Nitrogen, Phytoplankton, Zooplankton, Detritus
Run the model with Nitrogen, Phytoplankton, Zooplankton, and Detritus as components. Compare the model results with those using fewer components.
With zooplankton and detritus switched on at the same time, the concepts are still the same, it is just adding complexity simultaneously. In this case, phytoplankton grow and use up nutrients. Phytoplankton are eaten by zooplankton. The biomass left over from “sloppy feeding” turns into detritus. Zooplankton die and turn into detritus. Detritus remineralizes and turns back into nitrogen, completing the cycle.