overfishing Archives - Page 2 of 15

New study: Chesapeake oyster decline not due to overfishing

November 14, 2018 — Warmer winters, rather than overharvesting, caused the steep decline of oysters and other commercially valuable shellfish in the Chesapeake Bay and elsewhere along the Atlantic coast, according to a controversial new study that’s getting pushback from some scientists.

The study, which appeared in Marine Fisheries Review, a quarterly journal of the National Oceanic and Atmospheric Administration, says that multi-year stretches of mild temperatures in normally weather months altered the food web in coastal waters. That impaired the growth and reproduction of oysters, quahogs, soft-shell clams and scallops, scientists said. It also led to increased predation on shellfish larvae and outbreaks of diseases.

“The temperatures got warm and that changed the whole environment, so [the oyster diseases] MSX and Dermo could flourish,” said Clyde MacKenzie, Jr., the study’s lead author and a longtime researcher at NOAA’s Northeast Fisheries Science Center at Sandy Hook, NJ. Mitchell Tarnowski, who runs the annual fall oyster survey for Maryland’s Department of Natural Resources, is the co-author.

The paper’s conclusions, especially its dismissal of overfishing as a factor in Chesapeake oyster declines, came under fire from scientists with the University of Maryland Center for Environmental Science and Chesapeake Bay Foundation. Its publication comes as the DNR prepares to release a first-ever stock assessment of the oyster population in the Upper Chesapeake, including an evaluation of whether current harvest levels are sustainable.

The scientific consensus has long been that overharvesting, disease and habitat loss over the decades devastated the Bay’s oyster population, with some estimates putting it in recent years at 1 percent or less of historic levels of abundance. From an annual commercial harvest of nearly 17 million bushels in 1880, landings have trended downward, hitting historic lows in 2003-04 of just 50,000 bushels. The harvest has rebounded some since then, though much of the gain has come via private oyster farming, especially in Virginia.

Read the full story at the Bay Journal

Warm temps hurt shellfish, aid predators

November 13, 2018 — Valuable species of shellfish have become harder to find on the East Coast because of degraded habitat caused by a warming environment, according to a pair of scientists that sought to find out whether environmental factors or overfishing was the source of the decline.

The scientists reached the conclusion in studying the decline in the harvest of four commercially important species of shellfish in coastal areas from Maine to North Carolina – eastern oysters, northern quahogs, softshell clams and northern bay scallops. They reported that their findings came down squarely on the side of a warming ocean environment and a changing climate, and not excessive harvest by fishermen.

One of the ways warming has negatively impacted shellfish is by making them more susceptible to predators, said the lead author of the study, Clyde MacKenzie, a shellfish researcher for the National Oceanic and Atmospheric Administration who is based in Sandy Hook, New Jersey.

“Their predation rate is faster in the warmer waters. They begin to prey earlier, and they prey longer into the fall,” MacKenzie said. “These stocks have gone down.”

MacKenzie’s findings, the product of a collaboration with Mitchell Tarnowski, a shellfish biologist with the Maryland Department of Natural Resources, appeared recently in the journal Marine Fisheries Review. The findings have implications for consumers of shellfish, because a declining domestic harvest means the prices of shellfish such as oysters and clams could rise, or the U.S. could become more dependent on foreign sources.

Read the full story from the Associated Press at The Express

Maine program aims to help recovery of endangered Atlantic salmon

It will be funded by fees on infrastructure projects paid in lieu of required environmental mitigation efforts.

October 29, 2018 — AUGUSTA, Maine — Maine is launching a new program to help pay for conservation work that benefits Atlantic salmon. The money will come from fees for road and bridge projects.

Salmon were once abundant in the rivers of New England, but they are now listed as endangered under the Endangered Species Act after years of habitat loss and overfishing. The Atlantic Salmon Restoration and Conservation Program can help support the fish’s recovery, the Maine Department of Marine Resources said.

The program will allow public and private organizations working on road and bridge projects to pay a fee in lieu of environmental mitigation efforts that are required by law, the department said. Sean Ledwin, director of the sea-run fisheries division at the marine department, said the money will be used to “restore and enhance salmon habitat in Maine.”

Read the full story from the Associated Press at the Portland Press Herald

The Cultural and Historical Importance of Atlantic Salmon in New England

October 29, 2018 — For thousands of years, Atlantic salmon – known as the King of Fish – ran almost every river northeast of the Hudson. And for decades, the first fish caught in Maine’s Penobscot River was actually presented to the president of the United States in a “first fish” ritual.

