Understanding and characterizing nestedness in mutualistic bipartite networks

Details Understanding and characterizing nestedness in mutualistic bipartite networks Understanding and characterizing nestedness in mutualistic bipartite networks

2008-09-22

arxiv.org/abs/0809.3681v1

Physics

Physics and Society

oral talk in Computer Physics Conference CCP2008, Brazil

Scientific paper

10.1016/j.cpc.2008.11.007

In this work we present a dynamical model that succesfully describes the organization of mutualistic ecological systems. The main characteristic of these systems is the nested structure of the bipartite adjacency matrix describing their interactions. We introduce a nestedness coefficient, as an alternative to the Atmar and Patterson temperature, commonly used to measure the nestedness degree of the network. This coefficient has the advantage of being based on the robustness of the ecological system and it is not only describing the ordering of the bipartite matrix but it is also able to tell the difference, if any, between the degree of organization of each guild.

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