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UID:20250703T095334EDT-0172klVhuA@132.216.98.100
DTSTAMP:20250703T135334Z
DESCRIPTION:The effects of a weak selection pressure in a spatially structu
 red population.\n\nOne of the motivations for the introduction of the Fish
 er-KPP equation was to model the wave of advance of a favourable (genetic)
  type in a population distributed over some continuous space. This model r
 elies on the fact that reproductions occur very locally in space\, so that
  if we assume that individuals can be of two types only\, the drift term m
 odelling the competition between the types is of the form sp_{t\,x}(1-p_{t
 \,x}). Here\, s is the strength of the selection pressure and p_{t\,x} is 
 the frequency of the favoured type at location x and time t. However\, lar
 ge-scale extinction-recolonisation events may happen at some nonnegligible
  frequency\, potentially disturbing the wave of advance. In this talk\, we
  shall address and compare the effect of weak selection in the presence or
  absence of occasional large-scale events\, based on a model of evolution 
 in a spatial continuum called the spatial Lambda-Fleming-Viot process. Thi
 s is a joint work with Alison Etheridge and Feng Yu.\n
DTSTART:20171101T140000Z
DTEND:20171101T150000Z
LOCATION:Room 1205\, Burnside Hall\, CA\, QC\, Montreal\, H3A 0B9\, 805 rue
  Sherbrooke Ouest
SUMMARY:Amandine Veber\, Ecole Polytechnique Paris
URL:/mathstat/channels/event/amandine-veber-ecole-poly
 technique-paris-282279
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