Saving Seafood

Is a Splashy Fishing Statistic Misleading?

September 10, 2018 — How much of the world’s oceans are affected by fishing? In February, a team of scientists led by David Kroodsma from the Global Fishing Watch published a paper that put the figure at 55 percent—an area four times larger than that covered by land-based agriculture. The paper was widely covered, with several outlets leading with the eye-popping stat that “half the world’s oceans [are] now fished industrially.”

Ricardo Amoroso from the University of Washington had also been trying to track global fishing activity and when he saw the headlines, he felt that the 55 percent figure was wildly off. He and his colleagues re-analyzed the data that the Global Fishing Watch had made freely available. And in their own paper, published two weeks ago, they claim that industrial fishing occurs over just 4 percent of the ocean.

How could two groups have produced such wildly different answers using the same set of data? At its core, this is a simple academic disagreement about scale. But it’s also a more subtle debate that hinges on how we think about the act of fishing, and how to measure humanity’s influence on the planet. “I think this discussion really shows how little we know about the world’s oceans and why making data publicly available is so important for stimulating research,” says Kroodsma.

As ships traverse the oceans, many of them continuously transmit their position, speed, and identity to satellites. This automatic identification system was originally developed to prevent collisions, but by training Google’s machine-learning tools on the data, the Global Fishing Watch (GFW)—an initiative led by the nonprofits Oceana and SkyTruth—can identify different kinds of fishing vessels, and work out where they’re dropping their lines and nets.

Read the full story at The Atlantic

 

Trump’s pick to head White House science office gets good reviews

August 2, 2018 — The long wait for a White House science adviser is over. President Donald Trump announced today that he intends to nominate meteorologist Kelvin Droegemeier, a university administrator and former vice-chair of the governing board of the U.S. National Science Foundation (NSF), to be director of the White House Office of Science and Technology Policy (OSTP). The OSTP director traditionally, but not always, also holds the title of the president’s science adviser.

The move caps a search process of record-setting length—nearly 560 days, double the longest time taken by any other modern president to name an OSTP director. Many in the research community had lamented the delay. But the wait may have been worth it: Droegemeier, a respected veteran of the Washington, D.C., policymaking scene, is getting positive reviews from science and university groups.

“He’s a very good pick. … He has experience speaking science to power,” says environmental policy expert John Holdren, who served as science adviser under former President Barack Obama and is now at Harvard University. “I expect he’ll be energetic in defending the R&D budget and climate change research in particular.”

Maria Zuber, a planetary geophysicist and vice president for research at the Massachusetts Institute of Technology, agrees that Droegemeier will stand up for climate science. “He always has. I see no reason why he wouldn’t now.” But she says his style is not confrontational. “He’s a good old boy. He wears cowboy boots. … He’s a personable guy.” She adds that “he’s got solid conservative credentials,” noting that his web page is emblazoned with “God Bless America!!!”

“He is an excellent choice,” says Tobin Smith, vice president for policy at the Association of American Universities in Washington, D.C. “He has a strong understanding of issues of concern to research universities.”

“Kelvin is a solid scientist, excellent with people, and with deep experience with large bureaucracies,” says Cliff Mass, an atmospheric scientist at the University of Washington in Seattle. “A moderate voice that won’t politicize the science.”

Droegemeier, who has served on the faculty of The University of Oklahoma (OU) in Norman for 33 years and been the school’s vice president for research since 2009, has long been rumored to be in the running for the OSTP job, which entails advising the president on technical issues and overseeing coordination of federal science policy. He is no stranger to Washington, D.C.; then-President George W. Bush named him to the National Science Board, which oversees NSF, in 2004, and Obama reappointed him in 2011. He served as the board’s vice-chair from 2014 to 2017.

Read the full story at Science Magazine

 

Alaska Fisherman May Have Higher Rates of Hearing Loss, New Research Shows

June 21, 2018 — Alaska salmon fishermen have a significantly higher rate of health problems than the general population, according to a new study conducted by the University of Washington School of Public Health in partnership with Alaska Sea Grant, the Sea Grant program affiliated with the University of Alaska Fairbanks published on its website. The health issues include noise-induced hearing loss, upper extremity disorders, and fatigue possibly associated with sleep apnea.

The study began in early 2015 when Torie Baker, Alaska Sea Grant marine advisory agent in Cordova, and members of Cordova District Fishermen United invited 600 salmon gillnet permit holders to answer health questions before and during the fishing season. Dr Debra Cherry, a physician and injury prevention and treatment researcher with the University of Washington Department of Epidemiology, led the effort.

