Saving Seafood

Salmon and other migratory fish play crucial role in delivering nutrients

January 4, 2024 — Yukon River chinook salmon boast the longest freshwater migration in North America, traveling more than 3,000 kilometers (nearly 2,000 miles) from their spawning grounds in Canada to the mouth of the Bering Sea in Alaska. A smolt preparing to enter the ocean is small enough to lay across the palm of your hand. But by the time it returns four or five years later to swim back upriver, it will be about a meter long (more than 3 feet), and weigh 14 kilograms (more than 30 pounds).

Not all Pacific salmon (Oncorhynchus spp.) travel as far, or grow as big, as the Yukon River chinook (O. tshawytscha), but they all make the journey from freshwater spawning grounds to the ocean, then return to their natal streams to spawn and then die en masse. Those remarkable journeys connect and nurture distant ecosystems.

That’s because salmon gain most of their body mass in the ocean, and when spawning adults travel back inland to die, they ferry energy and nutrients from marine to terrestrial ecosystems. Those migrating salmon are eaten by bears, eagles and a slew of other predators. Scavengers devour carcasses left rotting in streambeds, or discarded in the forest along streams by other carnivores. Ultimately the nutrients diffuse throughout the ecosystem. The young return to the sea to reinvigorate the cycle, in a dance that has lasted unknown centuries — until modern humans began interfering.

Today, researchers can trace the pathway of these nutrients using the “salmon signature,” an isotope of marine nitrogen associated with the migrating fish. John Reynolds, a professor of aquatic ecology and conservation at Canada’s Simon Fraser University, has been searching for that salmon signature in the temperate rainforest of British Columbia’s central coast for more than 15 years.

His lab has published numerous studies showing that nutrient additions from salmon influence wildflower development; the productivity of salmon berry bushes; the territory size of Pacific wrens (Troglodytes pacificus); the density of salmon and other freshwater fish; and more. The salmon signature can even be seen from space: on satellite imagery, the greenness of riparian forests is higher following years of high salmon abundance.

Read the full article at Mongabay

ALASKA: Southeast chinook stocks expected to be low again in ’24

December 24, 2023 — It’s likely to be another weak year for king salmon returns to the major river systems of Southeast Alaska in 2024.

The Alaska Department of Fish & Game issued its 2024 Southeast Alaska Chinook Salmon forecasts on Monday (12-18-23).

Of the 11 chinook stocks in the region, only the Chilkat River is expected to have an adequate number of chinook returning to spawn. Nevertheless, this number – known as escapement – is still in the middle of the range, and could be lower depending on how many fish are harvested before they get to the river.

The Alaska Department of Fish & Game has adopted action plans to try and limit the catch of king salmon bound for Southeast Rivers, but some are always intercepted.

However, ADF&G assessment biologist Philip Richards says overharvest is probably not the problem.

Read the full article at KCAW

Salmon, rivers hit hard by recent Washington floods

December 17, 2023 — The atmospheric river that hit the Pacific Northwest in early December took a heavy toll on salmon, biologists working with Puget Sound tribes say.

You might think all the rain that comes with the storm systems known as atmospheric rivers or Pineapple Expresses would be good for fish.

But tribal biologists say major floods have hit salmon-bearing rivers hard two out of the past three autumns, at a time when freshly laid Chinook salmon eggs are incubating in their underwater nests.

“We’ve had two flooding events that, over three years, have hit during this time that we know all the Chinook eggs are in the gravels,” said fisheries researcher Mike LeMoine with the Skagit River System Cooperative, a project of the Swinomish and Sauk-Suiattle Tribes. “It’s right after Chinook complete their spawning.”

Extreme flows can kill salmon eggs in two ways: scouring eggs and their shallow nests out of a riverbed or entombing them in mud.

“A big event will deposit a bunch of sediment over the top of the eggs and smother them, and they call that entombment,” said Jason Griffith, a Stillaguamish Tribe of Indians biologist.

Griffith said a spawning salmon will bury her eggs beneath a few inches of river gravel, enough to protect the next generation from predators but not from the forces unleashed when rivers rage.

