Gómez Batista, Miguel; Metian, Marc; Oberhänsli, F; Pouil, Simon; Tambutté, Eric; Gattuso, Jean-Pierre; Hernández, Carlos M Alonso; Gazeau, Frédéric (2020): Seawater carbonate chemistry and coral calcification [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.912222
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Published: 2020-02-19 • DOI registered: 2020-03-26
Abstract:
Coral reefs are constructed by calcifiers that precipitate calcium carbonate to build their shells or skeletons through the process of calcification. Accurately assessing coral calcification rates is crucial to determine the health of these ecosystems and their response to major environmental changes such as ocean warming and acidification. Several approaches have been used to assess rates of coral calcification but there is a real need to compare these approaches in order to ascertain that high quality and intercomparable results can be produced. Here, we assessed four methods (total alkalinity anomaly, calcium anomaly, 45Ca incorporation and 13C incorporation) to determine coral calcification of the reef-building coral Stylophora pistillata. Given the importance of environmental conditions on this process, the study was performed under two pH (ambient and low level) and two light (light and dark) conditions. Under all conditions, calcification rates estimated using the alkalinity and calcium anomaly techniques as well as 45Ca incorporation were highly correlated. Such a strong correlation between the alkalinity anomaly and 45Ca incorporation techniques has not been observed in previous studies and most probably results from improvements described in the present paper. The only method which provided calcification rates significantly different from the other three techniques was 13C incorporation. Calcification rates based on this method were consistently higher than those measured using the other techniques. Although reasons for these discrepancies remain unclear, the use of this technique for assessing calcification rates in corals is not recommended without further investigations.
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Supplement to:
Gómez Batista, Miguel; Metian, Marc; Oberhänsli, F; Pouil, Simon; Swarzenski, Peter W; Tambutté, Eric; Gattuso, Jean-Pierre; Hernández, Carlos M Alonso; Gazeau, Frédéric (2020): Intercomparison of four methods to estimate coral calcification under various environmental conditions. Biogeosciences, 17(4), 887-899, https://doi.org/10.5194/bg-17-887-2020
Further details:
Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James C; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2019): seacarb: seawater carbonate chemistry with R. R package version 3.2.12. https://CRAN.R-project.org/package=seacarb
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Comment:
In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2019) 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 2020-02-17.
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License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
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Curation Level: Enhanced curation (CurationLevelC)
Size:
2610 data points
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- Edmunds, PJ; Burgess, SC (2020): Seawater carbonate chemistry and coral calcification. https://doi.org/10.1594/PANGAEA.926042
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