The following dataset details the taxa of copepods present in a 378 m sediment trap located in the Northeast Scotia Sea, 52.80 degrees S, 40.14 degrees W, bottom depth 3748 m), as part of the Scotia Open Ocean Observatory programme (SCOOBIES, https://www.bas.ac.uk/project/scoobies/). The trap collected from late January to December 2018. With sampling periods ranging from 2 weeks to 1 month. Sediment traps are becoming a useful means of monitoring zooplankton throughout the year in remote locations. Funding: Clara Manno was supported by UK Research and Innovation Future Leaders Fellowships project CUPIDO (MR/T020962/1). Work was carried out as part of the Ecosystems programme at the British Antarctic Survey.

This dataset is referring to 2-year time series of particle flux, as measured by two deep moored sediment traps (P2, P3) located in the Southern Ocean (northern Scotia Sea sector), a globally important region of atmospheric CO2 drawdown containing both naturally iron-fertilised (P3) and iron-limited (P2) regimes. The dataset includes the main biogeochemical flux parameters (such as Bsi, POC and PIC) as well as the specific contribution of each part of the plankton calcifying community (pteropods, foraminifera, coccolithphores and ostracods) to the PIC within a period from April 2009 to February 2011. The dataset allows the estimation of the Carbonate Counter Pump (CCP), which causes an increase in surface ocean CO2 through the calcification and precipitation of carbonate.

Zooplankton faecal pellet abundance, volume and flux were determined from samples collected at three stations in the Scotia Sea, Southern Ocean during cruise JR304. Samples were collected at six depths within the 0 - 400 m epi- to upper mesopelagic using Niskin bottles attached to a CTD unit and were preserved in a formalin-based solution. Fluorescence data were collected during the same deployments. Sampling was performed by C. Liszka and G. Tarling on board RRS James Clark Ross. Sample analysis was performed by C. Liszka at British Antarctic Survey in Cambridge.