Saving Seafood

Study: Narragansett Bay temps reached record highs, lows last year

January 15, 2016 — SOUTH KINGSTOWN – An oceanographer at the University of Rhode Island’s Graduate School of Oceanography said temperatures in Narragansett Bay hit record highs and lows in 2015.

Jeremy Collie said the temperatures represent the “most extreme” fluctuations observed since the school started surveying the waters 56 years ago.

“What really stands out with our findings is that we had extreme cold and extreme heat in the water temperature in 2015,” Collie said in a statement. “So even though the world is warming because of climate change, we’re still going to have these extremes.”

The findings came from GSO’s Narragansett Bay Fish Trawl, which is done to sample fish every week in the bay and track seasonal or annual changes of marine life. Water temperature also is recorded weekly at the same site off Wickford Village in North Kingstown. Collie has managed the trawl since 1998.

Read the full story at Providence Business News

 

How Probiotics Can Save the East Coast Shellfish Industry

January 12, 2016 — Bob Rheault was having an open house at his young shellfish hatchery, so he arrived early in the morning with bottles of wine and plates of cheese. That’s when he noticed he had a problem.

“There was an odd substance floating on the surface of the tanks,” Rheault says. He looked through a microscope, “and there were no bodies to be seen … just empty shells with bacteria climbing all over them.”

In oyster and clam hatcheries, a bacterial infection can cause the population to drop from 10 million to 1,000 larvae overnight. That’s what happened to Rheault, who had no larvae to show his open house guests. Antibiotics aren’t approved for use in U.S. shellfish hatcheries (though they are worldwide)—and, by the time an infection sets in, all the larvae are dead anyway—so the only thing for a hatchery owner to do when confronted with an infection is dump everything out, clean the tanks, and start over.

Or that used to be the only approach. Now, researchers at two labs seem to have found a solution.

The problem of bacterial infections in hatcheries has been worsening over the past decade as the waters of the Northeast warm. Rheault, who is now the president of the East Coast Shellfish Growers Association, says that thanks to climate change, bacterial infections now kill off 10 to 20 percent of the Northeast’s shellfish larvae each year. And because the bacteria, Vibrio, gets into the tanks via seawater, it affects not only shellfish but also lobsters, by turning their shells black and making them impossible to sell. (Some lobstermen eat the animals themselves or send them to be cooked and processed, since the meat is still good.)

Researchers have now found a tool to fight the Vibrio bacteria: probiotics. Teams at both NOAA’s Milford Laboratory in Connecticut and the University of Rhode Island (URI) have harvested beneficial bacteria from healthy adult oysters that can help oyster larvae fight off bacterial infections. And the URI researchers are exploring the possibility that a similar concoction could help treat lobster shell disease as well.

Read the full story at Civil Eats

 

Auto-aquaculture? Conference in Woods Hole explores possible uses for robots and automation to reduce costs

January 12, 2016 — WOODS HOLE, Mass. — Yogesh Girdhar wowed the room with a video of what looked like a small shoebox awkwardly paddling underwater.

What Girdhar, a post-doctoral scholar at Woods Hole Oceanographic Institution, called a “curious robot” had none of the cachet of the sleek autonomously operated torpedoes, high-tech miniaturized laboratories, or parasite-zapping lasers that had already been displayed at a conference held Monday at the institution’s Quissett Campus to explore the role of robots and automation in aquaculture.

But his clumsy looking creation filled a need in the minds of many at the conference. As it paddled along, its software played the favorite childhood learning game — one of these things is not like the others — picking out a small coral head sticking up from the sand and zeroing in on it. The program, Girdhar said, would help a free-swimming vehicle, patrolling inside a fish cage far out to sea, recognize and investigate anomalies such as dead fish, a hole in the net, even evidence of disease. It could then notify its owners that something was wrong, prompting additional investigation.

It’s the kind of innovation conference organizers hope will make offshore aquaculture more cost effective.

“Open-ocean aquaculture is a high-cost way of producing fish that hasn’t really taken hold yet,” said Hauke Kite-Powell, a WHOI researcher in marine policy. “The challenge is to make it cost-competitive with near-shore aquaculture.”

With the world population projected to climb from 7 billion in 2011 to 9 billion by 2040, the demand for food, especially protein, will also soar. A diminishing water supply, droughts and less arable land are squeezing agriculture and land-based meat production.

Unfortunately, the one resource people once believed was limitless, wild fish, has proven to be all too finite. Mismanagement, overfishing, climate change and other factors have depleted fish stocks worldwide.

Read the full story at Cape Cod Times

Shellfish Farmers Fear Ocean Acidification May Affect Harvests in 2016

January 8, 2016 — Ocean acidification was blamed for the shutdown of the Washington oyster fishery last year and B.C. could be next, partially for the same reason, said Rob Saunders, owner of Island Scallops at Qualicum Beach.

