Electronic Journal of Differential Equations, Conference 05 (2000), pp. 81-90. Title: Transient effects of stochastic multi-population models. Authors: Thomas C. Gard (The Univ. of Georgia, Athens, GA, USA) Abstract: We give some estimates for exit probabilities through specific portions of the boundary of bounded subsets of the feasible region for solutions of stochastic population interaction models. These exit probability estimates can indicate initial tendencies for survival or extinction for the modeled populations. When the subset boundaries are given by level curves of multiple Liapunov type functions, the estimates are more tractable. Published October 24, 2000. Math Subject Classifications: 92D25, 60H10. Key Words: multi-population models; stochastic differential equations; transient behavior.