Diffusion plays an unusual role in ecological quasi-neutral competition in metapopulations

Autor:	Pires, Marcelo A., Crokidakis, Nuno, Queirós, Silvio M. Duarte
Rok vydání:	2020
Předmět:	Quantitative Biology - Populations and Evolution Physics - Physics and Society
Zdroj:	Nonlinear Dynamics 103, 1219 (2021)
Druh dokumentu:	Working Paper
DOI:	10.1007/s11071-020-06105-4
Popis:	We investigate the phenomenology emerging from a 2-species dynamics under the scenario of a quasi-neutral competition within a metapopulation framework. We employ stochastic and deterministic approaches, namely spatially-constrained individual-based Monte Carlo simulations and coupled mean-field ODEs. Our results show the multifold interplay between competition, birth-death dynamics and spatial constraints induces a nonmonotonic relation between the ecological majority-minority switching and the diffusion between patches. This means that diffusion can set off birth-death ratios and enhance the preservation of a species. Comment: 6 figures, 10 pages, to appear in Nonlinear Dynamics
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2011.08967 Zobrazit plný text záznamu View this record from Arxiv