BEF studies look at how ecosystems react to different levels of species diversity. The DImodels R package helps analyze this relationship by considering species identity, evenness, richness, and interactions. Traditional models often only focus on species richness, but using DI models can give a more accurate picture of how species diversity affects ecosystem functions. DI models can predict ecosystem responses more effectively and reveal hidden patterns in the BEF relationship. By looking at multiple aspects of species diversity, DI models provide a deeper understanding of how ecosystems function.