The study of the diapause functional trait has This study is a proof of concept that the diapause functional trait needs to be taken into account if one wants to have a more realistic representation of a highly seasonal environment. The carbon accumulation enables the survival of metazoans functional species bigger than 1000µm in an oligotrophic environment. By using a C:N ratio to infer the lipid concentration of an individual in association with specific thresholds of that ratio, we were about to reproduce a diapause dynamic comparable of the one observed for real life species found in the studied area. With the survival of these species, we were able to observe a change into the phenology of some functional phytoplankton species. Via a top-down control over their functional zooplankton species, they were enabled to exhibit a proper secondary fall bloom.