Saving Seafood

JOHN SACKTON: Media’s Rampant ‘Fisheries Are Going Extinct’ Claim Finally has Serious Rebuttal from Scientists

SEAFOODNEWS.COM [The Editor’s View] by John Sackton — Nov 3, 2015 — The following headline came across our newsfeed this morning “Some South China Sea fish ‘close to extinction'”, courtesy of Agence France Presse.

The report was based on a quote from Rashid Sumaila, director of the Fisheries Economics Research Unit of the University of British Columbia.

“The South China Sea is… under threat from various sources. We need to do something,” said Sumaila.

“The most scary thing is the level of decline we have seen over the years. Some species (are facing) technically extinction or depletion,” Sumaila, who headed the study, told a press conference in Hong Kong. 

Having not seen the paper, it is not possible to evaluate his statements. But they are readily taken up because they feed into a media narrative that has proved very hard to change: fisheries around the world are dying because of human greed and overfishing.  This narrative has been central to NGO campaigns focused on fisheries. 

For many years, there was no organized response, and especially no way for journalists to get accurate scientific information. If they were fed a quote, such as “90% of the worlds stocks were unsustainably harvested” as appeared in Newsweek this summer, or that fish is ‘aquatic bushmeat’ comparable to eating monkeys and rhinoceros, as was said by Sylvia Earle, they have no way to evaluate its truthfulness. No wonder that seafood seems so controversial.

A group of scientists has come together through Ray Hilborn and his colleagues at the University of Washington, that is finally providing real-time commentary and rebuttal – i.e. pointing out the basic science – which in many cases does not support these media stories. 

Our companion story today by Peggy Parker has more detail on Hilborn’s rebuttal to Newsweek, where he said one article ‘may set a record for factual errors’.

The idea is not to simply point out poor science and unsupported conclusions, but to encourage media to use their website cfooduw.org, as a resource whenever they see a scientific claim about fisheries.

For example, just in the past few days, scientists from around the world have posted comments on a range of global topics.

Hilborn pointed out, and the Newsweek editors accepted, a correction that not 90%, but 28.8% of fish stocks were estimated as overfished. Would they have run the story if they had not been pitched intitally that 90% of fish stocks have collapsed?

Steve Cadrin of the University of Massachusetts comments on recent articles about cod in both New England and Newfoundland.  He says “The lesson from both of these papers is that rebuilding the stocks to historical levels depends both on fisheries management … and on the return of favorable environmental conditions.” 

“Stock assessment models are simplifications of a much more complex reality. Stock assessments typically assume that components of productivity (survival from natural mortality, reproductive rates, growth) are relatively constant. These assumptions may be reasonable for relatively stable ecosystems. However, considering the extreme climate change experienced in the Gulf of Maine, such assumptions need to be re-considered.  Alternative approaches to science and management are needed to help preserve the fishing communities that rely on Gulf of Maine cod.” 

Two tuna scientists collaborate on a story in response to the charge by Greenpeace that John West is breaking its sustainable tuna pledge by buying fish caught with FADs.

FADs are a type of fishing gear (radio monitored fish aggregating devices) that have become very widely used for pelagic tuna. The two scientists, Laurent Dagorn and Gala Moreno, point out in a comment and a recent paper the important issues with FADs are 1) quantifying, with scientific data, how big that impact actually is, 2) determining if the impact is acceptable for the amount and diversity of fish caught, 3) comparing it with the impact of other fishing gears, and 4) implementing measures to reduce an impact if it is too high for the ecosystem, taking into account all fishing impacts. 

This provides a real road map for a discussion of FADs and how they should or should not be used, in contrast to the campaign claims that they are simply destructive types of fishing gear.  Dagorn and Moreno point out that all food production (including organic farming) involves making choices about modifying ecosystems, and tuna fishing should not be considered in isolation, but in how it meets the goal of providing food for global populations.

Aggregating and making this kind of fisheries science easily accessible is one of the most concrete actions that has been taken in years to counteract the misinformation that so many of us in the industry experience every day. 

It is an effort that deserves wholehearted support, including publicizing the resource to local writers and editors. Please visit their website at cfooduw.org.

This opinion piece originally appeared on SeafoodNews.com, a subscription site. It has been reprinted with permission.

Global Fisheries Scientists Join new CFOOD Initiative

SEATTLE — September 28, 2015 — The following was released by the Collaborative for Food from Our Oceans Data (CFOOD):

International experts in fisheries management have come together as part of a new initiative, called CFOOD (Collaborative for Food from Our Oceans Data.) The coalition will gather data from around the world and maintain fisheries databases while ensuring seafood sustainability discussions in the media reflect ground-truth science.

The CFOOD project, headquartered at the University of Washington’s School of Aquatic and Fishery Sciences (SAFS), is made up of a network of scientists whose mission stemmed from a frustration with erroneous and agenda-driven stories about fisheries sustainability in the media. The CFOOD project will maintain a website and social media channels that provide a forum for immediate feedback on new seafood sustainability reports and studies.

“The CFOOD website allows us to offer independent scientific commentary to debunk false claims, support responsible science, or introduce new issues based on recent research,” said Dr. Ray Hilborn, Professor at University of Washington’s SAFS and founder of the CFOOD initiative.

