 Extinction threshold and large population limit of a plant metapopulation model with recurrent extinction events and a seed bank componentApolline Louvet Theoretical Population Biology, 2022, vol. 145, issue C, 22-37 Abstract: We introduce a new model for plant metapopulations with a seed bank component, living in a fragmented environment in which local extinction events are frequent. This model is an intermediate between population dynamics models with a seed bank component, based on the classical Wright–Fisher model, and Stochastic Patch Occupancy Models (SPOMs) used in metapopulation ecology. Its main feature is the use of “ghost†individuals, which can reproduce but with a very strong selective disadvantage against “real†individuals, to artificially ensure a constant population size. We show the existence of an extinction threshold above which persistence of the subpopulation of “real†individuals is not possible, and investigate how the seed bank characteristics affect this extinction threshold. We also show the convergence of the model to a SPOM under an appropriate scaling, bridging the gap between individual-based models and occupancy models. Keywords: Wright–Fisher model; Seed-bank; Extinction/recolonization; Metapopulation; Stochastic Patch Occupancy Model; Percolation (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:thpobi:v:145:y:2022:i:c:p:22-37 DOI: 10.1016/j.tpb.2022.02.003 Access Statistics for this article Theoretical Population Biology is currently edited by Jeremy Van Cleve More articles in Theoretical Population Biology from Elsevier |
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