Saving Seafood

WHOI Led Research Team to Develop System to Predict Changes in Ocean Temps

October 30, 2017 — WOODS HOLE, Mass. — A research team led by the Woods Hole Oceanographic Institution has received a federal grant to develop a system to predict changes in ocean temperature.

The system will estimate seasonal and year-to-year temperature changes in the Northeast U.S. Shelf, which is seeing some of the highest ocean warming rates in the world and is home to a highly productive and commercially important marine ecosystem.

The Northeast Fisheries Science Center in Woods Hole and Stony Brook University are also part of the research team.

“Changes in ocean temperature hugely impacts the living organisms in coastal waters,” said Young-Oh Kwon, an associate scientist in WHOI’s Physical Oceanography Department and lead investigator of the new project.

Read the full story at CapeCod.com

Stony Brook University Wins NOAA Research Grant

August 8, 2017 — Stony Brook University has received a nearly $170,000 grant from the National Oceanic and Atmospheric Administration to support marine science and fisheries research. The money will be used to improve management of protected species of fish and marine mammals within what is called the Northeast United States Large Marine Ecosystem.

The grant will support the use of state-of-the-art climate models to develop tools to assist the commercial fishing industry in reducing bycatch of marine mammals and fish in long-line and midwater trawl fisheries, according to a statement by Lesley Thorne, a Stony Brook University assistant professor. This, Dr. Thorne said, will increase the efficiency and profitability of marine resources.

Read the full story at the East Hampton Star

Mercury Levels in Gulf of Maine Tuna on the Decline

December 5th, 2016 — There’s some good news for sushi lovers. A new report finds that over an 8-year period, mercury levels in Gulf of Maine tuna declined 2 percent a year — a decline that parallels reductions in mercury pollution from Midwest coal-fired power plants.

Two years ago, Dr. Nicholas Fisher, a professor of marine sciences at Stony Brook University in New York, had a bit of luck — he found out that a colleague had established a collection of 1,300 western Atlantic bluefin taken from the Gulf of Maine between 2004 and 2012.

“They were frozen, wasn’t the entire fish, just about a pound from each fish or so. And then my colleagues and I in New York dissected out muscle tissue from each sample and analyzed it to determine the mercury content of each fish,” he says.

And as they created a timeline for mercury content for each year, taking into account the age and size of each fish sampled, a clear picture emerged.

“There was a fairly steady decline for all ages of fish, and the decline rate was approximately 2 percent per year, which doesn’t sound all that dramatic, but over 10 years it’s about 20 percent. Over two decades its about 40 percent,” Fisher says.

Read the full story at Maine Public Radio 

Regulators Put Limits on Fish No One Wants to Eat

August 23, 2016 — Atlantic saury, pearlsides, sand lances—you’ve probably never tasted any of these fish (or heard of them). But they and other “forage” species play a vital role in our oceans—they’re food for the fish we eat. In fact, these lowly forage species are so essential to the health of marine ecosystems that some people are taking extra steps to protect them—especially as the global demand for seafood soars. Last week the Mid-Atlantic Fishery Management Council, which oversees fishing in U.S. waters from New York State to North Carolina, decided to start managing more than 50 species of forage fish.

The council’s decision is a bit unusual—after all, none of the forage fish populations are in danger of collapse, and only one of the 50-plus species is harvested on a large scale in the mid-Atlantic today. In the region, people have mostly ignored these fish because they tend to be small, low-value and not very appetizing. But the council is trying to handle its fisheries more holistically because it has realized that putting controls on a single species at a time just will not work. “There’s a move now to manage all fisheries as part of a bigger system,” says Steve Ross, a research professor at the University of North Carolina Wilmington who is one of the council’s scientific advisors. “When you manage one fish, you try to manage its whole environment—and that includes the food web.”

These small, nutrient-rich forage fish pump energy through the ecosystem in a way that no other marine animal can. They feed on the bottom of the food chain—on single-celled plankton, which larger fish cannot eat—and then they become prey for all sorts of upper-level predators like tuna, sea bass and halibut as well as seabirds and marine mammals. “I like to say that forage fish help turn sunlight into salmon,” explains Ellen Pikitch, a professor of marine biology at Stony Brook University. “They support so much of the ocean ecosystem.”

Read the full story at Scientific American

Study finds ship noise disrupting humpback whale feeding

August 12, 2016 — One of the biggest threats to humpback whales spending their summers in New England is being hit by a passing ship.

But a collision isn’t all they have to fear. A study published Wednesday found that low-frequency noise from passing freighters and cargo ships near the coast could be disrupting their ability to feed.

A team of researchers examining the foraging behavior of 10 whales in the Gulf of Maine found that some of these 40-ton cetaceans descended more slowly in the presence of ships, giving them less time to find the food they’d normally consume. The whales also conducted fewer side-roll maneuvers — a technique they use to feed on a type of fish known as a sand lance that’s found just above the sea floor.

“Overall, I was kind of surprised that we were able to detect any response statistically just because these humpback whales are very adaptable,” said Hannah Blair, a graduate student at Stony Brook University in New York who led the analysis on the data.

Whales, dolphins and other marine life depend heavily on sound to communicate with one another and to search for food. A growing body of evidence in recent decades suggests noise caused by humans, including ship noise, is wreaking havoc on marine life. It masks sounds produced by prey and alters the behavior of prey.

Findings like these prompted the National Oceanic and Atmospheric Administration in July to announce a project to address noise that impacts aquatic species and their habitat over the next 10 years. The goals include educating the public about the problem and “minimizing the acute, chronic and cumulative effects of noise on marine species and their habitat.”

The study offers the first evidence that noise could be harming the feeding behavior of humpback whales.

Read the full story from the Associated Press at the Gloucester Times

Flounder Are Vanishing

April 29, 2016 — With winter flounder said to be almost nonexistent, Anne McElroy of Stony Brook University’s School of Marine and Atmospheric Sciences asked the East Hampton Town Trustees at a meeting on Monday to endorse the collection of data this summer in Napeague Harbor to find out why.

Ms. McElroy said not only were recreational landings of adult winter flounder in New York’s inland waters almost nonexistent but mortality for juveniles appears higher in Long Island waters than elsewhere. The study being planned would be funded by the National Marine Fisheries Service and include a random survey of waterways from Napeague to Jamaica Bay. The goal, she said, is to incrementally rebuild the stocks.

Genetic studies in 2010 and 2011 had found that winter flounder in Long Island waters come from a very small parental stock, she said. As few as 1,200 fish contributed to the individuals at six study sites across the island, with fewer than 200 contributing in some bays. “This was very troubling. The more diversity in the gene pool, the more ability to respond to changes in the environment,” she said.

The Stony Brook team is to count and measure all winter flounder to estimate mortality and to take samples from up to 50 fish to assess responses to stress, among other factors affecting the fishery. A caging study in three areas of Shinnecock Bay will collect up to 450 additional fish in an effort to determine optimum locations for caged fish, an effort to shield juveniles from predators. Mortality rates in and outside the cages will be measured, along with dissolved oxygen, salinity, and temperature.

Read the full story at the East Hampton Star