We thought the Amazon got the essential nutrient phosphorus from Saharan dust. Now it appears it mainly comes from forest fires and people burning wood
Source:
https://www.newscientist.com/article/2211699-the-amazon-rainforest-depends-on-fires-in-africa-for-a-vital-nutrient/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home