Influence of invasion on natural selection in dispersal-structured populations

David Navidad Maeso, Marco Patriarca and Els Heinsalu

Physica A: Statistical Mechanics and its Applications, 2022, vol. 598, issue C

Abstract: We investigate how initial and boundary conditions influence the competition dynamics and outcome in dispersal-structured populations. The study is carried out through numerical modeling of the heterogeneous Brownian bugs model, in which individuals are characterized by diversified diffusion coefficients and compete for resources within a finite interaction range. We observed that if instead of being distributed randomly across the domain the population is initially localized within a small region, the dynamics and the stationary state of the system differ significantly. The outcome of the natural selection is determined by different competition processes, fluctuations, and spreading of the organisms.

Keywords: Brownian bugs model; Dispersal-structured populations; Natural selection; Competition; Population dynamics (search for similar items in EconPapers)
Date: 2022
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:598:y:2022:i:c:s0378437122002977

DOI: 10.1016/j.physa.2022.127389

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