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Comment

. 2013 Jan 29;110(5):1567-8.

doi: 10.1073/pnas.1221308110. Epub 2013 Jan 17.

Coral calcification feels the acid

Alexander C Gagnon¹

Affiliations

PMID: 23329329
PMCID: PMC3562801
DOI: 10.1073/pnas.1221308110

Comment

Coral calcification feels the acid

Alexander C Gagnon. Proc Natl Acad Sci U S A. 2013.

. 2013 Jan 29;110(5):1567-8.

doi: 10.1073/pnas.1221308110. Epub 2013 Jan 17.

Author

Alexander C Gagnon¹

Affiliation

¹ Earth Sciences Division and Molecular Foundry, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA. acgagnon@lbl.gov

PMID: 23329329
PMCID: PMC3562801
DOI: 10.1073/pnas.1221308110

No abstract available

PubMed Disclaimer

Conflict of interest statement

The author declares no conflict of interest.

Figures

Fig. 1. — Fig. 1.
Coral calcifying fluid pH decreases with ocean acidification, as shown by Venn et al. (3) from direct pH measurements in the tropical coral S. pistillata (blue boxes), and as inferred from previous boron isotope measurements (–10). Boron isotope data from S. pistillata (yellow boxes) and other tropical species (yellow diamonds) roughly agree with direct measurements, whereas deep-sea coral (orange circles) are characterized by higher calcifying fluid pH values and lower sensitivity to seawater pH. Compared with seawater (dashed line), tropical coral calcifying fluid pH is more offset under more acidified conditions. Calcifying fluid pH calculated from boron isotope data using an δ¹¹B of total boron of 39.16 ‰, a fractionation of 1.0272, and with pK_B set by temperature and salinity. Total pH scale is used throughout.

See this image and copyright information in PMC

Comment on

Impact of seawater acidification on pH at the tissue-skeleton interface and calcification in reef corals.
Venn AA, Tambutté E, Holcomb M, Laurent J, Allemand D, Tambutté S. Venn AA, et al. Proc Natl Acad Sci U S A. 2013 Jan 29;110(5):1634-9. doi: 10.1073/pnas.1216153110. Epub 2012 Dec 31. Proc Natl Acad Sci U S A. 2013. PMID: 23277567 Free PMC article.

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