30 Jun 2021

30 Jun 2021

Review status: a revised version of this preprint was accepted for the journal ESSD.

The Southern Ocean RADiolarian (SO-RAD) dataset: a new compilation of modern radiolarian census data

Kelly-Anne Lawler1, Giuseppe Cortese2, Matthieu Civel-Mazens3,4, Helen Bostock5,6, Xavier Crosta7, Amy Leventer8, Vikki Lowe5, John Rogers1, and Leanne K. Armand1 Kelly-Anne Lawler et al.
  • 1Research School of Earth Sciences, The Australian National University, Canberra, ACT, 2601, Australia
  • 2GNS Science, 1 Fairway Drive, Avalon, Lower Hutt 5010, New Zealand
  • 3Graduate School of Integrated Arts and Sciences, Kochi University, Japan
  • 4Geological Survey of Japan, AIST, Tsukuba, Japan
  • 5School of Earth and Environmental Sciences, University of Queensland, Australia
  • 6National Institute of Water and Atmospheric Research (NIWA), Wellington, New Zealand
  • 7Université de Bordeaux, CNRS, EPHE, UMR 5805 EPOC, 33615 Pessac, France
  • 8Geology Department, Colgate University, Hamilton NY, USA

Abstract. Radiolarians (holoplanktonic Protozoa) preserved in marine sediments are commonly used as palaeoclimate proxies for reconstructing past Southern Ocean environments. Generating reconstructions of past climate based on microfossil abundances, such as radiolarians, requires a spatially and environmentally comprehensive reference dataset of modern census counts. The Southern Ocean RADiolarian (SO-RAD) dataset includes census counts for 238 radiolarian taxa from 228 surface sediment samples located in the Atlantic, Indian and southwest Pacific sectors of the Southern Ocean. This compilation is the largest radiolarian census dataset derived from surface sediment samples in the Southern Ocean. The SO-RAD dataset may be used as a reference dataset for palaeoceanographic reconstructions, or for studying modern radiolarian biogeography and species diversity. As well as describing the data collection and collation, we include recommendations and guidelines for cleaning and subsetting the data for users unfamiliar with the procedures typically used by the radiolarian community. The SO-RAD dataset is available to download from (Lawler et al., 2021).

Kelly-Anne Lawler et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on essd-2021-148', Demetrio Boltovskoy, 01 Jul 2021
    • AC1: 'Reply on RC1', Kelly-Anne Lawler, 17 Sep 2021
  • RC2: 'Comment on Lawler et al 2021', Anonymous Referee #2, 27 Jul 2021
    • AC2: 'Reply on RC2', Kelly-Anne Lawler, 17 Sep 2021

Kelly-Anne Lawler et al.

Data sets

Southern Ocean RADiolarian dataset (SO-RAD) Lawler, Kelly-Anne; Cortese, Giuseppe; Civel-Mazens, Matthieu; Bostock, Helen C.; Crosta, Xavier; Leventer, Amy; Lowe, Vikki; Rogers, John; Armand, Leanne K.

Kelly-Anne Lawler et al.


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Short summary
Radiolarians found in marine sediments are used to reconstruct past Southern Ocean environments. This requires a comprehensive modern dataset. The Southern Ocean RADiolarian (SO-RAD) dataset includes radiolarian counts from sites in the Southern Ocean. It can be used for palaeoceanographic reconstructions or to study modern species diversity and abundance. We describe the data collection and include recommendations for users unfamiliar with procedures typically used by the radiolarian community.