During several cruises, mesozooplankton samples were collected using vertical hauls of a Multinet Midi (0.25m2 net opening, five nets, 200µm mesh). Samples were formaldehyde preserved (4% in seawater solution), scanned on a Epson V750 flatbed scanner, processed using the Zooprocess macro set (Gorsky et al. 2010) and archived and taxonomically sorted using the Ecotaxa web application (https://ecotaxa.obs-vlfr.fr/). For the reported dataset, image data classified within the larger taxon Copepoda and shallower than 100m were extracted, biomass calculated according to Lehette & Hernandez-Leon 2009, aggregated and are here reported as integrated abundance (ind /m2) and biomass (mg DW / m2).