Effect of ocean warming and acidification on a plankton community in the NW Mediterranean Sea
International audience Abstract The effect of ocean warming and acidification was investigated on a natural plankton assemblage from an oligotrophic area, the bay of Villefranche (NW Mediterranean Sea). The assemblage was sampled in March 2012 and exposed to the following four treatments for 12 days...
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ftsorbonneuniv:oai:HAL:hal-03334805v1 2024-09-15T18:28:20+00:00 Effect of ocean warming and acidification on a plankton community in the NW Mediterranean Sea Maugendre, L. Gattuso, Jean-Pierre Louis, J. de Kluijver, A. Marro, S. Soetaert, K. Gazeau, Frédéric 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) Deltares The Netherlands Royal Netherlands Institute for Sea Research (NIOZ) 2015-07-01 https://hal.science/hal-03334805 https://doi.org/10.1093/icesjms/fsu161 en eng HAL CCSD Oxford University Press info:eu-repo/semantics/altIdentifier/doi/10.1093/icesjms/fsu161 hal-03334805 https://hal.science/hal-03334805 doi:10.1093/icesjms/fsu161 ISSN: 1054-3139 EISSN: 1095-9289 ICES Journal of Marine Science https://hal.science/hal-03334805 ICES Journal of Marine Science, 2015, 72 (6), pp.1744-1755. ⟨10.1093/icesjms/fsu161⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2015 ftsorbonneuniv https://doi.org/10.1093/icesjms/fsu161 2024-07-25T23:47:53Z International audience Abstract The effect of ocean warming and acidification was investigated on a natural plankton assemblage from an oligotrophic area, the bay of Villefranche (NW Mediterranean Sea). The assemblage was sampled in March 2012 and exposed to the following four treatments for 12 days: control (∼360 μatm, 14°C), elevated pCO2 (∼610 μatm, 14°C), elevated temperature (∼410 μatm, 17°C), and elevated pCO2 and temperature (∼690 μatm, 17°C). Nutrients were already depleted at the beginning of the experiment and the concentrations of chlorophyll a (chl a), heterotrophic prokaryotes and viruses decreased, under all treatments, throughout the experiment. There were no statistically significant effects of ocean warming and acidification, whether in isolation or combined, on the concentrations of nutrients, particulate organic matter, chl a and most of the photosynthetic pigments. Furthermore, 13C labelling showed that the carbon transfer rates from 13C-sodium bicarbonate into particulate organic carbon were not affected by seawater warming nor acidification. Rates of gross primary production followed the general decreasing trend of chl a concentrations and were significantly higher under elevated temperature, an effect exacerbated when combined to elevated pCO2 level. In contrast to the other algal groups, the picophytoplankton population (cyanobacteria, mostly Synechococcus) increased throughout the experiment and was more abundant in the warmer treatment though to a lesser extent when combined to high pCO2 level. These results suggest that under nutrient-depleted conditions in the Mediterranean Sea, ocean acidification has a very limited impact on the plankton community and that small species will benefit from warming with a potential decrease of the export and energy transfer to higher trophic levels. Article in Journal/Newspaper Ocean acidification HAL Sorbonne Université ICES Journal of Marine Science 72 6 1744 1755 |
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Open Polar |
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HAL Sorbonne Université |
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ftsorbonneuniv |
language |
English |
topic |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Maugendre, L. Gattuso, Jean-Pierre Louis, J. de Kluijver, A. Marro, S. Soetaert, K. Gazeau, Frédéric Effect of ocean warming and acidification on a plankton community in the NW Mediterranean Sea |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience Abstract The effect of ocean warming and acidification was investigated on a natural plankton assemblage from an oligotrophic area, the bay of Villefranche (NW Mediterranean Sea). The assemblage was sampled in March 2012 and exposed to the following four treatments for 12 days: control (∼360 μatm, 14°C), elevated pCO2 (∼610 μatm, 14°C), elevated temperature (∼410 μatm, 17°C), and elevated pCO2 and temperature (∼690 μatm, 17°C). Nutrients were already depleted at the beginning of the experiment and the concentrations of chlorophyll a (chl a), heterotrophic prokaryotes and viruses decreased, under all treatments, throughout the experiment. There were no statistically significant effects of ocean warming and acidification, whether in isolation or combined, on the concentrations of nutrients, particulate organic matter, chl a and most of the photosynthetic pigments. Furthermore, 13C labelling showed that the carbon transfer rates from 13C-sodium bicarbonate into particulate organic carbon were not affected by seawater warming nor acidification. Rates of gross primary production followed the general decreasing trend of chl a concentrations and were significantly higher under elevated temperature, an effect exacerbated when combined to elevated pCO2 level. In contrast to the other algal groups, the picophytoplankton population (cyanobacteria, mostly Synechococcus) increased throughout the experiment and was more abundant in the warmer treatment though to a lesser extent when combined to high pCO2 level. These results suggest that under nutrient-depleted conditions in the Mediterranean Sea, ocean acidification has a very limited impact on the plankton community and that small species will benefit from warming with a potential decrease of the export and energy transfer to higher trophic levels. |
author2 |
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) Deltares The Netherlands Royal Netherlands Institute for Sea Research (NIOZ) |
format |
Article in Journal/Newspaper |
author |
Maugendre, L. Gattuso, Jean-Pierre Louis, J. de Kluijver, A. Marro, S. Soetaert, K. Gazeau, Frédéric |
author_facet |
Maugendre, L. Gattuso, Jean-Pierre Louis, J. de Kluijver, A. Marro, S. Soetaert, K. Gazeau, Frédéric |
author_sort |
Maugendre, L. |
title |
Effect of ocean warming and acidification on a plankton community in the NW Mediterranean Sea |
title_short |
Effect of ocean warming and acidification on a plankton community in the NW Mediterranean Sea |
title_full |
Effect of ocean warming and acidification on a plankton community in the NW Mediterranean Sea |
title_fullStr |
Effect of ocean warming and acidification on a plankton community in the NW Mediterranean Sea |
title_full_unstemmed |
Effect of ocean warming and acidification on a plankton community in the NW Mediterranean Sea |
title_sort |
effect of ocean warming and acidification on a plankton community in the nw mediterranean sea |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.science/hal-03334805 https://doi.org/10.1093/icesjms/fsu161 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
ISSN: 1054-3139 EISSN: 1095-9289 ICES Journal of Marine Science https://hal.science/hal-03334805 ICES Journal of Marine Science, 2015, 72 (6), pp.1744-1755. ⟨10.1093/icesjms/fsu161⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1093/icesjms/fsu161 hal-03334805 https://hal.science/hal-03334805 doi:10.1093/icesjms/fsu161 |
op_doi |
https://doi.org/10.1093/icesjms/fsu161 |
container_title |
ICES Journal of Marine Science |
container_volume |
72 |
container_issue |
6 |
container_start_page |
1744 |
op_container_end_page |
1755 |
_version_ |
1810469691548762112 |