--- _id: '3603' abstract: - lang: eng text: 'Classical models of gene flow fail in three ways: they cannot explain large-scale patterns; they predict much more genetic diversity than is observed; and they assume that loosely linked genetic loci evolve independently. We propose a new model that deals with these problems. Extinction events kill some fraction of individuals in a region. These are replaced by offspring from a small number of parents, drawn from the preexisting population. This model of evolution forwards in time corresponds to a backwards model, in which ancestral lineages jump to a new location if they are hit by an event, and may coalesce with other lineages that are hit by the same event. We derive an expression for the identity in allelic state, and show that, over scales much larger than the largest event, this converges to the classical value derived by Wright and Malécot. However, rare events that cover large areas cause low genetic diversity, large-scale patterns, and correlations in ancestry between unlinked loci.' author: - first_name: Nicholas H full_name: Nicholas Barton id: 4880FE40-F248-11E8-B48F-1D18A9856A87 last_name: Barton orcid: 0000-0002-8548-5240 - first_name: Jerome full_name: Kelleher, Jerome last_name: Kelleher - first_name: Alison full_name: Etheridge, Alison M last_name: Etheridge citation: ama: 'Barton NH, Kelleher J, Etheridge A. A new model for large-scale population dynamics: quantifying phylogeography . Evolution; International Journal of Organic Evolution. 2010;64(9):2701-2715. doi:10.1111/j.1558-5646.2010.01019.x' apa: 'Barton, N. H., Kelleher, J., & Etheridge, A. (2010). A new model for large-scale population dynamics: quantifying phylogeography . Evolution; International Journal of Organic Evolution. Wiley-Blackwell. https://doi.org/10.1111/j.1558-5646.2010.01019.x' chicago: 'Barton, Nicholas H, Jerome Kelleher, and Alison Etheridge. “A New Model for Large-Scale Population Dynamics: Quantifying Phylogeography .” Evolution; International Journal of Organic Evolution. Wiley-Blackwell, 2010. https://doi.org/10.1111/j.1558-5646.2010.01019.x.' ieee: 'N. H. Barton, J. Kelleher, and A. Etheridge, “A new model for large-scale population dynamics: quantifying phylogeography ,” Evolution; International Journal of Organic Evolution, vol. 64, no. 9. Wiley-Blackwell, pp. 2701–2715, 2010.' ista: 'Barton NH, Kelleher J, Etheridge A. 2010. A new model for large-scale population dynamics: quantifying phylogeography . Evolution; International Journal of Organic Evolution. 64(9), 2701–2715.' mla: 'Barton, Nicholas H., et al. “A New Model for Large-Scale Population Dynamics: Quantifying Phylogeography .” Evolution; International Journal of Organic Evolution, vol. 64, no. 9, Wiley-Blackwell, 2010, pp. 2701–15, doi:10.1111/j.1558-5646.2010.01019.x.' short: N.H. Barton, J. Kelleher, A. Etheridge, Evolution; International Journal of Organic Evolution 64 (2010) 2701–2715. date_created: 2018-12-11T12:04:11Z date_published: 2010-09-01T00:00:00Z date_updated: 2021-01-12T07:44:36Z day: '01' doi: 10.1111/j.1558-5646.2010.01019.x extern: 1 intvolume: ' 64' issue: '9' month: '09' page: 2701 - 2715 publication: Evolution; International Journal of Organic Evolution publication_status: published publisher: Wiley-Blackwell publist_id: '2780' quality_controlled: 0 status: public title: 'A new model for large-scale population dynamics: quantifying phylogeography ' type: journal_article volume: 64 year: '2010' ...