Articles | Volume 15, issue 1
Biogeosciences, 15, 31–49, 2018
https://doi.org/10.5194/bg-15-31-2018

Special issue: The Ocean in a High-CO2 World IV

Biogeosciences, 15, 31–49, 2018
https://doi.org/10.5194/bg-15-31-2018

Research article 03 Jan 2018

Research article | 03 Jan 2018

Distribution of planktonic biogenic carbonate organisms in the Southern Ocean south of Australia: a baseline for ocean acidification impact assessment

Thomas W. Trull et al.

Data sets

Moderate-resolution Imaging Spectroradiometer (MODIS) Aqua Chlorophyll Data NASA Goddard Space Flight Center, Ocean Ecology Laboratory, Ocean Biology Processing Group https://doi.org/10.5067/AQUA/MODIS/L3M/CHL/2014

Moderate-resolution Imaging Spectroradiometer (MODIS) Aqua Particulate Inorganic Carbon Data NASA Goddard Space Flight Center, Ocean Ecology Laboratory, Ocean Biology Processing Group https://doi.org/10.5067/AQUA/MODIS/L3M/PIC/2014

NASA Ocean Biogeochemical Model NASA https://giovanni.gsfc.nasa.gov/giovanni/#service=TmAvMp&starttime=&endtime=&data=NOBM_MON_R2014_coc&variableFacets=dataFieldDiscipline%

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Short summary
We present the first large-scale survey of planktonic biogenic carbonate concentrations south of Australia, accompanied by biogenic silica and particulate organic carbon. These suggest that coccolithophores are largely restricted to subantarctic waters and are present in much lower abundance than in Northern Hemisphere polar waters. Comparison to upper ocean properties suggests that thermal tolerance and competition with diatoms for limiting iron may be as influential as ocean acidification.
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