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BP: Fachverband Biologische Physik

BP 11: Posters: Statistical Physics in Biological Systems (joint with DY)

BP 11.6: Poster

Montag, 11. März 2013, 17:30–19:30, Poster B2

Evolutionary food web model on a set of patches coupled by migration — •Eva Marie Weiel, Korinna T. Allhoff, and Barbara Drossel — Institut für Festkörperphysik, TU Darmstadt

Ecological food webs in a heterogeneous environment can be modelled by a complex network with two different types of connections. The local connections of these "networks on networks" represent the interaction through predation and competition of ecological populations in each habitat. The second type of connections represents migration between the habitats. Understanding how the spatial dimension affects the structure and stability of these complex networks is of large interest in ecological theory. We investigate the emergence, dynamics and interaction of food webs in a small set of patches. The dynamics in each patch is based on the often-cited evolutionary model introduced by Loeuille and Loreau in 2005. In addition to local evolution we include different types of migration between the patches and analyse their influence on the structure of the emerging food webs.