Long‐term variability of a stochastic forced pelagic ecosystem model

The long‐term natural variability of a pelagic ecosystem model is investigated using a simple numerical model which consists of six state variables: two nutrients, two phytoplankton species, detritus and benthos. For the investigation of natural variability the model is forced with first and second order autoregressive processes and noise. The interannual variability of the system with respect to phytoplankton mortality is investigated in different runs which are integrated over 300 years.