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Great Barrier Reef Has Died Five Times In Last 30,000 Years, Study Says (newsweek.com)
schwit1 quotes a report from Newsweek: You may well have heard that Australia's iconic Great Barrier Reef is dying as warmer and more acidic waters bleach the system's vibrant coral reefs. In fact, a heat wave killed nearly a third of the system's corals in 2016. Now, scientists writing in the journal Nature Geoscience have discovered the reef has bounced back from near-extinction five times in the last 30,000 years. The current stresses, however, are probably far more intense than those felt in the past.
Low sea levels 30,000 and 22,000 years ago killed coral by air exposure. The remaining reef shifted seaward and eventually bounced back. Rising sea levels -- like those we see today -- killed off the coral twice between 13,000 and 17,000 years ago. This time, coral inched close to land to survive. The reef system, the scientists think, migrated up to 60 inches a year in the face of a changing environment. The last of the five great die-offs occurred about 10,000 years ago, and was likely caused by a huge influx of sediment, a reduction in water quality and a general sea level rise. The reef system may be due for another die-off sometime in the next few thousand years "if it follows its past geological pattern," study author Jody Webster told AFP. "But whether human-induced climate change will hasten that death remains to be seen."
Low sea levels 30,000 and 22,000 years ago killed coral by air exposure. The remaining reef shifted seaward and eventually bounced back. Rising sea levels -- like those we see today -- killed off the coral twice between 13,000 and 17,000 years ago. This time, coral inched close to land to survive. The reef system, the scientists think, migrated up to 60 inches a year in the face of a changing environment. The last of the five great die-offs occurred about 10,000 years ago, and was likely caused by a huge influx of sediment, a reduction in water quality and a general sea level rise. The reef system may be due for another die-off sometime in the next few thousand years "if it follows its past geological pattern," study author Jody Webster told AFP. "But whether human-induced climate change will hasten that death remains to be seen."
13,000 years ago the sea level was 130 m lower than today, so the reef was 130 m above the sea.
Republicans will refuse to read this part because it's information they don't already have in their ideagut. "See, nothing matters! Let's go back to treason like it does nothing also."
You gonna git it sucka! Always. ALWAYS! fly anonymously like then you avoid FUCKIHG YOURSELF IN THE ARSE!
To be honest we're not related and I don't even know you, nor will I make a cent when you die, but I sure can't wait until it happens because you truly are boring AF in every possible way.
Go extinct ASAP, make room for ANYTHING ELSE. Not a joke, not an insult. Just bury yourself.
All of these chicken littles view these changes in nature as if they are happening in a vacuum.
Nature is like a beanbag. Push here and it pops out there. One change spawns another change. Nothing is static and nature isn't in a vacuum.
What, you think we will run out of rocks for our aquariums? The pet stores paint the rocks anyway. Dead or alive, not my problem.
To deliver me my Britney Speared porn from her prime days.
I don't need deepfake news from studies paid for by the gas and oil industries.
Actually, Nature *is* in a vacuum. It surrounds the entire planet.
Cave Trump did it in 20,000 BC!
Cable News Tablet said so! None of those fake smoke signals, like from burning Fox Pelts.
Table-ized A.I.
By increasing The Economy - Donald TRUMP has ruined the enivronment.
And who do you think YOU are? Don't tempt me to trace you back to a Russian IP. You have been warned.
Trace me bitch. I dare you.
Thanks folks I'll be here all night.
93.90.32.134
Game. Over.
By destroying the economic regulations designed to prevent the recurrence of another Great Recession Trump has condemned us to repeat of the disasterous final years of the Bush recession, where the economy fell off a cliff after a similar period of financial deregulation and environmental destruction.
Who the fuck are you? I know you are an American Trump supporter because you are that fucking stupid.
I'm a Real American because unlike you I don't support an abject fucking traitor who is owned and controlled by Russia.
That's not even the IP address of my VPN, idiot.
So because you can do something to one part of nature and it has an affect on another part of nature... we shouldn't worry about the affects we're having on nature?
It's turtles all the way down.
for half a billion years.
They have had worse.
That's pretty much what he's saying.
Interestingly nothing in the rest of the summary or links support that statement, which clearly was put there just so self-righteous dullards like yourself won't accuse the study to be conservative propaganda. Looks like it worked.
I don't think that is what the post that you are responding to means. I take it to mean that the loss that the Great Barrier Reef is currently experiencing is not as great a threat (at the present moment) as some portray it. In practice terms, there is more time to solve/remediate the problem and to restore the Great Barrier Reef to its modern condition. That is, the best solution can be found and applied instead of a stop-gap or knee-jerk remedy.
