Saving Seafood

Cleaner fuels for fishing boats could backfire on the climate

February 5, 2016 — Fish is better than pork and beef—not just for your body, but for the planet. That’s long been the thinking, anyway. But a new study has uncovered a hidden climate impact of the fishing industry—one that, ironically, will get worse as boats switch to cleaner fuels. In some cases, the effect could make fishing for tuna as hard on the climate as raising pork, and trawling for shrimp about half as bad as raising beef.

Hogs and cattle get a bad rap because they—and their manure—emit a lot of methane, a powerful greenhouse gas. But the fishing industry also contributes to climate change: mostly from the carbon dioxide (CO2) from burned diesel fuel that persists in the atmosphere for hundreds of years. The boats produce other short-lived pollutants, such as sulfur oxides and black carbon, which have cooling and warming effects, respectively. But they have typically been neglected as unimportant in the grand scheme of things.

The new study may change that. Elliott Campbell and Brandi McKuin, environmental engineers at the University of California (UC), Merced, estimated fishing industry emissions by combining fisheries catch records with the amount of fuel typically needed to catch various species. Given the total burned fuel, they estimated the amounts of the pollutants, using information about engine types and fuel types. Black carbon, a form of soot that arises from incomplete combustion, has been underestimated by an order of magnitude in previous studies, the team reports in the Journal of Geophysical Research: Atmospheres.

Read the full story from Science Magazine

WHSTEP Meeting Topic Is Human Influence On Fisheries

February 5, 2016 — “Human Influence on Fisheries in New England: Then and Now” is the topic of the winter meeting of the Woods Hole Science and Technology Education Partnership (WHSTEP) on Wednesday, February 10, at 4 PM.

The meeting will be held at the Woods Hole Science Aquarium conference room and is free and open to the public.

Michael Fogarty of the Northeast Fisheries Science Center will present “At the Epicenter: Climate Change in the Western North Atlantic.” Robert Rocha of the New Bedford Whaling Museum will talk about “Whales: Yesterday, Today, and in the Classroom.”

Read the full story at The Enterprise

 

Maine lobster industry wary as warm waters suggest repeat of disastrous 2012 season

February 4, 2016 — For those in the lobster industry, any sign of a return to the conditions of 2012 is cause for high anxiety.

Researchers say the industry needs to be prepared for that possibility because warming trends are laying the groundwork for a potential repeat of the disastrous season of four years ago.

“We learned a hard lesson in 2012,” said Patrice McCarron, executive director of the Maine Lobstermen’s Association.

Because of warm waters in the Gulf of Maine, peak harvesting started in May that year, weeks ahead of schedule. The catch jumped more than 20 percent, from 104 million pounds in 2011 to 127 million pounds in 2012. The shedding season, when lobsters lose their hard shells and grow new ones, typically happens in June and results in soft-shelled lobsters that are difficult to transport. In 2012, shedding began almost as soon as the lobstermen started pulling in traps, and extended into the fall.

As a result, prices paid to lobstermen fell to as low as $2 a pound.

Andrew Pershing, chief scientific officer at the Gulf of Maine Research Institute in Portland, said Thursday that the stage is set for a possible repeat of 2012, at least weather-wise.

Pershing said five buoys that measure water temperatures around the gulf are all running above average, and three are at record highs.

“The average surface temperature across the entire Gulf of Maine is now slightly warmer than during the 2012 ocean heat wave,” Pershing said.

Read the full story at Portland Press Herald

Climate change poses threat to fish stocks, study finds

February 3, 2016 — Over the coming decades, dozens of marine species from the Carolinas to New England will be threatened by the warming, changing currents and the increased acidity expected to alter the region’s waters, according to a new study by scientists at the National Oceanic and Atmospheric Administration.

Atlantic salmon, winter flounder, bay scallops, ocean quahogs, and other species may face the kind of trouble from climate change that has been linked in previous research to the decline of Atlantic cod, which has lost an estimated 90 percent of its population over the past three decades, the study found.

The authors of the study, released Wednesday by the journal Plos One, found that half of the 82 species they evaluated along the northeastern coast are “highly” or “very highly” vulnerable to the effects of climate change, meaning their populations and ability to reproduce are likely to decline.

“The results show that climate change presents significant challenges to the region’s fishery management and to its ability to sustain fishing communities,” said Jonathan Hare, a NOAA oceanographer who was the lead author of study.

The study also found that 80 percent of the species studied are likely to move beyond their normal habitats.

Read the full story from the Boston Globe

 

Maine to pay for research in effort to keep lobster fishery healthy

February 4, 2016 — Maine’s lobsters are about to get new scrutiny.

The Department of Marine Resources has put out a call for proposals to gauge the impact of warming Gulf of Maine waters on lobster biology, populations and susceptibility to disease. A separate study will attempt to measure the economic impact of Maine’s most valuable fishery beyond what lobstermen are paid for their catch.

The department has earmarked up to $700,000 to pay for the studies, with the money coming out of the Lobster Research, Education and Development Fund. The money in that fund comes from sales of the lobster license plate.

Research proposals are due Thursday. The department’s request for proposals suggests the contracts will be awarded by early March, but department spokesman Jeff Nichols said the timing depends on how many proposals are received and how quickly a panel is formed to review them.

The department said it needs the research to determine how to help maintain the industry’s remarkable health over the past 20 or 30 years. Lobster landed in Maine was valued at a record $465.9 million in 2014, up more than fourfold in the past two decades. The catch by 5,818 commercial license holders made up 78 percent of the value of commercial fishery landings in the state.

Carl Wilson, director of the department’s Bureau of Marine Science, said “there are sufficient questions” about what’s happening with climate change and its impact on the Gulf of Maine to warrant more study.

