Effects of elevated p CO 2 and feeding on net calcification and energy budget of the Mediterranean cold-water coral Madrepora oculata
International audience Ocean acidification is a major threat to calcifying marine organisms such as deep-sea cold-water corals (CWCs), but related knowledge is scarce. The aragonite saturation threshold (Ω a) for calcification, respiration and organic matter fluxes were investigated experimentally i...
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ftinsu:oai:HAL:hal-01404819v1 2024-02-11T10:07:26+01:00 Effects of elevated p CO 2 and feeding on net calcification and energy budget of the Mediterranean cold-water coral Madrepora oculata Maier, Cornelia Popp, Pauline Sollfrank, Nicole Weinbauer, Markus, G Wild, Christian Gattuso, Jean-Pierre Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'océanographie de Villefranche (LOV) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) University of Bremen Institute for sustainable development and international relations Sciences Po (Sciences Po) 2016 https://hal.sorbonne-universite.fr/hal-01404819 https://hal.sorbonne-universite.fr/hal-01404819/document https://hal.sorbonne-universite.fr/hal-01404819/file/Maier_2016_Effects_of_elevated.pdf https://doi.org/10.1242/jeb.127159 en eng HAL CCSD The Company of Biologists info:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.127159 hal-01404819 https://hal.sorbonne-universite.fr/hal-01404819 https://hal.sorbonne-universite.fr/hal-01404819/document https://hal.sorbonne-universite.fr/hal-01404819/file/Maier_2016_Effects_of_elevated.pdf doi:10.1242/jeb.127159 info:eu-repo/semantics/OpenAccess ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology https://hal.sorbonne-universite.fr/hal-01404819 Journal of Experimental Biology, 2016, 219 (20), pp.3208-3217. ⟨10.1242/jeb.127159⟩ Metabolic energy Scleractinia Mediterranean Sea Deep sea Ocean acidification [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology info:eu-repo/semantics/article Journal articles 2016 ftinsu https://doi.org/10.1242/jeb.127159 2024-01-24T17:38:46Z International audience Ocean acidification is a major threat to calcifying marine organisms such as deep-sea cold-water corals (CWCs), but related knowledge is scarce. The aragonite saturation threshold (Ω a) for calcification, respiration and organic matter fluxes were investigated experimentally in the Mediterranean Madrepora oculata. Over 10 weeks, colonies were maintained under two feeding regimes (uptake of 36.75 and 7.46 µmol C polyp −1 week −1) and exposed in 2 week intervals to a consecutively changing air–CO 2 mix (pCO 2) of 400, 1600, 800, 2000 and 400 ppm. There was a significant effect of feeding on calcification at initial ambient pCO 2 , while with consecutive pCO 2 treatments, feeding had no effect on calcification. Respiration was not significantly affected by feeding or pCO 2 levels. Coral skeletons started to dissolve at an average Ω a threshold of 0.92, but recovered and started to calcify again at Ω a ≥1. The surplus energy required to counteract dissolution at elevated pCO 2 (≥1600 µatm) was twice that at ambient pCO 2. Yet, feeding had no mitigating effect at increasing pCO 2 levels. This could be due to the fact that the energy required for calcification is a small fraction (1–3%) of the total metabolic energy demand and corals even under low food conditions might therefore still be able to allocate this small portion of energy to calcification. The response and resistance to ocean acidification are consequently not controlled by feeding in this species, but more likely by chemical reactions at the site of calcification and exchange processes between the calicoblastic layer and ambient seawater. Article in Journal/Newspaper Ocean acidification Institut national des sciences de l'Univers: HAL-INSU Journal of Experimental Biology |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
Metabolic energy Scleractinia Mediterranean Sea Deep sea Ocean acidification [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology |
spellingShingle |
Metabolic energy Scleractinia Mediterranean Sea Deep sea Ocean acidification [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology Maier, Cornelia Popp, Pauline Sollfrank, Nicole Weinbauer, Markus, G Wild, Christian Gattuso, Jean-Pierre Effects of elevated p CO 2 and feeding on net calcification and energy budget of the Mediterranean cold-water coral Madrepora oculata |
