The Southern Ocean diatom Chaetoceros debilis is limited in growth by iron and manganese together
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 a...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.905473 2024-09-15T17:47:48+00:00 The Southern Ocean diatom Chaetoceros debilis is limited in growth by iron and manganese together Pausch, Franziska Bischof, Kai Trimborn, Scarlett 2019 text/tab-separated-values, 234 data points https://doi.pangaea.de/10.1594/PANGAEA.905473 https://doi.org/10.1594/PANGAEA.905473 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.905473 https://doi.org/10.1594/PANGAEA.905473 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess Supplement to: Pausch, Franziska; Bischof, Kai; Trimborn, Scarlett; Jesus, Bruno (2019): Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis. PLoS ONE, 14(9), e0221959, https://doi.org/10.1371/journal.pone.0221959 Carbon organic particulate per cell production per cell Carbon/Nitrogen ratio standard deviation co-limitation Diatom Electron transport rate absolute Fe Functional absorption cross sections of photosystem II reaction centers growth Growth rate Irradiance Maximum photochemical quantum yield of photosystem II Mn Particulate organic carbon production Particulate organic carbon content per cell Photosynthesis Phytoplankton growth rate Species trace metals Treatment Type dataset 2019 ftpangaea https://doi.org/10.1594/PANGAEA.90547310.1371/journal.pone.0221959 2024-07-24T02:31:34Z 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. Dataset Antarc* Antarctic Southern Ocean PANGAEA - Data Publisher for Earth & Environmental Science |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Carbon organic particulate per cell production per cell Carbon/Nitrogen ratio standard deviation co-limitation Diatom Electron transport rate absolute Fe Functional absorption cross sections of photosystem II reaction centers growth Growth rate Irradiance Maximum photochemical quantum yield of photosystem II Mn Particulate organic carbon production Particulate organic carbon content per cell Photosynthesis Phytoplankton growth rate Species trace metals Treatment Type |
spellingShingle |
Carbon organic particulate per cell production per cell Carbon/Nitrogen ratio standard deviation co-limitation Diatom Electron transport rate absolute Fe Functional absorption cross sections of photosystem II reaction centers growth Growth rate Irradiance Maximum photochemical quantum yield of photosystem II Mn Particulate organic carbon production Particulate organic carbon content per cell Photosynthesis Phytoplankton growth rate Species trace metals Treatment Type Pausch, Franziska Bischof, Kai Trimborn, Scarlett The Southern Ocean diatom Chaetoceros debilis is limited in growth by iron and manganese together |
topic_facet |
Carbon organic particulate per cell production per cell Carbon/Nitrogen ratio standard deviation co-limitation Diatom Electron transport rate absolute Fe Functional absorption cross sections of photosystem II reaction centers growth Growth rate Irradiance Maximum photochemical quantum yield of photosystem II Mn Particulate organic carbon production Particulate organic carbon content per cell Photosynthesis Phytoplankton growth rate Species trace metals Treatment Type |
description |
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. |
format |
Dataset |
author |
Pausch, Franziska Bischof, Kai Trimborn, Scarlett |
author_facet |
Pausch, Franziska Bischof, Kai Trimborn, Scarlett |
author_sort |
Pausch, Franziska |
title |
The Southern Ocean diatom Chaetoceros debilis is limited in growth by iron and manganese together |
title_short |
The Southern Ocean diatom Chaetoceros debilis is limited in growth by iron and manganese together |
title_full |
The Southern Ocean diatom Chaetoceros debilis is limited in growth by iron and manganese together |
title_fullStr |
The Southern Ocean diatom Chaetoceros debilis is limited in growth by iron and manganese together |
title_full_unstemmed |
The Southern Ocean diatom Chaetoceros debilis is limited in growth by iron and manganese together |
title_sort |
southern ocean diatom chaetoceros debilis is limited in growth by iron and manganese together |
publisher |
PANGAEA |
publishDate |
2019 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.905473 https://doi.org/10.1594/PANGAEA.905473 |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Supplement to: Pausch, Franziska; Bischof, Kai; Trimborn, Scarlett; Jesus, Bruno (2019): Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis. PLoS ONE, 14(9), e0221959, https://doi.org/10.1371/journal.pone.0221959 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.905473 https://doi.org/10.1594/PANGAEA.905473 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.90547310.1371/journal.pone.0221959 |
_version_ |
1810497382555582464 |