Saving Seafood

REP. CHELLIE PINGREE: Maine’s oceans affected by climate change

December 27, 2019 — The United Nation’s (UN) 25th annual Conference of the Parties (COP25) — a meeting of nearly 200 countries to discuss international action on climate change — took place in Madrid earlier this month. Around 25,000 people attended and focused, among other topics, their efforts on the role of oceans in the climate crisis.

Our oceans, including the Gulf of Maine, are already feeling the effects of climate change. Ocean acidification and sea level rise threaten Maine’s coastal communities and economy. A recent report by the High Level Panel for a Sustainable Ocean Economy shows that, without action on climate change, we could see a major decline in fish and irreversible harm to our coral reefs. And September’s U.N.’s Intergovernmental Panel on Climate Change report showed that the climate crisis could lead to sea level rise of more than three feet by the end of the century, coastal homes and islands becoming uninhabitable, and a collapse in fisheries.

Despite these threats, there is reason for hope. Oceans make up two-thirds of Earth’s surface and have the potential to absorb and store more carbon dioxide than land. Increasing the amounts of this “blue carbon” that we capture could help address the climate crisis. Waves, tides, and offshore wind could all also be harnessed to generate “blue” electricity and power our homes and businesses.

As countries around the world are working to develop ambitious policies to reduce greenhouse gas emissions, the health of our oceans is taking center stage. Chile, which is leading the work of COP25, is launching a platform of ocean solutions, like creating marine protected areas, promoting sustainable fisheries, enhancing recycling capabilities, and banning single-use plastics.

Read the full opinion piece at the Portland Press Herald

Study shows impact of climate change on fishing economy

December 26, 2019 — With the Gulf of Maine warming faster than 99% of the world’s oceans, it makes sense there would be impacts on fish stocks and the fishermen who depend on them for a living.

While several studies have demonstrated that marine inhabitants are on the move trying to find cooler water, the data on how climate change is affecting fishermen has been hard to come by. Other factors — cuts to fish quotas, the closing of more areas to fishing, and gear changes to rebuild fish stocks or protect endangered species such as the right whale — also could affect the fishing industry and disguise the impact of ocean warming.

But a new study by Kimberly Oremus, a researcher at the University of Delaware, used existing data to show that fishing jobs in New England’s coastal counties declined by an average of 16% between 1996 and 2017 due to climate variation.

Oremus focused her research on what is known as North Atlantic Oscillation (NAO), the relative pressure differential between massive oceanic high pressure and low pressure systems in winter.

When the subtropical high pressure off the Azores is stronger than usual, there is a greater pressure differential with a low over Iceland. That means stronger winter storms crossing the Atlantic to Europe, and mild, wet winters in the eastern United States.

Read the full story at the Cape Cod Times

New study looks at impact of ocean acidification on sea scallops

December 23, 2019 — Shannon Meseck, a research chemist with the National Oceanic and Atmospheric Administration, stood in a T-shirt, jeans and fishing boots as winter sunlight streamed in through the greenhouse windows of the Massachusetts Maritime Academy aquaculture lab. A couple of steps beyond the windows, the Cape Cod Canal raced by, a flat gray sheet of swirls and eddies.

Eight weeks of vital research on ocean acidification were drawing to a close, and Meseck was relieved and pleased. She’d already completed similar research on oysters and surf clams, but analyzing Atlantic sea scallops, the region’s preeminent fishery, was a tougher task.

The seawater at NOAA’s Northeast Fisheries Science Center’s lab in Milford, Connecticut, was too warm for scallops, and filters on the water pumped into the lab stripped out the plankton and algae the scallops feed on. Milford Laboratory director Gary Wikfors, who had done some consulting with the academy when it set up its aquaculture lab years earlier, contacted the academy about a partnership. The research is being funded by a three-year NOAA grant of $172,000 annually.

Read the full story at the Cape Cod Times

Ocean Acidification Could Mean Smaller Scallops, Threatened Industry

December 19, 2019 — In a new experiment, scientists working at the Mass Maritime Academy in Bourne are finding that ocean acidification may have a profound effect on juvenile sea scallops.

Scientists at the Academy, in partnership with the National Oceanic and Atmospheric Administration (NOAA), are exposing sea scallops to three different levels of acidity, to see how they adapt to changing ocean chemistry.

Over the last 25 years, oceans have become increasingly acidic and that trend is expected to continue, as the water absorbs greenhouse gases produced by human activity.

“Research has shown that other bivalves [like oysters, clams, and quahogs] are affected by ocean acidification,” said Shannon Meseck, a research scientist at the NOAA Fisheries Millford Laboratory. “But to date, there’s no published research on the sea scallop, which is surprising because it is the second most important fishery in the Northeast. Second, to lobster.”

When Meseck started working toward her PhD more than two decades ago, she said, she learned the pH of the ocean—which measures its acidity—was 8.15. Today, the pH has dropped to 8.1, and in the next 100 years it could be as low as 7.8.

Read the full story at WCAI

100 years of tiny seashells reveal alarming trend threatening West Coast seafood

December 17, 2019 — Roughly 100 years worth of tiny shells resting on the Southern California seafloor have revealed an alarming trend that could spell trouble for the West Coast seafood industry, a new study says.

The research, published Monday in the journal Nature Geoscience, suggests that the Pacific Ocean along California is acidifying twice as fast as the global average, scientists from the National Oceanic and Atmospheric Administration said in a news release on the findings.

Acidification is a serious threat for the seafood industry, researchers said, explaining that “California coastal waters contain some of our nation’s more economically valuable fisheries, including salmon, crabs and shellfish. Yet, these fisheries are also some of the most vulnerable to the potential harmful effects of ocean acidification on marine life.”

