Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability
Ocean acidification is a threat to the continued accretion of coral reefs, though some undergo daily fluctuations in pH exceeding declines predicted by 2100. We test whether exposure to greater pH variability enhances resistance to ocean acidification for the coral Goniopora sp. and coralline alga H...
Published in: | Proceedings of the Royal Society B: Biological Sciences |
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crroyalsociety:10.1098/rspb.2018.1168 2024-09-15T18:27:35+00:00 Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability Cornwall, C. E. Comeau, S. DeCarlo, T. M. Moore, B. D'Alexis, Q. McCulloch, M. T. Australian Research Council 2018 http://dx.doi.org/10.1098/rspb.2018.1168 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2018.1168 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2018.1168 en eng The Royal Society https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ Proceedings of the Royal Society B: Biological Sciences volume 285, issue 1884, page 20181168 ISSN 0962-8452 1471-2954 journal-article 2018 crroyalsociety https://doi.org/10.1098/rspb.2018.1168 2024-08-05T04:35:29Z Ocean acidification is a threat to the continued accretion of coral reefs, though some undergo daily fluctuations in pH exceeding declines predicted by 2100. We test whether exposure to greater pH variability enhances resistance to ocean acidification for the coral Goniopora sp. and coralline alga Hydrolithon reinboldii from two sites: one with low pH variability (less than 0.15 units daily; Shell Island) and a site with high pH variability (up to 1.4 pH units daily; Tallon Island). We grew populations of both species for more than 100 days under a combination of differing pH variability (high/low) and means (ambient pH 8.05/ocean acidification pH 7.65). Calcification rates of Goniopora sp. were unaffected by the examined variables. Calcification rates of H. reinboldii were significantly faster in Tallon than in Shell Island individuals, and Tallon Island individuals calcified faster in the high variability pH 8.05 treatment compared with all others. Geochemical proxies for carbonate chemistry within the calcifying fluid (cf) of both species indicated that only mean seawater pH influenced pH cf . pH treatments had no effect on proxies for Ω cf . These limited responses to extreme pH treatments demonstrate that some calcifying taxa may be capable of maintaining constant rates of calcification under ocean acidification by actively modifying Ω cf . Article in Journal/Newspaper Ocean acidification The Royal Society Proceedings of the Royal Society B: Biological Sciences 285 1884 20181168 |
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Open Polar |
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The Royal Society |
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crroyalsociety |
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English |
description |
Ocean acidification is a threat to the continued accretion of coral reefs, though some undergo daily fluctuations in pH exceeding declines predicted by 2100. We test whether exposure to greater pH variability enhances resistance to ocean acidification for the coral Goniopora sp. and coralline alga Hydrolithon reinboldii from two sites: one with low pH variability (less than 0.15 units daily; Shell Island) and a site with high pH variability (up to 1.4 pH units daily; Tallon Island). We grew populations of both species for more than 100 days under a combination of differing pH variability (high/low) and means (ambient pH 8.05/ocean acidification pH 7.65). Calcification rates of Goniopora sp. were unaffected by the examined variables. Calcification rates of H. reinboldii were significantly faster in Tallon than in Shell Island individuals, and Tallon Island individuals calcified faster in the high variability pH 8.05 treatment compared with all others. Geochemical proxies for carbonate chemistry within the calcifying fluid (cf) of both species indicated that only mean seawater pH influenced pH cf . pH treatments had no effect on proxies for Ω cf . These limited responses to extreme pH treatments demonstrate that some calcifying taxa may be capable of maintaining constant rates of calcification under ocean acidification by actively modifying Ω cf . |
author2 |
Australian Research Council |
format |
Article in Journal/Newspaper |
author |
Cornwall, C. E. Comeau, S. DeCarlo, T. M. Moore, B. D'Alexis, Q. McCulloch, M. T. |
spellingShingle |
Cornwall, C. E. Comeau, S. DeCarlo, T. M. Moore, B. D'Alexis, Q. McCulloch, M. T. Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability |
author_facet |
Cornwall, C. E. Comeau, S. DeCarlo, T. M. Moore, B. D'Alexis, Q. McCulloch, M. T. |
author_sort |
Cornwall, C. E. |
title |
Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability |
title_short |
Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability |
title_full |
Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability |
title_fullStr |
Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability |
title_full_unstemmed |
Resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural pH variability |
title_sort |
resistance of corals and coralline algae to ocean acidification: physiological control of calcification under natural ph variability |
publisher |
The Royal Society |
publishDate |
2018 |
url |
http://dx.doi.org/10.1098/rspb.2018.1168 https://royalsocietypublishing.org/doi/pdf/10.1098/rspb.2018.1168 https://royalsocietypublishing.org/doi/full-xml/10.1098/rspb.2018.1168 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Proceedings of the Royal Society B: Biological Sciences volume 285, issue 1884, page 20181168 ISSN 0962-8452 1471-2954 |
op_rights |
https://royalsociety.org/journals/ethics-policies/data-sharing-mining/ |
op_doi |
https://doi.org/10.1098/rspb.2018.1168 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
container_volume |
285 |
container_issue |
1884 |
container_start_page |
20181168 |
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1810468817383456768 |