Saving Seafood

New Study Finds Some Fisheries Management Is Actually Working

January 30, 2020 — Understanding how many fish are in the sea is crucial to creating effective policy and management strategies. One study out of the University of Washington in Seattle took a close look at how fishing pressures and stock abundance are correlated. How will management initiatives in countries with high fishing pressure affect the number of fish that are available to catch? Ray Hilborn and 23 contributing authors on the paper took a data-driven approach to this question with optimistic results that they hope will convince policymakers and the public that fish stocks are actually on the rise.

Hilborn has been labeled an “overfishing denier” for his divisive views on the status of overfishing and his pushback against marine protected areas (MPAs), but Hilborn argues that closing areas to fishing is not necessarily the answer; “fisheries are not well managed in many parts of the world (the ones primarily where we did not have data for our paper)…our paper shows that fisheries management does work when implemented”. The researchers assessed fish catch data from six continents (which comprised about 50% of total global catch) up until the year 2016 and found that where fish stocks were being managed properly, increased number of fish was the result. “Our hope for the use of the results is that the thousands of scientists, managers and technicians that have helped stop overfishing will be recognized for their contribution”, Hilborn says.

Fish stock assessments use data gathered from a number of sources including fisheries landings (the fish that are caught by fishers and reported), biological studies and scientific surveys. While there are uncertainties in the data due to environmental, financial and technological limitations, stock assessments provide the backbone of fisheries management and drive regulatory decisions.

Read the full story at Forbes

Fish populations around the world are improving

January 16, 2020 — The following was released by Sustainable Fisheries UW:

Let’s enjoy some unequivocal, inarguable good news: a paper published today in PNAS, Hilborn et al. 2020, shows that on average, scientifically-assessed fish populations around the world are healthy or improving. And, for fish populations that are not doing well, there is a clear roadmap to sustainability. With Australia on fire and scares of World War III, the start of 2020 and the new decade has been awful; hopefully Hilborn et al. 2020 can kickstart a decade of ocean optimism.

Hilborn et al. 2020 counters the perception that fish populations around the world are declining and the only solution is closing vast swaths of ocean to fishing. Instead, Hilborn et al. 2020 argues that increasing scientific, management, and enforcement capacity will lead to more abundant and sustainable oceans. The major takeaway of the paper is that fishery management works—when fisheries are managed, they are sustained. The key is following the science-to-management blueprint. Scientific data collection and fishery assessment comes first, then fishing regulation and enforcement of fishing policies. With the blueprint in place, most fisheries around the world are sustainable or improving.

The paper uses updates to the RAM Legacy Stock Assessment Database, a decades-long project to assemble data on fish populations that are scientifically assessed. As of 2019, the database contains data on 882 marine fish populations, representing about half of reported wild-caught seafood. In 2009, the database contained data on only 166, representing a much smaller proportion of global seafood. Researchers have spent the last 10 years adding to the database, and with today’s publication, update the global status of fish stocks. They found that, on average, fish populations are above target levels. Not every stock is doing well, but on average, things are much better than they were 2 decades ago. How nice: an environmental story where things are better now than they were in the past!

The paper describes the global status of fish stocks, but it also tells the story of fishery sustainability from the past 50 years.

Read the full story at Sustainable Fisheries UW

Fish stock abundance increases when intensely managed, study shows

January 16, 2020 — Studies on global fisheries rarely make national news, but University of Washington professor of Fisheries and Aquatic Sciences Ray Hilborn says that the public perception of fisheries is still recovering from one eye-catching study in 2006.

“A paper come out that said if current trends continue, all fish stocks will be collapsed by 2048, and that got front page New York Times, front page Washington Post, and it was totally wrong,” Hilborn said. “It was so contrary to my experience and lots of people, you can imagine almost everyone working on fisheries in Alaska. Ultimately I got together with the first author of the paper and we figured we could actually try to understand why we had such different perspectives.”

The result of the collaboration was a paper published in 2009 which showed that on average, stock abundance appeared to be stable.

“What they had assumed is that if that catch goes down, the catch is declining, and that simply wasn’t true. Most of the stocks they called collapsed, the catch had declined for other reason. Many times regulation, some times international 200 mile zones,” Hilborn said.

Hilborn worked to build a data set on the abundance of fish stocks, rather than just the reported catch.

More than a decade later, Hilborn’s research shows how intensely managing fisheries has resulted in increased abundance of fish stocks.

Read the full story at KTUU

Fish populations are thriving in areas with intense management, global study finds

January 14, 2020 — A new study has shown that fishery management, when done well, works, and is the solution for keeping fisheries sustainable.

By looking at data from about 30 countries around the world, a group of researchers have concluded that intense fisheries management has led to healthy or improving fish populations, while a dearth of management has led to overfishing. The researchers published their results in a study in the Proceedings of the National Academy of Sciences on 13 January.

