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Coccolithophore species fluxes in the Australian and New Zealand sectors of the Subantarctic Zone

Created 23/06/2025

Updated 23/06/2025

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Coccolithophore fluxes were investigated over a one-year period at two sites of the Subantarctic Zone in the Australian and New Zealand Sectors of the Southern Ocean. The samples from the Australian SAZ were retrieved at the SOTS observatory, which lies in the SAZ (near 47°S, 142°E), approximately 500 km south west of Tasmania. SOTS was instrumented with three moored platforms: (i) a surface tower buoy that performs meteorological measurements (the Southern Ocean Flux Station - SOFS); (ii) a surface mixed layer mooring equipped with an automated water sampler) and nutrient, carbon and biological measurement sensors (the Pulse mooring); and (iii) a bottom-tethered deep sediment trap mooring that collects sinking particle fluxes for diverse biogeochemical studies (the SAZ mooring). The samples from New Zealand came from the deep-ocean SAM mooring deployed in Subantarctic waters south east of New Zealand (46°40’S, 178’ 30°E), and was equipped with sediment traps and a suite of sensors. Here, we report the coccolith sinking assemblages captured by sediment traps at ~1000, 2000 and 3800 m depth for a year from August 2011 until July 2012 at the SOTS observatory and a sediment trap at ~1500 m depth for a year from November 2009 until October 2010 at the SAM site. A description of the field experiment, sample treatment, determination of total CaCO3 content, and estimation of coccolith and coccosphere fluxes can be found in Rigual-Hernández et al. (2020a) and Rigual-Hernández et al. (2020b). Data available: two excel files (one for each station) containing sampling dates and depths, relative abundance of coccolith sinking assemblages, and coccolith, coccosphere and total CaCO3 fluxes. Detailed information of the column headings is provided below. Cup – Cup (=sample) number Depth – vertical location of the sediment trap in meters below the surface Mid-point date - Mid date of the sampling interval Duration (days) – number of days the cup was open

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Field Value
Title Coccolithophore species fluxes in the Australian and New Zealand sectors of the Subantarctic Zone
Language eng
Licence Not Specified
Landing Page https://data.gov.au/data/dataset/bdc808e3-f84b-49f0-912c-f809d7fbd158
Contact Point
Australian Ocean Data Network
metadata@aad.gov.au
Reference Period 01/11/2009 - 31/07/2012
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        142.2,
        -47.0
      ],
      [
        142.3,
        -47.0
      ],
      [
        142.3,
        -46.8
      ],
      [
        142.2,
        -46.8
      ],
      [
        142.2,
        -47.0
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Australian Oceans Data Network

Data Source

This dataset was originally found on Australian Oceans Data Network "Coccolithophore species fluxes in the Australian and New Zealand sectors of the Subantarctic Zone". Please visit the source to access the original metadata of the dataset:
https://catalogue.aodn.org.au/geonetwork/srv/eng/csw/dataset/coccolithophore-species-fluxes-in-the-australian-and-new-zealand-sectors-of-the-subantarctic-zo