Saving Seafood

Lecturers talk global conservation efforts, decline of fisheries

October 31, 2015 — Artist James Prosek uses fish as inspiration for his work.

Prosek, who has also written 13 books, told stories at a Saturday lecture at SUNY-ESF of when he was 9 years old and trespassing rivers to fish. Though his youth involved catching and releasing 30 fish to take a picture, Prosek said he now prefers to catch one and eat it.

About 100 people attended the most recent installment of the SUNY-ESF Dale L. Travis Public Lecture Series, which focused on the future of fisheries. The lecture, entitled “The Future of Fisheries: Choices, Decisions, and the Role of the Arts,” featured five speakers: Karin Limburg, John Waldman, Prosek, David Doubilet and Jennifer Hayes.

During the lecture, Swedish folk music played in the background.

The music tied into Limburg’s discussion about fish hook experiments in Gotland, Sweden. Limburg was the first of five speakers during the lecture, which took place in Marshall Hall on the State University of New York College of Environmental Science and Forestry campus.

The talk opened with a traditional  reading and translation by a Haudenosaunee representative. The excerpt concluded with, “Now our minds are one.”

In addition to discussing her fish hook experiments, Limburg spoke in depth about her study of otoliths, which are chronometers in the ear of a fish that show its precise age and chemical makeup.

Read the full story at The Daily Orange

 

Climate change hurting New England cod population, study says

October 29, 2015 — The rapid warming of the waters off New England has contributed to the historic collapse of the region’s cod population and has hampered its ability to rebound, according to a study that for the first time links climate change to the iconic species’ plummeting numbers.

Between 2004 and 2013, the mean surface temperature of the Gulf of Maine — extending from Cape Cod to Cape Sable in Nova Scotia — rose a remarkable 4 degrees, which the researchers attributed to shifts in the ocean currents caused by global warming.

The study, which was released Thursday by the journal Science, offers the latest evidence of climate change — this time, affecting a species once so plentiful that fishermen used to joke that they could walk across the Atlantic on the backs of cod.

Fisheries management officials have sharply limited cod fishing in hopes of protecting the species, but they estimate the number of cod remain at as little as 3 percent of what would sustain a healthy population. The limits, in turn, have hurt fishermen.

“Managers [of the fishery] kept reducing quotas, but the cod population kept declining,” said Andrew Pershing, the study’s lead author and chief scientific officer of the Gulf of Maine Research Institute in Portland. “It turns out that warming waters were making the Gulf of Maine less hospitable for cod, and the management response was too slow to keep up with the changes.”

The institute had reported last year that the rise in temperatures in the Gulf of Maine exceeded those found in 99 percent of the world’s other large bodies of saltwater. The authors of Thursday’s study link the rapid warming to a northward shift in the Gulf Stream and changes to other major currents in the Atlantic and Pacific oceans.

They say the warmer water coursing into the Gulf of Maine has reduced the number of new cod and led to fewer fish surviving into adulthood. Cod prefer cold water, which is why they have thrived for centuries off New England.

The precise causes for the reduced spawning are unclear, the researchers said, but they’re likely to include a decline in the availability of food for young cod, increased stress, and more hospitable conditions for predators. Cod larvae are View Story eaten by many species, including dogfish and herring; larger cod are preyed upon by seals, whose numbers have increased markedly in the region.

Read the full story at the Boston Globe

Small, Fast-Growing Fish Like Sardines More Affected By Population Collapses

August 5, 2015 — NEW JERSEY –Ocean species that grow quickly and reproduce more frequently are more vulnerable to dramatic population falls than larger, slower-growing fish, according to a new study Wednesday. The researcher said the findings are counterintuitive, because the opposite dynamic holds true on land.

A scientist from Rutgers University in New Jersey found that faster-breeding fish like sardines, anchovies and flounder, actually experience dramatic population falls more often than larger fish like sharks or tuna.

“Rabbits are doing pretty well compared to rhinos,” Malin Pinsky, author of the research, said in a press release. “Mice thrive while lions, tigers and elephants are endangered.”

Pinsky studied population changes in 154 species of fish over 60 years, and was surprised to find that small fish with large populations were collapsing more often — not seriously enough to face extinction, but enough to possibly disrupt marine ecosystems. He suggested that the difference in population volatility could be explained by overfishing and climate change. The results of his research were published in the journal Proceedings of the Royal Society B.

Read the full story at the International Business Times