• European Marine Science
• 2023-2023close
• Research data close
• Other research products close
• BM close
• European Marine Science close

Data were obtained as part of the Bermuda Atlantic Time-series Study (BATS) in order to characterise the downward vertical fluxes of sinking material. The data were collected on board of the R/V Atlantic Explorer, at BATS site (31°40′N; 64°10′W) on a monthly basis, from March 2016 to May 2017, except in March 2017 due to rough weather. Each time, sediment traps (free-drifting cylindrical trap, MultiPITs) were deployed at different depths : 150 m, 200 m and 300 m. They collected sinking particles during 72 hours. The location of the traps were checked periodically during the deployement as precised in BATS protocol. Prior to analyses, " swimmers " (i.e. recognizable zooplankton) were removed by hand under a microscope, to not overestimate fluxes. Sinking biomass was obtained by drying the material at 65°C. Particulate carbon and nitrogen were also measured throughout a CHN analysis. Data were then averaged from three replicates and blank corrected, following the BATS protocol (Steinberg et al., 2001). Finally, data are expressed as a flux in mg/m²/day, mgC/m²/day and mgN/m²/day, respectively for biomass, carbon and nitrogen flux.

Data were obtained as part of the Bermuda Atlantic Time-series Study (BATS) in order to characterise the environmental context of the ecosystem. They were collected on board of the R/V Atlantic Explorer, at BATS site (31°40′N; 64°10′W) on a monthly basis, from March 2016 to May 2017, except in March 2017 due to rough weather. Environmental samples were taken during the day, except in February 2017 when they were taken at night. Environmental data were collected vertically using a SeaBird 911 CTD rosette equipped with temperature (°C), conductivity (mS/cm), fluorescence (RFU), oxygen (µmol/kg) and Photosynthetic Active Radiation (PAR, µE/m²s) sensors. Density (σθ) was calculated from temperature and conductivity. Depth of the Deep Chlorophyll Maximum (DCM, m) was defined as the maximum of the fluorescence profile. Three types of Mixed Layer Depth (MLD, m) were calculated. A seasonal and a depth zone characterisation were obtained from MLD, DCM and density measures. The depth (m) at which the light intensity was equal to 1% of the surface light intensity was also computed.