Coexistence, dispersal and spatial structure in metacommunities: a stochastic model approach

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dc.contributor.authorTejo, Mauricio
dc.contributor.authorQuiñinao, Cristóbal
dc.contributor.authorRebolledo, Rolando
dc.contributor.authorMarquet, Pablo A.
dc.date.accessioned2022-11-30T02:47:02Z
dc.date.available2022-11-30T02:47:02Z
dc.date.issued2021
dc.description.abstractWe propose a stochastic model for interacting species in a metacommunity in order to study the factors affecting the intensity of the competition/colonization trade-off as a coexistence mechanism in metacommunities. We particularly focus on the role of the number of local communities and the number of refuges for the inferior competitor. The stochastic component is associated with the dispersal process and is represented by Poisson random measures. Thus, this stochastic model includes two dynamic scales: a continuous one, which refers to the interactions among species, and a low frequency one, referring to dispersal following a Poisson scheme. We show the well-posedness of the model and that it is possible to study its long-term behavior using Lyapunov exponents; the extinction of a species is associated with a negative slope in the time trajectory of the Lyapunov exponent, otherwise, it is equal to zero. We show that the competition/colonization trade-off is a function of the dispersal rate of the inferior competitor, and that it becomes less intense as the number of local communities increases, while the opposite is true with an increase in the number of refuges for the inferior competitor. We also show that under a priority effect type of scenario, dispersal can reverse priority effects and generate coexistence. Our results emphasize the importance of coexistence mechanisms related to the topology of the system of local communities, and its relationship with dispersal, in affecting the result of competition in local communities.en_ES
dc.facultadFacultad de Cienciasen_ES
dc.file.nameTejo_Coe2021.pdf
dc.identifier.citationTejo, M., Quiñinao, C., Rebolledo, R. et al. Coexistence, dispersal and spatial structure in metacommunities: a stochastic model approach. Theor Ecol 14, 279–302 (2021). https://doi.org/10.1007/s12080-020-00496-1en_ES
dc.identifier.doihttps://doi.org/10.1007/s12080-020-00496-1
dc.identifier.urihttp://repositoriobibliotecas.uv.cl/handle/uvscl/7557
dc.languageen
dc.publisherSpringer
dc.sourceTheoretical Ecology
dc.subjectMETACOMMUNITYen_ES
dc.subjectISLAND BIOGEOGRAPHYen_ES
dc.subjectLOTKA-VOLTERRA MODELen_ES
dc.subjectPOISSON MEASUREen_ES
dc.subjectLYAPUNOV EXPONENTen_ES
dc.subjectTRADE-OFFen_ES
dc.subjectPRIORITY EFFECTen_ES
dc.titleCoexistence, dispersal and spatial structure in metacommunities: a stochastic model approach
dc.typeArticulo
uv.departamentoInstituto de Ingenieria Matematica

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