This volume comprises invited contributions on important aspects of plant-animal interactions in Mediterranean-type ecosystems, which was the subject of the Sixth International Conference on Mediterranean Climate Ecosystems, held in Crete (Greece), from September 23 to 27, 1991. The subject of plant-animal interactions is fundamental to an understanding of the structure and the function of the Mediterranean-type ecosystems and their rational management. All five regions of the world with a Mediterranean climate are represented: the Mediterranean basin sensu lato, California, Chile, South Africa, Australia.