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Biodiversity: Great Barrier reef has lost half its coral cover

Outbreaks of the coral eating crown of thorns starfish have been responsible for 42 percent of the over 50 percent decline in coral cover on the Great Barrier Reef between 1985 and 2012. Photo courtesy Katharina Fabricius, Australian Institute of Marine Science.

Multiple short-interval disturbances causing long-term decline, with southern areas hit hardest

By Summit Voice

SUMMIT COUNTY — Australian researchers say the Great Barrier Reef has lost half its coral cover in the past 27 years, with more impacts expected as the climate warms in coming decades. About half (46 percent) of the loss was from storm damage, with another 42 percent attributed to crown of thorns starfish and 10 percent lost to bleaching.

“We can’t stop the storms but, perhaps we can stop the starfish. If we can, then the reef will have more opportunity to adapt to the challenges of rising sea temperatures and ocean acidification, says John Gunn, CEO of the Australian Institute of Marine Science in Townsville. Continue reading

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