Saving Seafood

Federal regulators scramble as SC fish start to range north for cooler seas

March 25, 2019 — Shrimp boats from North Carolina pulled up to the McClellanville dock last week, loaded down with catch.

They had been trawling unrestricted ocean waters along the North Carolina-Virginia state line — in other words, hauling in shrimp that spawned in the Chesapeake Bay.

Until a few years ago that was unheard of: The bay just didn’t produce shrimp. It’s too far north.

But fish species are shifting their range as seas warm — four times faster than land species, according to a recent study.

The concerns are for a lot more than shrimp. It’s deep-water finfish as well as surface roamers, species like wahoo, snapper, grouper and cobia. Those are among the most sought after game and seafood fish, and the rules for all of them are under review.

As the waters warm this spring, the near-shore shrimping grounds will open. More of the half-million licensed recreational anglers in South Carolina will crank up boat motors and head out. Commercial boats are out there already. While the pressure on species from overfishing is a long-recognized and long-regulated issue, now there is a new one: How long will this fish even be there?

Anxiety is starting to churn in fishing communities over what will happen to their livelihoods or hobbies. The value to South Carolina of its rich shrimp and finfish waters has been estimated at $44 billion per year for both recreational and commercial fishing combined.

Read the full story at The Post and Courier

Will Large Protected Areas Save the Oceans or Politicize Them?

March 25, 2019 — How can we save the oceans? They cover two-thirds of the planet, but none are safe from fishing fleets, minerals prospectors, or the insidious influences of global warming and ocean acidification.

In the past decade, there has been a push to create giant new Marine Protected Areas (MPAs). They now cover nearly 9.7 million square miles, equivalent to more than the land area of North America. Cristiana Pașca Palmer, executive secretary of the UN Convention on Biological Diversity, says the world is on course reach the convention’s target of having a tenth of the oceans protected by next year.

But questions are being raised. The growth has been driven by the formation of giant MPAs bigger than many countries, often in remote regions where the threat to biodiversity is lower. So, critics are asking, are countries creating big distant MPAs to distract attention from the harder task of protecting trashed coastal ecosystems closer to home? And is there a geopolitical game afoot, a stealth rush to control the oceans for political ends? And does that explain why half of the ocean waters covered by MPAs are in the hands of the United States and two former European colonial powers, Britain and France?

Most ocean scientists see the rush to create vast MPAs as a boon to marine conservation. They are cost-effective, connect different marine ecosystems, and encompass larger parts of the ranges of migrating species such as whales and tuna, protecting “corridors of connectivity among habitats in ways not afforded by smaller MPAs,” says Bethan O’Leary, a marine scientist at the University of York in England.

Read the full story at Yale Environment 360

Now we know how much global warming is reducing the world’s seafood harvest

March 14, 2019 — Among all the knotted problems in the global food supply, it’s hard to think of one that has received more focused attention than global fisheries and the challenges of overexploitation, ecological intricacy, regulatory responses, and failures.

And yet, after decades of international treaties and sustainability studies and harvest limits  — some of the latter volunteered by industry  — a majority of the world’s most important fishing stocks continue to decline.

Overfishing remains the key driver; other factors include pollution and habitat destruction. A typical status report will mention climate change, too, always as an afterthought, an emerging force whose impact cannot yet be calculated.

That changed at the end of February with publication in the journal Science of groundbreaking research that filtered out all other factors, then measured the influence of a warming ocean all on its own. Its unusual approach was to generate a “hindcast,” looking backward through nearly a century of data on seawater temperature and laying these against a standard measure of abundance for fish and shellfish  — maximum sustainable yield  — that has been in use since 1930.

Read the full story at MinnPost

Vanishing ice in the Bering Sea drops to lowest level since 1850

March 8, 2019 — For the second straight year, the Bering Sea — a turbulent and bountiful stretch of the northern Pacific Ocean — is virtually ice free at a time of year when it should be gaining ice.

Why it matters: The ice pack’s ebb and flow each year has far-reaching consequences for the broader Bering Sea ecosystem, including determining the reach and abundance of prized fish species such as Alaska pollock and Pacific cod. This is the richest fishing ground in the U.S., featured in the Discovery Channel’s “Deadliest Catch.”

The big picture: Scientists who keep close tabs on this region say the ice’s early melt is upending life in the Last Frontier. It also portends consequences for the Lower 48 states and beyond. In a new study published in Earth’s Future on Thursday, scientists warn that Arctic climate change is already reverberating far outside the region.

  • By the end of February, Bering Sea ice extent was lower than it has been since written records began in 1850.
  • The March 6 departure from the long-term average shows that an area of ice equivalent to California and Montana combined is missing from the Bering Sea.

Read the full story at Axios

Gulf of Maine Research Institute receives $790K grant to study impact of warming ocean on key species

March 6, 2019 — The National Science Foundation awarded the Gulf of Maine Research Institute a $789,659 grant to examine the impact of a warming climate on growth and population patterns in cod and lobster in the Gulf of Maine.