Except when it doesn't.
“Common sense is not so common.” — Voltaire
All of these chicken littles view these changes in nature as if they are happening in a vacuum.
Nature is like a beanbag. Push here and it pops out there. One change spawns another change. Nothing is static and nature isn't in a vacuum.
Tell that to the Mammoths, Dinosaurs, and the obligate anaerobes that predated cyanobacteria.
Just because a system is resilient doesn't mean you can do whatever the hell you want to it and come out fine.
I stole this Sig
Good the LNP won't have to spend any money on the reef.
Abrupt means over hundreds or thousands of years.
Haven't had ocean temps rise as fast as they are in this man made event.
The sea level is changing faster than any time in the past.
Movement of coral 0.2–1.5myr1 won't really help this time around.
Go well
I don't think anyone has said its loss will destroy the world, but rather its lots is like a canary in a coalmine.
Push the beanbag of coral reefs and the ecosystem that provides humans with fisheries pops. Push the fisheries and populations of SE Asia will pop across borders en masse, as they are faced with serious threat of poverty and famine. This all leads to suffering and conflict that did not need to happen.
Call me chicken little all you like, I still think that politics is about exercising power AND ethics, not just observing and passively waiting for the next equilibrium.
If I were to lop off a limb, you would not bleed to death right away. The blood vessels automatically contract to keep you alive. But that only helps you with short term survival. You still might not make it.
If I chop off all your limbs at once, even if the blood stops flowing out where your arms and legs used to be, your chance of survival go way down, obviously. There are military personal who have lost multiple limbs and lived.
If your limbs are off and I keep hacking so you keep bleeding, you become dead meat.
Apply the analogy to the Great Barrier Reef. Loosing a limb is like rising/falling sea levels. Loosing all limbs is like ocean acidification. Changing sea levels plus acidification plus rising water temperature plus plastic ocean waste plus ... is like hacking up your body without stopping. And it's not just the Great Barrier Reef, it's all the oceans, the Amazon Basin, the atmosphere, basically the entire planetary ecosystem.
Do you get the picture? If this doesn't convince you them perhaps you could volunteer and we could do the experiment. Or course you would have to buy a coffin and a burial plot first...
Why is Snark Required?
All of these chicken littles view these changes in nature as if they are happening in a vacuum.
Nature is like a beanbag. Push here and it pops out there. One change spawns another change. Nothing is static and nature isn't in a vacuum.
Tell that to the Mammoths, Dinosaurs, and the obligate anaerobes that predated cyanobacteria.
Just because a system is resilient doesn't mean you can do whatever the hell you want to it and come out fine.
Mammoths turned into elephants. Dinosaurs turned into birds. Etc.
Enjoy life! This is not a dress rehearsal.
I take it to mean that the loss that the Great Barrier Reef is currently experiencing is not as great a threat (at the present moment) as some portray it.
We don't know that. Just because it has suffered before, and recovered, doesn't say much about current threat. It could be worse this time.
That is, the best solution can be found and applied instead of a stop-gap or knee-jerk remedy.
We already know the best solution, but we don't want to apply it.
Mammoths turned into elephants. Dinosaurs turned into birds. Etc.
That's not how evolution works.
93.90.32.134
Game. Over.
Well, you're definitely not the real BeauHD.
The real BeauHD would have posted 127.0.0.1
This is all fear mongering. There are reefs in the world with water FAR hotter than the great barrier reef. Despite what researchers who benefit from government funding would like you to believe, there is far from agreement that the reef is in any way in trouble.
is the Achilles Heel of climate science. Define "normal" for our climate. Is it normal for barrier reefs to die out? Apparently so. Now that humans are on the scene if we experience another loss of the reefs, would that still be normal?
"We receive as friendly that which agrees with, we resist with dislike that which opposes us" - Faraday
Please cite your evidence for treason.
127.0.0.1
Expect to get hacked by the CIA in 3, 2, 1...
...it's all because of humans...
Yea, also, hopefully what pops is humanity as mass migration gives room to a global pandemic that reduces the population by 95% and humans evolve into dead. That would rebalance the planet right quick.
It isn't a strong vacuum, moron.
If things swing back the other way dead corals will bounce back within a year or two.
Now specific man-made problems such as silting, runoff, fishing, recreational diving, and anchor dragging and kill off corals in an area and should be addressed as solvable solutions. Trying fight climate change well that is just pissing into the wind. Even without the so called global warming caused by mankind the reefs were going to die off and relocated anyway.
ok, but in all these situations there where enoug time to react to the changes of that period. If the changes are too fast, maybe there will be no time to react and survive.
