I'm not sure where have I first stumbled upon this information, but I think it was during my childhood when media was not centered on the rain forests so much. The primary oxygen production on Earth is actually happening in oceans. Here are few articles I found:
Oceans produce ~80% of world's oxygen
Phytoplankton produces 50-85% of atmosphere's oxygen
The Forbes article asserting the Amazon contributes net zero is correct. The link below shows the environmental science to back it up and also adds an important conclusion about our sources of oxygen.
The oxygen levels in the atmosphere are set on million year timescales by the ...
tl;dr - yes, but there are doubts that it will keep being "world's lungs" in the future.
The removal of athmospehric CO2 and the production of oxygen are two sides of the same process, while the former is much easier to estimate and measure. And terrestrial ecosystems play an important role in the CO2 absorption, taking up roughly as much CO2 as ocean ...
I stumbled upon this article today. According to the article, the fires this year are 80% up as compared to the previous year, but only 7% above the 10-year average. The article ascribes the claim to Daniel Nepstad who holds a PhD in Forest Ecology and is the Executive Director of Earth Innovation Institute.
Not all of Brazil is Amazon.
Year 2019 to 26 August, Brazil has had an 80% increase in satellite detected fire spots from the same period in 2018.
For the Amazon portion of Brazil the increase over 2018 was 128%.
The raw data for the whole of Brazil (01 January through 26 August) is:
| Year | Amount |
| 1998 | 39,197 |