Remove one network edge and see what happens. Then, two… etc. This is the first illustration on Mark BuchananNexus: Small-worlds and the ground-breaking science of networks” 2002 book – Norton, New York (Prelude, page 17), representing a portion of the food web for the Benguela ecosystem, located off the western coast of South Africa (from Peter Yodzis). For a joint review of 3 general books in complex networks, including Barabási‘s “Linked“, Duncan WattsSmall-Worlds” and Buchanan‘s “Nexus” pay a visit into JASSSJournal of Artificial Societies and Social Simulation, ‘a review of three books’ entry by Frédéric Amblard (link).