal disaster declarations: the 2018 Chignik sockeye salmon run and the 2018 Pacific cod fishery. While many other fishermen at least got a few fish to fill their wallets, Chignik fishermen had virtually no season, and Gulf of Alaska Pacific cod fishermen saw their total allowable catch reduced by 80 percent from 2017 because of low abundance.

U.S. Secretary of Commerce Wilbur Ross announced a dozen commercial fishery disaster declarations Sept. 25 for the 2018 calendar year. Congress appropriated $165 million for fisheries disaster relief, to be allocated according to the losses in revenue for the selected fisheries.

It’s the second time in recent years there have been disastrously poor returns to some fisheries. In 2016, the failed pink salmon run across the Gulf of Alaska left many fishermen holding empty nets, particularly in Kodiak and Prince William Sound, resulting in a disaster declaration in 2017 and eventually $56 million in relief funds for stakeholders.

Read the full story at the Alaska Journal of Commerce

A fish mystery solved using genetic testing

October 17, 2019 — The population of cod in the Northern Bering Sea has increased immensely since 2010, and scientists are using fish DNA to find out why.

Think of it like a genetic ancestry test, but for fish.

Until recently, pacific cod were rarely found in the Northern Bering Sea. A 2010 survey showed cod made up only three percent of the entire fish population. That’s been changing, fast.

A survey in the summer of 2017 showed that number shot up 900 percent.

Ingrid Spies is a research fisheries biologist who led the way on this research to determine whether the population spike is evidence of a growing population or of an existing population migrating from elsewhere?

One thought was that cod could have migrated from Russia or the Gulf of Alaska, where they observed cod numbers decline significantly in 2017. Scientists were able to come to a conclusive answer to the question using genetic testing.

Read the full story at KTUU

New Seafloor Maps Reveal Habitat Sculpted by Ancient Glaciers

September 24, 2019 — The following was released by NOAA Fisheries:

New seafloor maps show for the first time the course of ancient ice masses. They show how they shaped essential habitat for the western Gulf of Alaska’s abundant fish, seabirds, and marine mammals.

Scientists wove together historical and modern data—from century-old hand-drawn charts to modern multibeam surveys. They created a highly detailed view of the seafloor and its geological features. The results will help scientists better understand the habitat requirements of many species and the oceanographic processes that influence their success.

The western Gulf of Alaska is both ecologically and economically important. Shelikof Strait, a major feature of the region, holds special importance as spawning ground for the Gulf’s biggest stock of walleye pollock. Together with other Alaska pollock stocks, they are the target of the world’s largest fishery. Shelikof Strait is also home to rare species like the mysterious Pacific sleeper shark. Within the Gulf of Alaska bottom trawl survey area, almost half of all sleeper shark occurrences are in Shelikof Strait.

Despite its importance, until now much of the western Gulf of Alaska had not been mapped in sufficient detail to describe the geological features of this vital habitat. To create and analyze new maps, NOAA Fisheries and U.S. Geological Survey scientists teamed up to bring together geographical and geological expertise.

Read the full release here

Salmon studies: North Pacific project trawls for data, funding

May 24, 2019 — “I like to say to people that after 100 years of research, we know a lot about salmon. But what we need to know most, we mostly don’t know,” said fisheries scientist Richard Beamish following the first International Year of the Salmon expedition this year. “We can’t forecast how a changing ocean ecosystem is going to affect salmon.”

Beamish, who organized the expedition and is an emeritus scientist at Fisheries and Oceans Canada’s Pacific Biological Station in Nanaimo, British Columbia, is seeking $1.5 million from governments, the private sector and nonprofit organizations for a 2020 expansion. The program’s researchers would like to carry the program into 2021 to continue their work on North Pacific salmon stocks and climate change.

The 2019 expedition, which was a signature project of the program, kicked off in February with an international winter salmon study in the deepest regions of the Gulf of Alaska. The 2020 expedition would put two Russian trawlers on the water to expand the work of a pilot 25-day single-vessel survey that ran early this year in the Gulf of Alaska.

A bigger survey is in the works for 2021. It would involve five ships surveying the entire North Pacific Ocean. The cost of that project is estimated at $10 million.

Read the full story at National Fisherman

ALASKA: Study pinpoints trend toward fisheries specialization

May 10, 2019 — Commercial fishermen in Alaska have gotten older in the past three decades. As it turns out, they’ve become more specialized, too.

Fewer permits overall are in the water; between the early 1990s and 2014, commercial fishing permits in Alaska decreased by 25 percent. On top of that, fewer individual fishermen are moving between fisheries.

