The dynamics of populations can be perturbed by sudden events that abruptly increase or decrease population densities. The magnitude and temporal pattern of occurrence of pulsed perturbations may interact with different components of population dynamics. In this presentation, I will explore these interactions by focusing on two kinds of perturbations, (i) pulsed removals of fractions of populations and (ii) pulsed introductions of given numbers of individuals, in different population dynamics scenarios such as resource harvesting, population migration, vaccination, and biological control. These examples highlight that the way a given perturbation intensity is spread over time affects both quantitatively and qualitatively the dynamics of pulsed perturbed populations.