Photosynthesis and calcification in the articulated coralline alga Ellisolandia elongata (Corallinales, Rhodophyta) from intertidal rock pools
International audience Calcifying coralline algae are functionally important in many ecosystems but their existence is now threatened by global climate change. The aim of this study is to improve our understanding of coralline algal metabolic functions and their interactions by assessing the respira...
Published in: | European Journal of Phycology |
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Main Authors: | , , |
Other Authors: | , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2015
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Online Access: | https://hal.sorbonne-universite.fr/hal-01281671 https://hal.sorbonne-universite.fr/hal-01281671/document https://hal.sorbonne-universite.fr/hal-01281671/file/Egilsdottir_2016_Photosynthesis_and.pdf https://doi.org/10.1080/09670262.2015.1101165 |
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ftccsdartic:oai:HAL:hal-01281671v1 |
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Open Polar |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
calcification Corallina elongata coralline algae Ellisolandia elongata irradiance P-E curve photosynthesis tidal pool [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
spellingShingle |
calcification Corallina elongata coralline algae Ellisolandia elongata irradiance P-E curve photosynthesis tidal pool [SDE.BE]Environmental Sciences/Biodiversity and Ecology Egilsdottir, Hronn Olafsson, Jon Martin, Sophie Photosynthesis and calcification in the articulated coralline alga Ellisolandia elongata (Corallinales, Rhodophyta) from intertidal rock pools |
topic_facet |
calcification Corallina elongata coralline algae Ellisolandia elongata irradiance P-E curve photosynthesis tidal pool [SDE.BE]Environmental Sciences/Biodiversity and Ecology |
description |
International audience Calcifying coralline algae are functionally important in many ecosystems but their existence is now threatened by global climate change. The aim of this study is to improve our understanding of coralline algal metabolic functions and their interactions by assessing the respiration, photosynthesis and calcification rates in an articulated (geniculate) coralline alga, Ellisolandia elongata. Algal samples selected for this case study were collected from an intertidal rock-pool on the coast of Brittany (France). Physiological rates were assessed in summer and winter by measuring the concentration of oxygen, dissolved inorganic carbon and total alkalinity fluxes at five irradiance levels and in the dark using incubation chambers. Respiration, photosynthetic and calcification rates were strongly affected by seasonal changes. Respiration increased with temperature, being ten-fold higher in summer than in winter. Photosynthetic parameters of the photosynthesis-irradiance (P-E) curve, Pgmax, Pnmax and Ek, were two- to three-fold higher in summer relative to winter. Photoinhibition was observed under high irradiance indicating an acclimation of E. elongata to low irradiance levels. Parameters of the calcification-irradiance (G-E) curve, Gmax and Ek, were approximately two-fold higher in summer compared with winter. In summer, calcification rates were more strongly inhibited under high irradiance than photosynthetic rates, suggesting a dynamic relationship between these metabolic processes. By inhabiting intertidal rock pools, E. elongata exhibits tolerance to a dynamic physico-chemical environment. Information on respiration, photosynthesis and calcification rates in a calcifying coralline alga inhabiting such dynamic environments in terms of pH and temperature is important in order to better understand how ocean acidification and warming will affect coralline algae in the future. |
author2 |
Faculty of Earth Sciences University of Iceland Reykjavik Marine Research Institute Ecogéochimie et Fonctionnement des Ecosystèmes Benthiques (EFEB) Adaptation et diversité en milieu marin (AD2M) Station biologique de Roscoff Roscoff (SBR) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Station biologique de Roscoff Roscoff (SBR) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Egilsdottir, Hronn Olafsson, Jon Martin, Sophie |
author_facet |
Egilsdottir, Hronn Olafsson, Jon Martin, Sophie |
author_sort |
Egilsdottir, Hronn |
title |
Photosynthesis and calcification in the articulated coralline alga Ellisolandia elongata (Corallinales, Rhodophyta) from intertidal rock pools |
title_short |
Photosynthesis and calcification in the articulated coralline alga Ellisolandia elongata (Corallinales, Rhodophyta) from intertidal rock pools |
title_full |
Photosynthesis and calcification in the articulated coralline alga Ellisolandia elongata (Corallinales, Rhodophyta) from intertidal rock pools |
title_fullStr |
Photosynthesis and calcification in the articulated coralline alga Ellisolandia elongata (Corallinales, Rhodophyta) from intertidal rock pools |
title_full_unstemmed |
Photosynthesis and calcification in the articulated coralline alga Ellisolandia elongata (Corallinales, Rhodophyta) from intertidal rock pools |
