Saving Seafood

Study finds aquaculture production vulnerable to climate change

December 16, 2021 — Unchecked global warming could reduce global aquaculture production by as much as 16 percent by 2090, a new study from the University of British Columbia Institute for the Oceans and Fisheries shows.

Marine aquaculture, or mariculture, could double its output by 2050, from a current 30 million metric tons (MT) per year live-weight to 74 million MT, but UBC’s researchers modeled that estimate against climate change scenarios and found climate change to be a more serious threat to the industry than expected.

Read the full story at SeafoodSource

The Lobster Trap

December 14, 2021 — A hard rain falls all around Johnny McCarthy, beading across the sprawling deck of his brand-new lobster boat, as he steers around the hidden threat of Folly Ledge through an ink-black night and into his home port.

His journey this midsummer night is momentous: a maiden voyage on the boat he’s always dreamed of, from the boatyard where her hull took final shape to the harbor where their fates will be made together.

You’d never know it to meet McCarthy – an unassuming, soft-spoken man who goes to work in a T-shirt and waterproof oilskins – but he is, at 32, among the most successful lobstermen in a place where lobster is king. On this remote and rocky island, 15 miles offshore, virtually everyone from the grocery clerk to the family doctor traces their living back to the tanks full of lobster that these boats haul into port each day.

The Gulf of Maine has been kind to McCarthy and his neighbors. The vast expanse, which stretches from Cape Cod to Nova Scotia, is one of the fastest warming ocean territories on the planet – and, for 30 years, that trend worked in Vinalhaven’s favor, turning the waters that surround the island into a near-perfect nursery for lobster. It is now the state’s second-richest port, and hard-working men and women like McCarthy have joined Maine’s one-percenters, pulling in hundreds of thousands of dollars per year in a state where the average worker earns about $32,000.

McCarthy’s decision to invest in a new $650,000 boat – a gleaming, green-hulled fiberglass beast, 45 feet long and the envy of every captain in Vinalhaven’s 200-boat fleet – was a vote of confidence that the good times would continue. At least it was when he made the down payment three years ago.

That was before the coast of Maine became a front line in the battle over climate change.

Read the full story at the Portland Press Herald

Protests and Prayers

December 14, 2021 — When she heard the news, in the middle of her shift selling tickets at the ferry terminal, Cathy Watt broke down in tears.

The U.S. government had just ordered the unprecedented closure of a 1,000-square-mile swath of ocean off Maine’s coast to traditional lobster fishing for four months a year, starting in October. It was the latest in a chain of crushing repercussions linked back to climate change: Warming oceans have hastened an endangered whale’s journey to the brink of extinction, and now Maine fishermen would pay the price.

Watt worried about her lobsterman son, a 30-year-old father of three who had just bought a new house. She nervously twisted her wedding band on her finger as she thought of her husband, a 48-year-old lobsterman and church deacon who counseled other fishermen through tough times — more of which, she feared, lay just ahead.

“It’s not like we can just go down to the next office building and find some new career that will take care of our family,” Watt said as she gestured toward Main Street, home to two dozen island businesses, many of which shut down in winter.

Flustered by the depth of her emotion, she wiped tears away and struggled to compose herself: for her young granddaughter, there beside her in the tiny ticket office with its smell of must and brine, and for the next customer in line.

At stake she felt was the future of their island, and the whole Maine coast.

Read the full story at the Portland Press Herald

One of Connecticut’s last lobstermen sticks with it, despite his near empty hauls

December 14, 2021 — For the better part of a half century, the waters of Long Island Sound allowed Michael Grimshaw a good living. Now, he’s holding fast to a dwindling hope that the ocean’s bottom still has something — anything — to give.

Grimshaw is believed to be the last full-time commercial lobsterman in Connecticut — still plying a fishery that was once thick with boats and rich with opportunity.

His youngest son preparing bait and his elderly, former mother-in-law readying claw bands, Grimshaw, 65, prodded his aging boat into the choppy harbor late one summer morning, well after most fishermen have put to sea.

Suited up in his wet gear, he was soon hauling up traps from the dark waters, one after another. Out of 10 traps, he snared some spider crabs and a few pogies. None contained a lobster.

“It’s embarrassing — terrible, really,” said Grimshaw, who continues to raise hundreds of traps a week, even though he claims to have retired. “I used to be the big dog; now, I’m the puppy.”

During his glory days in the late 1990s, when he competed with hundreds of other commercial lobstermen in the area for a multimillion-dollar annual catch, his traps used to bring up as much as a few thousand pounds a day of the coveted crustaceans. A good day now amounts to maybe 50 pounds.

The main culprit? Climate change.

Read the full story at the Boston Globe

 

The U.S. South Atlantic Marine Ecosystem: An Ecosystem In Transition

December 13, 2021 — Today, NOAA released the first U.S. South Atlantic Ecosystem Status Report. This report gives an overview of the current status and long-term trends of key marine ecosystem indicators. Some of the trends it examines are:

  • Sea surface temperature
  • Ocean acidification
  • Gulf Stream dynamics
  • Status of fish communities and harvested stocks
  • Trends in protected species
  • Recreational fishing pressure

This report provides a look at the ecosystem as a whole, rather than its individual parts. This helps resource managers, such as the South Atlantic Fishery Management Council, scientists, and other partners understand how the ecosystem is connected and is changing. The report provides a holistic assessment of the ecosystem that can be used to inform management and policy decisions.

