Seawater carbonate chemistry and skeletal isotopic composition and calcifying fuid composition in co-occurring Porites and Diploastrea specimens across the Pacifc ocean


The Tara Pacifc expedition (2016–2018) provided an opportunity to investigate calcifcation patterns in extant corals throughout thePacifc Ocean. Cores from colonies of the massive Porites and Diploastrea genera were collected fromdiferent environments to assess calcifcation parameters of long-lived reef-building corals. In this study, we compared the calcifcation and carbonate chemistryup-regulation of Diploastrea heliopora and Porites corals from across a range of environments. To this, we analyzed the skeletal geochemistry and growth parameters of 39 colonies of Porites (n=33) and Diploastrea (n=6) collected across the tropical Pacifc Ocean during the Tara Pacifc expedition (2016–2018). Te collected corals represent a suite of cores exposed to various hydrological conditions of seawater temperature (SST: 22.4–29.8 °C), salinity (SSS: 31.5–36.1), and carbonate chemistry (total scale pHsw: 8.01–8.09). Te average chemical composition of the calcifying fuid (pHcf, [CO32−]cf, DICcf, Ωcf) was derived from paired boron isotope (δ11B) and B/Ca analyses of core-top samples corresponding to the last 6 years of growth (2010–2016). Based on these data, we assessed the impact of the ambient seawater properties (SST, salinity, carbonate chemistry) on the cf composition of these slow-growing reef-building genera at the Pacifc basin scale.

In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2024) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2024-04-08.

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Creator Canesi, Marine; Douville, Eric ORCID logo; Montagna, Paolo ORCID logo; Taviani, Marco ORCID logo; Stolarski, J ORCID logo; Bordier, Louise; Dapoigny, Arnaud; Coulibaly, Gninwoyo Eric Hermann; Simon, Anne‑Catherine; Agelou, Mathieu; Fin, Jonathan; Metzl, Nicolas ORCID logo; Iwankow, Guillaume; Allemand, Denis; Planes, Serge ORCID logo; Moulin, Clémentine; Lombard, Fabien ORCID logo; Bourdin, Guillaume ORCID logo; Troublé, Romain; Agostini, Sylvain ORCID logo; Banaigs, Bernard; Boissin, Emilie (ORCID: 0000-0002-4110-790X); Boss, Emmanuel ORCID logo; Bowler, Chris ORCID logo; De Vargas, Colomban ORCID logo; Flores, M (ORCID: 0000-0003-3609-286X); Forcioli, Didier ORCID logo; Furla, Paola (ORCID: 0000-0001-9899-942X); Gilson, Eric; Galand, Pierre E ORCID logo; Pesant, Stephane ORCID logo; Sunagawa, Shinichi ORCID logo; Thomas, Olivier P; Thurber, Rebecca Vega; Voolstra, Christian R ORCID logo; Wincker, Patrick; Zoccola, Didier ORCID logo; Reynaud, Stéphanie
Publisher PANGAEA
Contributor Yang, Yan
Publication Year 2024
Rights Creative Commons Attribution 4.0 International;
OpenAccess true
Resource Type Dataset
Format text/tab-separated-values
Size 1532 data points
Discipline Earth System Research
Spatial Coverage (-81.783W, -27.067S, 121.483E, 27.083N)
Temporal Coverage Begin 2016-07-23T00:00:00Z
Temporal Coverage End 2018-08-25T00:00:00Z