Microelectrode characterization of coral daytime interior pH and carbonate chemistry

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dc.contributor.authorCai, Wei-Jun
dc.contributor.authorMa, Yuening
dc.contributor.authorHopkinson, Brian M.
dc.contributor.authorGrottoli, Andréa G.
dc.contributor.authorWarner, Mark E.
dc.contributor.authorDing, Qian
dc.contributor.authorHu, Xinping
dc.contributor.authorYuan, Xiangchen
dc.contributor.authorSchoepf, Verena
dc.contributor.authorXu, Hui
dc.contributor.authorHan, Chenhua
dc.contributor.authorMelman, Todd F.
dc.contributor.authorHoadley, Kenneth D.
dc.contributor.authorPettay, D. Tye
dc.contributor.authorMatsui, Yohei
dc.contributor.authorBaumann, Justin H.
dc.contributor.authorLevas, Stephen
dc.contributor.authorYing, Ye
dc.contributor.authorWang, Yongchen
dc.date.accessioned2021-01-12T18:28:39Z
dc.date.available2021-01-12T18:28:39Z
dc.date.issued2016-04-04
dc.description.abstractReliably predicting how coral calcification may respond to ocean acidification and warming depends on our understanding of coral calcification mechanisms. However, the concentration and speciation of dissolved inorganic carbon (DIC) inside corals remain unclear, as only pH has been measured while a necessary second parameter to constrain carbonate chemistry has been missing. Here we report the first carbonate ion concentration ([CO32−]) measurements together with pH inside corals during the light period. We observe sharp increases in [CO32−] and pH from the gastric cavity to the calcifying fluid, confirming the existence of a proton (H+) pumping mechanism. We also show that corals can achieve a high aragonite saturation state (Ωarag) in the calcifying fluid by elevating pH while at the same time keeping [DIC] low. Such a mechanism may require less H+-pumping and energy for upregulating pH compared with the high [DIC] scenario and thus may allow corals to be more resistant to climate change related stressors.en_US
dc.identifier.citationCai, WJ., Ma, Y., Hopkinson, B. et al. Microelectrode characterization of coral daytime interior pH and carbonate chemistry. Nat Commun 7, 11144 (2016). https://doi.org/10.1038/ncomms11144en_US
dc.identifier.doihttps://doi.org/10.1038/ncomms11144
dc.identifier.urihttps://hdl.handle.net/1969.6/89416
dc.titleMicroelectrode characterization of coral daytime interior pH and carbonate chemistryen_US
dc.typeArticleen_US

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