“Having one place for scientific information on the entire marine ecosystem is crucial to enhancing our understanding of how the ecosystem functions and may be changing over time,” said Kevin Craig, Research Fishery Biologist at NOAA’s Southeast Fisheries Science Center. “This is needed to effectively manage the many resources the ecosystem provides, including support for economically valuable fisheries. We all need to see the whole picture, not just one piece.”

Read the full story from NOAA Fisheries

Heat, no food, deadly weather: Climate change kills seabirds

December 2, 2021 — The warming of the planet is taking a deadly toll on seabirds that are suffering population declines from starvation, inability to reproduce, heat waves and extreme weather.

Climate-related losses have hit albatrosses off the Hawaiian islands, northern gannets near the British Isles and puffins off the Maine coast. Some birds are less able to build nests and raise young as sea levels rise, while others are unable to find fish to eat as the ocean heats up, researchers have found.

Common murres and Cassin’s auklets that live off the West Coast have also died in large numbers from conditions scientists directly tied to global warming.

With less food, rising seas that encroach on islands where birds roost and increasingly frequent hurricanes that wipe away nests, many seabirds have been producing fewer chicks, researchers say.

And tern species that live off New England have died during increasing rain and hailstorms scientists link to climate change. Some species, including endangered roseate terns, also can’t fledge chicks because more frequent severe weather kills their young, said Linda Welch, a biologist with the U.S. Fish and Wildlife Service.

Read the full story from the Associated Press

Climate Extreme Intensifies Conflict Between People and Whales

December 2, 2021 — New research looks at how a climate extreme intensifies tensions between ocean life and people, and what can be done about it. The study was recently published in the Proceedings of the Royal Society of London B.

Researchers show that many strategies are insufficient during prolonged, anomalous warm water events called marine heatwaves. Instead, they recommend combining several approaches, including improved forecast systems, technological innovations, and understanding human behavior.

Over the past few years, marine heatwaves have dramatically affected natural resources along the U.S. West Coast, including economically valuable fisheries. Still, we know very little about how and when management actions can dampen their impacts on marine life and the people who rely on the ocean for their livelihoods.

An ecological pileup of recent unprecedented changes in the ocean off the West Coast led to record numbers of reported entanglements of humpback and other whales. These conditions put California’s Dungeness crab fishery, the region’s most valuable commercial fishery, at odds with the conservation of several at-risk whale species.

Read the full story at NOAA Fisheries

 

Researchers Study the Effects of Harmful Algal Blooms

December 1, 2021 — The sample bottle came back from the river, over the gunwale, and into the boat. The water sample was a dark reddish-brown, like strong, steeped tea that you are unable to see through. Literally tens of thousands of algal cells made up every drop of the water sample. Back at the laboratory, scientists at the Virginia Institute of Marine Science (VIMS) will analyze the sample to determine the type and density of algal species in the water. The samples, taken from the York River in the Southern Chesapeake Bay allow scientists to study harmful algal blooms, also called HABs. According to NOAA’s National Centers for Coastal and Ocean Science, almost every state in the nation now experiences some kind of HAB event. The number of hypoxic water bodies in the United States has increased 30 fold since the 1960s, with more than 300 coastal systems now impacted.

As you might guess from the name, the tiny microscopic organisms making up HABs are algae, which are a very diverse group of organisms. Phytoplankton are a type of algae usually responsible for creating blooms. Most often, these phytoplankton are made up of an equally diverse group of organisms known as dinoflagellates, which can be found in both fresh and marine waters.

Blooms Occur Worldwide

HABs are a growing concern worldwide, occurring in the Gulf of Mexico and surprising places such as the Alaskan Arctic. Globally warming water temperatures, a result of our changing climate, is one reason blooms are occurring more frequently and over a global scale.

Read the full story at NOAA Fisheries

Due To Climate Change, Ocean Habitats Could Be Remarkably Different By 2060

December 1, 2021 — A new study projects how climate change will affect the oceans, and protected areas in particular. The scientists used a series of different warming scenarios to determine how climate change might alter the oceans.

According to lead author Steven Mana’oakamai Johnson, “In all three scenarios, conditions in more than half of the ocean are going to be novel, meaning new and significantly different, than they have been in the last 50 years.”

Due to the strong links between the ocean and atmosphere, the ocean will continue to absorb fossil fuel emissions and its internal chemistry will shift in such a way that it could require updated conservation measures for 97% of large marine protected areas. And, unchecked climate change could cause increases in acidity as soon as 2030.

Read the full story at Forbes

In Scotland, Serving Halibut for a Better Planet

November 30, 2021 — Inver restaurant is but a speck on the longest sea loch in Scotland. From its windows, a diner can see the remnants of a 15th-century castle and the rolling hills of the Highlands, but the breakout star is not the view. It’s a meaty halibut head that the chef Pam Brunton grills over wood and finishes with melted homemade ’nduja and a tangle of grilled green onions.

The small halibut she butchers have been raised in sea-fed pens on the Isle of Gigha, a nearby community-owned island whose farmed halibut have become the darling of people who care a lot about where their fish and shellfish come from.

Ms. Brunton, who could be Alice Waters’s Scottish niece, runs Inver with her partner, Rob Latimer. The tiny restaurant and inn is about 70 miles from Glasgow, where in November heads of state, including President Biden, thousands of diplomats and a flood of environmental activists like Greta Thunberg gathered for COP26, the United Nations global climate conference.

Ms. Brunton’s halibut heads may not seem like much of a hedge against the catastrophic effects of fossil fuel and methane gas emissions, but a group of cooks and diners here say that putting sustainable Scottish seafood on the plate is at least one tangible (and delicious) move toward a better planet. The shift is away from fin and shellfish whose populations are threatened by climate change or harvesting practices.

Read the full story at The New York Times