Coral Bleaching Just As Bad In 18thC

Posted: August 17, 2018 by oldbrew in alarmism, climate, Critique, Ocean dynamics, propaganda, research

Many believe the forces of climate alarm got Professor Peter Ridd fired for saying what he thought about the recovery powers of the GBR.


By Paul Homewood

A new study finds that coral bleaching on the Great Barrier Reef is nothing new.

From the Evening Express:


Large-scale coral bleaching has raised concern about the future of the ecosystems and the impact their loss could have on biodiversity.

Dr Sebastian Hennige, researcher

The teams found the frequency of bleaching has increased since the 1800s and, despite corals’ ability to recover, there are fears they could now be approaching a “critical threshold”.

Dr Nick Kamenos from Glasgow’s School of Geographical and Earth Sciences said: “It’s clear in the core data we examined that bleaching has been occurring on the Great Barrier Reef for at least 400 years, but the frequency of bleaching events has increased markedly since the early 1800s and those events have affected 10% more corals since the late 1700s.

“We can see that corals have been able to acclimate and recover from past…

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  1. oldbrew says:

    See Ian Wilson’s comments in a letter to The Australian here…

    Coral bleaching is a problem that goes back four centuries
    – – –
    BBC – Heat tolerant corals of Eritrea [2008]
    As the Red Sea water is so warm it is an ideal place to study the impact of heat on coral.

    In Eritrea the coral is not only surviving these warm temperatures but is thriving. It is thought that there might be a heat resistant algae that exists in coral in the Red Sea. If this algae can be extracted, scientists believe there may be a way of saving coral around the world from bleaching.

    The extraction idea may be absurd but the ‘heat tolerance’ tells its own story. Coral is adaptable in the end.

  2. ren says:

    Now the Great Barrier Reef can rest.

  3. tom0mason says:

    The teams found the frequency of bleaching has increased since the 1800s and, despite corals’ ability to recover, there are fears they could now be approaching a “critical threshold”.

    So by looking as a very short time period in the reefs existence they “believe” “they could now be approaching a “critical threshold”. Not overly scientific a mere conjecture considering how long coral have survived in the seas and oceans.

    ” The Great Barrier Reef Marine Park Authority (GBRMPA) considers the earliest evidence of complete reef structures to have been 600,000 years ago.[24] According to the GBRMPA, the current, living reef structure is believed to have begun growing on the older platform about 20,000 years ago.[24] The Australian Institute of Marine Science agrees, placing the beginning of the growth of the current reef at the time of the Last Glacial Maximum. At around that time, sea level was 120 metres (390 ft) lower than it is today.”

    So I presume that during all that time it has suffered more stress and temperature variation then the pifflingly slight amount it currently has to endure.
    Who is to say that this bleaching is not a survival tactic by the coral polyps, whereby it sheds less efficient symbiotic organisms for better ones during this process? And could this process be linked to other effects such as the solar/lunar cycle as well as temperature?
    With so little known about these creatures surely it is very premature to surmise that they are about to become very threatened by such small changes in the biosphere.

  4. oldbrew says:

    despite corals’ ability to recover, there are fears…

    Never mind what is known, got to keep the alarm levels high.

  5. oldbrew says:

    Date: 16/08/18 Graham Lloyd, The Australian

    The findings are at odds with claims that mass coral bleaching is a recent phenomenon due to climate change. Scientists studied the tree ring-like lines of annual growth in 44 coral drill core samples. They were able to reconstruct the history of bleaching events each coral had survived. Results showed the number of bleaching years per decade had increased between 1620 and 1753 when up to six years of each decade showed bleaching in at least 20 per cent of coral cores.
    – – –
    No heavy industry, factories, motors etc. in the 17th century 😐

  6. Thanks oldbrew for linking to my post. Here is my comment to the Australian newspaper that was posted on the 16/08/2018:

    “Choosing 1850 as your starting point and then claiming that coral bleaching is increasing, is a classic case of false logic called cherry-picking. Looking at the data, I could just as easily claim that coral bleaching is controlled by the level of solar activity. There have been two periods in the last 400 years where the level of sunspot activity on the Sun has dramatically decreased. They are the Maunder minimum and the Dalton minimum. Both were associated with distinct periods of cooling in the world’s mean ocean temperatures, with the Maunder minimum reaching its coolest temperatures in about 1660 and the Dalton minimum in 1820. This matches the observed minimums in coral bleaching observed around these same dates. If the world’s mean ocean temperatures are in fact affected by the level of sunspot activity, then we should expect the level of coral bleaching to decrease between about 2020 and 2050, matching the expected decrease in solar activity.”

  7. Of course this Professor from Glasgow knows a lot about Australia (Sarc)