Szukana fraza: [Abstract = "In a discrete Lotka\-Volerra model, the set of points where a population remains unchanged over one generation is a hyperplane. Examining the relative position of these hyperplanes, we give sufficient conditions for a group of species to drive another species to extinction. Further using these hyperplanes, we find necessary and sufficient conditions where every \[omega\]\-limit point of the model has at least one species missing."]