Fixation and Ancestry of competing species

growing on a rugged front

Sherry Chu, Jordan Horowitz

Daniel Beller & David Nelson

Outline

I.      Range Expansion: Bacteria growing into new environment; models with and without a rough front

II.     Coalescence of paths governs diversity and close ancestry

III.   Extinction on a rough front is distinct  from directed percolation

IV.    Morphologies of growing fronts governed by relevant parameters

V.    Deterministic growth profiles from seeds on an undulating substrate

VI.  Summary

Next (Range Expansion) Outline Range Expansions Coalescence Extinction Morphology Deterministic growth Summary