A Separation-of-Timescales Approach to the Coalescent in a Continuous Population

摘要: This article presents an analysis of a model isolation by distance in continuous, two-dimensional habitat. An approximate expression is derived for the distribution coalescence times pair sequences sampled from specific locations rectangular Results are qualitatively similar to previous analyses distance, but account explicitly location samples relative habitat boundaries. A separation-of-timescales approach takes advantage fact that sampling affect only recent coalescent behavior. When population size larger than number generations required lineage cross range, long-term genealogical process reasonably well described Kingman's with time rescaled effective size. affected local dispersal behavior as geometry smaller habitat, deep branches genealogy longer would be expected under standard neutral coalescent, pattern panmictic whose was past.