Read the full story at Portland Press Herald

 

These Fish Species Are Most Vulnerable to Climate Change

February 3, 2016—Scallop and salmon are among the species of fish most vulnerable to the warming of ocean waters due to climate change, according to new research.

The study, conducted by researchers from the National Oceanic and Atmospheric Administration (NOAA) and published in the journal PLOS One, evaluated how more than 80 species will respond to their rapidly warming environment in the waters off the coast of the Northeastern United States. Species that can consume a wide variety of prey and survive in many different habitats tended to be less vulnerable to warming than their counterparts confined to one area and to a few sources of sustenance.

Some species, like anchovies, black sea bass and Spanish mackerel, may even benefit from climate change. But species whose populations will be negatively affected—including mussels, shrimp and pollock—far out number those whose standing will improve, according to the study. Others will be left largely unaffected. The results show 17% of the 82 species examined will benefit from climate change, while 83% will either be hurt or not affected by warming.

The research, which evaluated waters from North Carolina to Maine, is the first of several planned by NOAA to assess how vulnerable fish in the U.S. are to climate change. The results provide little indication about when the fish populations will begin to feel the pressure of climate change.

Read the full story at Time

 

Why the U.S. East Coast could be a major ‘hotspot’ for rising seas

February 1, 2016 — New research published Monday adds to a body of evidence suggesting that a warming climate may have particularly marked effects for some citizens of the country most responsible for global warming in the first place — namely, U.S. East Coasters.

Writing in Nature Geoscience, John Krasting and three colleagues from the Geophysical Fluid Dynamics Laboratory of the National Oceanic and Atmospheric Administration find that “Atlantic coastal areas may be particularly vulnerable to near-future sea-level rise from present-day high greenhouse gas emission rates.” The research adds to recent studies that have found strong warming of ocean waters in the U.S. Gulf of Maine, a phenomenon that is not only upending fisheries but could be worsening the risk of extreme weather in storms like Winter Storm Jonas.

“When carbon emission rates are at present day levels and higher, we see greater basin average sea level rise in the Atlantic relative to the Pacific,” says Krasting. “This also means that single global average measures of sea level rise become less representative of the regional scale changes that we show in the study.”

In the new research, the scientists used a high powered climate change model based at the Geophysical Fluid Dynamics Laboratory in Princeton, N.J., that simulates the ocean, the atmosphere and the cycling of carbon throughout the Earth system. The goal was to determine how much sea level rise would occur in the Atlantic, versus the Pacific, under a variety of global carbon emissions scenarios.

Read the full story at The Washington Post

 

MASSACHUSETTS: Climate change causes 4 degree rise in Buzzards Bay

January 22, 2016 — Climate change has caused a four-degree rise in water temperature and a decline in water quality over the past two decades in Buzzards Bay, according to a study by the Woods Hole Oceanographic Institution and the Buzzards Bay Coalition.

“We have seen a widespread and rapid increase in water temperature from 1992 to 2013 and this agrees with other regional studies so we are fairly confident that this is related to climate change,” said Jenny Rheuban, a research associate at WHOI and lead author of the study.

The study — which involved data collected by more than 1,000 trained citizen scientists involved with the coalition over 22 years — also revealed an increase in algae growth, a cause of poor water quality.

“Algae like phytoplankton are the reason that when you go to the beach the water is murkier and not as clear as you’d like,” said Rachel Jakuba, science director for the Buzzards Bay Coalition and co-author of the study.

The levels of chlorophyll, an indicator of phytoplankton or algae, in the water nearly doubled, according to the study, despite the fact that nitrogen levels remained relatively constant.

Read the full story at New Bedford Standard- Times

 

Study: Gulf of Maine warming faster than thought

January 19, 2016 — The news just keeps getting worse for cold-temperature fish such as cod in the ever-warming waters of the Gulf of Maine.

A new study, conducted by National Oceanic and Atmospheric Administration researchers and appearing in the Journal of Geophysical Research — Oceans, reached an ominous conclusion: the waters of the Gulf of Maine, which a previous study showed to be warming faster than 99.9 percent of the rest of the planet’s oceans, are continuing to warm at an accelerated rate and are expected to continue doing so for at least the next 80 years.

“The Gulf of Maine is really being subjected to a one-two punch,” said Vincent Saba, a NOAA Fisheries scientist and lead author of the study. “On one hand, the region is dealing with the elements of global warming being experienced in all of the oceans, but there also has been a change in the circulation of the two gulf streams that feed into the Gulf of Maine.”

The result, according to Saba, is that more of the warmer water contained in the shifting Gulf Stream is making its way into the Gulf of Maine from the south, while less of the colder water from the Arctic and Labrador streams are entering the gulf from the north and east.

“The Gulf of Maine really sits at the intersection of those two currents,” Saba said.

Saba said the climatic models used in the study project the warming trend could continue for the next 80 years, potentially rising another 4 to 7 degrees Fahrenheit and setting the stage for extreme and potentially ruinous changes in the region’s ecosystem.

Read the full story at The Salem News

More plastic than fish in oceans by 2050

January 19, 2016 — The world is flooded with plastic garbage.

There will be more plastic than fish in terms of weight in the world’s oceans by 2050, the World Economic Forum warned Tuesday.

Plastic has become one of the world’s most popular materials, combining amazing functionality and very low production costs. Its use has increased 20-fold in the past 50 years and is expected to double again in the next 20 years.

Almost everybody in the world comes into contact with it — over a quarter of all plastic is used for packaging, the most popular use of the material.

But only 14% of plastic packaging is collected for recycling. The reuse rate is terrible compared to other materials — 58% of paper and up to 90% of iron and steel gets recycled.

It gets worse. Almost a third of all plastic packaging escapes collection systems and ends up in nature or clogging up infrastructure.

Read the full story at CNN Money at KCRA