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The race to build climate-resilient coral reefs

www.bbc.com The race to build climate-resilient coral reefs

These innovations are speeding up the recovery of bleached corals.

The race to build climate-resilient coral reefs

Novel restoration methods can speed up the recovery of threatened corals – but for a lasting impact, they need to be backed by action to stop ocean warming, reports Chris Iovenko.

A new ally may help speed up the race to restore devastated coral reefs in Australia: robots, combined with mass-manufacturing techniques. Around the world, scientists are also working on other methods to help reefs recover faster and on a larger scale than before. But as corals face existential threats, including a steady increase in the intensity and duration of marine heat waves, experts warn that these solutions need to go hand in hand with action on global warming if they are to bring lasting improvements.

Taryn Foster is a coral scientist based in Western Australia and chief executive of Coral Maker, which produces small coral skeletons onto which nursery grown coral is attached. She was spurred into action by the mass bleaching she witnessed while doing research for her doctoral thesis on climate impacts on coral reefs.

"I was studying these big reefs and saw how quickly a bleaching event devastates a reef system," says Foster. "In the space of a few weeks during one of the bleaching events, we saw around 90% coral mortality. And I was reconsidering whether or not I wanted to continue to write scientific research papers, or whether I wanted to get more involved in practical, more solutions-based work."

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