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| Natura: | Dataset Open Access |
| Lingua: | en |
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PANGAEA
2026
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| Accesso online: | https://doi.org/10.1594/PANGAEA.972838 |
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| _version_ | 1867171045377572864 |
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| author | Todorovic, Sara Dissard, Delphine Linsley, Braddock K Benthien, Albert Richter, Klaus-Uwe Bijma, Jelle Wu, Henry C |
| author_facet | Todorovic, Sara Dissard, Delphine Linsley, Braddock K Benthien, Albert Richter, Klaus-Uwe Bijma, Jelle Wu, Henry C |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Samples were collected from two Porites sp. coral cores in the Southwestern Pacific, specifically at Nomuka Iki Island (Tonga). Parameters measured in this study include boron stable isotope analysis (δ11B) and Boron/Calcium (B/Ca) ratios. The Tonga coral core (TNI2) yielded 224 samples covering the period from 1777 to 2004 out of which 123 were analyzed for δ11B. δ11B measurements were conducted on NuPlasma II MC-ICP-MS and boron was concentrated using the micro-distillation (sublimation) method. B/Ca was originally analyzed in every to every second millimeter resolution, providing approximately bimonthly resolution, on Analytik Jena PlasmaQuant Elite ICP-MS. That data was annualized for this study and here it is attached in its annual resolution. The carbonate chemistry of the calcifying fluid was reconstructed using δ11B and B/Ca ratios yielding reconstructions of pHcf (calcifying fluid pH), pHsw (seawater pH), [CO3²] (carbonate ion concentration), DIC (dissolved inorganic carbon), and Ωcf (aragonite saturation state). Reconstructions of [CO3²], DIC and Ωcf were calculated using boronsysarag (DeCarlo et al., 2018;doi:10.5194/bg-15-2819-2018) and seacarb (Gattuso et al., 2021; https://cran.r-project.org/web/packages/seacarb/index.html) packages in R statistical software (R Core team, 2021; https://www.r-project.org/foundation/). |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_972838 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | B/Ca, δ¹¹B and calcifying fluid carbonate chemistry reconstruction of Porites sp. fromTonga (TNI2) Todorovic, Sara Dissard, Delphine Linsley, Braddock K Benthien, Albert Richter, Klaus-Uwe Bijma, Jelle Wu, Henry C Age; AGE; Aragonite saturation; Aragonite saturation state; Aragonite saturation state, standard error; B/Ca; Boron isotope; Calcifying fluid, pH; Calcifying fluid, pH, standard error; Calculated, see abstract; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Carbonate chemistry; Carbonate ion; Carbonate ion, standard error; CO32-; Coral; DHC; DIC; Diver-held corer; Make Our Planet Great Again-Ocean acidification crisis and global warming observations from tropical corals; MOPGA-OASIS; Multi-Collector Inductively Coupled Plasma Mass Spectrometer (MC-ICP-MS), Nu Instruments, NuPlasma II HR; Pacific Warm Pool; pH; pH, seawater, reconstructed; Porites sp., Boron/Calcium ratio; Porites sp., δ11B; Porites sp., δ11B, standard deviation; South Pacific Convergence Zone; South Pacific Gyre; Tonga_TNI2 Samples were collected from two Porites sp. coral cores in the Southwestern Pacific, specifically at Nomuka Iki Island (Tonga). Parameters measured in this study include boron stable isotope analysis (δ11B) and Boron/Calcium (B/Ca) ratios. The Tonga coral core (TNI2) yielded 224 samples covering the period from 1777 to 2004 out of which 123 were analyzed for δ11B. δ11B measurements were conducted on NuPlasma II MC-ICP-MS and boron was concentrated using the micro-distillation (sublimation) method. B/Ca was originally analyzed in every to every second millimeter resolution, providing approximately bimonthly resolution, on Analytik Jena PlasmaQuant Elite ICP-MS. That data was annualized for this study and here it is attached in its annual resolution. The carbonate chemistry of the calcifying fluid was reconstructed using δ11B and B/Ca ratios yielding reconstructions of pHcf (calcifying fluid pH), pHsw (seawater pH), [CO3²] (carbonate ion concentration), DIC (dissolved inorganic carbon), and Ωcf (aragonite saturation state). Reconstructions of [CO3²], DIC and Ωcf were calculated using boronsysarag (DeCarlo et al., 2018;doi:10.5194/bg-15-2819-2018) and seacarb (Gattuso et al., 2021; https://cran.r-project.org/web/packages/seacarb/index.html) packages in R statistical software (R Core team, 2021; https://www.r-project.org/foundation/). |
| title | B/Ca, δ¹¹B and calcifying fluid carbonate chemistry reconstruction of Porites sp. fromTonga (TNI2) |
| topic | Age; AGE; Aragonite saturation; Aragonite saturation state; Aragonite saturation state, standard error; B/Ca; Boron isotope; Calcifying fluid, pH; Calcifying fluid, pH, standard error; Calculated, see abstract; Carbon, inorganic, dissolved; Carbon, inorganic, dissolved, standard error; Carbonate chemistry; Carbonate ion; Carbonate ion, standard error; CO32-; Coral; DHC; DIC; Diver-held corer; Make Our Planet Great Again-Ocean acidification crisis and global warming observations from tropical corals; MOPGA-OASIS; Multi-Collector Inductively Coupled Plasma Mass Spectrometer (MC-ICP-MS), Nu Instruments, NuPlasma II HR; Pacific Warm Pool; pH; pH, seawater, reconstructed; Porites sp., Boron/Calcium ratio; Porites sp., δ11B; Porites sp., δ11B, standard deviation; South Pacific Convergence Zone; South Pacific Gyre; Tonga_TNI2 |
| url | https://doi.org/10.1594/PANGAEA.972838 |