Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities
Ocean acidification (OA) is a severe threat to coral reefs mainly by reducing their calcification rate. Identifying the resilience factors of corals to decreasing seawater pH is of paramount importance to predict the survivability of coral reefs in the future. This study compared corals adapted to v...
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Wiley Open Access
2023
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Online Access: | https://archimer.ifremer.fr/doc/00840/95149/102846.pdf https://archimer.ifremer.fr/doc/00840/95149/102847.docx https://doi.org/10.1002/ece3.10099 https://archimer.ifremer.fr/doc/00840/95149/ |
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ftarchimer:oai:archimer.ifremer.fr:95149 2023-07-16T04:00:18+02:00 Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities Tanvet, Clement Camp, Emma F. Sutton, Jill Houlbrèque, Fanny Thouzeau, Gerard Rodolfo-metalpa, Roccardo 2023-05 application/pdf https://archimer.ifremer.fr/doc/00840/95149/102846.pdf https://archimer.ifremer.fr/doc/00840/95149/102847.docx https://doi.org/10.1002/ece3.10099 https://archimer.ifremer.fr/doc/00840/95149/ eng eng Wiley Open Access https://archimer.ifremer.fr/doc/00840/95149/102846.pdf https://archimer.ifremer.fr/doc/00840/95149/102847.docx doi:10.1002/ece3.10099 https://archimer.ifremer.fr/doc/00840/95149/ info:eu-repo/semantics/openAccess restricted use Ecology And Evolution (2045-7758) (Wiley Open Access), 2023-05 , Vol. 13 , N. 5 , P. 10099 (21p.) adaptation Bourake calcification coral natural analogue New Caledonia ocean acidification physiology Symbiodiniaceae text Article info:eu-repo/semantics/article 2023 ftarchimer https://doi.org/10.1002/ece3.10099 2023-06-27T22:51:11Z Ocean acidification (OA) is a severe threat to coral reefs mainly by reducing their calcification rate. Identifying the resilience factors of corals to decreasing seawater pH is of paramount importance to predict the survivability of coral reefs in the future. This study compared corals adapted to variable pHT (i.e., 7.23–8.06) from the semi-enclosed lagoon of Bouraké, New Caledonia, to corals adapted to more stable seawater pHT (i.e., 7.90–8.18). In a 100-day aquarium experiment, we examined the physiological response and genetic diversity of Symbiodiniaceae from three coral species (Acropora tenuis, Montipora digitata, and Porites sp.) from both sites under three stable pHNBS conditions (8.11, 7.76, 7.54) and one fluctuating pHNBS regime (between 7.56 and 8.07). Bouraké corals consistently exhibited higher growth rates than corals from the stable pH environment. Interestingly, A. tenuis from Bouraké showed the highest growth rate under the 7.76 pHNBS condition, whereas for M. digitata, and Porites sp. from Bouraké, growth was highest under the fluctuating regime and the 8.11 pHNBS conditions, respectively. While OA generally decreased coral calcification by ca. 16%, Bouraké corals showed higher growth rates than corals from the stable pH environment (21% increase for A. tenuis to 93% for M. digitata, with all pH conditions pooled). This superior performance coincided with divergent symbiont communities that were more homogenous for Bouraké corals. Corals adapted to variable pH conditions appear to have a better capacity to calcify under reduced pH compared to corals native to more stable pH condition. This response was not gained by corals from the more stable environment exposed to variable pH during the 100-day experiment, suggesting that long-term exposure to pH fluctuations and/or differences in symbiont communities benefit calcification under OA. Article in Journal/Newspaper Ocean acidification Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Ecology and Evolution 13 5 |
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Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
adaptation Bourake calcification coral natural analogue New Caledonia ocean acidification physiology Symbiodiniaceae |
spellingShingle |
adaptation Bourake calcification coral natural analogue New Caledonia ocean acidification physiology Symbiodiniaceae Tanvet, Clement Camp, Emma F. Sutton, Jill Houlbrèque, Fanny Thouzeau, Gerard Rodolfo-metalpa, Roccardo Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities |
topic_facet |
adaptation Bourake calcification coral natural analogue New Caledonia ocean acidification physiology Symbiodiniaceae |
description |
Ocean acidification (OA) is a severe threat to coral reefs mainly by reducing their calcification rate. Identifying the resilience factors of corals to decreasing seawater pH is of paramount importance to predict the survivability of coral reefs in the future. This study compared corals adapted to variable pHT (i.e., 7.23–8.06) from the semi-enclosed lagoon of Bouraké, New Caledonia, to corals adapted to more stable seawater pHT (i.e., 7.90–8.18). In a 100-day aquarium experiment, we examined the physiological response and genetic diversity of Symbiodiniaceae from three coral species (Acropora tenuis, Montipora digitata, and Porites sp.) from both sites under three stable pHNBS conditions (8.11, 7.76, 7.54) and one fluctuating pHNBS regime (between 7.56 and 8.07). Bouraké corals consistently exhibited higher growth rates than corals from the stable pH environment. Interestingly, A. tenuis from Bouraké showed the highest growth rate under the 7.76 pHNBS condition, whereas for M. digitata, and Porites sp. from Bouraké, growth was highest under the fluctuating regime and the 8.11 pHNBS conditions, respectively. While OA generally decreased coral calcification by ca. 16%, Bouraké corals showed higher growth rates than corals from the stable pH environment (21% increase for A. tenuis to 93% for M. digitata, with all pH conditions pooled). This superior performance coincided with divergent symbiont communities that were more homogenous for Bouraké corals. Corals adapted to variable pH conditions appear to have a better capacity to calcify under reduced pH compared to corals native to more stable pH condition. This response was not gained by corals from the more stable environment exposed to variable pH during the 100-day experiment, suggesting that long-term exposure to pH fluctuations and/or differences in symbiont communities benefit calcification under OA. |
format |
Article in Journal/Newspaper |
author |
Tanvet, Clement Camp, Emma F. Sutton, Jill Houlbrèque, Fanny Thouzeau, Gerard Rodolfo-metalpa, Roccardo |
author_facet |
Tanvet, Clement Camp, Emma F. Sutton, Jill Houlbrèque, Fanny Thouzeau, Gerard Rodolfo-metalpa, Roccardo |
author_sort |
Tanvet, Clement |
title |
Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities |
title_short |
Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities |
title_full |
Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities |
title_fullStr |
Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities |
title_full_unstemmed |
Corals adapted to extreme and fluctuating seawater pH increase calcification rates and have unique symbiont communities |
title_sort |
corals adapted to extreme and fluctuating seawater ph increase calcification rates and have unique symbiont communities |
publisher |
Wiley Open Access |
publishDate |
2023 |
url |
https://archimer.ifremer.fr/doc/00840/95149/102846.pdf https://archimer.ifremer.fr/doc/00840/95149/102847.docx https://doi.org/10.1002/ece3.10099 https://archimer.ifremer.fr/doc/00840/95149/ |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
Ecology And Evolution (2045-7758) (Wiley Open Access), 2023-05 , Vol. 13 , N. 5 , P. 10099 (21p.) |
op_relation |
https://archimer.ifremer.fr/doc/00840/95149/102846.pdf https://archimer.ifremer.fr/doc/00840/95149/102847.docx doi:10.1002/ece3.10099 https://archimer.ifremer.fr/doc/00840/95149/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
op_doi |
https://doi.org/10.1002/ece3.10099 |
container_title |
Ecology and Evolution |
container_volume |
13 |
container_issue |
5 |
_version_ |
1771548924980494336 |