“The river will cut down several inches to several feet during one event and could displace those eggs, and that kills them,” Griffith said.

Based on studies of past years’ floods, Griffith said he expected only 2% to 4% of Chinook eggs in the Stillaguamish River to survive this winter, less than a third of the 15% survival rate in a good year.

“High flows basically cause poor survival, especially for Stillaguamish Chinook. So three to five years from now, we will see lower returns of Stillaguamish Chinook,” Griffith said

Read the full article at KUOW

ALASKA: Battle flares anew over Alaska subsistence fisheries

November 13, 2023 — Abysmal chinook and chum salmon returns to Western Alaska have made the state’s jurisdiction in fisheries management a prominent target on the legal radar again. Though Alaska’s subsistence challenges have been the bane of salmon management in some areas for more than a half century, recent run failures on the Yukon and Kuskokwim Rivers have rekindled arguments in the courts.

Most recently, a case filed in 2022 has gained momentum and will argue whether the State of Alaska and the Alaska Division of Fish and Game, or the federal government, calls the shots in setting subsistence openings and closures on a 191-mile stretch of the river. 

“They’re literally fighting over crumbs here,” says Rep. Mary Sattler Peltola, D-Alaska.  “This is a legal battle over crumbs. All subsistence harvesting captures less than 1 percent of Alaska’s resources. When I was growing up it was 2 percent, which was negligible; now it’s less than 1 percent, and when you’re talking about subsistence on federal land, that’s infinitesimal.”

The case is the latest in court gyrations that promise to test the validity of a landmark court ruling that was never settled to anyone’s satisfaction in the 1990s. That case, commonly referred to as “Katie John,” was named after the woman who challenged a state law of 1964 which prevented her from operating a fish wheel for her winter’s salmon. That ruling was supposed to have defined “subsistence priority” in fisheries management.

The suit, originally filed in 1985 by Katie John and other parties, challenged the state management system in a plea for subsistence rights. What ensued since then has been a fight between state and federal courts in defining what constitutes public lands, submerged lands, navigable waters on those lands and which government (state or federal) has rightful management of those waters to comply with language in the Alaska National Interest Lands Conservation Act (ANILCA). 

An equally hefty argument has been the definition of who among Alaska residents has rightful access to natural resources – and when. As the Katie John case gained momentum in federal courts, an Alaska state Supreme Court decision in another case, McDowell v. State, had rendered that natural resources are the property of all residents: urban, rural, Native and non-Native, and that relegating rights to specific groups violated the state constitution.

Read the full article at National Fisherman

EPA sides with tribes on petition to regulate toxic tire chemical that kills salmon

November 10, 2023 — In August, three Native tribes — two in Washington, and one in California — petitioned the EPA to regulate the use of 6PPD in tire manufacturing.

6PPD has been in use for decades as a bonding agent to prevent cracking and general wear and tear in tires. When the surface of the tire reacts with ozone or oxygen, it turns into a new compound called 6PPD-Quinone.

“6PPD-Q, which we’ve now discovered, is the second most toxic chemical ever evaluated to aquatic life,” said Elizabeth Forsyth, senior attorney with Earthjustice’s Biodiversity Defense Program, who worked on the petition.

The primary result of exposure is called urban runoff mortality syndrome, which kills up to 100% of coho salmon returning to streams in an urban watershed.

The Port Gamble S’Klallam Tribe, Puyallup Tribe, and Yurok Tribe in California signed onto the petition asking the EPA to regulate the use of 6PPD in tire manufacturing. Proponents hope regulation will push tire manufacturers to develop alternatives to 6PPD. A letter of resolution for support was also signed by a coalition of 57 Northwest tribes.

Read the full article at KUOW

ALASKA: Alaska Salmon Research Task Force issues progress report, seeks public input

October 26, 2023 — Beset by changing climate, population swings and declining salmon returns in some regions, Alaska salmon are under unprecedented pressures.

The Alaska Salmon Research Task Force is now seeking public comment on an early version of their draft report to help build its work plan.

