Catchment dynamics refers to the study of the processes and interactions that occur within a river catchment or watershed. This includes the movement and distribution of water, nutrients, sediments, and organic matter within the catchment, as well as the impact of human activities on these processes. Catchment dynamics research often focuses on understanding the hydrological cycle, water quality, erosion and sedimentation, land use changes, and climate change effects within a catchment. By studying catchment dynamics, researchers can better understand and predict the response of catchments to various environmental changes and human activities, and ultimately improve management and conservation efforts.