Parlons Sciences

Visiit from Prof. Dr. Andrés Vargas Luna, Dept. de Ingeniería Civil, from the Universidad Javeriana, Colombie.

Modelling the effects of vegetation on river morphodynamic processes.

Abstract : Alluvial rivers are shaped by the constant interplay of flow discharge, sediment dynamics, and vegetation. Vegetation alters flow resistance, sediment transport, and ultimately the morphology of river channels. Predicting how rivers respond to natural variability or human interventions has long challenged researchers across disciplines, and vegetation adds yet another layer of complexity.

Numerical and physical models have become indispensable tools for understanding the underlying processes, exploring dynamic interactions and predicting responses. However, their application raises new questions about how to capture the living nature of rivers in practice.

In this talk, Professor Vargas-Luna will share insights from his research on the effects of vegetation on river morphodynamics, combining field observations, laboratory experiments, and numerical simulations. The presentation will not only highlight key advances but also reflect on the limitations of current approaches—inviting students and researchers to engage with the exciting challenge of modelling rivers as evolving, living systems.