Biosphere as Human Dominion

Murray Bookchin argues for an ethics in which "humans complement nonhuman beings to produce a developmental whole - not as dominant species but as a supportive one." Can humans be a supportive species while also being a dominant one? The act of willfully supporting nonhumans is an act of domination in the sense of excersing a power over other species that they do not have. Sure, other nonhumans support humans, but they don't take the initiative to do this willfully. Perhaps, humans are obligated to support nonhumans, being a dominant species. Again, it is humans who need to make the recognition of support to all species, and this could be because everything else is within their domain; and in their domain, because humans alone can willfully cause help or harm to the whole. The ability to do this would come from the development of our "second nature" as we evolved into social beings, according to Bookchin. And to agree with what I said about our ability alone to help or harm the whole, Bookchin says our second nature "contains both the danger of tearing down the biosphere and, given a further development of humanity toward an ecological society, the capacity to provide an entirely new ecological dispensation." (pg 468) Whether true or not, perhaps humans need to see the biosphere as their dominion in order to take the steps necessary to preserve it. I am not speaking of a dominion in the sense that we can do anything to whatever lies within it because it belongs to us, but more that it is our responsibility alone to take care of it in order to preserve it for our existence and the existence of everything else within it that is a vital component of its preservation and component of its beauty and uniqeness.