Speaking to TheProvince, Mr Saunders said that Island Scallops, which provides seed oysters and scallops for farmers, lost 90 per cent of its oyster larvae last year.

Acidic water affects the oysters’ ability to grow a hard shell. It takes two years for oysters to mature for harvest, and Mr Saunders said oysters may be in short supply this year.

Read the full story at The Fish Site

How Maine lobsters’ future could depend on seaweed that surrounds them

January 4, 2016 — As the global focus on climate change shifts from negotiations in Paris to taking action to limit the globe’s average temperature increase, the focus is decidedly terrestrial. The text of the climate accord finalized last month isn’t exceedingly detailed when it comes to climate change mitigation strategies, but it devotes special attention to the importance of the world’s forests.

Meanwhile, there’s only one mention in the document’s 32 pages of a natural feature that covers 71 percent of the Earth’s surface, contains 97 percent of its water and produces at least half of its oxygen.

Oceans — which dissolve about a quarter of the world’s climate change-causing carbon dioxide — are key to any effort to combat climate change. And, of special importance to a coastal state such as Maine, oceans and the creatures that live in them are particularly susceptible to the consequences of climate change, from sea level rise to the increasing acidity of the world’s oceans.

There have been several reminders of that reality over the past year.

Read the full editorial at the Bangor Daily News

Artistic scientist illustrates effects of climate change

December 30, 2015 — Old Town’s Jill Pelto has been visiting the North Cascade Glaciers of Washington State with her father since she was 16 years old.

“I had seen pictures growing up of my dad’s trip, but it doesn’t prepare you for what it’s like out there,” Pelto said. “I was amazed at how beautiful the glaciers are.”

The rugged mountains and snowy summits were stark and beautiful.

“I was in awe,” she said.

She’s returned to Washington State every year since then, but things have drastically changed since her first experience at 16 years old.

Now she’s trying to explain those changes through her artwork.

Originally from Worcester, Massachusetts, Pelto, now 22, graduated in December from the University of Maine as a double major in studio art and earth science.

“I started working in Washington in 2009 when I was 16,” Pelto said. “I was able to do that because my father, Mauri Pelto, got his Ph.D. at UMaine, and when he was a doctoral student here he started a research project in Washington that he’s still doing now. The purpose [of the project] was to create a continuous glacial monitoring program where every year he would survey the glaciers to figure out how the size was changing.”

Mauri Pelto, a professor of environmental science at Nichols College in Massachusetts and glaciologist, started the North Cascade Glacier Climate Project in 1984 and has studied glaciers and the rapid changes they have undergone for over 25 years.

Read the full story at Bangor Daily News

 

Ocean acidification poses threat to lobsters

December 18, 2015 — PROVIDENCE — Lobsters are already slowly moving out of southern New England as waters warm, but the iconic crustacean faces another future threat as the climate changes.

As oceans absorb more carbon and become increasingly acidic, juvenile lobsters likely will have a harder time growing and forming strong shells to protect them from predators, according to a recent University of Rhode Island study.

“I’m not sure yet what the mechanism is that is affecting their growth,” URI doctoral student Erin McLean, who led the research, said. “But it takes energy for them to regulate the increased acidity, which is energy they cannot then put toward growth.”

And it’s not just lobsters that could be harmed by the oceans’ changing pH levels. Shellfish populations in Rhode Island and Massachusetts in general are among the most vulnerable in the United States to ocean acidification, according to a recent study in the journal Nature Climate Change.

The study identified the two states among 15 at-risk areas in the nation because colder, northern waters, such as Narragansett Bay, Buzzards Bay and Nantucket Sound, are absorbing more carbon dioxide from the atmosphere and acidifying faster than warmer waters.

Other more localized factors are also playing a part, including nutrient pollution from fertilizers and sewage systems that can add more carbon to the water and the flow of fresh water from poorly buffered rivers, such as the Blackstone in Rhode Island or the many waterways that drain into the Gulf of Maine, which lack minerals to mitigate the effects of acid. Shallow coastal waters also are more susceptible to changes in the ocean’s chemistry.

About a quarter of all carbon emissions from power plants, cars and other sources are absorbed by the oceans, making them more acidic and reducing carbonate levels. Shellfish use carbonates to make their shells, and when fewer of the compounds are available, organisms must expend more energy to build shells and less on eating and survival, researchers say.

Read the full story at Providence Journal

New England Lobstermen Still Fishing Thanks to Mild Winter

December 28, 2015 (AP) — Many New England lobstermen are still fishing deep into December this year because of unseasonably warm weather and an abundance of the critters, and Maine’s beloved scallops are a little harder to come by as a result.

