Chlorophyll-a, primary production rates, carbon concentrations and cell counts of coccolithophores, diatoms and microzooplankton measured in water samples from the North Atlantic during the M87/1 cruise in April 2012, supplement to: Daniels, Chris J; Poulton, Alex J; Esposito, Mario; Paulsen, Maria Lund; Bellerby, Richard G J; St John, M; Martin, Adrian Peter (2015): Phytoplankton dynamics in contrasting early stage North Atlantic spring blooms: composition, succession, and potential drivers. Biogeosciences, 12(8), 2395-2409


The Deep Convection cruise repeatedly sampled two locations in the North Atlantic, sited in the Iceland and Norwegian Basins, onboard the RV Meteor (19 March - 2 May 2012). Samples were collected from multiple casts of a conductivity-temperature-depth (CTD) - Niskin rosette at each station. Water samples for primary production rates, community structure, chlorophyll a [Chl a], calcite [PIC], particulate organic carbon [POC] and biogenic silicic acid [BSi] were collected from predawn casts from six light depths (55%, 20%, 14%, 7%, 5% and 1% of incident PAR). Additional samples for community structure and ancillary parameters were collected from a second cast. Carbon fixation rates were determined using the 13C stable isotope method. Water samples for diatom and micro zooplankton counts, collected from the predawn casts, were preserved with acidic Lugol's solution (2% final solution) and counted using an inverted light microscope. Water samples for coccolithophore counts were collected onto cellulose nitrate filters and counted using polarising light microscopy. Water samples for Chl a analysis were filtered onto MF300 and polycarbonate filters and extracted in 90% acetone. PIC and BSi samples were filtered onto polycarbonate filters and analysed using an inductively coupled plasma emission optical spectrometer and a SEAL QuAAtro autoanalyser respectively.

Related Identifier
Metadata Access
Creator Daniels, Chris J; Poulton, Alex J; Esposito, Mario; Paulsen, Maria Lund; Bellerby, Richard G J; St John, M; Martin, Adrian Peter
Publisher PANGAEA - Data Publisher for Earth & Environmental Science
Publication Year 2013
Funding Reference Seventh Framework Programme, 264933
Rights Creative Commons Attribution 3.0 Unported;
OpenAccess true
Language English
Resource Type Supplementary Dataset; Dataset
Format text/tab-separated-values
Size 832 data points
Discipline Earth System Research
Spatial Coverage (-11.001W, 61.500S, -2.500E, 62.834N)
Temporal Coverage Begin 2012-03-25T09:18:00Z
Temporal Coverage End 2012-04-29T03:41:00Z