ON THE STABILITY OF COEXISTENCE ON A FINI TE HABITAT IN THE COMPETINGPOPULATIONS MODELS

The problem of coexistence on a finite habitat of two competing ecolog ically equivalent populations has been considered. The Lotka-Volterra type system can be reduced in the vicinity of bifurcation to single Fi sher type equation. The wave front solution of this equation is unstab le. The obtained analytical results demonstrate that after an exponent ially long delay one of species occupies the entire habitat in a catas trophic mode. The links with the problem of hybrid zone movement are d escribed.