“The ocean is a remarkably abundant source of healthy protein,” said Hilborn. “And while sustainability challenges exist, particularly in areas lacking sufficient fishery management infrastructure, many fisheries around the world are well-managed and sustainable. The message doesn’t always seem to resonate with consumers because of misinformation they continue to hear in the media.”

By reviewing and providing scientific analysis on relevant studies, papers, and media reports the CFOOD network hopes to use science to set the record straight for consumers, so they can have confidence the seafood they purchase is harvested in an environmentally responsible fashion.

Other scientists on the editorial board for CFOOD include Robert Arlinghaus, Leibniz-Institute of Freshwater Ecology and Inland Fisheries and Humboldt at Universität zu Berlin; Kevern Cochrane, FAO Retired, Cape Town, South Africa; Stephen Hall, World Fish Center, Penang, Malaysia; Olaf Jensen, Rutgers University; Michel Kaiser, Bangor University, UK; Ana Parma, CONICET Puerto Madryn, Argentina; Tony Smith, Hobart, Australia; Nobuyuki Yagi, Tokyo University.

“Exaggerated claims of impending ecological disaster might grab attention, but they risk distorting effort and resources away from more critical issues.  I hope this initiative will help provide the balance we need,” said Dr. Stephen Hall, Director General, World Fish Center, based in Malaysia.

Website: http://cfooduw.org/

Twitter: https://twitter.com/cfoodUW

Facebook: https://www.facebook.com/cfooduw?fref=ts

 

D.B. PLESCHNER: Recent Fishery Study Debunked by 1,400 Years of Data

September 2, 2015 — The following op-ed by D.B. Pleschner was submitted to Saving Seafood:

In an article in International Business Times (August 5, 2015), Aditya Tejas quoted researcher Malin Pinsky in his recently published paper that claims smaller, faster-growing fish like sardines and anchovies are more vulnerable to population collapses than larger fish.

“Climate variations or natural boom-and-bust cycles contribute to population fluctuation in small fast-growing fish,” Pinsky said, “but when they are not overfished, our data showed that their populations didn’t have any more tendency to collapse than other fish.” He called these findings counterintuitive because the opposite dynamic holds true on land: “Mice thrive while lions, tigers and elephants are endangered,” he said.

While it’s common these days to blame the ocean’s woes on overfishing, the truth is Pinsky’s conclusions don’t paint a complete picture. Fortunately, we do have an accurate picture and it’s definitely better than the proverbial thousand words.

The picture is a graph (adapted from Baumgartner et al in CalCOFI Reports 1992, attached) that shows sardine booms and busts for the past 1,400 years. The data were extracted from an anaerobic trench in the Santa Barbara Channel which correlated sardine and anchovy recoveries and collapses with oceanic cycles.

It’s important to note that most of sardine collapses in this timeframe occurred when there was virtually no commercial fishing. The best science now attributes great fluctuations and collapses experienced by sardines to be part of a natural cycle.

“Pinsky has never been a terrestrial biologist or naturalist or he would have known that small rodents have boom and bust cycles brought about by combinations of environmental conditions and the mice’s early maturity and high fecundity rates,” says Dr. Richard Parrish, an expert in population dynamics now retired from the National Marine Fisheries Service, .

“All fish stocks show boom and bust cycles in recruitment unrelated to fishing,” says Dr. Ray Hilborn, internationally respected fisheries scientist from the University of Washington. “Sardines in particular have been shown to have very great fluctuations and collapses long before commercial fishing. Fast growing, short-lived species will be much more likely to decline to a level called “collapse” when recruitment fluctuates because they are short lived — longer lived species won’t decline as much.”

As a further poke in the eye to the truth, Pinsky cites sardines off the coast of Southern California as a species that has seen fluctuations for thousands of years, but “not at the levels that they’ve experienced in recent decades due to overfishing.”

Again, this simply is not true.

Since the fishery reopened in 1987, Pacific sardines have been perhaps the best-managed fishery in the world – the poster fish for effective ecosystem-based management. The current harvest control rule, updated to be even more precautionary in 2014, sets a strict harvest guideline that considers ocean conditions and automatically reduces the catch limit as the biomass declines.

If the temperature is cold – which scientists believe hampers sardine recruitment – the harvest is reduced. And if the population size declines, both the harvest rate and the allowable catch will automatically decrease, and directed fishing will be stopped entirely when biomass declines below 150,000 mt.

In fact, the current sardine harvest rule is actually more precautionary than the original rule it replaced. It does this by producing an average long-term population size at 75 percent of the unfished size, leaving even more fish in the water, vs. 67 percent in the original rule. The original harvest rule reduced the minimum harvest rate to 5 percent during cold periods. The present has a minimum rate of 0 percent during cold periods.

Compare this to the 1940s and ’50s when the fishery harvest averaged 43 percent or more of the standing sardine stock with little regulatory oversight and no limit on the annual catch. This, coupled with unfavorable ocean conditions, culminated in the historic sardine fishery collapse that devastated Monterey’s Cannery Row.

But that was nearly 70 years ago, not “recent decades.” Our current fishery harvest is less than a quarter of the rate observed during that historical sardine collapse.

As a scientist, Pinsky should be aware of the complex, proactive management efforts that have been in place for decades to prevent overfishing in California and the west coast. He should also be aware of the data from Baumgartner that contradicts his faulty conclusions.

D.B. Pleschner is executive director of the California Wetfish Producers Association, a nonprofit dedicated to research and to promote sustainable Wetfish resources.