The dust, sand, and soil from the Sahara that lands in South American is an enormous source of nutrients and fertilizer for the Amazon rainforest. It would certainly cause vast changes in how that whole ecosystem operates and the impact it makes in other parts of the world.
The knock on effects of those changes to one of the most important and diverse ecosystems on the planet cannot possibly be completely predicted beforehand.
The knock on effects of those changes to one of the most important and diverse ecosystems on the planet cannot possibly be completely predicted beforehand.