Séminaire Ecobio - Loïc Marrec (University of Bern, Institute of Ecology and Evolution)

No environment is constant over time, and environmental fluctuations impact the outcome of evolutionary dynamics. Survival of a population not adapted to some environmental conditions is threatened unless a mutation rescues it, an eco-evolutionary process termed evolutionary rescue. I investigate evolutionary rescue in an environment that fluctuates between a favorable state, in which the population grows, and a harsh state, in which the population declines. Because I find that the type of population growth is essential in assessing the fate of a population, I discuss the main current methods for inferring growth parameters from curve data. I identify their weaknesses, explain why fitting growth data from deterministic models can sometimes poorly estimate growth parameters, and finally attempt to develop an accurate inference method.