Dispersion as a survival strategy
  We consider stochastic growth models to represent population subject to catastrophes. We analyze the subject from different set ups considering or not spatial restrictions, whether dispersion is a good strategy to increase the population viability. We find out it strongly depends on the effect of a catastrophic event, the spatial constraints of the environment and the probability that each exposed individual survives when a disaster strikes. 
Valdivino Vargas Junior, F\'abio Prates Machado, Alejandro   Rold\'an-Correa
math.PR