Stephen P.

I do believe that humans act as a keystone species. I think if humans were removed there would be a great shift in all of the ecosystems that we affect. Keystone species defined is a species that has a disproportionate affect on its environment compared to its abundance. I have no doubt that we have affected more ecosystem functions than would typically be affected and if, by chance, we were removed or reduced to a point where our affect is lessoned, there would be significant changes in the way the environment around us functions.