But overfishing and dams brought populations to their knees and the commercial fishery for Atlantic salmon closed seventy years ago in 1948. For most of us, the closest we’ve ever gotten to an Atlantic salmon is the farm-raised variety in the fish market.

But, the National Oceanic and Atmospheric Administration is celebrating the international year of the salmon, and the New England Aquarium is marking the occasion with a public lecture by Catherine Schmitt, author of The President’s Salmon: Restoring the King of Fish and its Home Waters; and Madonna Soctomah, former Passamaquoddy Tribal Representative with the Maine State Legislature and St. Croix International Waterway Commissioner. That’s the St. Croix River in Maine and New Brunswick, not the Caribbean island.

The Presidential “first fish” ritual started in 1912 with angler Carl Anderson. He decided that he wanted to give his fish – which was the first fish caught on opening day April 1st – to the president of the United States.

Read and listen to the full story at WCAI

NGOs condemn EU Parliament’s decision to ‘overfish Atlantic waters’

October 29, 2018 — The European Parliament has voted to approve the multiannual plan for management of north-east Atlantic waters, despite the plan’s allowance for unsustainable fishing, said Oceana, ClientEarth and Seas at Risk.

The Western Waters, an area that stretches from Portugal to France, Ireland and the UK, is a heavily-used fishery for cod, haddock, plaice, sole and Norway lobster. In 2017, the area yielded 368,000 metric tons of produce, with a combined first sale value of roughly €1.4 billion.

However, current estimates suggest that as much as 41% of the region’s stocks are overfished. Environmental NGOs have been putting pressure on the EU Parliament to reduce catch quotas in the region as part of the 2013 commitment in the common fisheries policy (CFP) to end overfishing in European waters by 2020 at the latest.

The latest vote has agreed to allow fishing at levels above the scientifically-advised maximum sustainable yield, a move that many NGOs have condemned as being adverse to the objectives laid out in the CFP.

“The Parliament has agreed fishing mortality ranges that, at their upper limit, can exceed the fishing rates above scientifically advised sustainable levels,” said Andrea Ripol, fisheries policy offer at Seas At Risk. “This means that stocks will not be restored to healthy levels, bringing negative socioeconomic impacts in the longer term.”

Read the full story at Undercurrent News

TIM BRADNER: Science-based management the key to Alaska’s successful fisheries

October 12, 2018 — One of Alaska’s great success stories is the resurrection of our salmon fisheries after a virtual collapse that occurred under federal management in the years before statehood.

When Alaska became a state in 1959, the fledgling state government immediately instituted science-based fisheries management using sustained yield principles. Improved management helped, but coastal communities and the state economy lagged as the slow recovery process took place. When salmon runs had failed to recover by the early 1970s, the Legislature took two actions. First, it enacted a limited-entry program to control overfishing. Second, in partnership with the Alaska Department of Fish and Game, it created the framework for the state hatchery program.

The latter was part of a carefully developed plan to supplement wild stocks and offset wide swings in natural runs, particularly for pink salmon. Learning from the mistakes of the Lower 48, the program required hatcheries to be sited away from naturally occurring salmon stocks, required the use of only wild brood stock, and other steps to protect wild stocks. Stabilizing the salmon fisheries made it possible for harvesters to make a living, for processors to remain open, and for coastal communities to develop stable economies.

Nearly 50 years later, it is clear these initiatives have succeeded. Today, the state’s salmon enhancement program with its with science-based management by the Fish and Game department, have helped to grow statewide salmon harvests since those lean years before statehood. From a salmon harvest of 25 million in 1959, we now routinely have catches of more than 100 million, which support thousands of fishermen and fishery-dependent businesses across Alaska.

Despite this success, and the stability that the hatchery program has provided the state and coastal economies, hatcheries are now being criticized by some who argue hatchery-produced salmon are overloading the ocean capacity, resulting in less food for king and sockeye salmon. The Alaska Board of Fisheries now has proposals before it to reduce current hatchery production and will meet on the issue Oct. 16.

Read the full opinion piece at the Anchorage Daily News

Over 150 scientists warn of Mediterranean ‘overfishing crisis’

September 24, 2018 — More than 150 international scientists have signed NGO Oceana’s “Mediterranean Statement” urging the EU and its member states to end what it calls an environmental crisis in the Mediterranean, it said.

