Progressive seawater acidification on the Great Barrier Reef continental shelf
Coral reefs are highly sensitive to ocean acidification due to rising atmospheric CO(2) concentrations. We present 10 years of data (2009–2019) on the long-term trends and sources of variation in the carbon chemistry from two fixed stations in the Australian Great Barrier Reef. Data from the subtrop...
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ftpubmed:oai:pubmedcentral.nih.gov:7592051 2023-05-15T17:50:29+02:00 Progressive seawater acidification on the Great Barrier Reef continental shelf Fabricius, Katharina E. Neill, Craig Van Ooijen, Erik Smith, Joy N. Tilbrook, Bronte 2020-10-27 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7592051/ https://doi.org/10.1038/s41598-020-75293-1 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7592051/ http://dx.doi.org/10.1038/s41598-020-75293-1 © The Author(s) 2020 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. CC-BY Sci Rep Article Text 2020 ftpubmed https://doi.org/10.1038/s41598-020-75293-1 2020-11-01T02:03:53Z Coral reefs are highly sensitive to ocean acidification due to rising atmospheric CO(2) concentrations. We present 10 years of data (2009–2019) on the long-term trends and sources of variation in the carbon chemistry from two fixed stations in the Australian Great Barrier Reef. Data from the subtropical mid-shelf GBRWIS comprised 3-h instrument records, and those from the tropical coastal NRSYON were monthly seawater samples. Both stations recorded significant variation in seawater CO(2) fugacity (fCO(2)), attributable to seasonal, daytime, temperature and salinity fluctuations. Superimposed over this variation, fCO(2) progressively increased by > 2.0 ± 0.3 µatm year(−1) at both stations. Seawater temperature and salinity also increased throughout the decade, whereas seawater pH and the saturation state of aragonite declined. The decadal upward fCO(2) trend remained significant in temperature- and salinity-normalised data. Indeed, annual fCO(2) minima are now higher than estimated fCO(2) maxima in the early 1960s, with mean fCO(2) now ~ 28% higher than 60 years ago. Our data indicate that carbonate dissolution from the seafloor is currently unable to buffer the Great Barrier Reef against ocean acidification. This is of great concern for the thousands of coral reefs and other diverse marine ecosystems located in this vast continental shelf system. Text Ocean acidification PubMed Central (PMC) Scientific Reports 10 1 |
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Article Fabricius, Katharina E. Neill, Craig Van Ooijen, Erik Smith, Joy N. Tilbrook, Bronte Progressive seawater acidification on the Great Barrier Reef continental shelf |
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description |
Coral reefs are highly sensitive to ocean acidification due to rising atmospheric CO(2) concentrations. We present 10 years of data (2009–2019) on the long-term trends and sources of variation in the carbon chemistry from two fixed stations in the Australian Great Barrier Reef. Data from the subtropical mid-shelf GBRWIS comprised 3-h instrument records, and those from the tropical coastal NRSYON were monthly seawater samples. Both stations recorded significant variation in seawater CO(2) fugacity (fCO(2)), attributable to seasonal, daytime, temperature and salinity fluctuations. Superimposed over this variation, fCO(2) progressively increased by > 2.0 ± 0.3 µatm year(−1) at both stations. Seawater temperature and salinity also increased throughout the decade, whereas seawater pH and the saturation state of aragonite declined. The decadal upward fCO(2) trend remained significant in temperature- and salinity-normalised data. Indeed, annual fCO(2) minima are now higher than estimated fCO(2) maxima in the early 1960s, with mean fCO(2) now ~ 28% higher than 60 years ago. Our data indicate that carbonate dissolution from the seafloor is currently unable to buffer the Great Barrier Reef against ocean acidification. This is of great concern for the thousands of coral reefs and other diverse marine ecosystems located in this vast continental shelf system. |
format |
Text |
author |
Fabricius, Katharina E. Neill, Craig Van Ooijen, Erik Smith, Joy N. Tilbrook, Bronte |
author_facet |
Fabricius, Katharina E. Neill, Craig Van Ooijen, Erik Smith, Joy N. Tilbrook, Bronte |
author_sort |
Fabricius, Katharina E. |
title |
Progressive seawater acidification on the Great Barrier Reef continental shelf |
title_short |
Progressive seawater acidification on the Great Barrier Reef continental shelf |
title_full |
Progressive seawater acidification on the Great Barrier Reef continental shelf |
title_fullStr |
Progressive seawater acidification on the Great Barrier Reef continental shelf |
title_full_unstemmed |
Progressive seawater acidification on the Great Barrier Reef continental shelf |
title_sort |
progressive seawater acidification on the great barrier reef continental shelf |
publisher |
Nature Publishing Group UK |
publishDate |
2020 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7592051/ https://doi.org/10.1038/s41598-020-75293-1 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC7592051/ http://dx.doi.org/10.1038/s41598-020-75293-1 |
op_rights |
© The Author(s) 2020 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/. |
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CC-BY |
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https://doi.org/10.1038/s41598-020-75293-1 |
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Scientific Reports |
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