The research is one of the first of its kind in the United States, according to the study’s authors. The peer-reviewed study was published April 2018 in the Journal of Agromedicine.

Evidence of noise-induced hearing loss in the study is striking. About 80% of physical exam participants had hearing loss, compared to the 15% norm for Americans. In addition to engine noise while fishing, most fishermen reported exposure to noise during off-season activities, such as snowmachining, hunting, and construction jobs.

Read the full story at The Hearing Review

Industrial Beef, Farmed Catfish Worst Foods For Environmental Impact, Study Finds

June 12, 2018 — Not all foods are created equal, especially when it comes to the environmental impact of meat production. Industrial beef and farmed catfish take the biggest toll on the environment, while small fish caught in the wild and farmed shellfish and mollusks cause the least damage, a study had found.

Researchers used the standard of producing 40 grams of protein — the daily recommended protein serving — as the base for looking at four different metrics of how various types of production of different foods impact the environment. The four metrics were the amount of energy used, emissions of greenhouse gases, the potential for contribution of excessive chemicals — in the form of nutrients, such as fertilizers — to the environment, and the potential to contribute to acid rain by emitting specific substances.

They looked at all stages of the food products’ lives, called “cradle-to-grace” analysis. There are about 300 different assessments for such analyses when it comes to animal food production, and the study’s authors selected 148 of those, choosing ones that were comprehensive and not too specialized.

Livestock farming at the industrial scale had the worst impact in the acid rain category, due to the emission of methane from manure. It also scored poorly when it comes to excessive nutrients being released into the environment. Industrial beef production, as well as aquaculture catfish, produce about 20 times more greenhouse gases than producing chicken, or salmon and mollusks that have been farmed. Seafood aquaculture, including catfish, tilapia and shrimp, used the most energy, even more than livestock production.

On the other hand, producing mollusks like oysters, mussels and scallops in aquaculture absorbs excess nutrients that would otherwise harm the ecosystem. It also emits fewer greenhouse gases. Catching fish in the wild requires no fertilizers of any sort, and the biggest environmental factor there is the fuel used by the fishing boats. The exact amount of fuel consumed varies greatly, depending on the type of fishing method used.

Read the full story at the International Business Times

Choice matters: The environmental costs of producing meat, seafood

June 11, 2018 — Which food type is more environmentally costly to produce—livestock, farmed seafood, or wild-caught fish?

The answer is, it depends. But in general, industrial beef production and farmed catfish are the most taxing on the environment, while small, wild-caught fish and farmed mollusks like oysters, mussels and scallops have the lowest environmental impact, according to a new analysis.

The study will appear online June 11 in the journal Frontiers in Ecology and the Environment, and its authors believe it is the most comprehensive look at the environmental impacts of different types of animal protein production.

“From the consumer’s standpoint, choice matters,” said lead author Ray Hilborn, a University of Washington professor in the School of Aquatic and Fishery Sciences. “If you’re an environmentalist, what you eat makes a difference. We found there are obvious good choices, and really obvious bad choices.”

The study is based on nearly a decade of analysis, in which the co-authors reviewed hundreds of published life-cycle assessments for various types of animal protein production. Also called a “cradle-to-grave” analysis, these assessments look at environmental impacts associated with all stages of a product’s life.

Of the more than 300 such assessments that exist for animal production, the authors selected 148 that were comprehensive and not considered too “boutique,” or specialized, to inform their new study.

As decisions are made about how food production expands through agricultural policies, trade agreements and environmental regulations, the authors note a “pressing need” for systematic comparisons of environmental costs across animal food types.

“I think this is one of the most important things I’ve ever done,” Hilborn said. “Policymakers need to be able to say, ‘There are certain food production types we need to encourage, and others we should discourage.'”

Broadly, the study uses four metrics as a way to compare environmental impacts across the many different types of animal food production, including farm-raised seafood (called aquaculture), livestock farming and seafood caught in the wild. The four measures are: energy use, emissions, potential to contribute excess nutrients—such as fertilizer—to the environment, and the potential to emit substances that contribute to acid rain.

The researchers compared environmental impacts across food types by using a standard amount of 40 grams of protein—roughly the size of an average hamburger patty, and the daily recommended protein serving. For example, they calculated how much greenhouse gas was produced per 40 grams of protein across all food types, where data were available.

