An individual-based predator-prey model for biological coevolution: Fluctuations, stability, and community structure

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dc.creatorRikvold, Per Arne
dc.creatorSevim, Volkan
dc.date2006-11-07
dc.date2007-04-24
dc.date.accessioned2026-07-07T08:09:34Z
dc.date.available2026-07-07T08:09:34Z
dc.descriptionWe study an individual-based predator-prey model of biological coevolution, using linear stability analysis and large-scale kinetic Monte Carlo simulations. The model exhibits approximate 1/f noise in diversity and population-size fluctuations, and it generates a sequence of quasi-steady communities in the form of simple food webs. These communities are quite resilient toward the loss of one or a few species, which is reflected in different power-law exponents for the durations of communities and the lifetimes of species. The exponent for the former is near -1, while the latter is close to -2. Statistical characteristics of the evolving communities, including degree (predator and prey) distributions and proportions of basal, intermediate, and top species, compare reasonably with data for real food webs.
dc.description28 pages, 18 figures. Significantly expanded discussion of community structure and comparison with real food webs. Phys. Rev. E accepted
dc.identifierhttps://arxiv.org/abs/q-bio/0611023
dc.identifierhttp://arxiv.org/abs/q-bio/0611023
dc.identifierPhys. REv. E 75, 051920 (2007). (17 pages)
dc.identifierdoi:10.1103/PhysRevE.75.051920
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/131577
dc.subjectPopulations and Evolution
dc.subjectStatistical Mechanics
dc.subjectAdaptation and Self-Organizing Systems
dc.titleAn individual-based predator-prey model for biological coevolution: Fluctuations, stability, and community structure
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