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Australian tourism head attacks scientists for publishing science on coral bleaching.

OK then explain what we can do about low water levels and why it is important. Meanwhile in 2005 half the coral reefs in the Caribbean bleached from high water temps due to AGW.



https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2981599/

You ask the question like there is something we can do about it.
Likely not much, and the reef will recover just fine.
Also they suspect that high water temperature cause the 2005 Caribbean bleaching.
Consider this, the 2005 GISS zone temperature, 24 N to 24S was .6 C,
most of the years since then have been warmer, (2016 .98 C) has the bleaching in the Caribbean continued?
The reality is that we do not have enough information on the reefs to say weather the bleaching is unusual.
 
You ask the question like there is something we can do about it.
Likely not much, and the reef will recover just fine.
Also they suspect that high water temperature cause the 2005 Caribbean bleaching.
Consider this, the 2005 GISS zone temperature, 24 N to 24S was .6 C,
most of the years since then have been warmer, (2016 .98 C) has the bleaching in the Caribbean continued?
The reality is that we do not have enough information on the reefs to say weather the bleaching is unusual.

LOL Right we don't have any data on the rising temperatures of the oceans which is the major cause of these massive bleaching events. Water temperature in the Caribbean were at record levels in 2005 in all the areas that experienced bleaching. I know it just a coincidence to deniers like you. But science says otherwise.

Coral reefs across the world’s oceans are in the midst of the longest bleaching event on record (from 2014 to at least 2016). As many of the world’s reefs are remote, there is limited information on how past thermal conditions have influenced reef composition and current stress responses. Using satellite temperature data for 1985–2012, the analysis we present is the first to quantify, for global reef locations, spatial variations in warming trends, thermal stress events and temperature variability at reef-scale (~4 km). Among over 60,000 reef pixels globally, 97% show positive SST trends during the study period with 60% warming significantly. Annual trends exceeded summertime trends at most locations. This indicates that the period of summer-like temperatures has become longer through the record, with a corresponding shortening of the ‘winter’ reprieve from warm temperatures. The frequency of bleaching-level thermal stress increased three-fold between 1985–91 and 2006–12 – a trend climate model projections suggest will continue. The thermal history data products developed enable needed studies relating thermal history to bleaching resistance and community composition. Such analyses can help identify reefs more resilient to thermal stress.

https://www.nature.com/articles/srep38402
 
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LOL Right we don't have any data on the rising temperatures of the oceans which is the major cause of these massive bleaching events. Water temperature in the Caribbean were at record levels in 2005 in all the areas that experienced bleaching. I know it just a coincidence to deniers like you. But science says otherwise.



https://www.nature.com/articles/srep38402

Bleaching schmeaching. Ridd pointed out the lack of historical perspective is a primary driver of ignorant claims of unprecedented and catastrophic bleaching. It has happened before and it will happen again, and the corals will be just fine.
 
Corals have thrived in much warmer waters in the past, they will continue to do so in the future. What kills coral is exposure to air, you you enviro-nitwits keep an sounding the alarm that the seas are rising (a few inches a century)

Cant you keep your stories straight even for a minute?
 
Corals have thrived in much warmer waters in the past, they will continue to do so in the future. What kills coral is exposure to air, you you enviro-nitwits keep an sounding the alarm that the seas are rising (a few inches a century)

Cant you keep your stories straight even for a minute?

LOL Could a post sound any more ignorant? Is this what you do when there's no footballl on?
 
Have you read anything at all about how damaging very small quantities of sunscreen are to coral?

I'm sure it is nothing compared to The Effects of Gamma Rays On Man In the Moon Marigolds. :lol:
 
Originally Posted by SirGareth View Post
Corals have thrived in much warmer waters in the past, they will continue to do so in the future. What kills coral is exposure to air, you you enviro-nitwits keep an sounding the alarm that the seas are rising (a few inches a century)

Cant you keep your stories straight even for a minute?

LOL Could a post sound any more ignorant? Is this what you do when there's no footballl on?

1, Do you dispute that corals have and do live in warmer waters than the Carribean?

2, Do you dispute the fact that sea level changes are at the rate of a few inches per century, up to a foot?

3, If you cannot dispute either of these points Gareth deserves your appology, for it is you that is the ignorant one.
 
1, Do you dispute that corals have and do live in warmer waters than the Carribean?

2, Do you dispute the fact that sea level changes are at the rate of a few inches per century, up to a foot?

3, If you cannot dispute either of these points Gareth deserves your appology, for it is you that is the ignorant one.

I'm not interested in your deflections. The fact is that half the coral in the world has disappeared in 30 years deserves more respect than that. I appears that everything is the new normal to you. It is pretty depressing. Hollow souls always are.
 
I'm not interested in your deflections. The fact is that half the coral in the world has disappeared in 30 years deserves more respect than that. I appears that everything is the new normal to you. It is pretty depressing. Hollow souls always are.

You have no clue about any science at all.
 
