Abstract
A food web is a highly complex network which defines prey-predator relationship of species. Understanding the structure and functioning of ecosystem by exploring the network topology has long been a central topic of ecological research. This work focuses on the influence of a restriction arising from the trophic level on the network topology of food webs by investigating an evolutionary model that captures the essential features of real-world networks. The results are in good agreement with empirical data and we present a scenario for the evolution of the network.