Read the full story at Seafood Source

New paper showing fish stocks increasing where managed

January 14, 2020 — Nearly half of the fish caught worldwide are from stocks that are scientifically monitored and, on average, are increasing in abundance. Effective management appears to be the main reason these stocks are at sustainable levels or successfully rebuilding.

That is the main finding of an international project led by the University of Washington to compile and analyze data from fisheries around the world. The results were published Jan. 13 in the Proceedings of the National Academy of Sciences.

“There is a narrative that fish stocks are declining around the world, that fisheries management is failing and we need new solutions — and it’s totally wrong,” said lead author Ray Hilborn, a professor in the UW School of Aquatic and Fishery Sciences. “Fish stocks are not all declining around the world. They are increasing in many places, and we already know how to solve problems through effective fisheries management.”

The project builds on a decade-long international collaboration to assemble estimates of the status of fish stocks — or distinct populations of fish — around the world. This information helps scientists and managers know where overfishing is occurring, or where some areas could support even more fishing. Now the team’s database includes information on nearly half of the world’s fish catch, up from about 20% represented in the last compilation in 2009.

“The key is, we want to know how well we are doing, where we need to improve, and what the problems are,” Hilborn said. “Given that most countries are trying to provide long-term sustainable yield of their fisheries, we want to know where we are overfishing, and where there is potential for more yield in places we’re not fully exploiting.”

Over the past decade, the research team built a network of collaborators in countries and regions throughout the world, inputting their data on valuable fish populations in places such as the Mediterranean, Peru, Chile, Russia, Japan and northwest Africa. Now about 880 fish stocks are included in the database, giving a much more comprehensive picture worldwide of the health and status of fish populations.

Still, most of the fish stocks in South Asia and Southeast Asia do not have scientific estimates of health and status available. Fisheries in India, Indonesia and China alone represent 30% to 40% of the world’s fish catch that is essentially unassessed.

“There are still big gaps in the data and these gaps are more difficult to fill,” said co-author Ana Parma, a principal scientist at Argentina’s National Scientific and Technical Research Council and a member of The Nature Conservancy global board. “This is because the available information on smaller fisheries is more scattered, has not been standardized and is harder to collate, or because fisheries in many regions are not regularly monitored.”

The researchers paired information about fish stocks with recently published data on fisheries management activities in about 30 countries. This analysis found that more intense management led to healthy or improving fish stocks, while little to no management led to overfishing and poor stock status.

These results show that fisheries management works when applied, and the solution for sustaining fisheries around the world is implementing effective fisheries management, the authors explained.

“With the data we were able to assemble, we could test whether fisheries management allows stocks to recover. We found that, emphatically, the answer is yes,” said co-author Christopher Costello, a professor of environmental and resource economics at University of California, Santa Barbara, and a board member with Environmental Defense Fund. “This really gives credibility to the fishery managers and governments around the world that are willing to take strong actions.”

Fisheries management should be tailored to fit the characteristics of the different fisheries and the needs of specific countries and regions for it to be successful. Approaches that have been effective in many large-scale industrial fisheries in developed countries cannot be expected to work for small-scale fisheries, especially in regions with limited economic and technical resources and weak governance systems, Parma said.

The main goal should be to reduce the total fishing pressure when it is too high, and find ways to incentivize fishing fleets to value healthy fish stocks.

“There isn’t really a one-size-fits-all management approach,” Costello said. “We need to design the way we manage fisheries so that fishermen around the world have a long-term stake in the health of the ocean.”

Other co-authors are from University of Victoria, University of Cape Town, National Institute of Fisheries Research (Morocco), Rutgers University, Seikai National Fisheries Research Institute Japan, CSIRO Oceans and Atmosphere, Fisheries New Zealand, Wildlife Conservation Society, Marine and Freshwater Research Center (Argentina), European Commission, Galway-Mayo Institute of Technology, Center for the Study of Marine Systems, Sustainable Fisheries Partnership, The Nature Conservancy, and the Food and Agriculture Organization of the United Nations.

Hilborn and collaborators recently presented this work at the Food and Agriculture Organization of the United Nations’ International Symposium on Fisheries Sustainability in Rome.

The research was funded by the National Center for Ecological Analysis and Synthesis Science for Nature and People Partnership. Individual authors received funding from The Nature Conservancy, The Wildlife Conservation Society, the Walton Family Foundation, Environmental Defense Fund, the Richard C. and Lois M. Worthington Endowed Professorship in Fisheries Management and donations from 12 fishing companies.

Read the full paper here

Chinook salmon are getting smaller, and researchers say killer whales may be to blame

December 31, 2019 — Chinook salmon, also known as king salmon, are getting smaller, and a team of scientists at the University of Washington think they know why. A new study says killer whales might be behind Chinook’s declining size.