From 1988-2014, the number of individuals holding multiple permits declined from 30 percent to 20 percent, according to a study published in the journal Fish and Fisheries.

The bottom line: fishermen are increasingly putting all their economic eggs into one basket, and that makes them more vulnerable to the ups and downs of fishing.

The study was born out of a workgroup that met through the National Center for Ecological Analysis and Synthesis at the University of California Santa Barbara, said co-author Anne Beaudreau, an associate professor of fisheries at the University of Alaska Fairbanks.

The original intent was to study the long-term effects of the 1989 Exxon Valdez oil spill, but the data on fisheries specialization arose out of that work, she said.

“As we worked on this, we realized there are so many things that have caused long-term changes in the Gulf of Alaska; in the fisheries, it’s really hard to see the long-term effects of the oil spill,” she said. “A lot of the focus of the working group was on the biological effects … this paper sort of came out of the end of that.”

Read the full story at the Alaska Journal of Commerce

Overlooked jellyfish play big role in Gulf of Alaska

April 15, 2019 — “Jellyfish have superpowers,” assured Heidi Mendoza-Islas, a graduate student at the University of Alaska Fairbanks College of Fisheries and Ocean Sciences.

The voracious carnivores will eat almost anything that fits into their mouths. When conditions are good, they grow fast and multiply. When conditions aren’t ideal, baby jellies can transform into cysts and wait it out.

So it is no surprise that jellyfish have been successful predators in the Gulf of Alaska, Mendoza-Islas said. But few studies have focused on the role jellyfish play in the Gulf’s ecosystem or how jellyfish affect commercially important finfish, such as pollock. Mendoza-Islas wants to change that.

Read the full story at the Fairbanks Daily News-Miner

Alaska Fish and Game forecasts a 2019 salmon catch of 213.2 million fish

April 10, 2019 — Alaska fishermen could catch 85 percent more salmon this year (nearly a hundred million more) if state forecasts hold true.

That’s good news for fishermen in many Gulf of Alaska regions who in 2018 suffered some of the worst catches in 50 years.

The Alaska Department of Fish and Game is predicting a total salmon catch of 213.2 million fish for 2019, compared to about 116 million salmon last year. The increase comes from expectations of another big haul of sockeyes, increases in pinks and a possible record catch of chum salmon.

The harvest breakdown calls for 112,000 chinook salmon in areas outside of Southeast Alaska. The catch for the Southeast troll fleet, which is determined by a treaty with Canada, will be 101,300 kings, a 5,600-fish increase.

Read the full story at the Anchorage Daily News

 

International study to shed light on the mysterious lives of salmon at sea

March 29, 2019 — Scientists know surprisingly little about a salmon’s life outside of their freshwater and nearshore habitats, but an ambitious study is attempting to change that. The International Year of the Salmon put together an expedition with 21 international scientists in the Gulf of Alaska, all in the hopes of understanding more about the mysterious lives salmon lead in the open ocean.

The International Year of the Salmon is a quasi-international organization aimed at bringing attention to all five species of Pacific salmon as warming ocean temperatures affect their survival at sea.

“We will set the conditions that we need for salmon and people to be resilient as we’re dealing with this change in climate,” Mark Saunders explained.

Saunders works for the North Pacific Anadromous Fish Commission and he helped establish the International Year of the Salmon initiative. The project is brining scientists, fishery managers and policy makers together from Japan, Russia, the U.S. and Canada in the hopes of making salmon management in the Pacific Ocean an international effort.

“We’re looking for those projects that we believe are transformational and then going after the funding to do it,” Saunders added.

One of the projects was a five-week expedition that acted as a first-of-its-kind stock survey for salmon in the Gulf of Alaska.

Read the full story at Alaska Public Media

Predicting marine heatwaves can have economic implications

March 6, 2019 –The Gulf of Alaska is once again experiencing a marine heatwave. This follows the infamous warm-water event known as the “blob,” that formed back in 2014, which scientists have tied to seabird die-offs and declining Pacific cod stocks.

Scientists around the world are trying to predict these events, but there are economic implications to forecasting the future.

Scientists around the world are working to understand the impacts of marine heatwaves as they become more common. They also want to predict when and where the world’s oceans will heat up.

“If I gave you this information about the future, what would you possibly even do with it?” Alistair Hobday said. “And people’s first reaction is, ‘nothing, I don’t know what I would do.’”

Hobday is a research scientist with Australia’s Commonwealth Scientific and Industrial Research Organisation. Hobday said the predictive models for marine heatwaves are about 60 percent accurate currently, slightly better than a flip of a coin.

He wants to boost that number to 80 percent, and he said marine heatwave forecasts have practical applications.

Read the full story at Alaska Public Media