Impacts of Warming and Acidification on Coral Calcification Linked to Photosymbiont Loss and Deregulation of Calcifying Fluid pH
International audience Corals are globally important calcifiers that exhibit complex responses to anthropogenic warming and acidification. Although coral calcification is supported by high seawater pH, photosynthesis by the algal symbionts of zooxanthellate corals can be promoted by elevated pCO2. T...
Published in: | Journal of Marine Science and Engineering |
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Main Authors: | , , , , , , , , , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2022
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Online Access: | https://hal.univ-brest.fr/hal-04159144 https://hal.univ-brest.fr/hal-04159144/document https://hal.univ-brest.fr/hal-04159144/file/Impacts%20of%20Warming%20and%20Acidification%20on%20Coral%20Calcification%20Lic%20CCby.pdf https://doi.org/10.3390/jmse10081106 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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language |
English |
topic |
Cameron Louise P. Reymond Claire E. Bijma Jelle Büscher Janina V. De Beer Dirk Guillermic Maxence Eagle Robert A. Gunnell John Müller-Lundin Fiona Schmidt-Grieb Gertraud M. Westfield Isaac Westphal Hildegard Ries Justin B. Citation Cameron L. P Reymond C. E Bijma J Büscher J. V De Beer D Guillermic M Eagle R. A Gunnell Müller-Lundin F Schmidt-Grieb G. M Westfield I Westphal H & Ries Louise P Claire E Jelle Janina V Dirk Maxence Robert A John Fiona Gertraud M Isaac Hildegard Ries |
spellingShingle |
Cameron Louise P. Reymond Claire E. Bijma Jelle Büscher Janina V. De Beer Dirk Guillermic Maxence Eagle Robert A. Gunnell John Müller-Lundin Fiona Schmidt-Grieb Gertraud M. Westfield Isaac Westphal Hildegard Ries Justin B. Citation Cameron L. P Reymond C. E Bijma J Büscher J. V De Beer D Guillermic M Eagle R. A Gunnell Müller-Lundin F Schmidt-Grieb G. M Westfield I Westphal H & Ries Louise P Claire E Jelle Janina V Dirk Maxence Robert A John Fiona Gertraud M Isaac Hildegard Ries Cameron, Louise, Reymond, Claire, Bijma, Jelle Büscher, Janina, de Beer, Dirk Guillermic, Maxence Eagle, Robert, Gunnell, John Müller-Lundin, Fiona Schmidt-Grieb, Gertraud, Westfield, Isaac Westphal, Hildegard Ries, Justin Impacts of Warming and Acidification on Coral Calcification Linked to Photosymbiont Loss and Deregulation of Calcifying Fluid pH |
topic_facet |
Cameron Louise P. Reymond Claire E. Bijma Jelle Büscher Janina V. De Beer Dirk Guillermic Maxence Eagle Robert A. Gunnell John Müller-Lundin Fiona Schmidt-Grieb Gertraud M. Westfield Isaac Westphal Hildegard Ries Justin B. Citation Cameron L. P Reymond C. E Bijma J Büscher J. V De Beer D Guillermic M Eagle R. A Gunnell Müller-Lundin F Schmidt-Grieb G. M Westfield I Westphal H & Ries Louise P Claire E Jelle Janina V Dirk Maxence Robert A John Fiona Gertraud M Isaac Hildegard Ries |
description |
International audience Corals are globally important calcifiers that exhibit complex responses to anthropogenic warming and acidification. Although coral calcification is supported by high seawater pH, photosynthesis by the algal symbionts of zooxanthellate corals can be promoted by elevated pCO2. To investigate the mechanisms underlying corals’ complex responses to global change, three species of tropical zooxanthellate corals (Stylophora pistillata, Pocillopora damicornis, and Seriatopora hystrix) and one species of asymbiotic cold-water coral (Desmophyllum pertusum, syn. Lophelia pertusa) were cultured under a range of ocean acidification and warming scenarios. Under control temperatures, all tropical species exhibited increased calcification rates in response to increasing pCO2. However, the tropical species’ response to increasing pCO2 flattened when they lost symbionts (i.e., bleached) under the high-temperature treatments—suggesting that the loss of symbionts neutralized the benefit of increased pCO2 on