Vertical mass and momentum transport in open-channel flows with submerged vegetations

► We investigated turbulence characteristics in vegetated open-channel flows using PIV. ► We examined changes in the time-mean concentration field by using LIF measured data. ► Identification of coherent structure present in the whole plane. ► We examined changes in the scalar flux by PIV-LIF measurements. ► We calculated the vertical turbulent diffusivity from PIV-LIF measured data.