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Warming R.I. marine waters force iconic species out, disrupt catch limits

August 9, 2021 — For generations, winter flounder was one of the most important fish in Rhode Island waters. Longtime recreational fisherman Rich Hittinger recalled taking his kids fishing in the 1980s, dropping anchor, letting their lines sink to the bottom, waiting about half an hour and then filling their fishing cooler with the oval-shaped, right-eyed flatfish.

Now, four decades later, once-abundant winter flounder is difficult to find. The harvesting or possession of the fish is prohibited in much of Narragansett Bay and in Point Judith and Potter ponds. Anglers must return the ones they accidentally catch to the sea.

Overfishing is easily blamed, and the industry certainly bears responsibility, as does consumer demand. But winter flounder’s local extinction isn’t simply the result of overfishing. Sure, it played a factor, but the reasons are complicated, from habitat loss, pollution and energy production — i.e., the former Brayton Point Power Station in Somerset, Mass., pre-cooling towers, when the since-shuttered facility took in about a billion gallons of water daily from Mount Hope Bay and discharged it at more than 90 degrees Fahrenheit.

Read the full story at The Westerly Sun

Rhode Island’s Warming Marine Waters Force Iconic Species Out, Disrupt Catch Limits and Change Ecosystem Services

August 2, 2021 — For generations, winter flounder was one of the most important fish in Rhode Island waters. Longtime recreational fisherman Rich Hittinger recalled taking his kids fishing in the 1980s, dropping anchor, letting their lines sink to the bottom, waiting about half an hour and then filling their fishing cooler with the oval-shaped, right-eyed flatfish.

Now, four decades later, once-abundant winter flounder is difficult to find. The harvesting or possession of the fish is prohibited in much of Narragansett Bay and in Point Judith and Potter ponds. Anglers must return the ones they accidentally catch to the sea.

Overfishing is easily blamed, and the industry certainly bears responsibility, as does consumer demand. But winter flounder’s local extinction isn’t simply the result of overfishing. Sure, it played a factor, but the reasons are complicated, from habitat loss, pollution and energy production — i.e., the former Brayton Point Power Station in Somerset, Mass., pre-cooling towers, when the since-shuttered facility took in about a billion gallons of water daily from Mount Hope Bay and discharged it at more than 90 degrees Fahrenheit.

The climate crisis, however, is likely playing the biggest role, at least at the moment, by shifting currents, creating less oxygenated waters and warming southern New England’s coastal waters. These impacts, which started decades ago, have and are transforming life in the Ocean State’s marine waters. The changes also impact ecosystem functioning and services. There’s no end in sight, as the type of fish and their abundance will continue to turn over as waters warm.

Rhode Island’s warming water temperatures are causing a biomass metamorphosis that is transforming the state’s commercial and recreational fishing industries, for both better and worse. The average water temperature in Narragansett Bay has increased by about 4 degrees Fahrenheit since the 1960s, according to data kept by the University of Rhode Island’s Graduate School of Oceanography.

Locally, iconic species are disappearing (winter flounder, cod and lobsters), southerly species are appearing more frequently (spot and ocean sunfish) and more unwanted guests are arriving (jellyfish that have an appetite for fish larvae and, in the summer, lionfish, a venomous and fast-reproducing fish with a voracious appetite).

Read the full story at EcoRI

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