Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO2 gradients
Boron isotope systematics of planktonic foraminifera from core-top sediments and culture experiments have been studied to investigate the sensitivity of δ11B of calcite tests to seawater pH. However, our knowledge of the relationship between δ11B and pH remains incomplete for many taxa. Thus, to exp...
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Copernicus Publications
2020
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00051970 2023-05-15T18:00:31+02:00 Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO2 gradients Guillermic, Maxence Misra, Sambuddha Eagle, Robert Villa, Alexandra Chang, Fengming Tripati, Aradhna 2020-07 electronic https://doi.org/10.5194/bg-17-3487-2020 https://noa.gwlb.de/receive/cop_mods_00051970 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00051626/bg-17-3487-2020.pdf https://bg.copernicus.org/articles/17/3487/2020/bg-17-3487-2020.pdf eng eng Copernicus Publications Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-17-3487-2020 https://noa.gwlb.de/receive/cop_mods_00051970 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00051626/bg-17-3487-2020.pdf https://bg.copernicus.org/articles/17/3487/2020/bg-17-3487-2020.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess CC-BY article Verlagsveröffentlichung article Text doc-type:article 2020 ftnonlinearchiv https://doi.org/10.5194/bg-17-3487-2020 2022-02-08T22:36:10Z Boron isotope systematics of planktonic foraminifera from core-top sediments and culture experiments have been studied to investigate the sensitivity of δ11B of calcite tests to seawater pH. However, our knowledge of the relationship between δ11B and pH remains incomplete for many taxa. Thus, to expand the potential scope of application of this proxy, we report δ11B data for seven different species of planktonic foraminifera from sediment core tops. We utilize a method for the measurement of small samples of foraminifera and calculate the δ11B-calcite sensitivity to pH for Globigerinoides ruber, Trilobus sacculifer (sacc or without sacc), Orbulina universa, Pulleniatina obliquiloculata, Neogloboquadrina dutertrei, Globorotalia menardii, and Globorotalia tumida, including for unstudied core tops and species. These taxa have diverse ecological preferences and are from sites that span a range of oceanographic regimes, including some that are in regions of air–sea equilibrium and others that are out of equilibrium with the atmosphere. The sensitivity of δ11Bcarbonate to δ11Bborate (e.g., Δδ11Bcarbonate∕Δδ11Bborate) in core tops is consistent with previous studies for T. sacculifer and G. ruber and close to unity for N. dutertrei, O. universa, and combined deep-dwelling species. Deep-dwelling species closely follow the core-top calibration for O. universa, which is attributed to respiration-driven microenvironments likely caused by light limitation and/or symbiont–host interactions. Our data support the premise that utilizing boron isotope measurements of multiple species within a sediment core can be utilized to constrain vertical profiles of pH and pCO2 at sites spanning different oceanic regimes, thereby constraining changes in vertical pH gradients and yielding insights into the past behavior of the oceanic carbon pumps. Article in Journal/Newspaper Planktonic foraminifera Niedersächsisches Online-Archiv NOA Biogeosciences 17 13 3487 3510 |
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article Verlagsveröffentlichung Guillermic, Maxence Misra, Sambuddha Eagle, Robert Villa, Alexandra Chang, Fengming Tripati, Aradhna Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO2 gradients |
topic_facet |
article Verlagsveröffentlichung |
description |
Boron isotope systematics of planktonic foraminifera from core-top sediments and culture experiments have been studied to investigate the sensitivity of δ11B of calcite tests to seawater pH. However, our knowledge of the relationship between δ11B and pH remains incomplete for many taxa. Thus, to expand the potential scope of application of this proxy, we report δ11B data for seven different species of planktonic foraminifera from sediment core tops. We utilize a method for the measurement of small samples of foraminifera and calculate the δ11B-calcite sensitivity to pH for Globigerinoides ruber, Trilobus sacculifer (sacc or without sacc), Orbulina universa, Pulleniatina obliquiloculata, Neogloboquadrina dutertrei, Globorotalia menardii, and Globorotalia tumida, including for unstudied core tops and species. These taxa have diverse ecological preferences and are from sites that span a range of oceanographic regimes, including some that are in regions of air–sea equilibrium and others that are out of equilibrium with the atmosphere. The sensitivity of δ11Bcarbonate to δ11Bborate (e.g., Δδ11Bcarbonate∕Δδ11Bborate) in core tops is consistent with previous studies for T. sacculifer and G. ruber and close to unity for N. dutertrei, O. universa, and combined deep-dwelling species. Deep-dwelling species closely follow the core-top calibration for O. universa, which is attributed to respiration-driven microenvironments likely caused by light limitation and/or symbiont–host interactions. Our data support the premise that utilizing boron isotope measurements of multiple species within a sediment core can be utilized to constrain vertical profiles of pH and pCO2 at sites spanning different oceanic regimes, thereby constraining changes in vertical pH gradients and yielding insights into the past behavior of the oceanic carbon pumps. |
format |
Article in Journal/Newspaper |
author |
Guillermic, Maxence Misra, Sambuddha Eagle, Robert Villa, Alexandra Chang, Fengming Tripati, Aradhna |
author_facet |
Guillermic, Maxence Misra, Sambuddha Eagle, Robert Villa, Alexandra Chang, Fengming Tripati, Aradhna |
author_sort |
Guillermic, Maxence |
title |
Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO2 gradients |
title_short |
Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO2 gradients |
title_full |
Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO2 gradients |
title_fullStr |
Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO2 gradients |
title_full_unstemmed |
Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO2 gradients |
title_sort |
seawater ph reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain ph and pco2 gradients |
publisher |
Copernicus Publications |
publishDate |
2020 |
url |
https://doi.org/10.5194/bg-17-3487-2020 https://noa.gwlb.de/receive/cop_mods_00051970 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00051626/bg-17-3487-2020.pdf https://bg.copernicus.org/articles/17/3487/2020/bg-17-3487-2020.pdf |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
Biogeosciences -- http://www.bibliothek.uni-regensburg.de/ezeit/?2158181 -- http://www.copernicus.org/EGU/bg/bg.html -- 1726-4189 https://doi.org/10.5194/bg-17-3487-2020 https://noa.gwlb.de/receive/cop_mods_00051970 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00051626/bg-17-3487-2020.pdf https://bg.copernicus.org/articles/17/3487/2020/bg-17-3487-2020.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/bg-17-3487-2020 |
container_title |
Biogeosciences |
container_volume |
17 |
container_issue |
13 |
container_start_page |
3487 |
op_container_end_page |
3510 |
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1766169644330123264 |