Cascading Effects of Ocean Acidification in a Rocky Subtidal Community
International audience Temperate marine rocky habitats may be alternatively characterized by well vegetated macroalgal assemblages or barren grounds, as a consequence of direct and indirect human impacts (e.g. overfishing) and grazing pressure by herbivorous organisms. In future scenarios of ocean a...
Published in: | PLoS ONE |
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Main Authors: | , , , , , , |
Other Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2013
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Online Access: | https://hal.sorbonne-universite.fr/hal-01535594 https://hal.sorbonne-universite.fr/hal-01535594/document https://hal.sorbonne-universite.fr/hal-01535594/file/journal.pone.0061978.PDF https://doi.org/10.1371/journal.pone.0061978 |
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openpolar |
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HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
[SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDE.BE]Environmental Sciences/Biodiversity and Ecology Asnaghi, Valentina Chiantore, Mariachiara Mangialajo, Luisa Gazeau, Frédéric Francour, Patrice Alliouane, Samir Gattuso, Jean-Pierre Cascading Effects of Ocean Acidification in a Rocky Subtidal Community |
topic_facet |
[SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Temperate marine rocky habitats may be alternatively characterized by well vegetated macroalgal assemblages or barren grounds, as a consequence of direct and indirect human impacts (e.g. overfishing) and grazing pressure by herbivorous organisms. In future scenarios of ocean acidification, calcifying organisms are expected to be less competitive: among these two key elements of the rocky subtidal food web, coralline algae and sea urchins. In order to highlight how the effects of increased pCO 2 on individual calcifying species will be exacerbated by interactions with other trophic levels, we performed an experiment simultaneously testing ocean acidification effects on primary producers (calcifying and non-calcifying algae) and their grazers (sea urchins). Artificial communities, composed by juveniles of the sea urchin Paracentrotus lividus and calcifying (Corallina elongata) and non-calcifying (Cystoseira amentacea var stricta, Dictyota dichotoma) macroalgae, were subjected to pCO 2 levels of 390, 550, 750 and 1000 matm in the laboratory. Our study highlighted a direct pCO 2 effect on coralline algae and on sea urchin defense from predation (test robustness). There was no direct effect on the non-calcifying macroalgae. More interestingly, we highlighted diet-mediated effects on test robustness and on the Aristotle's lantern size. In a future scenario of ocean acidification a decrease of sea urchins' density is expected, due to lower defense from predation, as a direct consequence of pH decrease, and to a reduced availability of calcifying macroalgae, important component of urchins' diet. The effects of ocean acidification may therefore be contrasting on well vegetated macroalgal assemblages and barren grounds: in the absence of other human impacts, a decrease of biodiversity can be predicted in vegetated macroalgal assemblages, whereas a lower density of sea urchin could help the recovery of shallow subtidal rocky areas affected by overfishing from barren grounds to assemblages dominated ... |
author2 |
Department of Earth, Environmental and Life Sciences (DISTAV) Università degli studi di Genova = University of Genoa (UniGe) Ecosystèmes Côtiers Marins et Réponses aux Stress (ECOMERS) Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UniCA) Laboratoire d'océanographie de Villefranche (LOV) 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)-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) |
format |
Article in Journal/Newspaper |
author |
Asnaghi, Valentina Chiantore, Mariachiara Mangialajo, Luisa Gazeau, Frédéric Francour, Patrice Alliouane, Samir Gattuso, Jean-Pierre |
author_facet |
Asnaghi, Valentina Chiantore, Mariachiara Mangialajo, Luisa Gazeau, Frédéric Francour, Patrice Alliouane, Samir Gattuso, Jean-Pierre |
author_sort |
Asnaghi, Valentina |
title |
Cascading Effects of Ocean Acidification in a Rocky Subtidal Community |
title_short |
Cascading Effects of Ocean Acidification in a Rocky Subtidal Community |
title_full |
Cascading Effects of Ocean Acidification in a Rocky Subtidal Community |
title_fullStr |
Cascading Effects of Ocean Acidification in a Rocky Subtidal Community |
title_full_unstemmed |
Cascading Effects of Ocean Acidification in a Rocky Subtidal Community |
title_sort |
cascading effects of ocean acidification in a rocky subtidal community |
publisher |
HAL CCSD |
publishDate |
2013 |
url |
