Damaged coral reefs can recover quickly after restoration work

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Four years after being restored with steel frames, coral reefs in Indonesia damaged by blast fishing grow at the same rate as healthy reefs, but they have lower levels of species diversity

Just off the south coast of Sulawesi, Indonesia, reefs were severely damaged about 30 years ago by dynamite fishing, where explosives are dropped into water to kill or stun large numbers of fish.at Lancaster University in the UK. “It leaves behind lots of loose fragments of old, dead coral skeletons, which washes around and doesn’t allow for coral to naturally settle on it and grow.

“Four years after the restoration process started, reefs had an equivalent growth rate of healthy reefs,” says Lamont. “That’s surprisingly quick.” Local communities attach coral fragments to steel frames as part of the restoration programme in Indonesia“The difference in community might lead to differences in resilience to future stress events, especially heat stress, as branching corals are generally more sensitive to bleaching,” says team memberat the University of Exeter, UK. “We expect to see natural recruitment and recovery of more massive and encrusting corals to restored areas over longer time scales.

 

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