D.B. Pleschner: Oceana claims controversy but knowledgeable; scientists disagree

D.B. Pleschner

The anti-fishing group Oceana is up to mischief again.

Members claim that when the Pacific Fishery Management Council voted last week to allow sardine fishing to continue in 2013, based on recommendations of their Scientific and Statistical Committee — a group of knowledgeable scientists who review all council actions to achieve best available science — a debate erupted (spurred largely by Oceana) about whether the sardine resource is in a state of collapse similar to what happened in the 1940s “Cannery Row” era.

But as usual, Oceana is attempting to obfuscate the truth to achieve its agenda of shutting down fishing.

The fact is there was no controversy among expert fisheries biologists over the setting of the 2013 sardine harvest limit, and the resource is not about to collapse. The controversy stemmed from the problem that the acoustic survey, one of three indices used to measure sardine abundance, estimated only 13,000 metric tons in the Pacific Northwest, during the same period the fishery was catching 50,000 metric tons, in the same general area and an aerial survey estimated 900,000 metric tons.

Because this was an “update” year, neither scientists nor the council had leeway to change the stock assessment, even though it likely underestimated the sardine population. In fact, scientists from around the globe have acknowledged that the West Coast sardine fishery is among the best managed in the world.

That’s because the management of Pacific sardines is very precautionary. We have a risk-averse formula in place that ensures when population numbers go down, the harvest also goes down. Conversely, when more sardines are available, more harvest is allowed.

For example, all the indices used to measure abundance — acoustics, daily egg production and an aerial survey conducted in the Pacific Northwest — ticked upward (or were stable) last year, which led to a higher harvest guideline in 2012.

In 2011, our sardine fisheries harvested only 5.11 percent of a very conservative stock estimate, leaving nearly 95 percent of the species for predators and ecosystem needs.

Does that sound like overfishing to you?

Apparently Oceana doesn’t understand what actually occurred during the historic collapse of the sardine fishery in the 1940s. But for those of us who care, it’s important to compare historical data with the present. This is especially important because sardine fisheries were “virtually unregulated” on the West Coast during the Cannery Row era, but since then the U.S. sardine fishery has operated under strict management rules.

Consider that the sardine biomass declined from 793,000 metric tons in 1949, when sardines abandoned the Pacific Northwest, to about 3,000 metric tons in 1965, and the exploitation rate for adult sardines during most of the period was more than 50 percent — far cry from the fishery today.

Because this year’s stock assessment declined, Oceana claimed the sky is falling on sardines, and demanded that the harvest rate for 2013 be cut to 2 percent — which would effectively close the fishery entirely. The Scientific and Statistical Committee and Pacific Fishery Management Council knew the truth and rejected Oceana’s demands.

As an author of the sardine harvest policy, Dr. Richard Parrish makes these important points about key differences between then and now:

• Sardines have not abandoned the Pacific Northwest
• Sea temperatures have not chilled to the levels seen in the late 1940s

 Present harvest guidelines were designed so that the council would not have to change the harvest rate every time the stock size changed.

The up-and-down flexibility in harvest guidelines, based on annual biomass estimates, is an important feature to achieve optimum yield — which considers fisheries as well as forage.

These scientific facts support the Coastal Pelagic Species Management Team, cientific and Statistical Committee and Pacific Fishery Management Council’s decision that the current harvest control rules for sardine (and other CPS) are precautionary and going forward will continue to protect our marine ecosystem and fishery.

We can’t afford to destroy sardine and other CPS fisheries, the backbone of California’s fishing economy.

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

Santa Cruz Sentinel

National ocean policy sparks partisan fight

The wrangling threatens to overshadow a fundamental issue — the country’s patchwork approach to managing offshore waters. Twenty-seven federal agencies, representing interests as diverse as farmers and shippers, have some role in governing the oceans. Obama’s July 2010 executive order set up a National Ocean Council, based at the White House, that is designed to reconcile the competing interests of different agencies and ocean users.

Hurricane Sandy, Climate Change, and the Future of Fish

Brian Hajeski, 41, of Brick, New Jersey, reacts as he looks at debris of a home that washed up on to the Mantoloking Bridge the morning after Hurricane Sandy rolled through, Tuesday, October 30, 2012, in Mantoloking, New Jersey.

Hurricane Sandy’s terrible toll in lost lives and decimated communities is still being measured. But as we start to sort out the pieces, it’s also worth noting that the storm sent shockwaves through the mid-Atlantic region’s fishing industry. Harbors and infrastructure were pummeled and in some cases destroyed along the New York and New Jersey coastlines, and the Garden State Seafood Association has already asked Gov. Chris Christie (R-NJ) to formally request a federal fisheries disaster declaration.

In the aftermath of the storm, the link between our changing climate and increasingly extreme weather is coming into greater focus and being called out by an increasingly large caucus. (For more on the link between climate and extreme weather events in North America, see this new column by the Center for American Progress.) New York Gov. Andrew Cuomo was among the first to link Sandy’s fury to the “reality” of climate change. Bloomberg Businessweek ran a cover story under the banner headline, “It’s Global Warming, Stupid,” which called out the increasing spate of corporate voices accounting for climate change in their business models. And the magazine’s namesake, New York Mayor Michael Bloomberg, cited climate change as the tipping point that led to his much-ballyhooed endorsement of President Barack Obama for reelection.

