Saving Seafood

NOAA publishes global list of fisheries and their risks to marine mammals

April 3, 2018 — The U.S. National Oceanic and Atmospheric Administration (NOAA) has published the first list of foreign fisheries, detailing the risks that commercial fishing around the world pose to marine mammals.

“The [List of Foreign Fisheries] is an important milestone because it provides the global community a view into the marine mammal bycatch levels of commercially relevant fisheries,” according to a statement published on the NOAA Fisheries website.

“In addition, it offers us a better understanding of the impacts of marine mammal bycatch, an improvement of tools and scientific approaches to mitigating those impacts, and establishes a new level of international cooperation in achieving these objectives,” the statement says.

The register is a step toward meeting specific requirements in the Marine Mammal Protection Act on the sources of fish imported into the U.S. It includes nearly 4,000 fisheries across some 135 countries. These fisheries have until 2022 to demonstrate that the methods they use to catch fish, as well as other marine animals such as coral, crabs, lobsters and shellfish, either aren’t much of a danger to marine mammals, or they employ comparable methods and mitigation measures to similar operations in the United States.

Fishing nets can exact a high toll on animals that fishers don’t intend to catch. Nets themselves can trap dolphins, porpoises, seals and sea lions as bycatch. In Mexico, a fishery targeting the totoaba for its swim bladders that fetch high prices in Asian markets has decimated the tiny porpoise known as the vaquita (Phocoena sinus). Perhaps as few as 12 remain in the wild.

The lines from traps, pots and nets can also ensnare even the largest animals in the ocean. Recent research has shown that almost every one of the estimated remaining 451 North Atlantic right whales (Eubalaena glacialis) either is toting errant fishing equipment around or it bears the scars of entanglements with gear. These ropes can cause injuries to right whales and other animals that can lead to infection or death. And towing pieces of gear that can be longer than the whale’s body causes what scientists call “parasitic” drag that can interfere with the ability to find food.

Read the full story at Mongabay

 

Species battle pits protected sea lions against fragile fish

March 23, 2018 — The 700-pound sea lion blinked in the sun, sniffed the sea air and then lazily shifted to the edge of the truck bed and plopped onto the beach below.

Freed from the cage that carried him to the ocean, the massive marine mammal shuffled into the surf, looked left, looked right and then started swimming north as a collective groan went up from wildlife officials who watched from the shore.

After two days spent trapping and relocating the animal designated #U253, he was headed back to where he started — an Oregon river 130 miles (209 kilometers) from the Pacific Ocean that has become an all-you-can-eat fish buffet for hungry sea lions.

“I think he’s saying, ‘Ah, crap! I’ve got to swim all the way back?'” said Bryan Wright, an Oregon Department of Fish and Wildlife scientist.

It’s a frustrating dance between California sea lions and Oregon wildlife managers that’s become all too familiar in recent months. The state is trying to evict dozens of the federally protected animals from an inland river where they feast on salmon and steelhead that are listed under the Endangered Species Act.

The bizarre survival war has intensified recently as the sea lion population rebounds and fish populations decline in the Pacific Northwest.

The sea lions breed each summer off Southern California and northern Mexico, then the males cruise up the Pacific Coast to forage. Hunted for their thick fur, the mammals’ numbers dropped dramatically but have rebounded from 30,000 in the late 1960s to about 300,000 today due to the 1972 Marine Mammal Protection Act.

Read the full story from the Associated Press at ABC News

 

Sea lions keep eating the Northwest’s endangered fish

March 22, 2018 — NEWPORT, Ore. — Two species of fish listed as threatened under the Endangered Species Act are facing a growing challenge in Oregon from hungry sea lions.

The federally protected California sea lions are traveling into the Columbia River and its tributaries to snack on fragile fish populations.

After a decade killing the hungriest sea lions in one area, wildlife officials now want to do so at Willamette Falls, a waterfall in the Willamette River about 25 miles (40 kilometers) southeast of Portland.

The falls represent a new battleground in a bizarre survival war between fish and sea lions in the Pacific Northwest.

Read the full story from the Associated Press at the New York Post

 

Pacific Heat Wave Known As ‘The Blob’ Appears To Be In Retreat

March 16, 2018 — Ocean conditions off the Pacific Northwest seem to be returning to normal after a three-year spike in water temperature.

It’s promising long-term news for fishermen who are looking ahead in the short term to yet another year of low salmon returns.

A report from the National Oceanic and Atmospheric Administration (NOAA) outlined the latest ocean observations for the organization that sets salmon catch limits off the West Coast. The Pacific Fishery Management Council will set those limits in early April.

