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Scientists freeze Great Barrier Reef coral

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SYDNEY: Scientists working on Australia’s Great Barrier Reef have successfully trialled a new method for freezing and storing coral larvae they say could eventually help rewild reefs threatened by climate change.


Scientists are scrambling to protect coral reefs as rising ocean temperatures destabilise delicate ecosystems. The Great Barrier Reef has suffered four bleaching events in the last seven years including the first ever bleach during a La Nina phenomenon, which typically brings cooler temperatures.


Cryogenically frozen coral can be stored and later reintroduced to the wild but the current process requires sophisticated equipment including lasers. Scientists say a new lightweight “cryomesh” can be manufactured cheaply and better preserves coral. In a December lab trial, the world’s first with Great Barrier Reef coral, scientists used the cryomesh to freeze coral larvae at the Australian Institute of Marine Sciences (AIMS). The coral had been collected from the reef for the trial, which coincided with the brief annual spawning window.


“If we can secure the biodiversity of coral ... then we’ll have tools for the future to really help restore the reefs and this technology for coral reefs in the future is a real game-changer,” Mary Hagedorn, Senior Research Scientist at Smithsonian National Zoo and Conservation Biology Institute told Reuters from the AIMS lab.


The cryomesh was previously trialled on smaller and larger varities of Hawaiian corals.


— Reuters


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