IOCAS-IR  > 海洋地质与环境重点实验室
Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO(2) gradients
Guillermic, Maxence1,2; Misra, Sambuddha3,4; Eagle, Robert1,2; Villa, Alexandra1,5; Chang, Fengming6; Tripati, Aradhna1,2
2020-07-08
Source PublicationBIOGEOSCIENCES
ISSN1726-4170
Volume17Issue:13Pages:3487-3510
AbstractBoron isotope systematics of planktonic foraminifera from core-top sediments and culture experiments have been studied to investigate the sensitivity of delta B-11 of calcite tests to seawater pH. However, our knowledge of the relationship between delta B-11 and pH remains incomplete for many taxa. Thus, to expand the potential scope of application of this proxy, we report delta B-11 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 delta B-11-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 delta(11)B(carbonate )to delta B-11(borate) (e.g., Delta delta B-11(carbonate)/Delta delta B-11(borate)) 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 pCO(2) 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.
DOI10.5194/bg-17-3487-2020
Indexed BySCI
Language英语
Funding ProjectDOE BES grant[DE-FG02-13ER16402] ; LabexMer[ANR-10-LABX-19-01] ; IAGC
WOS Research AreaEnvironmental Sciences & Ecology ; Geology
WOS SubjectEcology ; Geosciences, Multidisciplinary
WOS IDWOS:000548520500002
PublisherCOPERNICUS GESELLSCHAFT MBH
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.qdio.ac.cn/handle/337002/167967
Collection海洋地质与环境重点实验室
Corresponding AuthorGuillermic, Maxence; Tripati, Aradhna
Affiliation1.Univ Calif Los Angeles, Dept Earth Planetary & Space Sci, Dept Atmospher & Ocean Sci, Inst Environm & Sustainabil, Los Angeles, CA 90095 USA
2.Inst Univ Europeen Mer, UBO, Lab Geosci Ocean, UMR6538, Rue Dumont dUrville, F-29280 Plouzane, France
3.Indian Inst Sci, Ctr Earth Sci, Bengaluru 560012, Karnataka, India
4.Univ Cambridge, Dept Earth Sci, Godwin Lab Palaeoclimate Res, Cambridge, England
5.Univ Wisconsin, Dept Geosci, Madison, WI 53706 USA
6.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
Recommended Citation
GB/T 7714
Guillermic, Maxence,Misra, Sambuddha,Eagle, Robert,et al. Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO(2) gradients[J]. BIOGEOSCIENCES,2020,17(13):3487-3510.
APA Guillermic, Maxence,Misra, Sambuddha,Eagle, Robert,Villa, Alexandra,Chang, Fengming,&Tripati, Aradhna.(2020).Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO(2) gradients.BIOGEOSCIENCES,17(13),3487-3510.
MLA Guillermic, Maxence,et al."Seawater pH reconstruction using boron isotopes in multiple planktonic foraminifera species with different depth habitats and their potential to constrain pH and pCO(2) gradients".BIOGEOSCIENCES 17.13(2020):3487-3510.
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