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The role of calcium in regulating marine phosphorus burial and atmospheric oxygenation

The marine phosphorus cycle plays a critical role in controlling the extent of global primary productivity and thus atmospheric pO(2) on geologic time scales. However, previous attempts to model carbon–phosphorus-oxygen feedbacks have neglected key parameters that could shape the global P cycle. Her...

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Autores principales: Zhao, Mingyu, Zhang, Shuang, Tarhan, Lidya G., Reinhard, Christopher T., Planavsky, Noah
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7203231/
https://www.ncbi.nlm.nih.gov/pubmed/32376824
http://dx.doi.org/10.1038/s41467-020-15673-3
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author Zhao, Mingyu
Zhang, Shuang
Tarhan, Lidya G.
Reinhard, Christopher T.
Planavsky, Noah
author_facet Zhao, Mingyu
Zhang, Shuang
Tarhan, Lidya G.
Reinhard, Christopher T.
Planavsky, Noah
author_sort Zhao, Mingyu
collection PubMed
description The marine phosphorus cycle plays a critical role in controlling the extent of global primary productivity and thus atmospheric pO(2) on geologic time scales. However, previous attempts to model carbon–phosphorus-oxygen feedbacks have neglected key parameters that could shape the global P cycle. Here we present new diagenetic models to fully parameterize marine P burial. We have also coupled this diagenetic framework to a global carbon cycle model. We find that seawater calcium concentration, by strongly influencing carbonate fluorapatite (CFA) formation, is a key factor controlling global phosphorus cycling, and therefore plays a critical role in shaping the global oxygen cycle. A compilation of Cenozoic deep-sea sedimentary phosphorus speciation data provides empirical support for the idea that CFA formation is strongly influenced by marine Ca concentrations. Therefore, we propose a previously overlooked coupling between Phanerozoic tectonic cycles, the major-element composition of seawater, the marine phosphorus cycle, and atmospheric pO(2).
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spelling pubmed-72032312020-05-13 The role of calcium in regulating marine phosphorus burial and atmospheric oxygenation Zhao, Mingyu Zhang, Shuang Tarhan, Lidya G. Reinhard, Christopher T. Planavsky, Noah Nat Commun Article The marine phosphorus cycle plays a critical role in controlling the extent of global primary productivity and thus atmospheric pO(2) on geologic time scales. However, previous attempts to model carbon–phosphorus-oxygen feedbacks have neglected key parameters that could shape the global P cycle. Here we present new diagenetic models to fully parameterize marine P burial. We have also coupled this diagenetic framework to a global carbon cycle model. We find that seawater calcium concentration, by strongly influencing carbonate fluorapatite (CFA) formation, is a key factor controlling global phosphorus cycling, and therefore plays a critical role in shaping the global oxygen cycle. A compilation of Cenozoic deep-sea sedimentary phosphorus speciation data provides empirical support for the idea that CFA formation is strongly influenced by marine Ca concentrations. Therefore, we propose a previously overlooked coupling between Phanerozoic tectonic cycles, the major-element composition of seawater, the marine phosphorus cycle, and atmospheric pO(2). Nature Publishing Group UK 2020-05-06 /pmc/articles/PMC7203231/ /pubmed/32376824 http://dx.doi.org/10.1038/s41467-020-15673-3 Text en © The Author(s) 2020 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Zhao, Mingyu
Zhang, Shuang
Tarhan, Lidya G.
Reinhard, Christopher T.
Planavsky, Noah
The role of calcium in regulating marine phosphorus burial and atmospheric oxygenation
title The role of calcium in regulating marine phosphorus burial and atmospheric oxygenation
title_full The role of calcium in regulating marine phosphorus burial and atmospheric oxygenation
title_fullStr The role of calcium in regulating marine phosphorus burial and atmospheric oxygenation
title_full_unstemmed The role of calcium in regulating marine phosphorus burial and atmospheric oxygenation
title_short The role of calcium in regulating marine phosphorus burial and atmospheric oxygenation
title_sort role of calcium in regulating marine phosphorus burial and atmospheric oxygenation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7203231/
https://www.ncbi.nlm.nih.gov/pubmed/32376824
http://dx.doi.org/10.1038/s41467-020-15673-3
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