@HeavenlyPossum the first study I saw on this, in the early 90s, excited me no end, for its demolition of the racist myth of "untouched wilderness." Now it excites me for a new reason. If the forest could be managed once, maybe we can do it again. It offers hope for the areas now converted to relatively bereft savannah, and even to places like the Sahara, which with enough management maybe could be another Amazon.