Previous studies have shown that wave height attenuation positively correlates with the standing biomass of saltmarshes meadows (Maza et al., 2022) highlighting the crucial role played by this variable that can be used to estimate the ecosystem wave damping capacity without using calibration coefficients. In addition, this variable has been already characterized for many ecosystems and it can be estimated by aerial images and remote sensing techniques. However, this new approach has not been extended to conditions where waves and currents act simultaneously. To further explore this new approach based on the ecosystem standing biomass, a new set of experiments using real vegetation with contrasting morphology and biomechanical properties, and subjected to different combinations of waves and currents, is proposed. The obtained standing biomass-attenuation relationship will help to quantify the expected coastal protection provided by different vegetated ecosystems under the combined effect of waves and currents.
