The study of the population dynamics of Mimosa acantholoba var.eurycarpa suggests that this species experiences a negative change in the intensity of some of its vital processes as succession unfolds. Survival, establishment probability and resprouting emerge as the demographic processes that change the most during succession. Conversely, changes in fecundity and tree height are weakly related to successional age. As expected, the population grows almost exclusively during the early successional stages and consists mainly of small individuals. Despite considerable variation in population dynamics between different plots, in general, the population declines rapidly and it is finally medium-sized individuals that persist in the final stages of the population.