The extra fishing hasn’t done much to change the price of lobsters, which are selling in the range of $8 to $10 per pound in Maine, typical for this time of year, when Canada is also hauling in large catches. But some lobstermen in Maine, the biggest lobster-producing state, also fish for scallops and haven’t made the transition to the winter scalloping season because lobster fishing is still strong.

As a result, Maine scallops — which usually cost about $20 per pound — have been slightly more expensive, sometimes selling in the $25-per-pound range, and some retailers are low on supply. Alex Todd, a Portland scallop and lobster fisherman, said he expects scallop fishing in the southern part of the state to pick up in mid-January. Supply from scallop-rich Cobscook Bay is helping feed demand for now, he said.

Read the full story from the Associated Press at ABC News

 

International Study Finds Indian Ocean Warming Reducing Fish Catch

SEAFOODNEWS.COM [First Post] By Dinesh C Sharma — December 22, 2015 — Even as the world tries to make sense of decisions taken at the recent climate change conference in Paris, scientists have come up with fresh evidence of how global warming is beginning to nibble the food chain right in India’s neighbourhood – the Indian Ocean.

Oceans play a critical role in both short and long term weather and climatic patterns. Nearly 90 percent of extra heat generated due to emission of greenhouse gases from the landmass is absorbed by oceans, warming them up. Indian Ocean, considered one of the most productive seas, has seen warming greater than other oceans. The warming in Indian Ocean during the past century has been estimated up to 1.2 degree C, which is very large compared to a global surface warming of up to 0.8 degree C during the same period.

Now an international study led by scientists from Pune-based Indian Institute of Tropical Meteorology (IITM) has shown that the warming of Indian Ocean is affecting productivity of its marine eco system. Simply put, the food web necessary for fish production in the seas is getting affected due to the warming. This, in turn, is resulting in dwindling fish catch rates in the Indian Ocean.

The decline in phytoplankton- microscopic plants that are part of the aquatic food web – is significant. Phytoplankton contains chlorophyll and provides food for a range of sea creatures including fish. The rapid warming in the Indian Ocean has played an important role in reducing the phytoplankton up to 20 percent during the past six decades, the study has reported.

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

WAITT INSTITUTE: Top 15 Ocean Conservation Wins of 2015

The Waitt Institute is a non-profit organization based in Washington, DC. It was founded in 2005 by Ted Waitt (co-founder of Gateway Computers) to foster exploration and discovery. The focus of the Waitt Institute has shifted in recent years, and today its mission is “empowering communities to restore their oceans to full productivity.” To achieve this, the Waitt Institute directs its efforts toward fostering deep collaborations with local governments and communities to create comprehensive ocean zoning and management solutions.

December 23, 2015 — Overfishing, climate change, habitat destruction, and pollution remain major threats to the world’s ocean. But amidst all that there is some seriously good ocean conservation news worth celebrating. So, to continue the tradition started last year with listing 14 Ocean Conservation Wins of 2014, here’s a rundown for 2015 that will hopefully fill you with #OceanOptimism. These wins represent the diligent efforts of organizations and individuals too numerous to list, so let’s just start with a blanket shoutout to all of #TeamOcean for a great year.

#1. Over 2 million km2 of ocean was protected in big new marine reserves. Marine reserves are areas completely closed to fishing, and 2015 saw more ocean protected in a single year than ever before. Chile created Desventuradas Marine Park (297,000 km2), and Easter Island Marine Park 631,000 km2). New Zealand created Kermadec Ocean Sanctuary (620,000 km2), Palau created Palau National Marine Sanctuary (500,000 km2), the UK announced the Pitcairn Island Reserve (833,000 km2), and protected areas are in the works for Patagonia. However, there is a broad consensus that 30% of the ocean should be fully protected in reserves, and these new designations only get us up to 1% – but we’ll take it!

#2. New technology is being developed to combat illegal fishing. Designating all these new reserves means little without enforcement, and we can’t enforce unless we know what’s happening out on the water. One big tech effort launched this year is Global Fishing Watch, a partnership between Skytruth, Google, and Oceana to track fishing vessels and identify illegal fishing. Another similar program is the Pew Charitable Trust’s Virtual Watch Room. These technologies are in prototype phase and need significant improvement before they live up to expectations, but it’s a promising and exciting development.

#3. Illegal fishing boats are being chased down and caught! Sea Shepherd chased a pirate fishing boat on Interpol’s most wanted list for 10,000 miles, until the boat sank (potentially on purpose to drown the evidence of illegal fishing). Another boat was chased for four days, caught, and fined $2 million for illegally fishing in the Phoenix Islands Protected Area. Blackfish and Environmental Justice Foundation have also been stepping up to make sure enforcement happens, but hopefully we can soon rely on law enforcement organizations, not environmental groups, to do this work.

Read the full story from the Waitt Institute at National Geographic