calcification rate. Notably, the cold-water species that lacks symbionts exhibited a negative calcification response to increasing pCO2, although this negative response was partially ameliorated under elevated temperature. All four species elevated their calcifying fluid pH relative to seawater pH under all pCO2 treatments, and the magnitude of this offset (Δ[H+]) increased with increasing pCO2. Furthermore, calcifying fluid pH decreased along with symbiont abundance under thermal stress for the one species in which calcifying fluid pH was measured under both temperature treatments. This observation suggests a mechanistic link between photosymbiont loss (‘bleaching’) and impairment of zooxanthellate corals’ ability to elevate calcifying fluid pH in support of calcification under heat stress. This study supports the assertion that thermally induced loss of photosymbionts impairs tropical zooxanthellate corals’ ability to cope with CO2-induced ocean acidification. © 2022 by the authors. |
author2 |
Leibniz Centre for Tropical Marine Research (ZMT) ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) |
format |
Article in Journal/Newspaper |
author |
Cameron, Louise, Reymond, Claire, Bijma, Jelle Büscher, Janina, de Beer, Dirk Guillermic, Maxence Eagle, Robert, Gunnell, John Müller-Lundin, Fiona Schmidt-Grieb, Gertraud, Westfield, Isaac Westphal, Hildegard Ries, Justin |
author_facet |
Cameron, Louise, Reymond, Claire, Bijma, Jelle Büscher, Janina, de Beer, Dirk Guillermic, Maxence Eagle, Robert, Gunnell, John Müller-Lundin, Fiona Schmidt-Grieb, Gertraud, Westfield, Isaac Westphal, Hildegard Ries, Justin |
author_sort |
Cameron, Louise, |
title |
Impacts of Warming and Acidification on Coral Calcification Linked to Photosymbiont Loss and Deregulation of Calcifying Fluid pH |
title_short |
Impacts of Warming and Acidification on Coral Calcification Linked to Photosymbiont Loss and Deregulation of Calcifying Fluid pH |
title_full |
Impacts of Warming and Acidification on Coral Calcification Linked to Photosymbiont Loss and Deregulation of Calcifying Fluid pH |
title_fullStr |
Impacts of Warming and Acidification on Coral Calcification Linked to Photosymbiont Loss and Deregulation of Calcifying Fluid pH |
title_full_unstemmed |
Impacts of Warming and Acidification on Coral Calcification Linked to Photosymbiont Loss and Deregulation of Calcifying Fluid pH |
title_sort |
impacts of warming and acidification on coral calcification linked to photosymbiont loss and deregulation of calcifying fluid ph |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.univ-brest.fr/hal-04159144 https://hal.univ-brest.fr/hal-04159144/document https://hal.univ-brest.fr/hal-04159144/file/Impacts%20of%20Warming%20and%20Acidification%20on%20Coral%20Calcification%20Lic%20CCby.pdf https://doi.org/10.3390/jmse10081106 |
long_lat |
ENVELOPE(-57.917,-57.917,-63.317,-63.317) |
geographic |
Hildegard |
geographic_facet |
Hildegard |
genre |
Lophelia pertusa Ocean acidification |
genre_facet |
Lophelia pertusa Ocean acidification |
op_source |
ISSN: 2077-1312 Journal of Marine Science and Engineering https://hal.univ-brest.fr/hal-04159144 Journal of Marine Science and Engineering, 2022, 10, ⟨10.3390/jmse10081106⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/jmse10081106 hal-04159144 https://hal.univ-brest.fr/hal-04159144 https://hal.univ-brest.fr/hal-04159144/document https://hal.univ-brest.fr/hal-04159144/file/Impacts%20of%20Warming%20and%20Acidification%20on%20Coral%20Calcification%20Lic%20CCby.pdf doi:10.3390/jmse10081106 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3390/jmse10081106 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
10 |
container_issue |
8 |
container_start_page |
1106 |
_version_ |
1772816380880486400 |
spelling |