Chinook salmon are an important part of life in Southeast Alaska. Part of the prized fish’s value is its size. Chinook are the largest Pacific salmon.

But in the last two years, returns have been low. Ketchikan, Wrangell and Petersburg all saw their king salmon derbies cancelled in 2018 and 2019. And forecasts for 2020 don’t look much better.

But it’s not just their numbers that are declining.

University of Washington researcher Jan Ohlberger published a paper last year that shows Chinook are getting smaller, too. Up to 10 percent smaller.

That discovery intrigued the researcher.

“The question is, what is the cause of that?” said Ohlberger in a recent phone interview.

A causal claim is difficult to make. Correlation, of course, doesn’t always imply causation.

Read the full story at Alaska Public Media

ALASKA: At Pacific Marine Expo, Pebble worries dominate discussion

December 5, 2019 — Over 500 vendors exhibited at the 2019 Pacific Marine Expo in Seattle in late November. For commercial fishermen, processors and small businesses, it’s the place to be.

The expo was winding down on Saturday morning. But Naknek fisherman Reba Temple was causing a stir with her unusual get-up, made of the mesh netting that salmon tenders use to collect a catch.

“It’s made out of scraps of brailer material. So there’s grommets and mesh brailer material and black straps, and it’s a ballgown,” she said.

Temple said the expo is a great place to catch up with the people and the products in the industry.

“Everyone’s here, you can talk to your processors, you can talk to your friends, see hydraulic pumps cut open so you actually know how they work,” she said.

Stickers and signs saying NO PEBBLE MINE adorned booths, as they have for the past decade. The mine would tap large copper and gold deposits near the headwaters of two major river systems in Bristol Bay. And as the Trump administration breathes new life into the project, many people here are worried.

“Nothing in the world has zero risk — especially when you have a mine of this size with the existing data that show very definitively that there will be impacts,” said Daniel Schindler, director of the University of Washington’s Alaska Salmon Program.

Read the full story at Alaska Public Media

Humpback whale population on the rise after near miss with extinction

October 22, 2019 — Intense pressure from the whaling industry in the 20th century saw the western South Atlantic population of humpbacks diminish to only 450 whales. It is estimated that 25,000 whales were caught over approximately 12 years in the early 1900s.

Protections were put in place in the 1960s as scientists noticed worldwide that populations were declining. In the mid-1980s, the International Whaling Commission issued a moratorium on all commercial whaling, offering further safeguards for the struggling population.

A new study co-authored by Grant Adams, John Best and André Punt from the University of Washington’s School of Aquatic and Fishery Sciences shows the western South Atlantic humpback (Megaptera novaeangliae) population has grown to 25,000. Researchers believe this new estimate is now close to pre-whaling numbers.

The findings were published Oct. 16 in the journal Royal Society Open Science.

Read the full story at Science Daily

Will cutting salmon out of our diets save the Puget Sound orcas?

August 29, 2019 — Salmon is a popular food in the Pacific Northwest for humans and orcas alike. But, the Southern Resident Orcas are struggling with their sole food source, Chinook Salmon, getting smaller and smaller.

With that in mind, is it still a good idea for us to consume fish? Will cutting salmon out of our diets help our orca population rebound?

Ray Hilborn is a professor at the University of Washington’s University of School of Aquatic and Fishery Sciences. His research focuses on ways to best manage fisheries to provide sustainable benefits to human society.

“In general, fisheries have quite a bit lower environmental impact than livestock, and even with respect to crops, many fisheries look very good compared to crops,” said Hilborn.

Read the full story at K5 News

WASHINGTON: Salmon merging onto new ‘highway’ in Seattle, complete with rest stops and restaurants

June 4, 2019 — Next time you’re visiting Seattle’s downtown waterfront and gazing out across Elliott Bay toward the majestic Olympic Mountains, look down. You might see a shoal of silvery baby salmon, each about 3 inches long.

You might also see a snorkeler counting fish, because University of Washington researchers are studying habitat improvements built along the city’s $410 million new seawall, which stretches 3,100 feet between the Seattle Aquarium and the Colman Dock ferry terminal.

Their observations are preliminary — yet promising. Since the wall was completed in 2017, the School of Aquatic and Fishery Sciences researchers have repeatedly witnessed juvenile salmon swimming under the wooden piers that extend out over the waterfront, where they almost never ventured before.

During the wall’s construction, workers added shelves and grooves meant to help algae grow and critters like mussels take hold. They laid rock beds below the wall because young salmon prefer to forage and hide in shallow-water nooks. They even installed translucent glass panes in a cantilevered sidewalk between the wall and the piers to allow light through, down to the water.

Juvenile salmon prefer swimming and eating in sunlight, and the improvements are meant to act like a migratory highway, complete with rest stations and restaurants. Taken together, they represent what might be the most sweeping seawall habitat-restoration project anywhere.

Read the full story at The Seattle Times