Dian Savitri is an assistant professor at the Faculty of Mathematics and Natural Sciences in the Mathematics study program in the field of applied mathematics at the State University of Surabaya. Her research focuses on mathematical models of population dynamics and dynamic population behavior in an ecosystem. Her dissertation research discusses the prey predator model with competition in the interaction phenomenon of swiftlets and sriti birds. The research was continued in a wider ecosystem, including phenomena in the food chain in the mangrove and seagrass ecosystems and the dynamic behavior of the two ecosystems. The latest research focuses more on the dynamic behavior of pests, and natural enemies and interactions between populations in the mangrove ecosystem. In her current work, Dian introduces the existence of kleptoparasitism behavior in populations that can affect ecosystem stability along with the types of bifurcations or changes that occur in the population.