title_sort |
photosynthesis and calcification in the articulated coralline alga ellisolandia elongata (corallinales, rhodophyta) from intertidal rock pools |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal.sorbonne-universite.fr/hal-01281671 https://hal.sorbonne-universite.fr/hal-01281671/document https://hal.sorbonne-universite.fr/hal-01281671/file/Egilsdottir_2016_Photosynthesis_and.pdf https://doi.org/10.1080/09670262.2015.1101165 |
genre |
Ocean acidification |
genre_facet |
Ocean acidification |
op_source |
ISSN: 0967-0262 EISSN: 1469-4433 European Journal of Phycology https://hal.sorbonne-universite.fr/hal-01281671 European Journal of Phycology, 2015, 51 (1), pp.59-70. ⟨10.1080/09670262.2015.1101165⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1080/09670262.2015.1101165 hal-01281671 https://hal.sorbonne-universite.fr/hal-01281671 https://hal.sorbonne-universite.fr/hal-01281671/document https://hal.sorbonne-universite.fr/hal-01281671/file/Egilsdottir_2016_Photosynthesis_and.pdf doi:10.1080/09670262.2015.1101165 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1080/09670262.2015.1101165 |
container_title |
European Journal of Phycology |
container_volume |
51 |
container_issue |
1 |
container_start_page |
59 |
op_container_end_page |
70 |
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1792052641679802368 |
spelling |
ftccsdartic:oai:HAL:hal-01281671v1 2024-02-27T08:44:15+00:00 Photosynthesis and calcification in the articulated coralline alga Ellisolandia elongata (Corallinales, Rhodophyta) from intertidal rock pools Egilsdottir, Hronn Olafsson, Jon Martin, Sophie Faculty of Earth Sciences University of Iceland Reykjavik Marine Research Institute Ecogéochimie et Fonctionnement des Ecosystèmes Benthiques (EFEB) Adaptation et diversité en milieu marin (AD2M) Station biologique de Roscoff Roscoff (SBR) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Station biologique de Roscoff Roscoff (SBR) Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2015-11 https://hal.sorbonne-universite.fr/hal-01281671 https://hal.sorbonne-universite.fr/hal-01281671/document https://hal.sorbonne-universite.fr/hal-01281671/file/Egilsdottir_2016_Photosynthesis_and.pdf https://doi.org/10.1080/09670262.2015.1101165 en eng HAL CCSD Taylor & Francis info:eu-repo/semantics/altIdentifier/doi/10.1080/09670262.2015.1101165 hal-01281671 https://hal.sorbonne-universite.fr/hal-01281671 https://hal.sorbonne-universite.fr/hal-01281671/document https://hal.sorbonne-universite.fr/hal-01281671/file/Egilsdottir_2016_Photosynthesis_and.pdf doi:10.1080/09670262.2015.1101165 info:eu-repo/semantics/OpenAccess ISSN: 0967-0262 EISSN: 1469-4433 European Journal of Phycology https://hal.sorbonne-universite.fr/hal-01281671 European Journal of Phycology, 2015, 51 (1), pp.59-70. ⟨10.1080/09670262.2015.1101165⟩ calcification Corallina elongata coralline algae Ellisolandia elongata irradiance P-E curve photosynthesis tidal pool [SDE.BE]Environmental Sciences/Biodiversity and Ecology info:eu-repo/semantics/article Journal articles 2015 ftccsdartic https://doi.org/10.1080/09670262.2015.1101165 2024-01-28T03:53:06Z International audience Calcifying coralline algae are functionally important in many ecosystems but their existence is now threatened by global climate change. The aim of this study is to improve our understanding of coralline algal metabolic functions and their interactions by assessing the respiration, photosynthesis and calcification rates in an articulated (geniculate) coralline alga, Ellisolandia elongata. Algal samples selected for this case study were collected from an intertidal rock-pool on the coast of Brittany (France). Physiological rates were assessed in summer and winter by measuring the concentration of oxygen, dissolved inorganic carbon and total alkalinity fluxes at five irradiance levels and in the dark using incubation chambers. Respiration, photosynthetic and calcification rates were strongly affected by seasonal changes. Respiration increased with temperature, being ten-fold higher in summer than in winter. Photosynthetic parameters of the photosynthesis-irradiance (P-E) curve, Pgmax, Pnmax and Ek, were two- to three-fold higher in summer relative to winter. Photoinhibition was observed under high irradiance indicating an acclimation of E. elongata to low irradiance levels. Parameters of the calcification-irradiance (G-E) curve, Gmax and Ek, were approximately two-fold higher in summer compared with winter. In summer, calcification rates were more strongly inhibited under high irradiance than photosynthetic rates, suggesting a dynamic relationship between these metabolic processes. By inhabiting intertidal rock pools, E. elongata exhibits tolerance to a dynamic physico-chemical environment. Information on respiration, photosynthesis and calcification rates in a calcifying coralline alga inhabiting such dynamic environments in terms of pH and temperature is important in order to better understand how ocean acidification and warming will affect coralline algae in the future. Article in Journal/Newspaper Ocean acidification Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) European Journal of Phycology 51 1 59 70 |