topic_facet |
Metabolic energy Scleractinia Mediterranean Sea Deep sea Ocean acidification [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDV.BA.ZI]Life Sciences [q-bio]/Animal biology/Invertebrate Zoology |
description |
International audience Ocean acidification is a major threat to calcifying marine organisms such as deep-sea cold-water corals (CWCs), but related knowledge is scarce. The aragonite saturation threshold (Ω a) for calcification, respiration and organic matter fluxes were investigated experimentally in the Mediterranean Madrepora oculata. Over 10 weeks, colonies were maintained under two feeding regimes (uptake of 36.75 and 7.46 µmol C polyp −1 week −1) and exposed in 2 week intervals to a consecutively changing air–CO 2 mix (pCO 2) of 400, 1600, 800, 2000 and 400 ppm. There was a significant effect of feeding on calcification at initial ambient pCO 2 , while with consecutive pCO 2 treatments, feeding had no effect on calcification. Respiration was not significantly affected by feeding or pCO 2 levels. Coral skeletons started to dissolve at an average Ω a threshold of 0.92, but recovered and started to calcify again at Ω a ≥1. The surplus energy required to counteract dissolution at elevated pCO 2 (≥1600 µatm) was twice that at ambient pCO 2. Yet, feeding had no mitigating effect at increasing pCO 2 levels. This could be due to the fact that the energy required for calcification is a small fraction (1–3%) of the total metabolic energy demand and corals even under low food conditions might therefore still be able to allocate this small portion of energy to calcification. The response and resistance to ocean acidification are consequently not controlled by feeding in this species, but more likely by chemical reactions at the site of calcification and exchange processes between the calicoblastic layer and ambient seawater. |
author2 |
Observatoire océanologique de Villefranche-sur-mer (OOVM) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS) Laboratoire d'océanographie de Villefranche (LOV) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) University of Bremen Institute for sustainable development and international relations Sciences Po (Sciences Po) |
format |
Article in Journal/Newspaper |
author |
Maier, Cornelia Popp, Pauline Sollfrank, Nicole Weinbauer, Markus, G Wild, Christian Gattuso, Jean-Pierre |
author_facet |
Maier, Cornelia Popp, Pauline Sollfrank, Nicole Weinbauer, Markus, G Wild, Christian Gattuso, Jean-Pierre |
author_sort |
Maier, Cornelia |
title |
Effects of elevated p CO 2 and feeding on net calcification and energy budget of the Mediterranean cold-water coral Madrepora oculata |
title_short |
Effects of elevated p CO 2 and feeding on net calcification and energy budget of the Mediterranean cold-water coral Madrepora oculata |
title_full |
Effects of elevated p CO 2 and feeding on net calcification and energy budget of the Mediterranean cold-water coral Madrepora oculata |
title_fullStr |
Effects of elevated p CO 2 and feeding on net calcification and energy budget of the Mediterranean cold-water coral Madrepora oculata |
title_full_unstemmed |
Effects of elevated p CO 2 and feeding on net calcification and energy budget of the Mediterranean cold-water coral Madrepora oculata |
title_sort |
effects of elevated p co 2 and feeding on net calcification and energy budget of the mediterranean cold-water coral madrepora oculata |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://hal.sorbonne-universite.fr/hal-01404819 https://hal.sorbonne-universite.fr/hal-01404819/document https://hal.sorbonne-universite.fr/hal-01404819/file/Maier_2016_Effects_of_elevated.pdf https://doi.org/10.1242/jeb.127159 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
ISSN: 0022-0949 EISSN: 1477-9145 Journal of Experimental Biology https://hal.sorbonne-universite.fr/hal-01404819 Journal of Experimental Biology, 2016, 219 (20), pp.3208-3217. ⟨10.1242/jeb.127159⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1242/jeb.127159 hal-01404819 https://hal.sorbonne-universite.fr/hal-01404819 https://hal.sorbonne-universite.fr/hal-01404819/document https://hal.sorbonne-universite.fr/hal-01404819/file/Maier_2016_Effects_of_elevated.pdf doi:10.1242/jeb.127159 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1242/jeb.127159 |
container_title |
Journal of Experimental Biology |
_version_ |
1790605998816231424 |