JF Aus

*…There has been reported so called scientific evidence ocean acidification is linked to coral bleaching. So I am asking why microscopic calcite is not dissolving or otherwise impacted by acid able to damagr coral…*

Ocean acidification, (A reduction in Ph does not mean acidic. A Ph of 8.1 is not acidic), is detrimental to coral thriving.
As seawater becomes less carbonate, coral larvae lose the ability to cement themselves into position.
Corals a made from the calcium carbonate, aragonite. This is the first in line to become soluble as seawater Ph reduces.

The prediction is, at the current rate of acidification, coral reefs will be extinct by the end of this century. (80 years away).

Don't worry about bleaching, it's all over anyway as history shows.
The mass extinction at the end of the Palaeozoic era, was caused by a massive hatmospheric spike in co2. The oceans turned lethally acidic.
Life for anything with a carbonate skeleton, became impossible.

Leo Lane.
You need to educate yourself on corals, you show your ignorance!

DD: The mass extinction at the end of the Palaeozoic era, was caused by a massive atmospheric spike in co2. The oceans turned lethally acidic. Life for anything with a carbonate skeleton, became impossible.

Yep, they all died out. That's why we have corals to day. Hey, then, thinking about extinctions. Woolly mammoths & Rinos, Giant Kangas, etc. all died out for some reason but life (but not as we know it)went on anyway. Just nature doing what nature does best. Copping with change.

The little Polyps' just swim on until they find somewhere where they can attach. That's how regeneration & new Coral Reefs form.

Agronomist says:” You always were a dill, Leo Lane. “
That is in the evidence free assertion of a dishonest, climate fraud supporter, who cannot supply a reference to science showing any measurable human effect on climate.
Do you base your support for fraud on dishonesty or on ignorance Agronomist?.
If you know nothing about the science, it is your ignorance. If you know enough to be aware that there is no supporting science, then it is your dishonesty.Please clarify your position.
In any event you follow the fraud promoter procedure of derogatory, untrue names for anyone who exposes your fraud supporting.
I ask you again for a reference to any science showing a measurable human effect on climate. If as usual, you cannot supply it, I would say that makes you a dill, as well as a fraud supporter.

JayB.

*...Yep, they all died out. That's why we have corals to day...*

No. It's not why we have corals today, you need to study up on that if you want the answer!

We're right into a mass extinction now. And guess what, right on cue, oceans are acidifying as Co2 levels in the atmosphere increase. It's all so predictable.

But the precedence for blaming humans for rising levels of Co2 is non existent. Or is there?

Since the industrial revolution, the Ph of the ocean has dropped point one from 8.2. But how can we be sure if that? Well we can't! It's a belief based on conjecture.
On the surface of it, it could be construed that humans and their industry have made a contribution.

So science projects an astounding degree of conjecture. You would really need to be a scientist to have a true understanding of reality, wouldn't you think? OLO scientists project an astounding degree of conjecture too I notice.

The natural occurring Co2 in the atmosphere is indistinguishable from industrially produced Co2, so I believe it is premature to lay blame anywhere.
There is plenty of evidence of massive spikes in Co2 atmospheric levels, prior to humans even walking on the earth.

But, one thing is certain, corals are not happy critters, and plenty of research by experts in coral biology can attest to that!

Diver Dan has a short attention span. He has forgotten already that he told us of his ignorance of climate science.
He has the temerity to tell someone to update their knowledge of coral.
Here is an update for you, Diver, so that you can make an even bigger fool of yourself:” Georgiou, et al. 2015 have reported that coral reefs in the Australian Great Barrier Reef, near Heron Island, are insensitive to ocean pH changes. “
https://wattsupwiththat.com/2017/10/04/coral-reefs-temperature-and-ocean-ph/
Here is what you said, Diver:” But, one thing is certain, corals are not happy critters, and plenty of research by experts in coral biology can attest to that!”
It certainly reminds us of your ignorance, as it should remind you. You know nothing about coral, do you, Diver?

Attention : Peter Ridd.

Jayb,
There is more sediment deposited on the northern Queensland coast that anywhere else on the east coast of Australia.

Heavy sand sediment falls out of the alongshore current and down over the contintental shelf off northern Frazer Island. Lighter suspended matter and dissolved nutrient continues northwards within current pushed northward by energy flow from the alongshore current as it leaves Frazer Island.

Energy in flow that transports heavy sand cannot just stop at Fraser Island. That flow continues into the GBR lagoon and some must reach Cape York. Prevailing SE winds press that fresher surface water against the Queensland coast. The majority of turbid sediment-linked water in the GBR lagoon exists that lagoon at Cape York, though significant suspended matter becomes sediment along the way. That sediment assists mangrove growth along that coast.

I think Peter Ridd could submit defence by way of example that JCU and GBRMPA ignore the science associated with the nutrient load entering GBR waters from the Australian east coast sediment dispersal flow.

Why is southern nutrient load flow into GBR waters not included in GBR science? I think, (a) because government is virtually the polluter, (b) sewage rate money is applied elsewhere, (c) managing the relevant nutrient load mayq hinder some coastal development.