The extended marine heatwave of the past few years has been nicknamed “the Blob.”

“The high pressure system over the North Pacific basically got stalled out and stuck there. And so the ocean warmed up about 6 degrees Fahrenheit,” NOAA’s Toby Garfield said.

Then a strong El Niño came through that reinforced these conditions.

“There have been a number of these events, these marine heat waves, that have occurred in the North Pacific. But the one we had in ’13, ’14, ’15 was the by far the largest in the record going back 45 years,” Garfield said.

And the effect on sea life was serious. Whales, sea lions and seabirds starved because the warm water didn’t support tiny nutrition-rich plankton called copepods at the base of the food chain.

Within the past year, the El Niño effect has dissipated, and other longer-term climate cycles are shifting back toward a more average level.

Read the full story at OPB

 

Zero Dollars for Marine Mammals?

February 27, 2018 — The future of marine mammals is at risk in U.S. waters. President Trump’s proposed budget for fiscal year 2019 would eliminate the Marine Mammal Commission. With an annual operating budget of $3.4 million, which comes to just over one penny per American per year, the Marine Mammal Commission has for 45 years been assiduously developing science and policy to protect seals, sea lions, dolphins, whales, dugongs and walruses. Through the 1972 Marine Mammal Protection Act (MMPA), Congress charged the commission with providing independent oversight of marine mammal conservation policies and programs being carried out by federal regulatory agencies. Obviously, with a proposed budget of zero dollars, it would be impossible to execute the federally mandated objectives of fostering sustainable fisheries (through the Magnuson-Stevens Fishery Conservation and Management Act [MSA]) and protecting endangered species (through the Endangered Species Act [ESA]).

Marine mammals are more than just lovable creatures. They are important components of productive marine and coastal ecosystems that overall generate $97 billion of the gross domestic product. Whales function as ecosystem engineers by cycling vital nutrients between deeper and surface waters in the oceans. Without this nutrient cycling, oceans would produce less plankton and phytoplankton, which would eventually mean less fish. Also, through complex food-web interactions, marine mammals help to regulate fish populations. For example, marine-mammal–eating killer whales (often called “transient” killer whales) will eat seals, a common predator of pelagic fish—enabling fish populations to stay high. This kind of interaction is called a trophic cascade and is very common in marine ecosystems.

Serving as an independent oversight body, the commission has the critical task of assessing the scientific validity and effectiveness of research conducted to meet the federal mandates of the MMPA, ESA and MSA. If we as a country can’t even protect the charismatic species, I worry for all the less adorable parts of nature. So we need to draw a line in the sand. In this era of “fake news,” maintaining this entity to guard against encroachments to science-based policymaking on is more valuable than ever.

Read the full story at the Scientific American

 

California sea lion population rebounds

January 24, 2018 — California sea lions are doing just fine. Thanks for asking.

More than fine, actually.

Sea lions have fully rebounded with an estimated population of more than 250,000 in 2014, according to a recent study by scientists with the National Oceanic and Atmospheric Administration. In 1975, the population was estimated at less than 90,000.

The study reconstructed the population’s triumphs and trials over the past 40 years.

“The population has basically come into balance with its environment,” co-author Sharon Melin, a research biologist at the Alaska Fisheries Science Center, said in a statement. “The marine environment is always changing, and their population is at a point where it responds very quickly to changes in the environment.”

NOAA’s declaration that California sea lions have fully rebounded does not mean a “delisting” as it would if the sea lion was listed as threatened or endangered under the federal Endangered Species Act.

“Although there is no provision in the Marine Mammal Protection Act (which protects sea lions) to delist a species, there is a provision that allows states to ask NOAA Fisheries to take over management of species that have reached carrying capacity (in the law it is called Optimum Sustainable Population or OSP) and potentially do more to control their numbers,” wrote NOAA spokesperson Michael Milstein when announcing the report’s findings.

The goal now, Melin said, is to keep the population balanced between 183,000 and 275,000 individuals.

The rebound is a victory for the federal Marine Mammal Protection Act. But as in other instances of animal populations beating the odds — wolves, for example — it’s a success story that comes with challenges.

As the California sea lion population has grown, the animals have expanded their range, bringing them into conflict with humans and endangered fish.

Where you sit’

In Astoria, male California sea lions have taken over an entire stretch of docks at the Port of Astoria’s East Mooring Basin. Port employees have attempted numerous deterrent tactics over the years, everything from fluttering wind dancers to a fake killer whale. Nothing has really worked.

Upward of 1,000 pinnipeds were recorded in a single daily count at the mooring basin in 2015. While fewer sea lions returned this spring, plenty showed up in the fall and many have stuck around through the winter instead of leaving like they have in the past, said Janice Burk, marina manager.