It cited a recent report from the United Nations Food and Agriculture Organization (FAO) calling it the world’s most overfished sea.

“This environmental crisis is not just a warning – it’s the harsh reality of the Mediterranean Sea. Europe has for decades turned a blind eye to this situation, and this passive stance has brought us today to almost the point of no return,” said Lasse Gustavsson, executive director of Oceana in Europe.

“The EU must curb overfishing to avoid the worst-case scenario — the collapse of fish stocks — by adopting a science-based management plan in the western Mediterranean,” he said.

Overfishing in the Mediterranean affects around 90% of evaluated fish stocks, with average exploitation rates exceeding more than double the recommended sustainable levels, said Oceana, citing the EU’s own Scientific, Technical and Economic Committee for Fisheries.

Read the full story at Undercurrent News

What is the Global Footprint of Fishing?

September 5, 2018 — Thanks to Global Fishing Watch, a new partnership between Oceana, SkyAtlas, and Google, scientists may be getting closer to figuring out how much of the world’s ocean is fished—but discrepancies in the scale of data are producing wildly different answers.

Global Fishing Watch launched in 2016 as a way to track fishing boats around the world. The core data comes from boats’ automatic identification system (AIS), a GPS system that pings out its location every 30 seconds to satellites. Most large boats around the world (not just fishing boats) are required to have AIS onboard for monitoring purposes and safety. Global Fishing Watch collects AIS data on all boats around the world to “determine the type of ship (e.g., cargo, tug, sail, fishing), its size, what kind of fishing gear (e.g. longline, purse seine, trawl) it’s using, and where and when it’s fishing based on its movement patterns.” It is an impressive way to collect fishing data and shows some promise for curbing illegal fishing. You can read more about it here.

One of the first major publications to come out of these AIS data attempted to map the ‘global footprint’ of fishing. It concluded that 55% of the global ocean was fished. However a recent paper, using the exact same data, concluded that only 4% of the global ocean is fished. An order of magnitude difference! What is going on here?

Read the full story at Sustainable Fisheries UW

MARYLAND: Maligned cownose ray could be vulnerable to overfishing, study suggests

August 30, 2018 — Chesapeake Bay watermen have long viewed the cownose ray as a pest, preying on a vulnerable oyster population. Their contempt even inspired tournaments of bow-wielding ray hunters — a practice the state has banned, at least temporarily.

But new research backs up concerns that the winged creatures could themselves be susceptible to overfishing, an outcome that some scientists fear could harm the bay’s health.

Scientists at the Smithsonian Environmental Research Center in Edgewater, Md., tracked a group of rays over two years. The rays, they found in research published last week in the journal Marine Ecology Progress Series, spend their winters around Cape Canaveral, Fla., then migrate north in the spring to the same rivers where researchers initially found them — perhaps the rivers and creeks where they were born.

The finding could be valuable as Maryland fishery regulators develop the state’s first plan to manage the cownose ray population, balancing the concerns of the seafood industry with the limited data available on the rays’ place in the Chesapeake ecosystem.

Read the full story at The Washington Post

Can dogfish save Cape Cod fisheries?

August 21, 2018 –Low clouds hang over the pier as fishing boats line up to drop off their catch for the day. Fishermen in orange suspendered waders and rugged boots perch on the edges of their boats. The fishermen, with weathered faces and hands toughened by their work, ignore the tourists gawking and snapping photos from a viewing platform overhead.

Then, the fog descends, giving the scene a sense of timelessness. But this scene has changed from decades past. For 400 years, fishermen across Cape Cod caught boatloads of, well, cod. The fish was so plentiful and valuable that fishermen bought houses and new boats off cod profits alone. But today, there’s a different fish filling the piers: spiny dogfish.

Cape Cod has nearly lost its namesake fish, due to overfishing and climate change. So fishermen have switched to dogfish, skates, and other more plentiful options. This move could help revive the Massachusetts fishing industry, and might even help the cod rebound, researchers say. But getting Americans to bite may not be as easy.

“This is the fish we could feed the United States with,” says Chatham fisherman Doug Feeney. “We have people that are hungry. We have prison systems. We have vets. We have homeless people. There’s just so much that can be done with this product.”

For a long time, fishermen saw dogfish as an annoyance. They were a “trash fish” with little value that often ended up clogging their nets. The large spines on their fins especially made them a pain to throw back, and they eat pretty much everything smaller than them – including juvenile codfish.

Read the full story at The Christian-Science Monitor