I would like to push back in the spirit of inquiry: ecosystems surrounding rivers that are dammed are shaped over millions of years by the presence of an estuar

I would like to push back in the spirit of inquiry: ecosystems surrounding rivers that are dammed are shaped over millions of years by the presence of an estuary, and then modified nigh irrevocably by a few years of human intervention. That is to say, even after the destruction of the damn, the landscape will be permanently affected, and by extension the ecosystem. I can see human adoption (and modifcation) of natural annual burn patterns having a similar effect. We have a habit in the West of undue skepticism of indigenous peoples' agency and ability (see: 100 years of Egyptologists denying that Egyptians actually built their ancient structures).