Todorovic, Sara; Dissard, Delphine; Linsley, Braddock K; Benthien, Albert; Richter, Klaus-Uwe; Bijma, Jelle; Wu, Henry C: B/Ca, δ¹¹B and calcifying fluid carbonate chemistry reconstruction of Porites sp. from Rotuma (RO2) [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.972837 (dataset in review)
Abstract:
Samples were collected from two Porites sp. coral cores in the Southwestern Pacific, specifically at Rotuma Island (Fiji). Parameters measured in this study include boron stable isotope analysis (δ11B) and Boron/Calcium (B/Ca) ratios. The Rotuma coral core (RO2) provided 178 annual samples covering the period from 1821 to 1998 out of which 102 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/).
Keyword(s):
References:
DeCarlo, Thomas M; Holcomb, Michael; McCulloch, Malcolm T (2018): Reviews and syntheses: Revisiting the boron systematics of aragonite and their application to coral calcification. Biogeosciences, 15(9), 2819-2834, https://doi.org/10.5194/bg-15-2819-2018
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James (2021): seacarb: seawater carbonate chemistry with R. R package version 3.2.16. https://cran.r-project.org/web/packages/seacarb/index.html
Project(s):
Funding:
Bundesministerium für Bildung und Forschung, Bonn (BMBF), grant/award no. 57429626: Make Our Planet Great Again-Ocean acidification crisis and global warming observations from tropical corals
Coverage:
Latitude: -12.488056 * Longitude: 177.106944
Date/Time Start: 1998-10-27T00:00:00 * Date/Time End: 1998-10-27T00:00:00
Minimum Elevation: -11.0 m * Maximum Elevation: -11.0 m
Event(s):
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Age | Age | a AD/CE | Todorovic, Sara | ||
| 2 | AGE | Age | ka BP | Todorovic, Sara | Geocode | |
| 3 | Porites sp., Boron/Calcium ratio | Porites sp. B/Ca | µmol/mol | Todorovic, Sara | Calculated, see abstract | |
| 4 | Porites sp., δ11B | Porites sp. δ11B | ‰ | Todorovic, Sara | Multi-Collector Inductively Coupled Plasma Mass Spectrometer (MC-ICP-MS), Nu Instruments, NuPlasma II HR | Average |
| 5 | Porites sp., δ11B, standard deviation | Porites sp. δ11B std dev | ± | Todorovic, Sara | Multi-Collector Inductively Coupled Plasma Mass Spectrometer (MC-ICP-MS), Nu Instruments, NuPlasma II HR | 2 standard deviation |
| 6 | Calcifying fluid, pH | CF pH | Todorovic, Sara | Calculated, see abstract | ||
| 7 | pH, seawater, reconstructed | pH sw reconst | Todorovic, Sara | Calculated, see abstract | ||
| 8 | Calcifying fluid, pH, standard error | CF pH std e | ± | Todorovic, Sara | Calculated, see abstract | Systematic error |
| 9 | Carbonate ion | [CO3]2- | µmol/kg | Todorovic, Sara | Calculated, see abstract | |
| 10 | Carbonate ion, standard error | [CO3]2- std e | ± | Todorovic, Sara | Calculated, see abstract | Systematic error |
| 11 | Carbon, inorganic, dissolved | DIC | µmol/kg | Todorovic, Sara | Calculated, see abstract | |
| 12 | Carbon, inorganic, dissolved, standard error | DIC std e | ± | Todorovic, Sara | Calculated, see abstract | Systematic error |
| 13 | Aragonite saturation state | Omega Arg | Todorovic, Sara | Calculated, see abstract | ||
| 14 | Aragonite saturation state, standard error | Omega Arg std e | ± | Todorovic, Sara | Calculated, see abstract | Systematic error |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
1361 data points