He is a huge liar. Coral bleaching is known to be caused by overheated water and is directly caused by AGW's heating of the oceans. It is not "cyclical" except that it happens when water temperature reaches the breaking point. No where are the effects of AGW so clear as in this chart of sea surface temperatures. 90% of the excess heat from AGW is absorbed by our seas.

sea-surface-temp-figure1-2016.png

Would it be correct to assume that you do not know that your graph DOES NOT represent actual DATA but instead represents the GUESSES of the global warming alarm fraudsters?
 
Corals already have the genes to survive another 250 years of climate change



Anew paper finds that there is already enough genetic variety spread across the Great Barrier Reef to adapt to the imagined “unprecedented” warming coming in the next two centuries. We don’t need to rely on random mutations or consider fantasy solutions of man-made oceanic sunscreens, mass sunshades, or giant reef fans. Corals already have a major immigration program running pretty effectively to juggle 200 million years of genetic material and then spread the successes far and wide. Meddling humans can help things (maybe) by moving a few bits of coral around. That’s it. Cancel the scare please.
Skeptics have been saying this for years — who needs a computer model to predict that the Barrier Reef will adapt? How bad could global warming be? The global oceans span a 32C range and corals prefer the hottest five degrees of that. Indeed, there is a five degree temperature range from one end of the Great Barrier Reef to the other, and corals are clearly, obviously pretty happy about. Meanwhile, the atmosphere is warming at a mere tenth of a degree per decade. Then there is the well known phenomenon that corals spawn in vast clouds that are so big they can be seen from space and there is a whole new generation of corals every five years. You don’t need to be Nostradamus to figure out that survivors from some parts of the reef will reseed other parts, as they have done for eons. Half of the coral genera around today have been around since the Oligocene (23-34 million years ago).
Corals also adapt to heatwaves by chucking out the algal symbionts that don’t thrive in higher temperatures. So on top of their own genetic adaptability, they can “gear up” in different ways too. In the unlikely event that IPCC climate models are right for the first time in history, corals will cope.
h/t to GWPF which has a library of coral reef science news.
Climate change just shifts this large range slightly south. So what?
Corals are already happy coping across a five degree range of water temperature.

If the water gets warmer to the South, Great Barrier Reef corals will probably spread further.
Keppel Island at the far south end has quite a different population

(A) Locations of sampled populations where mean midsummer month sea surface temperature differed by up to ~3°C. (B) Principal component analysis of water quality and temperature parameters at the sampled locations. Winter.T—10% quantile of winter temperature, Summer.T– 90% quantile of summer temperature, Daily.T– 90% quantile of daily temperature range, Phos–total dissolved phosphorus, Chl–chlorophyll, NO3 –nitrate, Secchi–Secchi depth (water clarity). Locations are colored according to summer temperature as in panel A. (C) Principal component analysis of genome-wide genetic variation (inset–Acropora millepora). Centroid labels are initial letters of population names as in panel A. (D) ADMIXTURE plot of ancestry proportions with K = 2 (the lowest cross-validation error was observed with K = 1). Analyses on panels C and D were based on 11,426 SNPs spaced at least 2.5 kb apart and not including F[SUB]ST[/SUB] outliers. . . .

What recent increase in “catastrophic” coral bleaching events? We have no long term good data on historic bleaching events, the extent of bleaching is hotly contested, and corals are already recovering. If there was mass coral bleaching in 1066, and corals didn’t recover til 1086, how would we know?
Keep reading →




 
Greetings, Jack. :2wave:

:thumbs: :thumbs: Corals have not been an everyday topic around here, so it was very pleasant to read about something that has managed to adapt to changing environments over millions of years while assisting many other species of animal life to survive.

I was very surprised to learn that coral is listed as "fauna" - since it's considered animal life by biologists! Son of a gun! I always thought of coral as "flora" because it looks like beautiful multi-colored flowers.
Back to more "book-learnin' for me!" :mrgreen:
 
Corals already have the genes to survive another 250 years of climate change



Anew paper finds that there is already enough genetic variety spread across the Great Barrier Reef to adapt to the imagined “unprecedented” warming coming in the next two centuries. We don’t need to rely on random mutations or consider fantasy solutions of man-made oceanic sunscreens, mass sunshades, or giant reef fans. Corals already have a major immigration program running pretty effectively to juggle 200 million years of genetic material and then spread the successes far and wide. Meddling humans can help things (maybe) by moving a few bits of coral around. That’s it. Cancel the scare please.
Skeptics have been saying this for years — who needs a computer model to predict that the Barrier Reef will adapt? How bad could global warming be? The global oceans span a 32C range and corals prefer the hottest five degrees of that. Indeed, there is a five degree temperature range from one end of the Great Barrier Reef to the other, and corals are clearly, obviously pretty happy about. Meanwhile, the atmosphere is warming at a mere tenth of a degree per decade. Then there is the well known phenomenon that corals spawn in vast clouds that are so big they can be seen from space and there is a whole new generation of corals every five years. You don’t need to be Nostradamus to figure out that survivors from some parts of the reef will reseed other parts, as they have done for eons. Half of the coral genera around today have been around since the Oligocene (23-34 million years ago).
Corals also adapt to heatwaves by chucking out the algal symbionts that don’t thrive in higher temperatures. So on top of their own genetic adaptability, they can “gear up” in different ways too. In the unlikely event that IPCC climate models are right for the first time in history, corals will cope.
h/t to GWPF which has a library of coral reef science news.
Climate change just shifts this large range slightly south. So what?
Corals are already happy coping across a five degree range of water temperature.

