Claims Of Dramatic Great Barrier Reef Loss Are False
Claims that Australia’s Great Barrier Reef has lost half of its coral cover between 1995 and 2017 have received global media coverage. The stories were based on a new paper co-authored by controversial Australian researcher, Professor Terry Hughes of James Cook University.
But according to Professor Peter Ridd, a leading authority on the Great Barrier Reef, these claims are false.
According to Professor Ridd, the best data on the coral cover is taken by the Australian Institute of Marine Science (AIMS), who have been measuring over 100 reefs every year since 1986:
“AIMS data shows that coral cover fluctuates dramatically with time but there is roughly the same amount of coral today as in 1995. There was a huge reduction in coral cover in 2011 which was caused by two major cyclones that halved coral cover. Cyclones have always been the major cause of temporary coral loss on the Reef.”
Coral cover of the Great Barrier Reef 1986-2019; AIMS/Peter Ridd 2020
This is not the first time that Professor Hughes has made such claims about coral loss. His previous study was strongly criticized by the AIMS scientists responsible for collecting and publishing the coral data.
Moreover, Professor Hughes has refused to make public the raw data upon which he made this claim, despite repeated requests.
“This latest work by Prof Hughes needs a thorough quality-audit to test its veracity”, says Ridd. “Prima facie, there are excellent grounds to treat it with great skepticism.”
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richard
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Where man does not go, Bikini Atoll, the coral is in pristine condition and growing like a forest. A clue in there .
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aido
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Like any animal, coral is sensitive and will adapt to changes to its environment – the sea around it. Cooling or warming of the sea, excessive turbulence of currents, pollution – any of these can cause the hard coral to expel its zooxanthellae and with them, its pink colour. This is known as bleaching and is a regular occurrence among reefs. The coral then attracts other algae which are more suited to the new conditions. Eventually, conditions change again, the zooxanthellae return and the reef regains its pink colour. Probably the best known reef is The Great Barrier Reef off the east coast of Australia. It has bleached seven times in the last thirty-five years and recovered every time.
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