Diatom and Dinocyst Production, Composition and Flux from the Annual Cycle Sediment Trap Study in the Barents Sea

This paper presents the diatom and palynomorph data from a sediment trap deployed in northern part of East Barents Sea for an annual cycle August 2017 to 2018. The average monthly fluxes diatoms dinoflagellate cysts photic layer northeastern varies 10.4 × 103 640.8 valves m−2 day−1 0.3 90.0 day−1, respectively. Their are related low irradiance during sea-ice cover period, dominance southward currents, modern climate, nepheloid conditions. Based on redundancy analysis relationship between organic carbon fluxes, covers, seasonal light availability we determined following. First, sea-ice-associated dinocysts exported melting sea ice with two-week delay. Second, appearance freshwater green algae sinking material accumulating March 2018 July is also ice. And third, presence Coscinodiscus radiatus, C. perforatus, Shionodiscus oestrupii Operculodinium centrocarpum species composition throughout year indicates advection Atlantic waters into up 80° N.