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How Mississippi spent millions that failed to save its oyster reefs  科技资讯
时间:2023-03-22   来源:[美国] Daily Climate

A lot has gone wrong for oysters here, where the region’s blend of saltwater and freshwater has historically nurtured them. Brutal storms and federal flood-management protocols that send freshwater flowing into oyster habitats have both taken their toll, and have escalated as a result of climate change.

But new reporting from ProPublica and the Sun Herald shows that the state has also failed to stem the crisis, investing millions of dollars to rebuild reefs in ways that did not respond to changing conditions. Some of that money came from funds the state received as a result of the BP oil spill.

“They’re just wasting money,” said Keath Ladner, a former oyster fisherman whose family was in the seafood business for three generations. “And the fishermen know this.”

For decades, the state has focused on rebuilding reefs, restoring them with shell or rock to give baby oysters a place to settle and grow. Since Hurricane Katrina damaged or destroyed more than 90% of state reefs in 2005, two state agencies have spent $55 million to restore Mississippi Sound oysters, which are critical to the estuary’s health.

Mississippi maintains the majority of the state’s reefs, opening them to licensed fishermen for harvest. But reefs maintained by the state have shrunk: The state estimates that the Mississippi Sound historically had about 12,000 acres of oyster reefs, compared to 8,112 acres today. There hasn’t been a harvest on Mississippi’s public reefs since 2018. Fishermen have left the industry in droves.

Oyster boats once lined the docks in Hancock County but are scarce these days.

Locals in the fishing industry say the state has failed to do routine maintenance, which includes planting rocks or shells on solid ground and later turning or raking them to knock off silt so baby oysters can settle there.

Joe Spraggins, executive director of the Mississippi Department of Marine Resources, which regulates and oversees the state’s oysters, said his agency does not have enough money and personnel to maintain oyster reefs in today’s climate.

Spraggins himself acknowledged the high costs and poor outcomes. “I could probably go buy 100,000 sacks of oysters in Texas every year and give them to y’all to sell and come out cheaper,” he told oystermen at a meeting in the fall of 2021. He thinks private operators could expand oyster reefs beyond the acres that the Marine Resources Department plants with rock and tries to maintain.

That’s the conclusion of state Sen. Mike Thompson, an attorney who piloted offshore boats when he was younger. In his opinion, it’s time to give “the fishermen who know and understand the fishery the opportunity to restore the reefs.” He recently introduced legislation that would expand private leasing of oyster grounds.

The sense of urgency about saving the oysters stems from more than falling seafood sales. Oyster reefs are critical for the health of the Mississippi Sound and other estuaries. They serve as nurseries, refuge and foraging grounds for many aquatic animals, including fish, shrimp and crabs. They protect the shoreline from erosion in storms. And oysters filter and clean the water as they feed, with one oyster capable of filtering up to 50 gallons a day.

“That is a keystone species for any estuary, and that’s exactly what we have here in the Mississippi Sound,” said Erik Broussard, deputy director of marine fisheries for the Marine Resources Department. “So it’s extremely important for everything that inhabits the Mississippi Sound to have a healthy shellfish population.”

A global analysis published in 2009 concluded that “oyster reefs are one of, and likely the most, imperiled marine habitat on earth. The oyster fisheries of the Gulf of Mexico need to be managed for what they represent: likely the last opportunity in the world to achieve both large-scale reef conservation and sustainable fisheries.”

     原文来源:https://www.propublica.org/article/mississippi-spent-millions-failed-to-save-oyster-reefs

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