Calcification of the cold-water coral Lophelia pertusa, under ambient and reduced pH
International audience Abstract. The cold-water coral Lophelia pertusa is one of the few species able to build reef-like structures and a 3-dimensional coral framework in the deep oceans. Furthermore, deep cold-water coral bioherms may be among the first marine ecosystems to be affected by ocean aci...
Published in: | Biogeosciences |
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-03325661 https://hal-insu.archives-ouvertes.fr/insu-03325661/document https://hal-insu.archives-ouvertes.fr/insu-03325661/file/bg-6-1671-2009.pdf https://doi.org/10.5194/bg-6-1671-2009 |
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ftunivnantes:oai:HAL:insu-03325661v1 2023-05-15T17:08:38+02:00 Calcification of the cold-water coral Lophelia pertusa, under ambient and reduced pH Maier, C. Hegeman, J. Weinbauer, Markus, Gattuso, J.-P. Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) The publication of this article is financed by CNRS-INSU. 2009 https://hal-insu.archives-ouvertes.fr/insu-03325661 https://hal-insu.archives-ouvertes.fr/insu-03325661/document https://hal-insu.archives-ouvertes.fr/insu-03325661/file/bg-6-1671-2009.pdf https://doi.org/10.5194/bg-6-1671-2009 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-6-1671-2009 insu-03325661 https://hal-insu.archives-ouvertes.fr/insu-03325661 https://hal-insu.archives-ouvertes.fr/insu-03325661/document https://hal-insu.archives-ouvertes.fr/insu-03325661/file/bg-6-1671-2009.pdf doi:10.5194/bg-6-1671-2009 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal-insu.archives-ouvertes.fr/insu-03325661 Biogeosciences, 2009, 6 (8), pp.1671-1680. ⟨10.5194/bg-6-1671-2009⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2009 ftunivnantes https://doi.org/10.5194/bg-6-1671-2009 2023-02-08T04:13:05Z International audience Abstract. The cold-water coral Lophelia pertusa is one of the few species able to build reef-like structures and a 3-dimensional coral framework in the deep oceans. Furthermore, deep cold-water coral bioherms may be among the first marine ecosystems to be affected by ocean acidification. Colonies of L. pertusa were collected during a cruise in 2006 to cold-water coral bioherms of the Mingulay reef complex (Hebrides, North Atlantic). Shortly after sample collection onboard these corals were labelled with calcium-45. The same experimental approach was used to assess calcification rates and how those changed due to reduced pH during a cruise to the Skagerrak (North Sea) in 2007. The highest calcification rates were found in youngest polyps with up to 1% d−1 new skeletal growth and average rates of 0.11±0.02% d−1±S.E.). Lowering pH by 0.15 and 0.3 units relative to the ambient level resulted in calcification being reduced by 30 and 56%. Lower pH reduced calcification more in fast growing, young polyps (59% reduction) than in older polyps (40% reduction). Thus skeletal growth of young and fast calcifying corallites suffered more from ocean acidification. Nevertheless, L. pertusa exhibited positive net calcification (as measured by 45Ca incorporation) even at an aragonite saturation state (Ωa) below 1. Article in Journal/Newspaper Lophelia pertusa North Atlantic Ocean acidification Université de Nantes: HAL-UNIV-NANTES Biogeosciences 6 8 1671 1680 |
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Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Maier, C. Hegeman, J. Weinbauer, Markus, Gattuso, J.-P. Calcification of the cold-water coral Lophelia pertusa, under ambient and reduced pH |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience Abstract. The cold-water coral Lophelia pertusa is one of the few species able to build reef-like structures and a 3-dimensional coral framework in the deep oceans. Furthermore, deep cold-water coral bioherms may be among the first marine ecosystems to be affected by ocean acidification. Colonies of L. pertusa were collected during a cruise in 2006 to cold-water coral bioherms of the Mingulay reef complex (Hebrides, North Atlantic). Shortly after sample collection onboard these corals were labelled with calcium-45. The same experimental approach was used to assess calcification rates and how those changed due to reduced pH during a cruise to the Skagerrak (North Sea) in 2007. The highest calcification rates were found in youngest polyps with up to 1% d−1 new skeletal growth and average rates of 0.11±0.02% d−1±S.E.). Lowering pH by 0.15 and 0.3 units relative to the ambient level resulted in calcification being reduced by 30 and 56%. Lower pH reduced calcification more in fast growing, young polyps (59% reduction) than in older polyps (40% reduction). Thus skeletal growth of young and fast calcifying corallites suffered more from ocean acidification. Nevertheless, L. pertusa exhibited positive net calcification (as measured by 45Ca incorporation) even at an aragonite saturation state (Ωa) below 1. |
author2 |
Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) The publication of this article is financed by CNRS-INSU. |
format |
Article in Journal/Newspaper |
author |
Maier, C. Hegeman, J. Weinbauer, Markus, Gattuso, J.-P. |
author_facet |
Maier, C. Hegeman, J. Weinbauer, Markus, Gattuso, J.-P. |
author_sort |
Maier, C. |
title |
Calcification of the cold-water coral Lophelia pertusa, under ambient and reduced pH |
title_short |
Calcification of the cold-water coral Lophelia pertusa, under ambient and reduced pH |
title_full |
Calcification of the cold-water coral Lophelia pertusa, under ambient and reduced pH |
title_fullStr |
Calcification of the cold-water coral Lophelia pertusa, under ambient and reduced pH |
title_full_unstemmed |
Calcification of the cold-water coral Lophelia pertusa, under ambient and reduced pH |
title_sort |
calcification of the cold-water coral lophelia pertusa, under ambient and reduced ph |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03325661 https://hal-insu.archives-ouvertes.fr/insu-03325661/document https://hal-insu.archives-ouvertes.fr/insu-03325661/file/bg-6-1671-2009.pdf https://doi.org/10.5194/bg-6-1671-2009 |
genre |
Lophelia pertusa North Atlantic Ocean acidification |
genre_facet |
Lophelia pertusa North Atlantic Ocean acidification |
op_source |
ISSN: 1726-4170 EISSN: 1726-4189 Biogeosciences https://hal-insu.archives-ouvertes.fr/insu-03325661 Biogeosciences, 2009, 6 (8), pp.1671-1680. ⟨10.5194/bg-6-1671-2009⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/bg-6-1671-2009 insu-03325661 https://hal-insu.archives-ouvertes.fr/insu-03325661 https://hal-insu.archives-ouvertes.fr/insu-03325661/document https://hal-insu.archives-ouvertes.fr/insu-03325661/file/bg-6-1671-2009.pdf doi:10.5194/bg-6-1671-2009 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/bg-6-1671-2009 |
container_title |
Biogeosciences |
container_volume |
6 |
container_issue |
8 |
container_start_page |
1671 |
op_container_end_page |
1680 |
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1766064444565094400 |