>>12651605First of all, it's assumed that the Amazon experienced a significant amount of fires during the Sahara's green period, which likely took a significant toll on the life there. Second of all, the Amazon also gets nutrients from places besides the Sahara.
https://www.nature.com/articles/s43247-020
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>Here we present analyses of Sr-Nd isotopic ratios of a lacustrine sediment core from remote Lake Pata in the Amazon region that encompasses the past 7,500 years before present, and compare these ratios to dust signatures from a variety of sources. We find that dust reaching the western Amazon region during the study period had diverse origins, including the Andean region and northern and southern Africa. We suggest that the Sahara Desert was not the dominant source of dust throughout the vast Amazon basin over the past 7,500 years.Point being this is all ridiculously complex, and it's hilarious to think that we can manipulate one part of it in a major way and not have unexpected consequences.
