Published January 27, 2025 | Version v1
Dataset Open

Winter phytoplankton pigment concentrations measured by HPLC in the upper 150m of the Indian Southern Ocean along the 30°E transect (GEOTRACES GIpr07) during 2017

Authors/Creators

  • 1. University of Exeter Cornwall Campus
  • 2. ROR icon Stellenbosch University

Description

Depth profiles of phytoplankton photosynthetic pigment concentrations were collected during the Winter 2017 scientific cruise from June to July 2017 on board the SA Agulhas II in the Indian sector of the Southern Ocean along the 30°E longitude between South Africa and Antarctica. Discrete seawater samples, for chlorophyll-a and accessory pigment analysis, were taken at depths from 10-150m from Niskin bottles on a CTD rosette. Filtered samples were later analysed by High-Performance Liquid Chromatography (HPLC) at Laboratoire d'Océanographie de Villefranche (LOV – CNRS) according to Ras et al. 2008 (doi:10.5194/bg-5-353-2008).

This data is related to the publication by Viljoen et al. (2025): Winter dynamics of phytoplankton and micronutrients in the Southern Ocean in JGR Oceans - https://doi.org/10.1029/2025JC022431.

Phytoplankton community structure determined via CHEMTAX analyses of pigment concentrations can be found in related repository at https://doi.org/10.5281/zenodo.6615070 and detailed methods in the related publication by Viljoen et al. (2025).

 

Notes

The work leading to these results received funding from the National Research Foundation (NRF), South Africa, under the South African National Antarctic Programme (SANAP), grant numbers 93072, 110731, and SANCOP, grant number 91313, awarded to S. Fietz. J.J. Viljoen acknowledges funding from NRF through a Masters Innovation Scholarship and financial assistance through a PhD NRF grant-linked bursary through the South African National Antarctic Programme, grant number 110731. We thank Captain Knowledge Bengu and the crew of the SA Agulhas II for their support. We furthermore thank chief scientist Marcello Vichi, UCT-Oceanography, and all the cruise participants of the Winter 2017 scientific voyage.

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Additional details

Related works

Is referenced by
Journal article: 10.1029/2025JC022431 (DOI)
Is supplement to
Preprint: 10.22541/essoar.173884384.49518335/v1 (DOI)

Funding

National Research Foundation
110731
National Research Foundation
230529111300