Heatwaves killing coral reefs far faster than previously believed: Study

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SYDNEY: Marine heatwaves are killing coral reefs far more quickly than previously believed, according to a new study released on Friday (Aug 9). ...

Repeated"bleaching events", such as ones which hit Australia's Great Barrier Reef in 2016 and 2017, can eventually kill the coral in a process which takes months or years.But the new study found that severe marine heatwaves can actually degrade the skeletal structure of the coral, potentially killing the organisms in a matter of days or weeks.

The study, which also involved researchers from the University of Newcastle in Britain, Australia's James Cook University, the University of Technology Sydney and the US National Oceanic and Atmospheric Administration, used CT scans of coral reefs to monitor the impact of extreme temperatures. "Climate scientists talk about 'unknown unknowns' - impacts that we haven't anticipated from existing knowledge and experience," he said.

 

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