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Massive Coral Growth at the Great Barrier Reef Continues to Defy all the Fashionable Doomsday Climate Predictions

by Chris Morrison
4 August 2022 6:07 PM

The near vertiginous rise in the annual growth of coral at the Great Barrier Reef (GBR) is continuing, with further major increases recorded across large areas. According to the 2021-22 annual summary from the Australian Institute of Marine Science (AIMS), levels of coral cover in the northern and central areas of the reef were at their highest levels over the past 36 years of monitoring.

The growth is of course excellent news for environmentalists, but curiously, at the time of writing, the news is being downplayed in the mainstream media. The demise of the world’s coral reefs has long been a go-to poster scare story for Net Zero promoters. As late as October 2020, the BBC  was telling stories about the Reef losing half of its coral. The Guardian was one of the first to set the coral doomsday ball rolling when George Monbiot told its readers in 1999 that the “imminent total destruction of the world’s coral reefs is not a scare story”. Noting the recent record growth, the newspaper added that “global heating could jeopardise recovery”.

This notion that global warming will cause corals to die is frankly a big whopping fib. Tropical coral, which is closely related to its cnidarian cousin the jellyfish, thrives in waters between 24°C and 32°C. It is highly adaptable but seems to dislike sudden changes in temperature, often caused by natural weather oscillations such as El Niño events. As the latest results from the AIMS show, coral quickly recovers when normal localised conditions return. In fact, coral often grows faster in warmer waters nearer the equator than the GBR. The big agitprop lie suggests minor long-term sea temperatures changes will wipe out the coral, but the scientific evidence suggests otherwise.

The sensational growth is clearly seen in the above graph for the northern reef. Recovery is said to have continued following a “period of cumulative disturbances” from 2014 to 2020. Only three of the 24 reefs surveyed in the last two years had decreased hard coral cover. The biggest disturbance, of course, arose around 2016 and was caused by a powerful, and natural, El Niño Pacific oscillation that quickly raised surrounding ocean temperatures by up to 3°C. Sudden warming spooks the coral and they expel symbiotic algae in a process commonly known as bleaching. As we can see, this is quickly reversed when sea temperatures stabilise. Corals have been around, in one form or another, for 500 million years. It is likely this natural process extends back that far to the birth of life as we know it on Earth.

In the central reef, the declines seen in 2012 and 2016 were due to natural events, namely Cyclone Yasi in 2012 and El Niño in 2016. The latter led to bleaching to around 2019, and matters were not helped by outbreaks of crown-of-thorns starfish attacks. Since then, the growth has been spectacular. Last year saw hard coral cover increase to 33%, said to be the highest for this region. Over the last two years, hard coral cover declined on only four individual reefs, and increased on most of the rest surveyed.

The southern part of the GBR has generally displayed the highest coral cover, but according to the AIMS it has been the most “dynamic” over the 36-year survey history. In recent years there has been good growth after the 2016 El Niño depredations, but there have been major attacks by starfish. AIMS notes that many southern reefs have high coral cover, but starfish continue to decimate some areas.

Overall, the GBR seems to be in excellent shape. The AIMS notes that in the northern and central regions, hard coral cover reached 36% and 33% respectively. Reefs consist of much more than hard coral and contain a diversity of other species along with sponges and algae. The AIMS defines 30-50% as a “high value”, based on historical surveys.

Nevertheless coral is still too valuable a weapon in the green agenda to be discarded lightly. Despite highlighting some stunning reverses of the recent natural coral declines, the AIMS seems to be sticking to the trendy apocalyptic story. “The predicted consequences of climate change, which include more frequent and intense mass coral bleaching events, are now a contemporary reality. Simultaneously, chronic stressors such as high turbidity, increasing ocean temperatures and changing ocean chemistry can all negatively affect recovery rates, while more frequent acute disturbances mean that the intervals for recovery are becoming shorter,” it concludes.

For what it’s worth, my own hunch is that the little critters will still be around in another 500 million years, maybe longer.

Chris Morrison is the Daily Sceptic’s Environment Editor.

Tags: AustraliaClimate AlarmismClimate JournalismGreat Barrier Reef

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9 Comments
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NeilParkin
NeilParkin
2 years ago

Soooo,

The Barrier Reef is in rude health,
The Arctic and Antarctic ice coverage is at record levels,
There are more polar bears than there ever have been.

Remind me what CO2 was going to do to all of us..?

116
-1
Marcus Aurelius knew
Marcus Aurelius knew
2 years ago

Oh Chris, you’re so behind! The Great Barrier Reef is recovering because of lockdowns! It will start to recede again now that everyone is flying off on holiday and stuff!

Last edited 2 years ago by Marcus Aurelius knew
41
-3
Dr G
Dr G
2 years ago

Professor Peter Rudd, a physician involved in studying the reef over several decades, was dismissed from James Cook University a couple of years ago for basically pointing out that the reef was not in mortal danger.
Concurrently, researchers involved in perpetuating the “dying reef” scenario have found themselves awash in government funding.

48
-1
ebygum
ebygum
2 years ago
Reply to  Dr G

He’s still fighting on…this interview from February this year is well worth a listen…

“Dr Peter Ridd explains why Scott Morrison has announced $1 billion investment to protect the Great Barrier Reef:
‘The government is ending up being forced to pay protection money, not to protect the Great Barrier Reef, but to protect itself against UNESCO, which are going to write another report on the Reef and they need to pay this money.
And the irony is that, of course, UNESCO is using pseudo-scientific evidence that’s been produced by our own untrustworthy science organisations.’

https://www.youtube.com/watch?v=2R3_pqSznlE

8
-1
Dr G
Dr G
2 years ago
Reply to  Dr G

Apologies to Peter.
I meant to say “a physicist”.

0
-1
Matt Dalby
Matt Dalby
2 years ago

Satellite measurements have shown an increase in terrestrial plant life (global greening) due in part to increased CO2 in the atmosphere. Presumably there has also been an increase in the amount of CO2 dissolved in the oceans which is having a similar effect. All types of coral are reliant on symbiotic algae, therefore it seems likely that some of the increase in coral growth is due to increased productivity of their algal partners and burning fossil fuels could actually be beneficial to corals (and everything else that lives on the reef).

18
0
Lockdown Sceptic
Lockdown Sceptic
2 years ago

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8
-1
Hansa1
Hansa1
2 years ago

This should be spread everywhere.

3
-1
Bella Donna
Bella Donna
2 years ago

Yes I heard this some time ago that contrary to the alarmist rubbish being pumped out the Barrier Reef was in actual fact growing! Similarly the plight of the polar bears who were dying because the icecaps were melting when in fact there are so many they are becoming a nuisance, in addition to the seas were rising, yet Obama and his elitist mates were buying property on the beachfronts. There is absolutely nothing one can believe anymore when everything they say has been proven to be a pack of lies.

9
-1

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