Interactions of Bioactive Trace Metals in Shipboard Southern Ocean Incubation Experiments
In the Southern Ocean, it is well‐known that iron (Fe) limits phytoplankton growth. Yet, other trace metals can also affect phytoplankton physiology. This study investigated feedbacks between phytoplankton growth and dissolved Fe, manganese (Mn), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), and...
Published in: | Limnology and Oceanography |
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2023
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Online Access: | https://digitalcommons.odu.edu/oeas_fac_pubs/473 https://doi.org/10.1002/lno.12290 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1484/viewcontent/Chappell_2023_InteractionsofBioactiveTraceMetalsinShipboardOCR.pdf |
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ftolddominionuni:oai:digitalcommons.odu.edu:oeas_fac_pubs-1484 2023-12-10T09:42:39+01:00 Interactions of Bioactive Trace Metals in Shipboard Southern Ocean Incubation Experiments Burns, Shannon M. Bundy, Randelle M. Abbott, William Abdala, Zuzanna Sterling, Alexa R. Chappell, P. Dreux Jenkins, Bethany D. Buck, Kristen N. 2023-01-01T08:00:00Z application/pdf https://digitalcommons.odu.edu/oeas_fac_pubs/473 https://doi.org/10.1002/lno.12290 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1484/viewcontent/Chappell_2023_InteractionsofBioactiveTraceMetalsinShipboardOCR.pdf unknown ODU Digital Commons https://digitalcommons.odu.edu/oeas_fac_pubs/473 doi:10.1002/lno.12290 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1484/viewcontent/Chappell_2023_InteractionsofBioactiveTraceMetalsinShipboardOCR.pdf This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-DC) License , which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. OES Faculty Publications Phytoplankton growth Dissolved iron Manganese Cobalt Nickel Copper Zinc Cadmium Phytoplankton community composition Southern Ocean water masses Incubation experiments Biogeochemical processes Biogeochemistry Oceanography Organic Chemistry article 2023 ftolddominionuni https://doi.org/10.1002/lno.12290 2023-11-13T19:09:43Z In the Southern Ocean, it is well‐known that iron (Fe) limits phytoplankton growth. Yet, other trace metals can also affect phytoplankton physiology. This study investigated feedbacks between phytoplankton growth and dissolved Fe, manganese (Mn), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), and cadmium (Cd) concentrations in Southern Ocean shipboard incubations. Three experiments were conducted in September–October 2016 near the West Antarctic Peninsula: Incubations 1 and 3 offshore in the Antarctic Circumpolar Current, and Incubation 2 inshore in Bransfield Strait. Additions of Fe and/or vitamin B12 to inshore and offshore waters were employed and allowed assessment of metal (M) uptake relative to soluble reactive phosphorus (P) across a wide range of initial conditions. Offshore, treatments of >1 nmol L−1 added Fe were Fe‐replete, whereas inshore waters were already Fe‐replete. Results suggest Mn was a secondary limiting nutrient inshore and offshore. No Fe‐vitamin B12 colimitation was observed. Overall, M:P uptake in the incubations was closely related to initial dissolved M:P for Fe, Mn, Co, Ni, and Cd, and for Cu inshore. Final concentrations of Fe and Zn were similar across light treatments of the experiments despite very different phytoplankton responses, and we observed evidence for Co/Cd/Zn substitution and for recycling of biogenic metals as inventories plateaued. In dark bottles, the absence of Mn oxidation may have allowed more efficient recycling of Fe and other trace metals. Our results provide insight into factors governing trace metal uptake, with implications for phytoplankton community composition locally and preformed micronutrient bioavailability in Southern Ocean water masses. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Bransfield Strait Southern Ocean Old Dominion University: ODU Digital Commons Antarctic Southern Ocean The Antarctic Antarctic Peninsula Bransfield Strait Limnology and Oceanography 68 3 525 543 |
institution |
Open Polar |
collection |
Old Dominion University: ODU Digital Commons |
op_collection_id |
ftolddominionuni |
language |
unknown |
topic |
Phytoplankton growth Dissolved iron Manganese Cobalt Nickel Copper Zinc Cadmium Phytoplankton community composition Southern Ocean water masses Incubation experiments Biogeochemical processes Biogeochemistry Oceanography Organic Chemistry |
spellingShingle |
