---
_id: '474'
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.'
acknowledgement: This work has made use of the resources provided by the Edinburgh
  Compute and Data Facility (ECDF). The ECDF is partially supported by the eDIKT initiative.
  NHB is supported in part by EPSRC Grant EP/E066070/1; JK is supported by EPSRC Grant
  EP/E066070/1; and AME is supported in part by EPSRC Grant EP/E065945/1.
article_processing_charge: No
author:
- first_name: Nicholas H
  full_name: Barton, Nicholas H
  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
  last_name: Etheridge
citation:
  ama: 'Barton NH, Kelleher J, Etheridge A. A new model for extinction and recolonization
    in two dimensions: Quantifying phylogeography. <i>Evolution</i>. 2010;64(9):2701-2715.
    doi:<a href="https://doi.org/10.1111/j.1558-5646.2010.01019.x">10.1111/j.1558-5646.2010.01019.x</a>'
  apa: 'Barton, N. H., Kelleher, J., &#38; Etheridge, A. (2010). A new model for extinction
    and recolonization in two dimensions: Quantifying phylogeography. <i>Evolution</i>.
    Wiley-Blackwell. <a href="https://doi.org/10.1111/j.1558-5646.2010.01019.x">https://doi.org/10.1111/j.1558-5646.2010.01019.x</a>'
  chicago: 'Barton, Nicholas H, Jerome Kelleher, and Alison Etheridge. “A New Model
    for Extinction and Recolonization in Two Dimensions: Quantifying Phylogeography.”
    <i>Evolution</i>. Wiley-Blackwell, 2010. <a href="https://doi.org/10.1111/j.1558-5646.2010.01019.x">https://doi.org/10.1111/j.1558-5646.2010.01019.x</a>.'
  ieee: 'N. H. Barton, J. Kelleher, and A. Etheridge, “A new model for extinction
    and recolonization in two dimensions: Quantifying phylogeography,” <i>Evolution</i>,
    vol. 64, no. 9. Wiley-Blackwell, pp. 2701–2715, 2010.'
  ista: 'Barton NH, Kelleher J, Etheridge A. 2010. A new model for extinction and
    recolonization in two dimensions: Quantifying phylogeography. Evolution. 64(9),
    2701–2715.'
  mla: 'Barton, Nicholas H., et al. “A New Model for Extinction and Recolonization
    in Two Dimensions: Quantifying Phylogeography.” <i>Evolution</i>, vol. 64, no.
    9, Wiley-Blackwell, 2010, pp. 2701–15, doi:<a href="https://doi.org/10.1111/j.1558-5646.2010.01019.x">10.1111/j.1558-5646.2010.01019.x</a>.'
  short: N.H. Barton, J. Kelleher, A. Etheridge, Evolution 64 (2010) 2701–2715.
corr_author: '1'
date_created: 2018-12-11T11:46:40Z
date_published: 2010-09-01T00:00:00Z
date_updated: 2025-09-30T09:50:22Z
day: '01'
department:
- _id: NiBa
doi: 10.1111/j.1558-5646.2010.01019.x
external_id:
  isi:
  - '000281636400017'
intvolume: '        64'
isi: 1
issue: '9'
language:
- iso: eng
month: '09'
oa_version: None
page: 2701 - 2715
publication: Evolution
publication_status: published
publisher: Wiley-Blackwell
publist_id: '2780'
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'A new model for extinction and recolonization in two dimensions: Quantifying
  phylogeography'
type: journal_article
user_id: 317138e5-6ab7-11ef-aa6d-ffef3953e345
volume: 64
year: '2010'
...