ftccsdartic:oai:HAL:hal-04159144v1 2023-07-30T04:04:47+02:00 Impacts of Warming and Acidification on Coral Calcification Linked to Photosymbiont Loss and Deregulation of Calcifying Fluid pH Cameron, Louise, Reymond, Claire, Bijma, Jelle Büscher, Janina, de Beer, Dirk Guillermic, Maxence Eagle, Robert, Gunnell, John Müller-Lundin, Fiona Schmidt-Grieb, Gertraud, Westfield, Isaac Westphal, Hildegard Ries, Justin Leibniz Centre for Tropical Marine Research (ZMT) ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) 2022-08-12 https://hal.univ-brest.fr/hal-04159144 https://hal.univ-brest.fr/hal-04159144/document https://hal.univ-brest.fr/hal-04159144/file/Impacts%20of%20Warming%20and%20Acidification%20on%20Coral%20Calcification%20Lic%20CCby.pdf https://doi.org/10.3390/jmse10081106 en eng HAL CCSD MDPI info:eu-repo/semantics/altIdentifier/doi/10.3390/jmse10081106 hal-04159144 https://hal.univ-brest.fr/hal-04159144 https://hal.univ-brest.fr/hal-04159144/document https://hal.univ-brest.fr/hal-04159144/file/Impacts%20of%20Warming%20and%20Acidification%20on%20Coral%20Calcification%20Lic%20CCby.pdf doi:10.3390/jmse10081106 info:eu-repo/semantics/OpenAccess ISSN: 2077-1312 Journal of Marine Science and Engineering https://hal.univ-brest.fr/hal-04159144 Journal of Marine Science and Engineering, 2022, 10, ⟨10.3390/jmse10081106⟩ Cameron Louise P. Reymond Claire E. Bijma Jelle Büscher Janina V. De Beer Dirk Guillermic Maxence Eagle Robert A. Gunnell John Müller-Lundin Fiona Schmidt-Grieb Gertraud M. Westfield Isaac Westphal Hildegard Ries Justin B. Citation Cameron L. P Reymond C. E Bijma J Büscher J. V De Beer D Guillermic M Eagle R. A Gunnell Müller-Lundin F Schmidt-Grieb G. M Westfield I Westphal H & Ries Louise P Claire E Jelle Janina V Dirk Maxence Robert A John Fiona Gertraud M Isaac Hildegard Ries info:eu-repo/semantics/article Journal articles 2022 ftccsdartic https://doi.org/10.3390/jmse10081106 2023-07-15T22:32:39Z International audience Corals are globally important calcifiers that exhibit complex responses to anthropogenic warming and acidification. Although coral calcification is supported by high seawater pH, photosynthesis by the algal symbionts of zooxanthellate corals can be promoted by elevated pCO2. To investigate the mechanisms underlying corals’ complex responses to global change, three species of tropical zooxanthellate corals (Stylophora pistillata, Pocillopora damicornis, and Seriatopora hystrix) and one species of asymbiotic cold-water coral (Desmophyllum pertusum, syn. Lophelia pertusa) were cultured under a range of ocean acidification and warming scenarios. Under control temperatures, all tropical species exhibited increased calcification rates in response to increasing pCO2. However, the tropical species’ response to increasing pCO2 flattened when they lost symbionts (i.e., bleached) under the high-temperature treatments—suggesting that the loss of symbionts neutralized the benefit of increased pCO2 on calcification rate. Notably, the cold-water species that lacks symbionts exhibited a negative calcification response to increasing pCO2, although this negative response was partially ameliorated under elevated temperature. All four species elevated their calcifying fluid pH relative to seawater pH under all pCO2 treatments, and the magnitude of this offset (Δ[H+]) increased with increasing pCO2. Furthermore, calcifying fluid pH decreased along with symbiont abundance under thermal stress for the one species in which calcifying fluid pH was measured under both temperature treatments. This observation suggests a mechanistic link between photosymbiont loss (‘bleaching’) and impairment of zooxanthellate corals’ ability to elevate calcifying fluid pH in support of calcification under heat stress. This study supports the assertion that thermally induced loss of photosymbionts impairs tropical zooxanthellate corals’ ability to cope with CO2-induced ocean acidification. © 2022 by the authors. Article in Journal/Newspaper Lophelia pertusa Ocean acidification Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Hildegard ENVELOPE(-57.917,-57.917,-63.317,-63.317) Journal of Marine Science and Engineering 10 8 1106 |