If the water gets warmer to the South, Great Barrier Reef corals will probably spread further.
Keppel Island at the far south end has quite a different population

(A) Locations of sampled populations where mean midsummer month sea surface temperature differed by up to ~3°C. (B) Principal component analysis of water quality and temperature parameters at the sampled locations. Winter.T—10% quantile of winter temperature, Summer.T– 90% quantile of summer temperature, Daily.T– 90% quantile of daily temperature range, Phos–total dissolved phosphorus, Chl–chlorophyll, NO3 –nitrate, Secchi–Secchi depth (water clarity). Locations are colored according to summer temperature as in panel A. (C) Principal component analysis of genome-wide genetic variation (inset–Acropora millepora). Centroid labels are initial letters of population names as in panel A. (D) ADMIXTURE plot of ancestry proportions with K = 2 (the lowest cross-validation error was observed with K = 1). Analyses on panels C and D were based on 11,426 SNPs spaced at least 2.5 kb apart and not including F[SUB]ST[/SUB] outliers. . . .

What recent increase in “catastrophic” coral bleaching events? We have no long term good data on historic bleaching events, the extent of bleaching is hotly contested, and corals are already recovering. If there was mass coral bleaching in 1066, and corals didn’t recover til 1086, how would we know?
Keep reading →





Wow.

That’s an embarrassing post for a scientist. ‘No big deal’?

Oh, wait. JoNova isn’t a scientist.
 
Wow.

That’s an embarrassing post for a scientist. ‘No big deal’?

Oh, wait. JoNova isn’t a scientist.

That might be relevant, If she were the author.
Potential and limits for rapid genetic adaptation to warming in a Great Barrier Reef coral
Of course this might have been obvious to you if you had read the first sentence of JoNova's article.
A new paper finds that there is already enough genetic variety spread across the
Great Barrier Reef to adapt to the imagined “unprecedented” warming coming in
the next two centuries.
 
Greetings, Jack. :2wave:

:thumbs: Corals have not been an everyday topic around here, so it was very pleasant to read about something that has managed to adapt to changing environments over millions of years while assisting many other species of animal life to survive.

I was very surprised to learn that coral is listed as "fauna" - since it's considered animal life by biologists! Son of a gun! I always thought of coral as "flora" because it looks like beautiful multi-colored flowers.
Back to more "book-learnin' for me!" :mrgreen:

Greetings Polgara.:2wave:

If only everyone were as eager as you to learn.:mrgreen:
 
I wasn’t talking about the article, I was talking about the ludicrous blog post.
Why she was not the author of the referenced paper?
Is any paper mentioned in a blog suddenly suspect?
 
Spatial and temporal patterns of mass bleaching of corals in the Anthropocene | Science

“Not enough time for recovery:

Coral bleaching occurs when stressful conditions result in the expulsion of the algal partner from the coral. Before anthropogenic climate warming, such events were relatively rare, allowing for recovery of the reef between events. Hughes et al. looked at 100 reefs globally and found that the average interval between bleaching events is now less than half what it was before. Such narrow recovery windows do not allow for full recovery. Furthermore, warming events such as El Niño are warmer than previously, as are general ocean conditions. Such changes are likely to make it more and more difficult for reefs to recover between stressful events.”
 
Spatial and temporal patterns of mass bleaching of corals in the Anthropocene | Science

“Not enough time for recovery:

Coral bleaching occurs when stressful conditions result in the expulsion of the algal partner from the coral. Before anthropogenic climate warming, such events were relatively rare, allowing for recovery of the reef between events. Hughes et al. looked at 100 reefs globally and found that the average interval between bleaching events is now less than half what it was before. Such narrow recovery windows do not allow for full recovery. Furthermore, warming events such as El Niño are warmer than previously, as are general ocean conditions. Such changes are likely to make it more and more difficult for reefs to recover between stressful events.”

Full text is pay walled so I don't know how he managed to get the data for the earlier periods.

I was under the impression that there was no such data as we have only been looking at the reefs in this detail since 1980 or so.
 

Full text is pay walled so I don't know how he managed to get the data for the earlier periods.

I was under the impression that there was no such data as we have only been looking at the reefs in this detail since 1980 or so.

Well, here’s some commentary on it.

The window for saving the world's coral reefs is rapidly closing: The world's reefs are under siege from global warming -- ScienceDaily

Corals are severely bleaching five times as often as in 1980 | Science News
 
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