Coral calcification mechanisms facilitate adaptive responses to ocean acidification
Ocean acidification (OA) is a pressing threat to reef-building corals, but it remains poorly understood how coral calcification is inhibited by OA and whether corals could acclimatize and/or adapt to OA. Using a novel geochemical approach, we reconstructed the carbonate chemistry of the calcifying f...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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crroyalsociety:10.1098/rspb.2017.2117 2024-09-09T20:01:16+00:00 Coral calcification mechanisms facilitate adaptive responses to ocean acidification Schoepf, Verena Jury, Christopher P. Toonen, Robert J. McCulloch, Malcolm T. 2017 http://dx.doi.org/10.1098/rspb.2017.2117 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2017.2117 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2017.2117 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society B: Biological Sciences volume 284, issue 1868, page 20172117 ISSN 0962-8452 1471-2954 journal-article 2017 crroyalsociety https://doi.org/10.1098/rspb.2017.2117 2024-08-12T04:27:44Z Ocean acidification (OA) is a pressing threat to reef-building corals, but it remains poorly understood how coral calcification is inhibited by OA and whether corals could acclimatize and/or adapt to OA. Using a novel geochemical approach, we reconstructed the carbonate chemistry of the calcifying fluid in two coral species using both a pH and dissolved inorganic carbon (DIC) proxy (δ 11 B and B/Ca, respectively). To address the potential for adaptive responses, both species were collected from two sites spanning a natural gradient in seawater pH and temperature, and then subjected to three pH T levels (8.04, 7.88, 7.71) crossed by two temperatures (control, +1.5°C) for 14 weeks. Corals from the site with naturally lower seawater pH calcified faster and maintained growth better under simulated OA than corals from the higher-pH site. This ability was consistently linked to higher pH yet lower DIC values in the calcifying fluid, suggesting that these differences are the result of long-term acclimatization and/or local adaptation to naturally lower seawater pH. Nevertheless, all corals elevated both pH and DIC significantly over seawater values, even under OA. This implies that high pH upregulation combined with moderate levels of DIC upregulation promote resistance and adaptive responses of coral calcification to OA. Article in Journal/Newspaper Ocean acidification The Royal Society Proceedings of the Royal Society B: Biological Sciences 284 1868 20172117 |
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The Royal Society |
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crroyalsociety |
language |
English |
description |
Ocean acidification (OA) is a pressing threat to reef-building corals, but it remains poorly understood how coral calcification is inhibited by OA and whether corals could acclimatize and/or adapt to OA. Using a novel geochemical approach, we reconstructed the carbonate chemistry of the calcifying fluid in two coral species using both a pH and dissolved inorganic carbon (DIC) proxy (δ 11 B and B/Ca, respectively). To address the potential for adaptive responses, both species were collected from two sites spanning a natural gradient in seawater pH and temperature, and then subjected to three pH T levels (8.04, 7.88, 7.71) crossed by two temperatures (control, +1.5°C) for 14 weeks. Corals from the site with naturally lower seawater pH calcified faster and maintained growth better under simulated OA than corals from the higher-pH site. This ability was consistently linked to higher pH yet lower DIC values in the calcifying fluid, suggesting that these differences are the result of long-term acclimatization and/or local adaptation to naturally lower seawater pH. Nevertheless, all corals elevated both pH and DIC significantly over seawater values, even under OA. This implies that high pH upregulation combined with moderate levels of DIC upregulation promote resistance and adaptive responses of coral calcification to OA. |
format |
Article in Journal/Newspaper |
author |
Schoepf, Verena Jury, Christopher P. Toonen, Robert J. McCulloch, Malcolm T. |
spellingShingle |
Schoepf, Verena Jury, Christopher P. Toonen, Robert J. McCulloch, Malcolm T. Coral calcification mechanisms facilitate adaptive responses to ocean acidification |
author_facet |
Schoepf, Verena Jury, Christopher P. Toonen, Robert J. McCulloch, Malcolm T. |
author_sort |
Schoepf, Verena |
title |
Coral calcification mechanisms facilitate adaptive responses to ocean acidification |
title_short |
Coral calcification mechanisms facilitate adaptive responses to ocean acidification |
title_full |
Coral calcification mechanisms facilitate adaptive responses to ocean acidification |
title_fullStr |
Coral calcification mechanisms facilitate adaptive responses to ocean acidification |
title_full_unstemmed |
Coral calcification mechanisms facilitate adaptive responses to ocean acidification |
title_sort |
coral calcification mechanisms facilitate adaptive responses to ocean acidification |
publisher |
The Royal Society |
publishDate |
2017 |
url |
http://dx.doi.org/10.1098/rspb.2017.2117 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2017.2117 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2017.2117 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 284, issue 1868, page 20172117 ISSN 0962-8452 1471-2954 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspb.2017.2117 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
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284 |
container_issue |
1868 |
container_start_page |
20172117 |
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1809933072619012096 |