In an announcement through the National Marine Fisheries Service, task force members said they need advice on “existing knowledge, research gaps, and applied research that is needed to better understand the increased variability and declining salmon returns in some regions of Alaska.”

The task force is especially interested in hearing comments about Indigenous and traditional knowledge that can be applied to the Pacific salmon life cycle framework now under development by the task force.

Comments can be submitted online with this form. People can also comment in person during the November 14-15, 2023 Alaska Salmon Research Task Force meeting in Anchorage. The session will be held at the William A. Egan Civic & Convention Center, Summit Hall (Lower Level), 555 W 5th Ave, Anchorage, AK 99501.

Read the full article at the National Fisherman

OREGON: Struggling salmon fishermen getting federal help in Oregon and along West Coast, but it may be too late

October 24, 2023 — The federal government will dole out disaster relief to commercial Chinook salmon fishermen who have weathered a string of poor seasons on the Oregon Coast. But some fishermen say the help won’t be enough to rescue the fast-shrinking industry.

Earlier this month, two years after a request by Oregon’s governor, the U.S. Department of Commerce declared a Chinook fishery disaster for 2018, 2019 and 2020, years when local salmon populations plummeted. Fishing regulators blame the drop on poor habitat conditions and climate change near the California-Oregon border, where thousands of Chinook migrate from the ocean up rivers and streams to spawn.

Read the full article at OPB

Dispute about salmon and whales between Alaska and Washington again before federal regulators

October 10, 2023 — The fishing of chinook or king salmon is back on the desk of the National Marine Fisheries Service, part of the whipsaw rulings this past summer that saw the king salmon season shut down — and then reinstated — as a case brought by environmentalists wound its way through the courts.

NMFS issued a notice Wednesday it is beginning work on an Environmental Impact Statement (EIS) and a review of alternatives to its incidental take statement (ITS). The ITS is the amount of take allowed to occur in compliance with the Endangered Species Act.

NMFS is accepting public comments through noon on Nov. 20, said Gretchen Harrington, assistant regional administrator for the Sustainable Fisheries Division. The EIS is required under the National Environmental Policy Act (NEPA).

The case, Wild Fish Conservancy v. Quan, was filed in U.S. District Court in March 2020. Lawyers for WFC argued fishery managers and representatives of the Pacific Salmon Treaty were ignoring their own research by allowing fishing that harmed the endangered king salmon and the southern resident killer whale population, which feeds on them.

Read the full article at Juneau Empire

ALASKA: Why sockeye flourish and chinook fail in Alaska’s changing climate

July 27, 2023 — University of Washington ecologist Daniel Schindler is at the mouth of a salmon stream at Lake Nerka, in Southwest Alaska. It’s roiling with fish.

“They sort of pile up in balls of thousands of fish for a couple of weeks. I think that’s when they’re doing their final maturation,” he said of the sockeye mob. “They’re jostling with each other and splashing, occasionally jumping.”

Schindler is in his 27th year of field work, studying Bristol Bay sockeye. This year is on par with the sockeye abundance Bristol Bay has seen in the last decade, he said, which is far higher than the historical average.

The unlikely hero of this story of plenty: Climate change.

“We tend to think of climate warming is bad news for wild animals,” he said. “But for sockeye Bristol Bay warming has been good news.”

For other salmon, climate change is a villain.

Chinook – or king – salmon are in terrible decline all over the state, and especially dire on the Yukon River. Meanwhile, sockeye – or reds – are having another banner year in Bristol Bay, and everywhere.  Scientists say they don’t know exactly why one salmon species is doing so well while the other is in crisis, but some clues are coming into sharper focus.

One key difference, Schindler said, is what kind of river habit each species needs.

Sockeye use lakes as their nurseries. Since the 1980s the water in those lakes has warmed significantly. The warmth stimulates plankton to reproduce more, and young sockeye eat plankton. Fifty years ago, Schindler said, a lot of sockeye spent two years in Lake Nerka before heading out to sea.

“And now they grow so fast that nearly all of them leave after a single year in freshwater, which is a reflection of the fact that the freshwater systems have become more productive,” he said.

Read the full article at Alaska Public Media