Insights into the deglacial variability of phytoplankton community structure in the eastern equatorial Pacific Ocean using [(231)Pa/(230)Th]xs and opal-carbonate fluxes
Fully and accurately reconstructing changes in oceanic productivity and carbon export and their controls is critical to determining the efficiency of the biological pump and its role in the global carbon cycle through time, particularly in modern CO(2) source regions like the eastern equatorial Paci...
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Online Access: | http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9789155/ http://www.ncbi.nlm.nih.gov/pubmed/36564500 https://doi.org/10.1038/s41598-022-26593-1 |
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ftpubmed:oai:pubmedcentral.nih.gov:9789155 2023-05-15T18:25:25+02:00 Insights into the deglacial variability of phytoplankton community structure in the eastern equatorial Pacific Ocean using [(231)Pa/(230)Th]xs and opal-carbonate fluxes Schimmenti, Danielle Marcantonio, Franco Hayes, Christopher T. Hertzberg, Jennifer Schmidt, Matthew Sarao, John 2022-12-23 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9789155/ http://www.ncbi.nlm.nih.gov/pubmed/36564500 https://doi.org/10.1038/s41598-022-26593-1 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9789155/ http://www.ncbi.nlm.nih.gov/pubmed/36564500 http://dx.doi.org/10.1038/s41598-022-26593-1 © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Sci Rep Article Text 2022 ftpubmed https://doi.org/10.1038/s41598-022-26593-1 2023-01-01T01:35:53Z Fully and accurately reconstructing changes in oceanic productivity and carbon export and their controls is critical to determining the efficiency of the biological pump and its role in the global carbon cycle through time, particularly in modern CO(2) source regions like the eastern equatorial Pacific (EEP). Here we present new high-resolution records of sedimentary (230)Th-normalized opal and nannofossil carbonate fluxes and [(231)Pa/(230)Th]xs ratios from site MV1014-02-17JC in the Panama Basin. We find that, across the last deglaciation, phytoplankton community structure is driven by changing patterns of nutrient (nitrate, iron, and silica) availability which, in turn, are caused by variability in the position of the Intertropical Convergence Zone (ITCZ) and associated changes in biogeochemical cycling and circulation in the Southern Ocean. Our multi-proxy work suggests greater scrutiny is required in the interpretation of common geochemical proxies of productivity and carbon export in the EEP. Text Southern Ocean PubMed Central (PMC) Pacific Southern Ocean Scientific Reports 12 1 |
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Article Schimmenti, Danielle Marcantonio, Franco Hayes, Christopher T. Hertzberg, Jennifer Schmidt, Matthew Sarao, John Insights into the deglacial variability of phytoplankton community structure in the eastern equatorial Pacific Ocean using [(231)Pa/(230)Th]xs and opal-carbonate fluxes |
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Fully and accurately reconstructing changes in oceanic productivity and carbon export and their controls is critical to determining the efficiency of the biological pump and its role in the global carbon cycle through time, particularly in modern CO(2) source regions like the eastern equatorial Pacific (EEP). Here we present new high-resolution records of sedimentary (230)Th-normalized opal and nannofossil carbonate fluxes and [(231)Pa/(230)Th]xs ratios from site MV1014-02-17JC in the Panama Basin. We find that, across the last deglaciation, phytoplankton community structure is driven by changing patterns of nutrient (nitrate, iron, and silica) availability which, in turn, are caused by variability in the position of the Intertropical Convergence Zone (ITCZ) and associated changes in biogeochemical cycling and circulation in the Southern Ocean. Our multi-proxy work suggests greater scrutiny is required in the interpretation of common geochemical proxies of productivity and carbon export in the EEP. |
format |
Text |
author |
Schimmenti, Danielle Marcantonio, Franco Hayes, Christopher T. Hertzberg, Jennifer Schmidt, Matthew Sarao, John |
author_facet |
Schimmenti, Danielle Marcantonio, Franco Hayes, Christopher T. Hertzberg, Jennifer Schmidt, Matthew Sarao, John |
author_sort |
Schimmenti, Danielle |
title |
Insights into the deglacial variability of phytoplankton community structure in the eastern equatorial Pacific Ocean using [(231)Pa/(230)Th]xs and opal-carbonate fluxes |
title_short |
Insights into the deglacial variability of phytoplankton community structure in the eastern equatorial Pacific Ocean using [(231)Pa/(230)Th]xs and opal-carbonate fluxes |
title_full |
Insights into the deglacial variability of phytoplankton community structure in the eastern equatorial Pacific Ocean using [(231)Pa/(230)Th]xs and opal-carbonate fluxes |
title_fullStr |
Insights into the deglacial variability of phytoplankton community structure in the eastern equatorial Pacific Ocean using [(231)Pa/(230)Th]xs and opal-carbonate fluxes |
title_full_unstemmed |
Insights into the deglacial variability of phytoplankton community structure in the eastern equatorial Pacific Ocean using [(231)Pa/(230)Th]xs and opal-carbonate fluxes |
title_sort |
insights into the deglacial variability of phytoplankton community structure in the eastern equatorial pacific ocean using [(231)pa/(230)th]xs and opal-carbonate fluxes |
publisher |
Nature Publishing Group UK |
publishDate |
2022 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9789155/ http://www.ncbi.nlm.nih.gov/pubmed/36564500 https://doi.org/10.1038/s41598-022-26593-1 |
geographic |
Pacific Southern Ocean |
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Pacific Southern Ocean |
genre |
Southern Ocean |
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Southern Ocean |
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Sci Rep |
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9789155/ http://www.ncbi.nlm.nih.gov/pubmed/36564500 http://dx.doi.org/10.1038/s41598-022-26593-1 |
op_rights |
© The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41598-022-26593-1 |
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Scientific Reports |
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12 |
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1 |
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