Hanjo Berressem establishes the notion of a schizoanalytic ecology as the most consistent conceptual spine of Felix Guattari's work. He covers the whole range of Guattari's solo work, as well as the books co-authored with Gilles Deleuze. The core of his argument is developed through a rigorous explication and analysis of Guattari's 'Schizoanalytic Cartographies'. This reveals an ecological ontology developed from key concepts such as the informal diagram, the abstract machine and transversality, which is based on the conceptual complementarity of the world (the given) and its creatures (the giving).