In the past decade, the oyster population in New Hampshire’s Great Bay estuary has plummeted by 90 percent, due to the 1995 arrival of the oyster disease MSX. The previous century saw a slower but equally devastating demise of oysters from exuberant overharvesting. “We have seen local extinction on some reefs,” says Ray Grizzle, research associate professor at the University of New Hampshire’s Jackson Estuarine Laboratory.
Now Grizzle is working to bring oysters back to Great Bay – lots of them. He’s helping the state of New Hampshire meet its established goal of restoring 20 acres of oyster reefs by 2010. “I hope we’re going to have a bay with a healthy oyster population, and we’re going to work hard to do it,” he says. His research explores which are the best reef restoration techniques for the Great Bay estuarine system (www.oysters.unh.edu).
Oyster reef restoration involves providing sufficient hard substrate – typically oyster shells on which young oysters settle and grow – and seeding it with disease-resistant young oysters. Natural oyster reefs are formed by live oysters atop mounds of empty shells; one initiative of Grizzle’s lab is soliciting “recycled” empty shells from oyster harvesters that will eventually be returned to the bay to provide substrate.
Beth Potier | EurekAlert!
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On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
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Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
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Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
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