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Evolutionary and Ecological Trees and Networks

Hernandez-Garcia, E.; Herrada, E. A.;Rozenfeld, A.F.; Tessone, C.J.; Eguiluz, V.M.; Duarte, C.M.; Arnaud-Haond, S.; Serrao, E.
Nonequilibrium Statistical Mechanics And Nonlinear Physics: XV Conference on Nonequilibrium Statistical Mechanics and Nonlinear Physics (Edited by O. Descalzi, O.A. Rosso and H.A. Larrondo) AIP Conf. Proc. 913, American Institute of Physics 78-83 (2007)

Evolutionary relationships between species are usually represented in phylogenies, i.e. evolutionary trees, which are a type of networks. The terminal nodes of these trees represent species, which are made of individuals and populations among which gene flow occurs. This flow can be represented as a network. In this paper we briefly show some properties of these complex networks of evolutionary and ecological relationships. First, we characterize large scale evolutionary relationships in the Tree of Life by a degree distribution. Second, we represent genetic relationships between individuals of a Mediterranean marine plant, Posidonia oceanica in terms of a Minimum Spanning Tree. Finally, relationships among plant shoots inside populations are represented as networks of genetic similarity.

Also available from Springer http://www.springer.com/physics/book/978-0-7354-0421-2