-no sig today-
No, just that when folks talk about sea level rise killing the reef, it's best to put the current change in perspective. When the authors talk about:
Rising sea levels—like those we see today—killed off the coral twice between 13,000 and 17,000 years ago
and then you look at the historical record, a scientist (someone skeptical of a claim without data) should go "huh?" We've seen massive sea level changes in the past, compared to what is happening now, and the reef survived.
When you look at what has actually happened in the past, it's kind of humbling that for all our faults, we result in nothing different than noise in the system.
Browsing at +1 - no ACs, I ignore their posts. So refreshing!
They had sensible C02 emission laws 30,000 years ago!
Earth is a single point of failure.
Republicans will refuse to read this part because it's information they don't already have in their ideagut. "See, nothing matters! Let's go back to treason like it does nothing also."
Oh we read it. When we see a word like "probably" in a scientific description, we can rightfully cast some level of doubt. You know, just like the "Population Bomb" that was probably going to doom us in the '70s.
....We already know the best solution, but we don't want to apply it.....
No, you most certainly do not know the best solution.
That's exactly how evolution works. For these particulars, that is not what happened to many dinosaurs and mammoths.
It doesn't filter out stupid little children like Donald Trump, either.
I'll tell you what should be a requirement for voting - having an education.
Okay, just yelled that at the dinosaurs eating at the suet block I put out for them. They ignored me.
What, someone told you dinosaurs were extinct?? We shall politely assume they were misinformed....
"I do not agree with what you say, but I will defend to the death your right to say it"
> Yea, also, hopefully what pops is humanity as mass migration gives room to a global pandemic that > reduces the population by 95% and humans evolve into dead.
And yet, you don't seem to really believe that enough to step up and off yourself....that's the logical consequence.
Ferret
Sic gorgiamus allos subjectatos nunc
Heh...well said sir.
Ferret
Sic gorgiamus allos subjectatos nunc
What do you feel is the "best solution", exactly?
Be precise please.
Ferret
Sic gorgiamus allos subjectatos nunc
If it dies, it dies. Big whoop.
We can make artificial reefs out of junk cars and old tires. Wildlife actually prefer these types of reefs to the old fashioned kind.
I'd like to dump barrels of tetraethyllead onto the Great Barrier Reef to help speed things along.
"I said the Earth would survive. I didn't say you would..."
Life, conceptually and in the largest sense, is enormously adaptive. However only a fool defecates in their own living room and makes their house unfit for habitation. We risk making the Earth an unpleasant place to live for humanity. Triggering the next Devonian or Permian Extinction is essentially a worst-case scenario and ought to be avoided.
Flippantly suggesting that Nature will self-adjust and has nothing to do with Man, is not wise.
Yea, this is the typical response from right wing fucks. 'You don't like capitalism but you have an iPhone, hypocrite!'
The reality is you live in the situation you live in. Obviously, I've considered(and still do) an early exit, but that would just increase the density of worms like you. I would rather go out with the mass-human extinction event to ensure the right humans are left behind.
You really are big on your insults, but I notice rather lacking in facts.
Here is one for you: How about a university FIRING a major research professor for daring to publicly discuss the fact that they are basically faking their reef data in their quest for funds??
https://www.theaustralian.com.au/higher-education/sacked-professor-peter-ridd-steps-up-push-for-reef-science-scrutiny/news-story/4a2e9134c68eaafea73d5acaf5e8deaa?nk=92206f0f0f531ff32f7590fc1f25c1d3-1527818676
Odd, I gave no indication of my political leanings in my response. YOU, on the other hand, made numerous assumptions and felt that a combination of insult and ad hom attack somehow makes you more convincing.
Spoiler Alert: it doesn't.
I'm curious at this "right humans are left" assertion of yours....care to expand on it? I assume perhaps you'd like something along the lines of Thanos doing his glove thing or perhaps Mister Valentine from the Kingsmen movie?
Ferret
Sic gorgiamus allos subjectatos nunc
Well it's not that odd when you know how right wing, republicans/libertarians/fascists, think and speak. Itâ(TM)s almost always through a lens of over simplification, ignoring inconvenient facts, and slippery slopes.
And again, you made the same argument that I should be out doing some direct physical action to craft my ideal world, but just like you and everyone else who lives in a quasi-democracy I'll talk about my ideal world until there is enough critical mass to bring it to fruition. Until then direct action would only be fighting the state and land one in jail or six feet under.
Nuance brother. Learn it.
Also, while I used pejoratives, my argument was primarily against your broken logic, not as hominem. But conservatives brains break when they perceive any threat to their status, so I see why you froze on the first sentence.