Gemini: A grassland model simulating the role of plant traits for community dynamics and ecosystem functioning. Parameterization and evaluation

► In this study, we develop and evaluate a structure-function-diversity model of grassland ecosystems. ► The model is parameterized from plant functional traits of 13 perennial grass species. ► The model is evaluated on species performance in monoculture and mixture across disturbance and fertility gradients. ► We demonstrate the model ability to simulate species performance and plant community structure.