Saving Seafood

Why Are Birds and Seals Starving in a Bering Sea Full of Fish?

November 4, 2019 — The shipment arrived airfreight: 47 seabird carcasses collected by the Bering Strait villagers of Shishmaref.

Marine biologist Gay Sheffield drove to the airport on an August day to pick up the grisly cargo and bring it back to a laboratory just off the main street of this northwest Alaska town.

Inside a cardboard box, Sheffield found mostly shearwaters, slender birds with narrow wings — also kittiwakes, crested auklets, thick-billed murres, a cormorant and a horned puffin. Most were painfully skinny, bones protruding like knife-edged ridges.

“They starved to death,” Sheffield said. “Why?”

The birds should have been able to fatten on small fish, krill and other food that typically abound in the northern Bering Sea, a body of water so rich in marine life that gray whales, after they winter off Mexico, swim more than 5,000 miles north to feed here each summer.

But as climate change warms the die-offs of seabirds and marine mammals have been on the rise. The grim tally includes a nearly fivefold increase in ice-seal carcasses spotted on shore, strandings of emaciated gray whales, and near the St. Lawrence Island village of Savoonga, a discouraging spectacle: auklets abandoning seaside nests as their chicks succumb to hunger.

Read the full story at the Pulitzer Center

Agencies still looking for answers in marine mammal die-off

November 4, 2019 — The National Marine Fisheries Service is still trying to figure out what is causing marine mammals to die at high rates in Alaska.

In September, the National Oceanic and Atmospheric Administration declared an unusual mortality event for three types of seals in the Arctic, including bearded, ringed and spotted seals in the Bering and Chukchi seas.

“Our normal stranding numbers for ice seals is about 20 to 30 a year,” said NOAA Marine Biologist Barbara Mahoney. “So we are dealing with more than five times the dead animals that we’ve had in the past.”

But it isn’t just seals.

In May, NOAA declared an unusual mortality event for gray whales along the West Coast from Mexico to Alaska. As of Sept. 30, the agency reported a total of 121 dead gray whales in 2019.

Read the full story at KTVA

NOAA trawl surveys estimate more cod, pollock in Bering Sea

October 29, 2019 — The results from recent US government trawl surveys of the Bering Sea are in and they estimate the biomass of pollock and Pacific cod have risen relative to previous years.

Two vessels — Alaska Knight and Vesteraalen — completed summer surveys of the eastern and northern Bering Sea from the US National Oceanic and Atmospheric Administration’s (NOAA) Alaska Fisheries Science Center.

The AFSC said in a presentation that the trawl surveys led scientists to estimate the pollock biomass at 5.46 million metric tons for the Eastern Bering Sea, a 75% year-on-year rise and 1.17m metric tons for the Northern Bering Sea, compared to the last major survey, which was performed in 2017.

For Pacific cod, the surveys led to an increased biomass estimate of 517,000t in the Eastern Bering Sea, a 2% y-o-y rise and an estimate of 368,000t for the Northern Bering Sea, up 30% from 2017.

Read the full story at Undercurrent News

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

ALASKA: Black cod bycatch in the Bering Sea surges

October 22, 2019 — Trawlers in the Bering Sea have hauled up some 2,500 metric tons of black cod in bycatch circa the end of last month, according to a NOAA fisheries report.

An Alaska Public Media report suggests that small-boat fishermen who have bought black cod (also known as sablefish) fishing rights are frustrated that there will be fewer fish to harvest after the accidental catch of the trawlers.

Read the full story at Seafood Source

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

ALASKA: There’s a new fight over Bering Sea black cod. Warming water may be to blame.

October 10, 2019 — Fish politics in Alaska usually get serious when there aren’t enough fish to go around. But a new fight is brewing over black cod because there are so many of them – possibly as a result of the ocean’s warming waters.

Record numbers of young black cod, also known as sablefish, are swimming off Alaska’s coast; scientists estimate that this group of fish, which had huge reproductive success in 2014, is twice the size of the next-largest on record, from 1977.

The small-boat fishermen who catch black cod, many of whom live in Southeast Alaska, are eagerly waiting for the young fish to grow larger and commercially valuable. But they’re getting frustrated seeing increasing numbers of black cod caught accidentally, as bycatch, by the Seattle-based trawlers that target lower-value species in the Bering Sea, like the pollock that go into McDonald’s Filet-O-Fish sandwiches.

“This recruitment event is what we’re counting on to keep the fishery going for the next 10 or 15 years,” said Tad Fujioka, a Sitka fisherman who decided to buy black cod fishing rights a few years ago, in part because of the boom in their numbers. “We need to save these fish for years to come.”

Read the full story at Alaska Public Media

Genetic Evidence Points to Rapid, Large-Scale Northward Shift of Pacific Cod During Recent Climate Changes

October 10, 2019 — The following was released by NOAA Fisheries:

New genetic research suggests that unprecedented summer abundances of Pacific cod in the northern Bering Sea were due to escalating movement from their core habitat under recent warm conditions.

Until recently, Pacific cod were rarely encountered in the northern Bering Sea. Fishery surveys in the 1970s reported “trace amounts” of cod there. A 2010 Alaska Fisheries Science Center survey estimated that the entire northern population amounted to about 3% of the large southeastern Bering Sea stock that supported a valuable commercial fishery.

Then in 2017, the summer survey recorded dramatically higher abundances in the north: a 900-fold increase since 2010. In the same year, southeastern Bering Sea abundances were down 37% from 2016. Strikingly, the increase in the north nearly matched the decrease in the southeastern Bering Sea.

A 2018 survey revealed an even more remarkable shift: there were more cod in the northern than southeastern Bering Sea.

Read the full release here

ALASKA: Fisheries managers announce crab quotas, season closures

October 8, 2019 — With the fishing season starting next week, the Alaska Department of Fish and Game has released crab quotas for Bristol Bay and the Bering Sea.

The total allowable catch for red king crab is 3.8 million pounds. That’s about 12 percent less than last season, which was already the lowest since 1996.

Meanwhile, the tanner crab season has been closed entirely due to below-threshold estimates of mature males.

Managers have also canceled the St. Matthew Island blue king crab fishery, which has been declared “overfished,” and continued the longtime closures for Pribilof Island red and blue king crab, which have fallen below federal minimums for two decades.

Read the full story at Alaska Public Media

North Pacific Fishery Management Council meets next week in Homer

September 25, 2019 — Federal stewards of Alaska’s fisheries will meet in Homer for the first time since 1983 as they continue their pursuit of involving more people in policy making.

From Sept. 30 to Oct. 10, the Spit will be aswarm with entourages of the 15-member North Pacific Fishery Management Council, which oversees more than 25 stocks in waters from 3 to 200 miles offshore, the source of most of Alaska’s fish volumes.

The NPFMC is one of eight regional councils established by the Magnuson-(Ted) Stevens Fishery Conservation and Management Act in 1976 that booted foreign fleets to waters beyond 200 miles and “Americanized” the Bering Sea fisheries.

“The council certainly is interested in engaging more stakeholders, particularly from rural and Alaska Native communities, and by going to more coastal communities, it allows them more opportunity for input into the process,” said Dave Witherell, council executive director, who added that in recent years the council has expanded beyond Kodiak, Juneau and Sitka to convene in Nome and Dutch Harbor.

Read the full story at the Anchorage Daily News