Researchers said the findings looked at “the progression of ocean acidification in the California Current Ecosystem through the twentieth century.” That ecosystem extends from southern British Columbia in Canada to Baja California in Mexico, encompassing the Washington and Oregon coasts, according to NOAA.

Read the full story at The Sacramento Bee

Waters Off California Acidifying Faster Than Rest of Oceans, Study Shows

December 17, 2019 — California’s coastal waters are acidifying twice as fast as the rest of the oceans, a study published Monday shows. And some of California’s most important seafood — including the spiny lobster, the market squid and the Dungeness crab — are becoming increasingly vulnerable.

The carbon dioxide emissions that contribute to the planet’s rapidly warming climate are also changing the chemistry of the world’s oceans, which have absorbed roughly 27 percent of the carbon dioxide emitted worldwide.

Ocean water is ordinarily slightly basic, or alkaline, but is becoming more acidic as it absorbs carbon dioxide. This can harm marine life, especially shellfish, because they struggle to make their shells in acidic waters.

Emily Osborne, a scientist in the National Oceanic and Atmospheric Administration’s ocean acidification program, with her colleagues studied the fossil record of planktonic foraminifera — tiny simple organisms which, like shellfish, build their shells from calcium carbonate. They have been around for millions of years, but each individual organism only lives for roughly a month.

Read the full story at The New York Times

Climate change and overfishing are boosting toxic mercury levels in fish

November 11, 2019 — We live in an era—the Anthropocene—where humans and societies are reshaping and changing ecosystems. Pollution, human-made climate change and overfishing have all altered marine life and ocean food webs.

Increasing  temperatures are amplifying the accumulation of neurotoxic contaminants such as organic mercury (methylmercury) in some marine life. This especially affects top predators including marine mammals such as fish-eating killer whales that strongly rely on large fish as seafood for energy.

Now the combination of  pollution, climate change and overfishing are conspiring together to further contaminate marine life and food webs. This has obvious implications for ecosystems and the ocean, but also for public health. The risk of consuming mercury-contaminated fish and seafood is growing with climate change.

Read the full story at PHYS.org

Hundreds of scientists gather in Portland to address climate change in the Gulf of Maine

November 5, 2019 — Several hundred scientists, conservationists and government leaders from New England and the Canadian Maritimes are gathering in Portland to discuss the rapid ecological changes in the Gulf of Maine and how the region should respond.

The Gulf of Maine 2050 International Symposium will focus on the science of sea level rise, ocean acidification and warming ocean waters, as well as how those climate-related changes will affect the regional economy, environment and population over the next three decades.

“Preparing for 2050 is a major challenge, but it is one that we won’t face alone,” said Theresa Torrent of the Maine Department of Marine Resources Maine Coastal Program and the state’s coordinator on the international Gulf of Maine Council on the Marine Environment. “The purpose of Gulf of Maine 2050 is to activate the talents of people around the Gulf of Maine and build a safe and productive future.”

The conference – hosted by the Gulf of Maine Council, the Portland-based Gulf of Maine Research Institute and the Huntsman Marine Science Centre in St. Andrews, New Brunswick – comes at a time when New England’s waters and forests are already experiencing dramatic changes.

Read the full story at The Portland Press Herald

Sens. Ed Markey and Dan Sullivan introduce bipartisan bill to boost ocean health

October 28, 2019 — Democratic Sen. Ed Markey of Massachusetts and Republican Sen. Dan Sullivan of Alaska on Friday introduced the Ocean, Coastal and Estuarine Acidification Necessitates (OCEAN) Research Act, which boosts investment in research that could improve ocean health and protect the seafood industry.

The senators said in a news release Friday that the bill would lead to greater research and monitoring of ocean acidification, which occurs as a consequence of carbon dioxide forming acids when dissolved in seawater. The process harms shellfish, coral reefs and other marine life essential for healthy ecosystems and coastal economies.

In coastal areas, acidification may interact with warming waters, harmful algal blooms and low-oxygen “dead zones” with severe impacts. Southern Massachusetts and Narragansett Bay have been identified as “acidification hotspots,” jeopardizing the $500 million-plus Massachusetts shellfish industry.

The bipartisan bill introduced Friday would reauthorize the Federal Ocean Acidification Research and Monitoring Act, which lapsed in 2012 and provided funding for the National Oceanic and Atmospheric Administration (NOAA) and the National Science Foundation. The bill calls for engaging with coastal communities and the seafood industry through an advisory board and research grants.

Read the full story at MassLive

Anchorage talk will dive into ocean acidification’s impact on Alaska marine life

October 16, 2019 — Hundreds of fishery stakeholders and scientists will gather in Anchorage next week as the state Board of Fisheries begins its annual meeting cycle with a two-day work session.

The seven-member board sets the rules for the state’s subsistence, commercial, sport and personal use fisheries. It meets four to six times each year in various communities on a three-year rotation; this year the focus is on Kodiak and Cook Inlet.

The fish board and the public also will learn the latest on how a changing climate and off-kilter ocean chemistry are affecting some of Alaska’s most popular seafood items at an Oct. 23 talk and Q&A on ocean acidification in Alaska.

They may also be surprised to learn that only two studies have looked at salmon response to ocean acidification, and both were conducted outside Alaska.

Most of the research to date has focused specifically on crab and fish stocks, said Bob Foy, director of the Alaska Fisheries Science Center at the NOAA Auke Bay lab in Juneau who will lead the Anchorage presentation.

Read the full story at the Anchorage Daily News