Ooo - good picks! I'd add a few here that are ideologically a fit to what i think Eco is trying to get across as well
Ishmael by Daniel Quinn. A telepathic gorilla shares how human society got to where it is. Really fun read, hits on a lot of the concepts from the Kickstarter page
Biogea by Michel Serres - more of an epitaph of ecology than anything else, it's a short inspirational read
Cannibal Metaphysics - discusses the anthopological implications of the drastically different views of the world for tribes prior to colonial era (and some that exist today).
Think Like a Commoner - dives not so deep but effectively into the lost concept of the commons and how the commons is still around even if the concept seems antiquated.
The Power at the End of The Economy, by brian Massumi - While people believe that 'rational self interest' tends to govern economic matters, Massumi plays with this and pushes the idea that emotional choices have always been the hidden subject for those in economics. I really liked this and it's a fun read.
How Forests Think - this, to me, is basically the ethos of Eco in book form. Totally worth a read.
Hyperobjects: Philosophy and Ecology after the End of the World - a hugely influenctial book for my own creative thinking, the author argues - ehhhhh, let me steal from the amazon page:
hyperobjects show that the end of the world has already occurred in the sense that concepts such as world, nature, and even environment are no longer a meaningful horizon against which human events take place. Instead of inhabiting a world, we find ourselves inside a number of hyperobjects, such as climate, nuclear weapons, evolution, or relativity. Such objects put unbearable strains on our normal ways of reasoning.Insisting that we have to reinvent how we think to even begin to comprehend the world we now live in, Hyperobjects takes the first steps, outlining a genuinely postmodern ecological approach to thought and action.