Read the full story at PHYS.org

New study reveals cost of 2017 salmon fisheries closure

May 7, 2018 — The following was released by NOAA Fisheries:

Last year’s closure of the commercial ocean salmon troll fishery off the West Coast is estimated to have cost $5.8 million to $8.9 million in lost income for fishermen, with the loss of 200 to 330 jobs, according to a new model that determines the cost of fisheries closures based on the choices fishermen make.

Scientists hope the model, described for the first time this week in Marine Policy, will help policy makers anticipate the economic toll of fisheries closures. Such foresight may be especially useful as conditions in the California Current off the West Coast grow increasingly variable, leading to more potential closures, said lead author Kate Richerson, a marine ecologist with NOAA Fisheries’ Northwest Fisheries Science Center and the University of Washington.

“We’re probably only going to see more of these closures in the future,” she said, “so being able to predict their effects and fallout for coastal communities puts us ahead of the curve in terms of considering those impacts in planning and management decisions.”

The new model estimates the future losses associated with fisheries closures based on the way fishermen reacted to previous closures. It anticipates, for instance, that many fishermen will simply quit fishing rather than shift their efforts to another fishery instead. In this way, the model accounts for the difficulty fishermen face in entering other fisheries with limited permits, Richerson said.

The research is the first attempt to predict the effect of fisheries closures before they happen, said Dan Holland, an economist at the Northwest Fisheries Science Center and coauthor of the study. The model, developed prior to the 2017 closure, also can help identify the most affected communities.

For example, Coos Bay and Brookings, Oregon, and Eureka, California, were among the hardest hit by the 2017 salmon closures because they are geographically located in the center of the closure that stretched from Northern California to Oregon. The closure led to the estimated loss of about 50 percent of fisheries-related employment in Coos Bay and about 35 percent declines in fishing-related income and sales. Predicted percentage declines in overall fishing-related income are lower than declines in salmon income, since many fishermen were predicted to continue to participate in other fisheries.

The study estimated that the closure led to a loss of $12.8 million to $19.6 million in sales. Richerson noted that the model estimates only the economic consequences of the closure to the commercial ocean salmon fishery and does not include the toll on recreational fisheries or in-river fisheries, which would make the total losses even higher.

The closure recommended by the Pacific Fishery Management Council and adopted by NOAA Fisheries was designed to protect low returns of salmon to the Klamath River in Northern California.

Learn more about NOAA Fisheries’ Northwest Fisheries Science Center here.

 

New model looks to predict economic impacts of fishing closures

April 12, 2018 — Getting ahead of the economic impacts that tend to accompany fisheries’ closures is the basis of a new predictive model put together by a team of scientists from NOAA’s Northwest Fisheries Science Center (NFSC) and the University of Washington.

When fisheries shut down, entire communities suffer, the scientific team recognized, and oftentimes, funds doled out to help fishermen weathering rough patches arrive months after they are needed. The new predictive model, which was published recently in the journal Marine Policy, is designed to help mitigate some of this damage, explained Kate Richerson, a marine ecologist at NFSC and the University of Washington, and the lead author of the model.

To develop their predictive standard, Richerson and her team focused on the 2017 closure of the U.S. West Coast’s salmon troll fishery, collating fish ticket data as a starting point.

“We looked at a pretty broad cohort of vessels and found that some of these vessels are almost entirely dependent on salmon, while others are almost entirely dependent on other fisheries,” Richerson said. “Then we looked at their predicted behavior and revenue under the conditions of a closure and under the conditions of an average year. And we used that in combination with this economic input-output model, which links fishing revenue to jobs and sales, to make a sort of back-of-the-envelope prediction of what the impacts of the 2017 closure might have been.”

They estimated the closure, leveled to protect struggling Chinook runs on the Klamath River, would cost trollers anywhere from USD 5.8 million (EUR 4.6 million) to USD 8.9 million (EUR 7.2 million), along with 200 to 330 jobs and USD 12.8 million (EUR 10.3 million) to USD 19.6 million (EUR 15.8 million) in sales. The numbers were confined to trollers, and would have likely been far higher with the inclusion of other fisheries, such as gillnetting and recreational fishing.

Read the full story at Seafood Source

 

This Is Why You Don’t See People-Size Salmon Anymore

March 13, 2018 — While the orcas of Puget Sound are sliding toward extinction, orcas farther north have been expanding their numbers. Their burgeoning hunger for big fish may be causing the killer whales’ main prey, Chinook salmon, to shrink up and down the West Coast.

