Historic coral collapse on Great Barrier Reef

Australian marine scientists have unearthed evidence of an historic coral collapse in Queensland's Palm Islands following development on the nearby mainland. Cores taken through the coral reef at Pelorus Island confirm a healthy community of branching Acropora corals flourished for centuries before European settlement of the area, despite frequent floods and cyclone events. Then, between 1920 and 1955, the branching Acropora failed to recover.

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