ES models reflect and concretise the relationships between the main components of the accounting framework (ecosystem condition variables, ES potential, ES demand, ES flow). A general ES model typically consists of two submodels covering "ES potential" and "ES demand", which then together determine "ES flow" (Fig. 3), which directly feeds into the SUTs. Condition accounts should (ideally) cover some of the input variables of the submodel for "ES potential" (not necessarily in the exact format/reslution demanded by the model). Making such links possible is an important research priority for ES model development, as well as ecological monitoring programmes. 

  Part of: La Notte A, Czúcz B, Vallecillo S, Polce C, Maes J (2022) Ecosystem condition underpins the generation of ecosystem services: an accounting perspective. One Ecosystem 7: e81487.