Key biogeochemical events in the ocean take place in less than a second, are studied in experiments lasting a few hours, and determine cycles that last over seasons or even years. The emphasis on considering all time scales in submodel formulation is new and of interest to all those working in global ocean models and related fields.

Themes in modelling ocean biogeochemical processes.- Global extrapolation.- Fluctuations: a task package for the physicists.- Trophic resolution.- Modelling growth and light absorption in the marine diatom Skeletonema costatum.- Carbon: a phycocentric view.- Towards a general description of phytoplankton growth for biogeochemical models.- Modelling zooplankton.- Microbial processes and the biological carbon pump.- Dissolved organic matter in biogeochemical models of the ocean.- Modelling particle fluxes.- The significance of interannual variability.- Some parametric and structural simulations with a three-dimensional ecosystem model of nitrogen cycling in the North Atlantic euphotic zone.- Data assimilation for biogeochemical models.- An annotated bibliography of marine biological models.- List of participants.