Coral death knell exaggerated, says rebel quality assurance survey

New findings by reef-science outsiders tell a very different story on Great Barrier Reef.

Peter Ridd and Jennifer Marohasy have spent the past week documenting corals around Stone Island near Bowen.

The death of inshore corals near Bowen had been greatly exaggerated, according to the findings of a rebel quality assurance survey by reef-science outsiders Peter Ridd and Jennifer Marohasy.

The shallow reef flats of Stone Island have played a key role in ­divisions over the health of the ­inshore Great Barrier Reef and the impact of run-off from agriculture.

Dr Ridd was disciplined for ­attempting to blow the whistle on the widespread use of before and after pictures taken a century apart near Stone Island that suggested coral cover had disappeared.

A follow-up paper by Queensland University reef scientist Tara Clark, co-authored by Great Barrier Reef Marine Park Authority chief scientist David Wachenfeld, confirmed the coral loss.

Despite winning his unfair dismissal case against JCU and being yesterday awarded more than $1.2m by the Federal Court, Dr Ridd effectively has been dismissed as a crank by other scientists.

An expert scientific panel last month accused him of spreading scientific misinformation like pro-tobacco lobbyists and anti-vaccination campaigners.

But Dr Ridd and Dr Marohasy have spent the past two weeks documenting the corals around Stone Island, which they found were still very much alive.

The in-the-water quality assurance snapshot of onshore corals near Bowen and the Whitsundays has been partly funded by the Institute of Public Affairs.

The hundreds of hours of aerial and aquatic footage will be archived and some of this made into a documentary.

Dr Marohasy and Dr Ridd repeated the transects used in the Clark research which found there had been a serious decline in reef health from historical photographs in the late 19th century to the present.

Dr Marohasy said if the transects used in the Clark analysis had been extended by 30m to the south of Stone Island they would have found a different story.

“I saw and photographed large pink plate coral on August 25 — some more than 1m in diameter — at the reef edge just 30m from where Tara Clark and colleagues ended their transect as published in Nature,” Dr Marohasy said.

Several hundred metres away, across the headland, in the northern-facing bay, was an area of 100 per cent coral cover stretching over 25ha.

Dr Ridd said the finding of the survey was that there was “good coral all over the place” around Stone Island.

“What we saw was not consistent with the proposition that the inshore reefs have been destroyed by farm run-off,” Dr Ridd said.

He said the findings were at odds to those of Dr Clark and her team.

The survey results follow a report by GBRMPA last week that downgraded the long-term outlook for the reef from poor to very poor with particular concern about run-off in onshore reef areas.

Dr Ridd said there were “lots of people around Bowen who get very angry when people say all their coral is wiped out”.

“How would people in Sydney feel if everybody was saying that the water in Sydney Harbour has turned brown from pollution, the bridge was rusting scrap and the Opera House was crumbling ruin,” he said.

Dr Wachenfeld said it was always great to see evidence of healthy coral in inshore areas.

“The body of published science tells us most of our inshore reefs are extensively degraded,” he said. “When we find healthy patches that’s good news.”

Dr Wachenfeld said a paper published in 2016 contained information about coral around Stone Island and nearby Middle Reef.