ArticlePloS one2019
Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis.
Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.
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Who cites it
5 citing papers in PubMed, 67 citations in OpenAlex.
- 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
- Iron and manganese co-limit the growth of two phytoplankton groups dominant at two locations of the Drake Passage.Communications biology · 2022Article
- Cellular costs underpin micronutrient limitation in phytoplankton.Science advances · 2021Article
- Lab-on-chip analyser for the in situ determination of dissolved manganese in seawater.Scientific reports · 2021Article
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Authors and funding
3 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
In some parts of the Southern Ocean (SO), even though low surface concentrations of iron (Fe) and manganese (Mn) indicate FeMn co-limitation, we still lack an understanding on how Mn and Fe availability influences SO phytoplankton ecophysiology. Therefore, this study investigated the effects of Fe and Mn limitation alone as well as their combination on growth, photophysiology and particulate organic carbon production of the bloom-forming Antarctic diatom Chaetoceros debilis. Our results clearly show that growth, photochemical efficiency and carbon production of C. debilis were co-limited by Fe and Mn as highest values were only reached when both nutrients were provided. Even though Mn-deficient cells had higher photochemical efficiencies than Fe-limited ones, they, however, displayed similar low growth and POC production rates, indicating that Mn limitation alone drastically impeded the cell's performance. These results demonstrate that similar to low Fe concentrations, low Mn availability inhibits growth and carbon production of C. debilis. As a result from different species-specific trace metal requirements, SO phytoplankton species distribution and productivity may therefore not solely depend on the input of Fe alone, but also critically on Mn acting together as important drivers of SO phytoplankton ecology and biogeochemistry.
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