Winter dynamics of phytoplankton and micronutrients in the Southern Ocean

Johannes J Viljoen, Ryan Cloete, Raïssa Philibert, Alexander Hayward, Ole Valk, Jean Loock, Natasha Rene Van Horsten, Héì Ene Planquette, Eva Bucciarelli, Geraldine Sarthou, Alakendra N Roychoudhury, Susanne Fietz

ESS Open Archive, 2025

Phytoplankton iron limitation in the Atlantic Southern Ocean driven by seasonal mixed-layer dynamics

Asmita Singh, Sandy J. Thomalla, Susanne Fietz, Saumik Samanta, Thato N. Mtshali, Alakendra N. Roychoudhury, Johannes J. Viljoen, Thomas J. Ryan-Keogh

Limnology and Oceanography Letters, 2025

Simulating vertical phytoplankton dynamics in a stratified ocean using a two-layered ecosystem model

Qi Zheng, Johannes J. Viljoen, Xuerong Sun, Žarko Kovač, Shubha Sathyendranath, Robert J. W. Brewin

Biogeosciences, vol. 22(13), 2025

Climate variability shifts the vertical structure of phytoplankton in the Sargasso Sea

Johannes J. Viljoen, Xuerong Sun, Robert J. W. Brewin

Nature Climate Change, 2024

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

Generating open-source 3D phytoplankton models by integrating photogrammetry with scanning electron microscopy

X. Sun, R.J.W. Brewin, C. Hacker, J.J. Viljoen, M. Li

Frontiers in Microbiology, vol. 15, 2024, p. 1429179

Revisiting the relationship between surface and column-integrated chlorophyll-a concentrations in the Biogeochemical-Argo and satellite era

Ella Poppy Tanner, Harry Ewin, Johannes J. Viljoen, Robert J. W. Brewin

Frontiers in Remote Sensing, vol. 5, 2024

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

Links between the phytoplankton community composition and trace metal distribution in summer surface waters of the Atlantic southern ocean

Johannes J Viljoen, Ian Weir, Susanne Fietz, Ryan Cloete, Jean Loock, Raissa Philibert, Alakendra N Roychoudhury

Frontiers in Marine Science, vol. 6, Frontiers Media SA, 2019, p. 295

Phytoplankton response in growth, photophysiology and community structure to iron and light in the Polar Frontal Zone and Antarctic waters

Johannes J Viljoen, Raïssa Philibert, Natasha Van Horsten, Thato Mtshali, Alakendra N Roychoudhury, Sandy Thomalla, Susanne Fietz

Deep Sea Research Part I: Oceanographic Research Papers, vol. 141, Elsevier, 2018, pp. 118--129