ANALYTIC STUDY OF A PREY-PREDATOR MODEL WITH ALLEE EFFECT Estudio analítico de un modelo predador-presa con efecto Allee

The Allee effect is introduced into intraspecific a nd two-species competitive models. We use phase plane analysis and simulation to investigate the dynamics of these models. Combining simple modeling and simulations, we demonstrate that the Allee effect alone could lead to alternati ve stable states in two-species competitive systems. In such systems, if interspeci fic competition is intense, both species may go extinct even if their populatio n densities are high.