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Comeau, Steeve; Cornwall, Christopher Edward; DeCarlo, Thomas M; Doo, Steve S; Carpenter, Robert C; McCulloch, Malcolm T (2023): Seawater carbonate chemistry and resistance to ocean acidification in coral reef taxa [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.959675

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Abstract:
Ocean acidification (OA) is a major threat to coral reefs, which are built by calcareous species. However, long-term assessments of the impacts of OA are scarce, limiting the understanding of the capacity of corals and coralline algae to acclimatize to high partial pressure of carbon dioxide (pCO2) levels. Species-specific sensitivities to OA are influenced by its impacts on chemistry within the calcifying fluid (CF). Here, we investigate the capacity of multiple coral and calcifying macroalgal species to acclimatize to elevated pCO2 by determining their chemistry in the CF during a year-long experiment. We found no evidence of acclimatization to elevated pCO2 across any of the tested taxa. The effects of increasing seawater pCO2 on the CF chemistry were rapid and persisted until the end of the experiment. Our results show that acclimatization of the CF chemistry does not occur within one year, which confirms the threat of OA for future reef accretion and ecological function.
Keyword(s):
Acid-base regulation; Acropora pulchra; Animalia; Benthic animals; Benthos; Biomass/Abundance/Elemental composition; Calcification/Dissolution; Chlorophyta; Cnidaria; Coast and continental shelf; Containers and aquaria (20-1000 L or < 1 m**2); Halimeda minima; Laboratory experiment; Lithophyllum kotschyanum; Macroalgae; Plantae; Pocillopora verrucosa; Porites sp.; Psammocora profundacella; Rhodophyta; South Pacific; Species interaction; Tropical
Supplement to:
Comeau, Steeve; Cornwall, Christopher Edward; DeCarlo, Thomas M; Doo, Steve S; Carpenter, Robert C; McCulloch, Malcolm T (2019): Resistance to ocean acidification in coral reef taxa is not gained by acclimatization. Nature Climate Change, 9(6), 477-483, https://doi.org/10.1038/s41558-019-0486-9
Documentation:
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2022): seacarb: seawater carbonate chemistry with R. R package version 3.3.1. https://cran.r-project.org/web/packages/seacarb/index.html
Project(s):
Ocean Acidification International Coordination Centre (OA-ICC)
Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2022) 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 2023-06-08.
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Type of studyStudy typeComeau, Steeve
2SpeciesSpeciesComeau, Steeve
3IdentificationIDComeau, SteeveFlume
4Treatment: partial pressure of carbon dioxideT:pCO2µatmComeau, Steeve
5Calcification rate of calcium carbonateCalc rate CaCO3mg/cm2/dayComeau, Steeve
6Boron/Calcium ratioB/CaComeau, Steeve
7δ11Bδ11B‰ SRMComeau, Steevein the skeelton
8Aragonite saturation stateOmega ArgComeau, Steeveat the site of calcifcation estimated from Raman spectroscopy
9Calcifying fluid, pHCF pHComeau, Steeve
10Calcifying fluid, dissolved inorganic carbonCF DICµmol/kgComeau, Steeve
11RatioRatioComeau, Steevecalcium at the site of calcification/ calcium in seawater
12Temperature, waterTemp°CComeau, Steeve
13SalinitySalComeau, Steeve
14Alkalinity, totalATµmol/kgComeau, SteevePotentiometric titration
15pHpHComeau, SteevePotentiometrictotal scale
16Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmComeau, Steeve
17Carbonate system computation flagCSC flagYang, YanCalculated using seacarb after Nisumaa et al. (2010)
18Carbon dioxideCO2µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
19Fugacity of carbon dioxide (water) at sea surface temperature (wet air)fCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
20Partial pressure of carbon dioxide (water) at sea surface temperature (wet air)pCO2water_SST_wetµatmYang, YanCalculated using seacarb after Nisumaa et al. (2010)
21Bicarbonate ion[HCO3]-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
22Carbonate ion[CO3]2-µmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
23Carbon, inorganic, dissolvedDICµmol/kgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
24Aragonite saturation stateOmega ArgYang, YanCalculated using seacarb after Nisumaa et al. (2010)
25Calcite saturation stateOmega CalYang, YanCalculated using seacarb after Nisumaa et al. (2010)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
4181 data points

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