[shkkmo]

What does that article show? Can you explain how that has any relavance to the impact on global oxygen levels?

Why are you still conflating O2 and CO2?

Edit: You do realize that "Y. Malhi", one of that authors of that paper, is the same "YADVINDER MALHI" who wrote this blog post.

[strainer]

> Why are you still conflating O2 and CO2?

That should be obvious. Any evidence of amazon sequestering carbon is evidence of amazon liberating oxygen. If you cant bear that in mind you have been distracted by the artificial separation proposed here, between "a strong carbon sink" sinking carbon and the respiring of O2, they are very effectively both expressions of the same process.

> one of that authors of that paper, is the same "YADVINDER MALHI" who wrote this blog post

Correct and it puts into stark contrast the co-authors private blog advice that "the net contribution of the Amazon ECOSYSTEM (authors emphasis) to the world's oxygen is effectively zero". That misjudged statement which is even highlighted in the article now, is in plain contradiction to that paper he took part in, which is also about the Amazon ECOSYSTEM and the Amazon can not physically be "a strong carbon sink" and at the same time have zero contribution to the worlds atmospheric oxygen system.

The claim is wrong, and hangs only on the ambiguities of what "effectively zero" could be argued to mean that is in reality documented to be very far from zero indeed.

The Amazon has been known for decades as great "lung" of the planet, SINKING Carbon and RELEASING O2. Malhi has himself taken part in work which describes it "greatly" doing so. If its personal credentials you put faith in you could regard Sir David Attenboroughs describing it the same, for many years, in finished and award winning works, as opposed to a professors conversational web article.

Malhi's advisory 9% figure (that is then subsequently reduced to zero?!) is not even necessarily more final or uncontestable as the supposedly terrible global media outbreak of 20% reports. And since (even that work Mahli took part in reveals) that the amazon is recently in serious flux, such figures are technically speaking conditional.

The point of publicity figure is to be defensible and educate the fact that the Amazon has had and can have major effects on the atmospheres important constituents. That whether it is currently in equilibrium or a great carbon sink or grave carbon emitter - is a very grave matter because by its size and history it is capable of all those things.

[shkkmo]

> they are very effectively both expressions of the same process.

But the effects on global atmospheric composition are not equivalent as has already been explained to you. The fact that you seem to choose to deliberately not understand this does not speak well of you.

> The claim is wrong, and hangs only on the ambiguities of what "effectively zero" could be argued to mean that is in reality documented to be very far from zero indeed.

There are no ambiguities, the caveats of that statement are quite clearly stated in the article.

> Malhi's advisory 9% figure (that is then subsequently reduced to zero?!) is not even necessarily more final or uncontestable as the supposedly terrible global media outbreak of 20% reports.

Nobody ever said it was final or uncontestable (that's not how science works). It is a fairly rough estimation, but even as such it is FAR more accurate and its precision is sufficient for popular discussion.

> The point of publicity figure is to be defensible and educate the fact that the Amazon has had and can have major effects on the atmospheres important constituents. That whether it is currently in equilibrium or a great carbon sink or grave carbon emitter - is a very grave matter because by its size and history it is capable of all those things.

Neither I nor the author dispute the importance of the amazon. What is disputed is the bad science that is being spread by the well-intentioned but misinformed.

Atmospheric O2 levels are not a problem, atmospheric CO2 levels are.

What do you think you are accomplishing by attacking environmental scientists and spreading misinformation? Are you really trying to help spread accurate knowledge about climate change? How does this help with that?

[strainer]

Please I have not attacked the professor at all. I have "attacked" an article which has you calling a statement which in all likelihood originates from the advice of an earth scientist > "bad science" and "mis-information" and has you defending the claim that the amazon ecosystems contribution to atmospheric oxygen "effectively zero" And that practically extends to co2 - any caveats are in fact in contradiction to the professors advice that fires and organisms use up all the produced oxygen. But we've already gone through that and are talking past each other now.