Abstract：
:The networks of predator-prey interactions in ecological systems are remarkably complex, but nevertheless surprisingly stable in terms of long term persistence of the system as a whole. In order to understand the mechanism driving the complexity and stability of such food webs, we developed an eco-evolutionary model in which new species emerge as modifications of existing ones and dynamic ecological interactions determine which species are viable. The food-web structure thereby emerges from the dynamical interplay between speciation and trophic interactions. The proposed model is less abstract than earlier evolutionary food web models in the sense that all three evolving traits have a clear biological meaning, namely the average body mass of the individuals, the preferred prey body mass, and the width of their potential prey body mass spectrum. We observed networks with a wide range of sizes and structures and high similarity to natural food webs. The model networks exhibit a continuous species turnover, but massive extinction waves that affect more than 50% of the network are not observed.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Allhoff KT,Ritterskamp D,Rall BC,Drossel B,Guill Cdoi
10.1038/srep10955subject
Has Abstractpub_date
2015-06-04 00:00:00pages
10955issn
2045-2322pii
srep10955journal_volume
5pub_type
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