Click here to read the full article.

More Sharks?

Video: Beached Humboldt squid in Santa Cruz

LIVE OAK — Sentinel reader Mark Shwartz was taking his daily walk on the beach when he discovered this beached Humboldt squid Saturday afternoon. He caught this video before returning it to the ocean and contacted his friend, professor Bill Gilly of Stanford’s Hopkins Marine Station, who confirmed it was a Humboldt squid, Shwartz said via email. Gilly also told Shwartz that many more Humboldt squid were washing up in the Pacific Grove area.

Story from Santa Cruz Sentinel

State lifts advisory for Ventura County shellfish, sardines, anchovies

State officials have lifted an advisory to avoid shellfish harvested recreationally off the Ventura County coast and all sardines and anchovies caught locally because of elevated levels of domoic acid.

The Aug. 20 advisory warned against eating recreationally caught mussels and clams; all anchovies and sardines caught locally, both commercially and recreationally; and internal organs of all crabs and lobsters from Ventura County.

The California Department of Public Health says recent samples confirm the levels of domoic acid have declined to safe or undetectable levels. Domoic acid is a naturally occurring nerve toxin that can cause illness or death in humans, according to the agency.

No cases of human poisoning from the acid are known to have occurred in California, state officials said.

For additional information click here.

DFG and Partners use Aircraft and Submersible Camera to Count Pacific Sardine

Department of Fish and Game (DFG) pilots and biologists, along with partners, used new technological tools above and below the water to study the sardine fishery.

DFG, in partnership with the California Wetfish Producers Association, flew over Southern California waters in DFG’s Partenavia P68 Observer aircraft to complete surveys for Pacific sardine in coastal waters. Also for the first time, DFG confirmed the aerial identification of the fish from a vessel positioned on the schools, using a submersible video camera. During the August surveys, DFG biologists photographed schools of sardine to capture distribution and abundance.

“These surveys will help DFG to manage this sustainable fishery and add to our limited understanding of sardine distribution throughout the Southern California Bight,” said Michelle Horeczko, Senior Environmental Scientist on the Coastal Pelagic Species Project. “Data from these surveys may also be used by West Coast scientists as part of a new effort to look at the full range of sardine data from Canada to Mexico.”

Continue reading full story here.

Is Fish Poop Critical To The Ocean?

Professor Deborah Steinberg of the Virginia Institute of Marine Science (VIMS) has dedicated her professional life to investigating crustaceans and their role in the “biological pump,” which is the process by which marine life transports carbon dioxide from the atmosphere and ocean’s surface to the deep sea. This cycle removes the carbon to a depth where it contributes nothing to global warming.

In a new study published in Tuesday’s issue of Scientific Reports, professor Steinberg partnered with Dr. Grace Saba of Rutgers
University and retrained her focus from crustaceans to small forage fish in order to gain an understanding of their role in this carbon removal process.

The research pair collected their data off the coast of southern California on an exploratory expedition aboard the research vessel Point Sur. Building on Steinberg’s knowledge of copepods and other small, drifting marine animals, gleaned from two decades of research, the team wanted to explore whether forage fish like crustaceans played a discernible role in the biological pump through their consumption of photosynthetic surface algae and subsequent release “fecal pellets”.
Read full story here.

Eating Fish While Pregnant Halves the Risk of ADHD

The amount of fish a woman eats while pregnant may affect her child’s chances of developing attention-deficit/hyperactivity disorder (ADHD).

Eating fish twice a week was linked to about a 60 per cent lower risk of a child developing certain ADHD-like symptoms, according to research from the Boston University School of Public Health.

But the type of fish eaten is key.

Elevated mercury levels, which can occur from eating certain types of fish, such as tuna and swordfish, were also tied to a higher risk of developing ADHD symptoms such as a short attention span, restlessness or being easily distracted.

‘The really important message is to eat fish,’ said assistant professor Sharon Sagiv, the study’s lead author.

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Fish on Fridays: Omega 3s vs. Mercury – Is Seafood Good For You?

It seems there’s a never-ending see-saw battle in scientific research about certain consumables. Red wine will decrease incidence of cardiovascular disease! No it won’t. Dark chocolate will lower your body mass index! Or not.

Seafood is no different. For every report that Omega 3 fatty acids are the fountain of youth, there’s another study warning seafood lovers about looming poison from excessive quantities of heavy metals, especially mercury. But are Omega 3s really that beneficial? And what to make of reports that selenium in fish can counterbalance the negative effects of mercury? And just what the hell is selenium, anyway? What’s the truth about fish?

Of course, there’s no black-and-white answer, but I’ll try to sort through a few of the bigger issues and provide a bit of guidance about what to look for at the fish counter to maximize the benefits and reduce your risk.

First of all, a disclaimer: I’m an ocean policy wonk, not a doctor, so take all this info with a grain of salt (figuratively, people, watch that blood pressure!) and ask your doctor if you have deeper questions—particularly if you’re pregnant.

Read more here