Environmental fluid mechanics with the focus on fluvial systems (river-flow and estuarine hydrodynamics, aerodynamics of river valleys). River turbulence (field and laboratory experiments). Theoretical, experimental, and numerical research on shallow flows (confluences, lateral shear layers, vegetated shear layers, wakes behind exposed bars and vegetated patches). Field experiments on transport processes (longitudinal dispersion, turbulent diffusion and effects of vegetation). Theoretical and experimental studies in ecohydraulics (phytoplankton, flow effects on fish and invertebrates). Research on morphodynamics processes (flow in meander bends, bed-forms dynamics, and sedimentation in recirculating flows).