Phytoplankton growth Dissolved iron Manganese Cobalt Nickel Copper Zinc Cadmium Phytoplankton community composition Southern Ocean water masses Incubation experiments Biogeochemical processes Biogeochemistry Oceanography Organic Chemistry Burns, Shannon M. Bundy, Randelle M. Abbott, William Abdala, Zuzanna Sterling, Alexa R. Chappell, P. Dreux Jenkins, Bethany D. Buck, Kristen N. Interactions of Bioactive Trace Metals in Shipboard Southern Ocean Incubation Experiments |
topic_facet |
Phytoplankton growth Dissolved iron Manganese Cobalt Nickel Copper Zinc Cadmium Phytoplankton community composition Southern Ocean water masses Incubation experiments Biogeochemical processes Biogeochemistry Oceanography Organic Chemistry |
description |
In the Southern Ocean, it is well‐known that iron (Fe) limits phytoplankton growth. Yet, other trace metals can also affect phytoplankton physiology. This study investigated feedbacks between phytoplankton growth and dissolved Fe, manganese (Mn), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), and cadmium (Cd) concentrations in Southern Ocean shipboard incubations. Three experiments were conducted in September–October 2016 near the West Antarctic Peninsula: Incubations 1 and 3 offshore in the Antarctic Circumpolar Current, and Incubation 2 inshore in Bransfield Strait. Additions of Fe and/or vitamin B12 to inshore and offshore waters were employed and allowed assessment of metal (M) uptake relative to soluble reactive phosphorus (P) across a wide range of initial conditions. Offshore, treatments of >1 nmol L−1 added Fe were Fe‐replete, whereas inshore waters were already Fe‐replete. Results suggest Mn was a secondary limiting nutrient inshore and offshore. No Fe‐vitamin B12 colimitation was observed. Overall, M:P uptake in the incubations was closely related to initial dissolved M:P for Fe, Mn, Co, Ni, and Cd, and for Cu inshore. Final concentrations of Fe and Zn were similar across light treatments of the experiments despite very different phytoplankton responses, and we observed evidence for Co/Cd/Zn substitution and for recycling of biogenic metals as inventories plateaued. In dark bottles, the absence of Mn oxidation may have allowed more efficient recycling of Fe and other trace metals. Our results provide insight into factors governing trace metal uptake, with implications for phytoplankton community composition locally and preformed micronutrient bioavailability in Southern Ocean water masses. |
format |
Article in Journal/Newspaper |
author |
Burns, Shannon M. Bundy, Randelle M. Abbott, William Abdala, Zuzanna Sterling, Alexa R. Chappell, P. Dreux Jenkins, Bethany D. Buck, Kristen N. |
author_facet |
Burns, Shannon M. Bundy, Randelle M. Abbott, William Abdala, Zuzanna Sterling, Alexa R. Chappell, P. Dreux Jenkins, Bethany D. Buck, Kristen N. |
author_sort |
Burns, Shannon M. |
title |
Interactions of Bioactive Trace Metals in Shipboard Southern Ocean Incubation Experiments |
title_short |
Interactions of Bioactive Trace Metals in Shipboard Southern Ocean Incubation Experiments |
title_full |
Interactions of Bioactive Trace Metals in Shipboard Southern Ocean Incubation Experiments |
title_fullStr |
Interactions of Bioactive Trace Metals in Shipboard Southern Ocean Incubation Experiments |
title_full_unstemmed |
Interactions of Bioactive Trace Metals in Shipboard Southern Ocean Incubation Experiments |
title_sort |
interactions of bioactive trace metals in shipboard southern ocean incubation experiments |
publisher |
ODU Digital Commons |
publishDate |
2023 |
url |
https://digitalcommons.odu.edu/oeas_fac_pubs/473 https://doi.org/10.1002/lno.12290 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1484/viewcontent/Chappell_2023_InteractionsofBioactiveTraceMetalsinShipboardOCR.pdf |
geographic |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Bransfield Strait |
geographic_facet |
Antarctic Southern Ocean The Antarctic Antarctic Peninsula Bransfield Strait |
genre |
Antarc* Antarctic Antarctic Peninsula Bransfield Strait Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Bransfield Strait Southern Ocean |
op_source |
OES Faculty Publications |
op_relation |
https://digitalcommons.odu.edu/oeas_fac_pubs/473 doi:10.1002/lno.12290 https://digitalcommons.odu.edu/context/oeas_fac_pubs/article/1484/viewcontent/Chappell_2023_InteractionsofBioactiveTraceMetalsinShipboardOCR.pdf |
op_rights |
This is an open access article under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-DC) License , which permits use and distribution in any medium, provided the original work is properly cited, the use is non-commercial and no modifications or adaptations are made. |
op_doi |
https://doi.org/10.1002/lno.12290 |
container_title |
Limnology and Oceanography |
container_volume |
68 |
container_issue |
3 |
container_start_page |
525 |
op_container_end_page |
543 |
_version_ |
1784885580114427904 |