Cargando…

Rapid decline in pH of coral calcification fluid due to incorporation of anthropogenic CO(2)

Marine calcifying organisms, such as stony corals, are under threat by rapid ocean acidification (OA) arising from the oceanic uptake of anthropogenic CO(2). To better understand how organisms and ecosystems will adapt to or be damaged by the resulting environmental changes, field observations are c...

Descripción completa

Detalles Bibliográficos
Autores principales: Kubota, Kaoru, Yokoyama, Yusuke, Ishikawa, Tsuyoshi, Suzuki, Atsushi, Ishii, Masao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5550433/
https://www.ncbi.nlm.nih.gov/pubmed/28794507
http://dx.doi.org/10.1038/s41598-017-07680-0
_version_ 1783256125411426304
author Kubota, Kaoru
Yokoyama, Yusuke
Ishikawa, Tsuyoshi
Suzuki, Atsushi
Ishii, Masao
author_facet Kubota, Kaoru
Yokoyama, Yusuke
Ishikawa, Tsuyoshi
Suzuki, Atsushi
Ishii, Masao
author_sort Kubota, Kaoru
collection PubMed
description Marine calcifying organisms, such as stony corals, are under threat by rapid ocean acidification (OA) arising from the oceanic uptake of anthropogenic CO(2). To better understand how organisms and ecosystems will adapt to or be damaged by the resulting environmental changes, field observations are crucial. Here, we show clear evidence, based on boron isotopic ratio (δ(11)B) measurements, that OA is affecting the pH of the calcification fluid (pH(CF)) in Porites corals within the western North Pacific Subtropical Gyre at two separate locations, Chichijima Island (Ogasawara Archipelago) and Kikaijima Island. Corals from each location have displayed a rapid decline in δ(11)B since 1960. A comparison with the pH of the ambient seawater (pH(SW)) near these islands, estimated from a large number of shipboard measurements of seawater CO(2) chemistry and atmospheric CO(2), indicates that pH(CF) is sensitive to changes in pH(SW.) This suggests that the calcification fluid of corals will become less supersaturated with respect to aragonite by the middle of this century (pH(CF) = ~8.3 when pH(SW) = ~8.0 in 2050), earlier than previously expected, despite the pH(CF)-upregulating mechanism of corals.
format Online
Article
Text
id pubmed-5550433
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher Nature Publishing Group UK
record_format MEDLINE/PubMed
spelling pubmed-55504332017-08-11 Rapid decline in pH of coral calcification fluid due to incorporation of anthropogenic CO(2) Kubota, Kaoru Yokoyama, Yusuke Ishikawa, Tsuyoshi Suzuki, Atsushi Ishii, Masao Sci Rep Article Marine calcifying organisms, such as stony corals, are under threat by rapid ocean acidification (OA) arising from the oceanic uptake of anthropogenic CO(2). To better understand how organisms and ecosystems will adapt to or be damaged by the resulting environmental changes, field observations are crucial. Here, we show clear evidence, based on boron isotopic ratio (δ(11)B) measurements, that OA is affecting the pH of the calcification fluid (pH(CF)) in Porites corals within the western North Pacific Subtropical Gyre at two separate locations, Chichijima Island (Ogasawara Archipelago) and Kikaijima Island. Corals from each location have displayed a rapid decline in δ(11)B since 1960. A comparison with the pH of the ambient seawater (pH(SW)) near these islands, estimated from a large number of shipboard measurements of seawater CO(2) chemistry and atmospheric CO(2), indicates that pH(CF) is sensitive to changes in pH(SW.) This suggests that the calcification fluid of corals will become less supersaturated with respect to aragonite by the middle of this century (pH(CF) = ~8.3 when pH(SW) = ~8.0 in 2050), earlier than previously expected, despite the pH(CF)-upregulating mechanism of corals. Nature Publishing Group UK 2017-08-09 /pmc/articles/PMC5550433/ /pubmed/28794507 http://dx.doi.org/10.1038/s41598-017-07680-0 Text en © The Author(s) 2017 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/.
spellingShingle Article
Kubota, Kaoru
Yokoyama, Yusuke
Ishikawa, Tsuyoshi
Suzuki, Atsushi
Ishii, Masao
Rapid decline in pH of coral calcification fluid due to incorporation of anthropogenic CO(2)
title Rapid decline in pH of coral calcification fluid due to incorporation of anthropogenic CO(2)
title_full Rapid decline in pH of coral calcification fluid due to incorporation of anthropogenic CO(2)
title_fullStr Rapid decline in pH of coral calcification fluid due to incorporation of anthropogenic CO(2)
title_full_unstemmed Rapid decline in pH of coral calcification fluid due to incorporation of anthropogenic CO(2)
title_short Rapid decline in pH of coral calcification fluid due to incorporation of anthropogenic CO(2)
title_sort rapid decline in ph of coral calcification fluid due to incorporation of anthropogenic co(2)
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5550433/
https://www.ncbi.nlm.nih.gov/pubmed/28794507
http://dx.doi.org/10.1038/s41598-017-07680-0
work_keys_str_mv AT kubotakaoru rapiddeclineinphofcoralcalcificationfluidduetoincorporationofanthropogenicco2
AT yokoyamayusuke rapiddeclineinphofcoralcalcificationfluidduetoincorporationofanthropogenicco2
AT ishikawatsuyoshi rapiddeclineinphofcoralcalcificationfluidduetoincorporationofanthropogenicco2
AT suzukiatsushi rapiddeclineinphofcoralcalcificationfluidduetoincorporationofanthropogenicco2
AT ishiimasao rapiddeclineinphofcoralcalcificationfluidduetoincorporationofanthropogenicco2