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pH homeostasis during coral calcification in a free ocean CO2 enrichment (FOCE) experiment, Heron Island reef flat, Great Barrier Reef
Georgiou, L.; Falter, J.; Trotter, J.; Kline, D.I.; Holcomb, M.; Dove, S.G.; Hoegh-Guldberg, O.; McCulloch, M. (2015). pH homeostasis during coral calcification in a free ocean CO2 enrichment (FOCE) experiment, Heron Island reef flat, Great Barrier Reef. Proc. Natl. Acad. Sci. U.S.A. 112(43): 13219-13224. hdl.handle.net/10.1073/pnas.1505586112
In: Proceedings of the National Academy of Sciences of the United States of America. The Academy: Washington, D.C.. ISSN 0027-8424, more
Peer reviewed article  

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Keyword
    Marine

Authors  Top 
  • Georgiou, L.
  • Falter, J.
  • Trotter, J.
  • Kline, D.I.
  • Holcomb, M.
  • Dove, S.G.
  • Hoegh-Guldberg, O.
  • McCulloch, M.

Abstract
    In situ free ocean CO2 enrichment (FOCE) experiments and geochemical analyses (d11B, Sr/Ca) conducted on corals (Porites cylindrica) from the highly dynamic Heron Island reef flat of the Great Barrier Reef show that this species exerts strong physiological controls on the pH of their calcifying fluid (pHcf). Over an ~6-mo period, from mid-winter to early summer, we show that these corals maintained their pHcf at near constant elevated levels independent of the highly variable temperatures and FOCE-controlled carbonate chemistries to which they were exposed, implying they have a high degree of tolerance to ocean acidification.

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