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SAIMOS - Biological and Flow Cytometry data collected from CTD stations in South Australia, in September 2021

Created 13/03/2025

Updated 13/03/2025

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Flow cytometry data was collected in September 2021, in waters off South Australia. The general purpose of the study is to be able to establish background knowledge on the ecosystem on the continental shelf of South Australia and the impact of upwelling/saline outflow events on microbial communities to ultimately develop a biogeochemical model of the region. Sampling was carried out during cruises conducted on board the RV Ngerin as part of the Southern Australian Integrated Marine System (SAIMOS). During each cruise, the physical, chemical and biological properties of the chlorophyll fluorescence maximum (DCM) layer were investigated. Flow cytometry data has been collected for picophytoplankton, bacteria and viruses. Six main stations have been sampled over the course of the study, five are located on the 100 m isobath, i.e. RS (35.508S, 136.278E), B2 (35.418S, 136.148E), B3 (35.258S, 136.048E), SAM2CP/B4 (35.168S, 135.418E) and SAM5CB/B5 (35.008S, 135.198E), and one from an offshore station (B1; 36.188S, 136.178E) located southwest of Kangaroo Island. Note that combining the distances between stations (14–25 nautical miles), the average component of the current velocity at middepth along the shelf (0.01 m s21) and the average speed of the vessel (i.e. 9 knots) indicate that different water masses were sampled at each station. Additional samples have on occasion been collected from the National Reference Station (NRS) at Kangaroo Island (35.832S, 136.447E) and the SA Spencer Gulf Mouth Mooring (SAM8SG, 35.25S, 136.690E), where the saline outflow occurs. Since July 2019, sampling has also been conducted at "Gulf" sites: Upper Spencer Gulf (USG) and Gulf St Vincent (GSV), with the original sites identified as "Shelf" sites.

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Title SAIMOS - Biological and Flow Cytometry data collected from CTD stations in South Australia, in September 2021
Language eng
Licence Not Specified
Landing Page https://devweb.dga.links.com.au/data/dataset/d1e785d8-7c68-463f-863e-5a028fdb9e1d
Contact Point
CSIRO Oceans & Atmosphere
mark.doubell@sa.gov.au
Reference Period 14/09/2021 - 16/09/2021
Geospatial Coverage
Map data © OpenStreetMap contributors
{
  "coordinates": [
    [
      [
        135.0,
        -35.9
      ],
      [
        136.9,
        -35.9
      ],
      [
        136.9,
        -34.9
      ],
      [
        135.0,
        -34.9
      ],
      [
        135.0,
        -35.9
      ]
    ]
  ],
  "type": "Polygon"
}
Data Portal Data.gov.au