Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis
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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ftawi:oai:epic.awi.de:51550 2024-09-15T17:45:53+00:00 Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis Pausch, Franziska Bischof, Kai Trimborn, Scarlett 2019-09-19 https://epic.awi.de/id/eprint/51550/ https://hdl.handle.net/10013/epic.f1886320-5827-425c-99d8-cfbb52ce3924 unknown Pausch, F. orcid:0000-0002-4207-1304 , Bischof, K. and Trimborn, S. orcid:0000-0003-1434-9927 (2019) Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis , PLOS One . doi:10.1371/journal.pone.0221959 <https://doi.org/10.1371/journal.pone.0221959> , hdl:10013/epic.f1886320-5827-425c-99d8-cfbb52ce3924 EPIC3PLOS One Article isiRev 2019 ftawi https://doi.org/10.1371/journal.pone.0221959 2024-06-24T04:23:24Z 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. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) PLOS ONE 14 9 e0221959 |
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Open Polar |
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Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center) |
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ftawi |
language |
unknown |
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 |
Article in Journal/Newspaper |
author |
Pausch, Franziska Bischof, Kai Trimborn, Scarlett |
spellingShingle |
Pausch, Franziska Bischof, Kai Trimborn, Scarlett Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis |
author_facet |
Pausch, Franziska Bischof, Kai Trimborn, Scarlett |
author_sort |
Pausch, Franziska |
title |
Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis |
title_short |
Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis |
title_full |
Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis |
title_fullStr |
Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis |
title_full_unstemmed |
Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis |
title_sort |
iron and manganese co-limit growth of the southern ocean diatom chaetoceros debilis |
publishDate |
2019 |
url |
https://epic.awi.de/id/eprint/51550/ https://hdl.handle.net/10013/epic.f1886320-5827-425c-99d8-cfbb52ce3924 |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
EPIC3PLOS One |
op_relation |
Pausch, F. orcid:0000-0002-4207-1304 , Bischof, K. and Trimborn, S. orcid:0000-0003-1434-9927 (2019) Iron and manganese co-limit growth of the Southern Ocean diatom Chaetoceros debilis , PLOS One . doi:10.1371/journal.pone.0221959 <https://doi.org/10.1371/journal.pone.0221959> , hdl:10013/epic.f1886320-5827-425c-99d8-cfbb52ce3924 |
op_doi |
https://doi.org/10.1371/journal.pone.0221959 |
container_title |
PLOS ONE |
container_volume |
14 |
container_issue |
9 |
container_start_page |
e0221959 |
_version_ |
1810493804769181696 |