Just a note, the fire management techniques were employed by indigenous people to mimic how the world already worked with natural fires. Your not wrong in saying it was a technology but it was not the cause of the current situation as they did not practice that tech long enough to impact the ecosystems reliance on it.
All the species in that environment already relied oh fires. Small example, sequoia trees who's seeds only germinate after a fire. This evolution occurred millions of years before indigenous peoples where even around. Not to take away from the brilliance of the tech but it was discovered from how the world already worked it did not create a new niche.
> sequoia trees who's seeds only germinate after a fire.
Maybe trees are the real elves - naturally long lives, incredible technology/magic that we barely understand, if we see it at all (e.g. mycorrhizal networks between trees [1]), adaptation and harmony with their environment, etc. The Overstory by Richard Powers is a wonderful exploration of this idea in fiction.
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).
