I gained my PhD at the Department of Earth Science at Stellenbosch University, South Africa under the supervision of Susanne Fietz. My PhD research focussed on investigating the the relationship between phytoplankton and micronutrients (Trace Metals) in the winter Southern Ocean.
Publications
Superyachts could support satellite ocean colour validation
Robert Brewin, Xuerong Sun, Dirk A. Aurin, Johannes J. Viljoen, Christopher Walsh, Shubha Sathyendranath
Frontiers Remote Sensing, vol. 5, 2024
Climate variability shifts the vertical structure of phytoplankton in the Sargasso Sea
Johannes J. Viljoen, Xuerong Sun, Robert Brewin
Research Square, PREPRINT, 2024 Jan 12
Latitudinal variability and adaptation of phytoplankton in the Atlantic Ocean
R Barlow, T Lamont, J Viljoen, R Airs, R Brewin, G Tilstone, J Aiken, E Woodward, C Harris
Journal of Marine Systems, vol. 239, Elsevier, 2023, p. 103844
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Contact
Johan Viljoen
Postdoctoral Researcher in Biological Oceanography & Marine Biogeochemistry