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- 2024 CSDMS meeting-103 + (Coastal foredunes are dynamic ecogeomorphi … Coastal foredunes are dynamic ecogeomorphic landforms that provide increased resilience for both natural habitats and developed communities. Despite their dynamic nature, dunes can be stabilized with vegetation and are therefore an adaptable nature-based solution that can be utilized for flood risk management. However, coastal habitats are rapidly changing and require modeling support to understand the effectiveness of vegetated dunes under changing environmental conditions. Most existing dune morphology models incorporate vegetation implicitly, using percent cover or plant height to affect sediment accretion and erosion, rather than explicitly simulating ecological processes such as mortality and dispersal. A coupled modeling approach that integrates process-based dune and vegetation models is necessary to better understand plant-sediment-water interactions and manage coastal dune systems. Through this work, we demonstrate the coupling of AeoLiS, a process-based aeolian sediment transport model with GenVeg, a generalized vegetation model under development in Landlab and parameterized with growth, functional morphology, and sand accretion of native and non-native plant species from a common garden experiment in Nehalem Bay State Park, Oregon. This work highlights how vegetation morphology affects dune building and resilience to better inform dune management and restoration actions.m dune management and restoration actions.)
