ArticleGlobal biogeochemical cycles2022
Manganese Limitation of Phytoplankton Physiology and Productivity in the Southern Ocean.
Article in Global biogeochemical cycles, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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6 citing papers in PubMed, 53 citations in OpenAlex.
- Effect of cellular nutrient economy on the evolution of genome size in phytoplankton.Science advances · 2026Article
- The Evolution of Southern Ocean Net Primary Production in a Changing Climate: Challenges and Opportunities.Global change biology · 2025Article
- Global analysis of ocean phytoplankton nutrient limitation reveals high prevalence of co-limitation.Nature communications · 2023Article
- Phytoplankton responses to dust addition in the Fe-Mn co-limited eastern Pacific sub-Antarctic differ by source region.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Process controlling iron-manganese regulation of the Southern Ocean biological carbon pump.Philosophical transactions. Series A, Mathematical, physical, and engineering sciences · 2023Article
- Manganese Limitation of Phytoplankton Physiology and Productivity in the Southern Ocean.Global biogeochemical cycles · 2022Article
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Authors and funding
3 authors at 3 institutions in 2 countries.
Funding
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Abstract
Although iron and light are understood to regulate the Southern Ocean biological carbon pump, observations have also indicated a possible role for manganese. Low concentrations in Southern Ocean surface waters suggest manganese limitation is possible, but its spatial extent remains poorly constrained and direct manganese limitation of the marine carbon cycle has been neglected by ocean models. Here, using available observations, we develop a new global biogeochemical model and find that phytoplankton in over half of the Southern Ocean cannot attain maximal growth rates because of manganese deficiency. Manganese limitation is most extensive in austral spring and depends on phytoplankton traits related to the size of photosynthetic antennae and the inhibition of manganese uptake by high zinc concentrations in Antarctic waters. Importantly, manganese limitation expands under the increased iron supply of past glacial periods, reducing the response of the biological carbon pump. Overall, these model experiments describe a mosaic of controls on Southern Ocean productivity that emerge from the interplay of light, iron, manganese and zinc, shaping the evolution of Antarctic phytoplankton since the opening of the Drake Passage.
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