2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/80754If one isolated species is supposed to evolve following the logistic mapping, then we are tempted to think that the dynamics of two species can be expressed by a coupled system of two discrete logistic equations. As three basic relationships between two species are present in Nature, namely symbiosis, predator-prey and competition, three different models are obtained. Each model is a cubic two-dimensional discrete logistic-type equation with its own dynamical properties: stationarity, periodicity, quasi-periodicity and chaos. Furthermore, these models could be considered as the basic ingredients to construct more complex interactions in the ecological networks.1 pageAdaptation and Self-Organizing SystemsDynamical SystemsPattern Formation and SolitonsPopulations and Evolutiontext