Pollen flow, seed dispersal and individual reproductive success can be simultaneously estimated from the genotypes of adults and offspring using stochastic models. Using four polymorphic microsatellite loci, gene flow of the wind‐pollinated and wind‐seed‐dispersed dioecious tree species, Fraxinus mandshurica var. japonica , was quantified in a riparian forest, in northern Japan. In a 10.5‐ha plot, 74 female adults, 76 male adu...