Chinook salmon are also known as kings: the biggest of all salmon. They used to grow so enormous that it’s hard to believe the old photos now. Fishermen stand next to Chinooks almost as tall as they are, sometimes weighing 100 pounds or more.

“This has been a season of unusually large fish, and many weighing from 60 to 70 pounds have been taken,” The Oregonian reported in 1895.

Now, more than a century later, “it’s not impossible that we see individuals of that size today, but it’s much, much rarer,” University of Washington research scientist Jan Ohlberger says.

Ohlberger has been tracking the downsizing of salmon in recent decades, but salmon have been shrinking in numbers and in size for a long time. A century’s worth of dam-building, overfishing, habitat loss and replacement by hatchery fish cut the size of the average Chinook in half, studies in the 1980s and 1990s found.

Dam-building and fishing have tailed off, but Chinooks have been shrinking even faster in the past 15 years, according to a new paper by Ohlberger and colleagues in the journal Fish and Fisheries. Older and bigger fish are mostly gone.

Read the full story at KUOW

 

Ray Hilborn: New study provides no new information on global fishing footprint

March 7, 2018 — University of Washington fisheries researcher Ray Hilborn said that a new study using satellite data from industrial fishing vessels to map global fishing effort fails to provide any new insight, despite media reports indicating otherwise.

The study, published in Science in February, used messages transmitted between 2012 and 2016 from the automatic identification systems (AIS) of more than 70,000 industrial fishing vessels to create a global footprint, concluding that “industrial fishing occurs in over 55 percent of ocean area,” according to the abstract.

But Hilborn said the vessels monitored for the study were in large part tuna boats over 100 feet, which have been monitored for decades.

“Most of the footprint data they have is from high-seas tuna fishing, because that’s really the only thing that goes on on the high seas. Maps of the tuna long-lining and seining distribution have been distributed as part of the standard operating procedure by the tuna RFMOs [regional fisheries management organizations] for decades. I remember looking at them 30 or 40 years ago. There’s nothing new about this – that tuna fishing goes on across much of tropical oceans and some of the temperate oceans,” Hilborn told SeafoodSource.

Not only is this not new information, Hilborn said, but it does little to measure the impact of trawling on certain ecosystems, which Hilborn said can be much more severe than high-seas fishing.

“A place that has had one long-line for albacore or big-eye tuna in five years is obviously not very heavily fished, he said. “But if you go to Southeast Asia, we can calculate how often the average piece of bottom is trawled a year. In the U.S., depending on where, it’s about once every three years. In Southeast Asia or India, they are trawled 10 to 20 times a year. That means the impact of fishing there is probably 1,000 times higher than it is on the high seas where someone once visited with a long-line boat.”

Furthermore, the trawling data provided in the new study, Hilborn said, overestimates the proportion of the sea-bed that is affected by 10 times. Hilborn and his team have just completed a five-year study that attempts to provide a finer-grained look at the impact of trawling by aggregating data from vessel-monitoring systems, logbooks, and on-board observations.

Read the full story at Seafood Source

 

No more ‘Kings of the Columbia’: Chinook salmon much smaller, younger these days, study finds

March 1, 2018 — They used to tip the scales at 80 pounds: June Hogs they were called. The kings of the Columbia River.

But the big chinook that used to lumber up and down the Columbia and cruise the northeastern Pacific from California to western Alaska have dwindled away over the past 40 years, researchers have learned.

Published in the journal Fish and Fisheries, researchers have documented a trend in decreasing body size in chinook over the past 40 years. The trend was remarkably widespread, affecting both wild and hatchery fish in the northern Pacific from California to western Alaska.

“It is a quite grand phenomenon, not just observations here and there, it is the signature we see along the coast,” said Jan Ohlberger of the University of Washington’s School of Aquatic and Fishery Sciences, lead author on the paper.

Chinook are the biggest and most prized species of salmon in North America — and the most sought-after, whether by killer whales, eagles or bears. And certainly by every fisherman, whether commercial, recreational or ceremonial.

But big isn’t what it used to be.

Both wild and hatchery chinook are smaller and younger today, researchers have found, examining 85 chinook populations along the West Coast of North America.

The big chinook that stay out in the ocean four and five years before returning home to spawn have decreased both in numbers and in size — as much as 10 percent in length, and substantially more in weight.

Read the full story at the Seattle Times