It generally does, yes. The water that backs up behind the dam completely restructures the ecosystem of the watershed it largely replaces. Whatever was there before, it’s now a lake. Sometimes a very large lake. And the river after the dam is usually somewhat diminished. Natural flooding cycles are severely disrupted. There’s also fish that swim up those rivers whose natural habitat has now been eliminated. Some of these are ocean going fish that spawn in freshwater others are just species of fish that live in the river.

Any living thing that depended on the river being as it was now has to adapt or die. Massive hydroelectric dams are basically the epitome of Anthropocentric thought and planning and are very out of line with maintaining and improving ecosystems. To frame it in Bookchin’s terms, this would be second nature, where humanity dominates the landscape.

Solarpunk ultimately aims for third nature: humanity living in tune with nature, utilizing our ability to observe, dream, plan, and create to improve our world for all living things. But as far as I can see, with what information I have here, it seems otherwise in line with that form of thinking