Despite being oligotrophic during a major part of the year, the Arctic is characterised by an acute pulsatile primary production (OTHERS \cite{Arrigo_2012}\cite{Tremblay_2012,Tremblay}. This system has an environmental bottom-up control that regulates the intensity of the primary production \cite{Tremblay_2015} as well as the main marine communities dynamics. Even before the spring retreat of the sea ice, the primary production already starts within and under the ice \cite{Tremblay_2012}\cite{Ji_2012}\cite{Leu_2015}. When the sea ice melts, the ica-algea will sink, forming a significant flux of biomass into the water column via the zooplankton grazing \cite{Michel_1996} and also towards the depth and the benthic communities \cite{Boetius_2013}. Shortly after the retreat of the ice, we usually observe a bloom of centric diatoms that will last until the depletion of the surface nutrients. Later on the year, when the surface water nutrients will be depleted we can see in some regions the occurrence of a Subsurface Chlorophyll Maximum (SCM) towards the nutricline \cite{Martin_2010,Martin_2013}. Finally, the primary production stops as soon as the ice forms back in winter. Then, throughout the year we will see a succession of phytonplankton communities dominated by different species \cite{Martin_2010} of which dynamic can vary according to the latitude \cite{Leu_2011}. Furthermore, this community evolution characterises the switch from Diatoms dominated new primary production to a Micromonas/micro-zooplankton dominated recycled/heterotrophic production (see \citealt{Wassmann_2011} figure 6A). Then, by being at the heart of the carbon biogeochemical cycle, having accurate (or at least more realistic) estimation of the biological pump related to this community dynamic in the Arctic ocean is essential in order to set relevant carbon release threshold policies.