Modeling the dynamics of interacting species (or populations) is a long standing problem in sciences which, in the recent years, has attracted a lot of physicists working in statistical physics. The similarities and differences between models of dynamics of population and usual statistical...

A model describing the evolution of a sexual population in a selective environment is presented. The population is composed of individuals each characterized by its phenotype and age. Within the standard Monte Carlo simulation technique, we calculate the time dependence of the average fitness,...

We propose a model describing the colonization process of empty ecological niches. The members of the population are characterized by a single trait (phenotype). The fitness of an individual is measured as the difference between the value of its trait and the optimal phenotype characterizing the...

Presented is a simple model, based on computer simulations, of a population colonizing an adjacent habitat with different living conditions. Members of the population are characterized (apart from their positions on the lattice) by a single feature—a qualitative trait (phenotype). Its...

A model of a system of populations (metapopulation) is presented in which a population is characterized by a mean phenotype (or equivalently a continuous character) averaged over all individuals belonging to the population. The populations interact by exchanging genetic information (gene flow)...

Evolution of a population subject to changing external conditions is studied. We show that the tendency to follow the climate is stronger than the ability to adapt to worsening conditions.

We introduce a model of a large, sexual, population in which partners for reproduction are chosen randomly, without any bias. This large population is composed of two groups of local populations living in different environments and being in contact. We propose a dynamic equation describing, like...