Coral calcification in a changing World and the interactive dynamics of pH and DIC upregulation
Coral calcification is dependent on the mutualistic partnership between endosymbiotic zooxanthellae and the coral host. Here, using newly developed geochemical proxies (δ11B and B/Ca), we show that Porites corals from natural reef environments exhibit a close (r2 ∼0.9) antithetic relationship betwee...
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ftpubmed:oai:pubmedcentral.nih.gov:5499203 2023-05-15T17:51:09+02:00 Coral calcification in a changing World and the interactive dynamics of pH and DIC upregulation McCulloch, Malcolm T. D’Olivo, Juan Pablo Falter, James Holcomb, Michael Trotter, Julie A. 2017-05-30 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5499203/ http://www.ncbi.nlm.nih.gov/pubmed/28555644 https://doi.org/10.1038/ncomms15686 en eng Nature Publishing Group http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5499203/ http://www.ncbi.nlm.nih.gov/pubmed/28555644 http://dx.doi.org/10.1038/ncomms15686 Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ CC-BY Article Text 2017 ftpubmed https://doi.org/10.1038/ncomms15686 2017-07-16T00:11:27Z Coral calcification is dependent on the mutualistic partnership between endosymbiotic zooxanthellae and the coral host. Here, using newly developed geochemical proxies (δ11B and B/Ca), we show that Porites corals from natural reef environments exhibit a close (r2 ∼0.9) antithetic relationship between dissolved inorganic carbon (DIC) and pH of the corals’ calcifying fluid (cf). The highest DICcf (∼ × 3.2 seawater) is found during summer, consistent with thermal/light enhancement of metabolically (zooxanthellae) derived carbon, while the highest pHcf (∼8.5) occurs in winter during periods of low DICcf (∼ × 2 seawater). These opposing changes in DICcf and pHcf are shown to maintain oversaturated but stable levels of carbonate saturation (Ωcf ∼ × 5 seawater), the key parameter controlling coral calcification. These findings are in marked contrast to artificial experiments and show that pHcf upregulation occurs largely independent of changes in seawater carbonate chemistry, and hence ocean acidification, but is highly vulnerable to thermally induced stress from global warming. Text Ocean acidification PubMed Central (PMC) Nature Communications 8 1 |
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Article McCulloch, Malcolm T. D’Olivo, Juan Pablo Falter, James Holcomb, Michael Trotter, Julie A. Coral calcification in a changing World and the interactive dynamics of pH and DIC upregulation |
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Coral calcification is dependent on the mutualistic partnership between endosymbiotic zooxanthellae and the coral host. Here, using newly developed geochemical proxies (δ11B and B/Ca), we show that Porites corals from natural reef environments exhibit a close (r2 ∼0.9) antithetic relationship between dissolved inorganic carbon (DIC) and pH of the corals’ calcifying fluid (cf). The highest DICcf (∼ × 3.2 seawater) is found during summer, consistent with thermal/light enhancement of metabolically (zooxanthellae) derived carbon, while the highest pHcf (∼8.5) occurs in winter during periods of low DICcf (∼ × 2 seawater). These opposing changes in DICcf and pHcf are shown to maintain oversaturated but stable levels of carbonate saturation (Ωcf ∼ × 5 seawater), the key parameter controlling coral calcification. These findings are in marked contrast to artificial experiments and show that pHcf upregulation occurs largely independent of changes in seawater carbonate chemistry, and hence ocean acidification, but is highly vulnerable to thermally induced stress from global warming. |
format |
Text |
author |
McCulloch, Malcolm T. D’Olivo, Juan Pablo Falter, James Holcomb, Michael Trotter, Julie A. |
author_facet |
McCulloch, Malcolm T. D’Olivo, Juan Pablo Falter, James Holcomb, Michael Trotter, Julie A. |
author_sort |
McCulloch, Malcolm T. |
title |
Coral calcification in a changing World and the interactive dynamics of pH and DIC upregulation |
title_short |
Coral calcification in a changing World and the interactive dynamics of pH and DIC upregulation |
title_full |
Coral calcification in a changing World and the interactive dynamics of pH and DIC upregulation |
title_fullStr |
Coral calcification in a changing World and the interactive dynamics of pH and DIC upregulation |
title_full_unstemmed |
Coral calcification in a changing World and the interactive dynamics of pH and DIC upregulation |
title_sort |
coral calcification in a changing world and the interactive dynamics of ph and dic upregulation |
publisher |
Nature Publishing Group |
publishDate |
2017 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5499203/ http://www.ncbi.nlm.nih.gov/pubmed/28555644 https://doi.org/10.1038/ncomms15686 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5499203/ http://www.ncbi.nlm.nih.gov/pubmed/28555644 http://dx.doi.org/10.1038/ncomms15686 |
op_rights |
Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
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CC-BY |
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https://doi.org/10.1038/ncomms15686 |
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Nature Communications |
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8 |
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