https://hal.sorbonne-universite.fr/hal-01535594 https://hal.sorbonne-universite.fr/hal-01535594/document https://hal.sorbonne-universite.fr/hal-01535594/file/journal.pone.0061978.PDF https://doi.org/10.1371/journal.pone.0061978 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.sorbonne-universite.fr/hal-01535594 PLoS ONE, 2013, 8 (4), pp.e61978. ⟨10.1371/journal.pone.0061978⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0061978 hal-01535594 https://hal.sorbonne-universite.fr/hal-01535594 https://hal.sorbonne-universite.fr/hal-01535594/document https://hal.sorbonne-universite.fr/hal-01535594/file/journal.pone.0061978.PDF doi:10.1371/journal.pone.0061978 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1371/journal.pone.0061978 |
container_title |
PLoS ONE |
container_volume |
8 |
container_issue |
4 |
container_start_page |
e61978 |
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1796316811450384384 |
spelling |
ftsorbonneuniv:oai:HAL:hal-01535594v1 2024-04-14T08:17:35+00:00 Cascading Effects of Ocean Acidification in a Rocky Subtidal Community Asnaghi, Valentina Chiantore, Mariachiara Mangialajo, Luisa Gazeau, Frédéric Francour, Patrice Alliouane, Samir Gattuso, Jean-Pierre Department of Earth, Environmental and Life Sciences (DISTAV) Università degli studi di Genova = University of Genoa (UniGe) Ecosystèmes Côtiers Marins et Réponses aux Stress (ECOMERS) Université Nice Sophia Antipolis (1965 - 2019) (UNS)-Centre National de la Recherche Scientifique (CNRS)-Université Côte d'Azur (UniCA) Laboratoire d'océanographie de Villefranche (LOV) 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)-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) 2013 https://hal.sorbonne-universite.fr/hal-01535594 https://hal.sorbonne-universite.fr/hal-01535594/document https://hal.sorbonne-universite.fr/hal-01535594/file/journal.pone.0061978.PDF https://doi.org/10.1371/journal.pone.0061978 en eng HAL CCSD Public Library of Science info:eu-repo/semantics/altIdentifier/doi/10.1371/journal.pone.0061978 hal-01535594 https://hal.sorbonne-universite.fr/hal-01535594 https://hal.sorbonne-universite.fr/hal-01535594/document https://hal.sorbonne-universite.fr/hal-01535594/file/journal.pone.0061978.PDF doi:10.1371/journal.pone.0061978 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1932-6203 EISSN: 1932-6203 PLoS ONE https://hal.sorbonne-universite.fr/hal-01535594 PLoS ONE, 2013, 8 (4), pp.e61978. ⟨10.1371/journal.pone.0061978⟩ [SDV.EE.BIO]Life Sciences [q-bio]/Ecology environment/Bioclimatology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2013 ftsorbonneuniv https://doi.org/10.1371/journal.pone.0061978 2024-03-15T04:05:26Z International audience Temperate marine rocky habitats may be alternatively characterized by well vegetated macroalgal assemblages or barren grounds, as a consequence of direct and indirect human impacts (e.g. overfishing) and grazing pressure by herbivorous organisms. In future scenarios of ocean acidification, calcifying organisms are expected to be less competitive: among these two key elements of the rocky subtidal food web, coralline algae and sea urchins. In order to highlight how the effects of increased pCO 2 on individual calcifying species will be exacerbated by interactions with other trophic levels, we performed an experiment simultaneously testing ocean acidification effects on primary producers (calcifying and non-calcifying algae) and their grazers (sea urchins). Artificial communities, composed by juveniles of the sea urchin Paracentrotus lividus and calcifying (Corallina elongata) and non-calcifying (Cystoseira amentacea var stricta, Dictyota dichotoma) macroalgae, were subjected to pCO 2 levels of 390, 550, 750 and 1000 matm in the laboratory. Our study highlighted a direct pCO 2 effect on coralline algae and on sea urchin defense from predation (test robustness). There was no direct effect on the non-calcifying macroalgae. More interestingly, we highlighted diet-mediated effects on test robustness and on the Aristotle's lantern size. In a future scenario of ocean acidification a decrease of sea urchins' density is expected, due to lower defense from predation, as a direct consequence of pH decrease, and to a reduced availability of calcifying macroalgae, important component of urchins' diet. The effects of ocean acidification may therefore be contrasting on well vegetated macroalgal assemblages and barren grounds: in the absence of other human impacts, a decrease of biodiversity can be predicted in vegetated macroalgal assemblages, whereas a lower density of sea urchin could help the recovery of shallow subtidal rocky areas affected by overfishing from barren grounds to assemblages dominated ... Article in Journal/Newspaper Ocean acidification HAL Sorbonne Université PLoS ONE 8 4 e61978 |