The port plans to install more low railing fabricated by students from Knappa along the docks in the spring. It has proved to be the one deterrent that seems to work. Sometimes.

Read the full story from the Columbia Basin Bulletin at the Chinook Observer

 

ALASKA: Underwater camera keeps an eye on Atka mackerel

July 27, 2017 — Counting Atka mackerel became really important, according to National Marine Fisheries Service Biologist Suzanne McDermott, when Steller sea lions were declared endangered in 1997.

“We learned that Atka mackerel are their main food item,” McDermott said. “That’s when we really started looking at them in relation to Steller sea lions.”

McDermott knows the mammals face competition for their food — commercial fishermen. In 2016, Alaska fishermen caught and kept 55,000 metric tons of Atka mackerel and discarded another 532 tons as bycatch.

This summer, McDermott and her colleague David Bryan traversed the Aleutian Chain to answer a big question: are there enough fish to support both endangered Steller sea lions and commercial fishermen?

Read and listen to the full story at Alaska Public Media

More California sea lions are dying because of poisonous algae blooms

April 20, 2017 — During an average year, rescue workers at the Pacific Marine Mammal Center in Laguna Beach may encounter one pregnant sea lion suffering from domoic acid poisoning — a potentially deadly illness that occurs when the animals eat fish that have been feeding on toxic algae.

In the last two weeks however, the center has recorded 14 sea lion deaths due to domoic acid poisoning.

“Other rescue facilities are also seeing the same animals,” center spokeswoman Krysta Higuchi said. They’re “all over the place.”

In 2007, the last time the problem was this severe in Southern California, 79 sea lions died from domoic acid poisoning despite efforts by the center to rescue them, Higuchi said.

State officials have issued warnings against eating mussels, clams or whole scallops harvested recreationally in Santa Barbara County.

Read the full story at the Los Angeles Times

Tougher sea lion control law introduced in Congress

April 12, 2017 — The Endangered Salmon and Fisheries Predation Prevention Act, introduced April 8 by U.S. Reps. Jaime Herrera Beutler (R-WA) and Kurt Schrader (D-OR), aims to “clear up inefficiencies and red tape to allow more effective management of alarming predation levels by California sea lions on Columbia River spring Chinook and other species.”

If approved by Congress and the president, the legislation will authorize states and tribes to remove a limited number of predatory sea lions. It allows active management of the growing Columbia River sea lion population and removes a requirement that individual sea lions be identified as preying on salmon before they can be removed.

According to the National Marine Fisheries Service (NMFS) five-year review, sea lion management actions are needed in the Lower Columbia. The service stated, “…predation by pinnipeds [sea lions and seals] on listed stocks of Columbia River Basin salmon and steelhead, as well as eulachon, has increased at an unprecedented rate. So while there are management efforts to reduce pinniped predation in the vicinity of Bonneville Dam, this management effort is insufficient to reduce the severity of the threat, especially pinniped predation in the Columbia River estuary (river miles 1 to 145) and at Willamette Falls.”

A limited removal program has been in effect since 2011 but the NMFS review concluded that the current program doesn’t do enough to protect endangered salmon. Last year, approximately 190 sea lions killed over 9,500 adult spring Chinook within sight of Bonneville Dam. This represents a 5.8 percent loss of the 2016 spring Chinook run a quarter mile of Bonneville Dam alone. NOAA Fisheries Service also estimates that up to 45 percent of the 2014 spring Chinook run was potentially lost to sea lions in the 145 river miles between the estuary and Bonneville Dam.

Read the full story at the Chinook Observer

Mixing new technology and people power for an accurate count of endangered Steller sea lions

October 4, 2016 — Fall at the Alaska Fisheries Science Center means researchers are sifting through all the data they collected over the summer months in the field. For the Steller sea lion team that means reviewing hundreds of thousands of photos.

Every summer AFSC’s Marine Mammal Lab scientists conduct Steller sea lion surveys along the Aleutian Island chain, an area of concern for the endangered Steller sea lion. Sea lions in the central and western Aleutian Islands have continued to decline.

During the surveys, scientists take expansive photographs from the air and ground, capturing rugged coastlines filled with thousands of sea lions. They also look for permanently marked animals to learn how certain individuals are faring over the course of their lives.

Advanced technology like hexacopter drones offer easier access to hard to reach locations where Steller sea lions live. Sophisticated maps and data visualizations clearly showcase detailed information and effectively demonstrate patterns and trends, especially to the general public. All of this leads to better insights and more accurate assessments about the health of the endangered population.

Read the full story at the Alaska Fisheries Science Center