The study will also document marine habitat shifts across the northwest Atlantic caused by rising temperatures, according to a March 4 news release issued jointly by the offices of U.S. Sens. Susan Collins, R-Maine, and Angus King, I-Maine.

The funding will aid the institute in its work to better understand and mitigate the impacts of changing ocean conditions on Maine communities, marine ecosystems and economy, King and Collins said in the release.

The grant was awarded through the National Science Foundation’s Division of Ocean Sciences.

Read the full story at Mainebiz

 

Sen. Murkowski warns climate change ‘directly impacting’ Alaska

March 6, 2019 –Sen. Lisa Murkowski (R-Alaska) on Tuesday said climate change is “directly impacting” her home state’s way of life.

“It’s impacting subsistence. It’s impacting food security. It’s certainly impacting our economy with our fisheries,” Murkowski, the chairwoman of the Senate Energy and Natural Resources Committee, said at the panel’s first hearing this year devoted to climate change.

“Clearly the effort here is to get a bipartisan conversation going,” she added. “I think that the rhetoric surrounding the issue of climate and climate change can be so heated and so animated and so, often times, just a very toxic discussion that you can’t get to focusing on the solutions.”

The Senate panel heard from experts on how climate change was impacting the electricity sector. Murkowski and the panel’s top Democrat, Sen. Joe Manchin (W.Va.), highlighted their energy-producing states in their remarks, though.

Murkowski said her state is seeing diminishing sea ice and a change in wildlife migration patterns. And she expressed concerns that rural communities throughout her state aren’t using green energy.

Read the full story at The Hill

 

As warming waters push fish north, fishing communities have little choice but to follow

March 1, 2019 — In 1997, large commercial fishing boats based in the coastal town of Beaufort, North Carolina began shifting about 13 miles northward per year. By the end of 2014, they were harvesting off the coast of New Jersey. Although this was an unusual circumstance, it wasn’t singular. As it turns out, many large-scale fishing operations along the East Coast followed similar patterns of movement within that time frame. These shifts will persist or even intensify if climate change continues to warm up our oceans, according to new research published in the latest issue of ICES Journal of Marine Science.

In the past century, global warming has gradually raised the temperature of water along the Atlantic seaboard. Like moneyed New Yorkers taking to the Hamptons to escape city heat, fish close to the coastline are swimming away from their usual marine homes and toward cooler and more comfortable waters. As a result, fishing operations are getting disrupted. While the stories of fishers who have to travel longer and longer distances to secure their catch are well documented, the movements of fishing communities over time have not been mapped until now.

Talia Young, a postdoctoral fellow at Princeton University, conducted the first-of-its-kind ICES study in part because she wanted to bridge what she felt was a disconnect between the empirical data of marine species migration and its impact on humans.

Read the full story at The New Food Economy

Earth’s fish are disappearing because of climate change, study says

March 1, 2019 — Climate change is endangering fish worldwide, shrinking populations by up to 35% in coastal regions near China and Japan, scientists say.

Ocean warming has led to a 4% global decline in sustainable catches, the greatest amount of fish that can be caught without depleting stocks long-term, according to a study published Thursday in the journal Science.

Using global data on fisheries and ocean temperature maps, scientists from Rutgers University in New Jersey analyzed changes in sustainable catches triggered by temperature rises between 1930 and 2010.

The scientists said they were “stunned” to discover that global warming has significantly affected fish stocks worldwide and warned that the decline could threaten the livelihoods and food supplies of millions of people.

More than 56 million people worldwide work in the fishing industry, and seafood provides up to half of all animal protein eaten in developing countries, the scientists said.

The most drastic decline was recorded in Asia’s coastal regions, including the East China Sea and Japan’s Kuroshio Current, where stocks plummeted by 15% to 35% over the past 80 years.

“Ecosystems in East Asia have seen enormous declines in productivity. These areas have particularly rapid warming [and] also have historically high levels of overfishing,” said lead researcher Chris Free, a quantitative ecologist at the University of California,

Read the full story at CNN

Climate change is depleting our essential fisheries

February 28, 2019 — A new study published Thursday in the journal Science outlines the impacts warming waters are having on commercially important fish species.

The world’s fishing industry relies on what’s called fisheries, the clusters of regional fish populations that people can catch economically. And on average, the researchers found that the numbers of fish in critical fisheries around the world have decreased by four percent since 1930.

Fisheries located in the Sea of Japan and the North Sea were the worst off. They experienced as much as a 35 percent drop in their numbers. Other fisheries, however, benefitted from warmer waters, and their populations grew, an expansion scientists warn could create unsustainable competition for resources.

“We were surprised at the strength the impact of warming has already had on fish populations,” says the study’s lead author, ecologist Chris Free at the University of California Santa Barbara.

Read the full story at National Geographic