The coccolithophores Emiliania huxleyi and Coccolithus pelagicus: Extant populations from the Norwegian–Iceland Seas and Fram Strait
International audience The distributions of the coccolithophore species Emiliania huxleyi and Coccolithus pelagicus (heterococcolith-bearing phase) in the northern North Atlantic were investigated along two zonal transects crossing Fram Strait and the Norwegian–Iceland Sea, respectively, each conduc...
Published in: | Deep Sea Research Part I: Oceanographic Research Papers |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://doi.org/10.1016/j.dsr.2014.11.012 https://hal.archives-ouvertes.fr/hal-02128690 |
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fttriple:oai:gotriple.eu:10670/1.5geira 2023-05-15T15:16:40+02:00 The coccolithophores Emiliania huxleyi and Coccolithus pelagicus: Extant populations from the Norwegian–Iceland Seas and Fram Strait Dylmer, C. V. Giraudeau, J. Hanquiez, V. Husum, K. Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) University of Tromsø (UiT) 2015-01-01 https://doi.org/10.1016/j.dsr.2014.11.012 https://hal.archives-ouvertes.fr/hal-02128690 en eng HAL CCSD Elsevier hal-02128690 doi:10.1016/j.dsr.2014.11.012 10670/1.5geira https://hal.archives-ouvertes.fr/hal-02128690 undefined Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers Deep Sea Research Part I: Oceanographic Research Papers, Elsevier, 2015, 98, pp.1-9. ⟨10.1016/j.dsr.2014.11.012⟩ Seasonality Coccolithophores Nordic Seas Fram Strait Water masses geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2015 fttriple https://doi.org/10.1016/j.dsr.2014.11.012 2023-01-22T18:27:12Z International audience The distributions of the coccolithophore species Emiliania huxleyi and Coccolithus pelagicus (heterococcolith-bearing phase) in the northern North Atlantic were investigated along two zonal transects crossing Fram Strait and the Norwegian–Iceland Sea, respectively, each conducted during both July 2011 and September–October 2007. Remote-sensing images as well as CTD and ARGO profiles were used to constrain the physico-chemical state of the surface water and surface mixed layer at the time of sampling. Strong seasonal differences in bulk coccolithophore standing stocks characterized the northern and southern transects, where the maximum values of 53×103 cells/l (fall) and 70×103 cells/l (summer), respectively, were essentially explained by E. huxleyi. This pattern confirms previous findings of a summer to fall northwestward shift in peak coccolithophore cell densities within the Nordic Seas. While depicting an overall zonal shift in high cell densities between the summer (Norwegian Sea) and fall (northern Iceland Sea) conditions, the southern transects were additionally characterized by local peak coccolithophore concentrations associated with a geographically and temporally restricted convective process (Lofoten Gyre, summer), as well as an island mass effect (in the vicinity of Jan Mayen Island, fall).Maximum coccolithophore abundances within Fram Strait were found during both seasons close to the western frontal zone (Polar and Arctic Fronts) an area of strong density gradients where physical and chemical properties of the surface mixed layer are prone to enhance phytoplankton biomass and productivity. Here, changes in species dominance from E. huxleyi in summer, to C. pelagicus in fall, were related to the strengthened influence during summer, of surface AW, as well as to high July solar irradiance, within an area usually characterized by C. pelagicus-dominated low density populations. Article in Journal/Newspaper Arctic Fram Strait Iceland Jan Mayen Jan Mayen Island Lofoten Nordic Seas North Atlantic Norwegian Sea Phytoplankton Unknown Arctic Jan Mayen Lofoten Norwegian Sea Deep Sea Research Part I: Oceanographic Research Papers 98 1 9 |
institution |
Open Polar |
collection |
Unknown |
op_collection_id |
fttriple |
language |
English |
topic |
Seasonality Coccolithophores Nordic Seas Fram Strait Water masses geo envir |
spellingShingle |
Seasonality Coccolithophores Nordic Seas Fram Strait Water masses geo envir Dylmer, C. V. Giraudeau, J. Hanquiez, V. Husum, K. The coccolithophores Emiliania huxleyi and Coccolithus pelagicus: Extant populations from the Norwegian–Iceland Seas and Fram Strait |
topic_facet |
Seasonality Coccolithophores Nordic Seas Fram Strait Water masses geo envir |
description |
International audience The distributions of the coccolithophore species Emiliania huxleyi and Coccolithus pelagicus (heterococcolith-bearing phase) in the northern North Atlantic were investigated along two zonal transects crossing Fram Strait and the Norwegian–Iceland Sea, respectively, each conducted during both July 2011 and September–October 2007. Remote-sensing images as well as CTD and ARGO profiles were used to constrain the physico-chemical state of the surface water and surface mixed layer at the time of sampling. Strong seasonal differences in bulk coccolithophore standing stocks characterized the northern and southern transects, where the maximum values of 53×103 cells/l (fall) and 70×103 cells/l (summer), respectively, were essentially explained by E. huxleyi. This pattern confirms previous findings of a summer to fall northwestward shift in peak coccolithophore cell densities within the Nordic Seas. While depicting an overall zonal shift in high cell densities between the summer (Norwegian Sea) and fall (northern Iceland Sea) conditions, the southern transects were additionally characterized by local peak coccolithophore concentrations associated with a geographically and temporally restricted convective process (Lofoten Gyre, summer), as well as an island mass effect (in the vicinity of Jan Mayen Island, fall).Maximum coccolithophore abundances within Fram Strait were found during both seasons close to the western frontal zone (Polar and Arctic Fronts) an area of strong density gradients where physical and chemical properties of the surface mixed layer are prone to enhance phytoplankton biomass and productivity. Here, changes in species dominance from E. huxleyi in summer, to C. pelagicus in fall, were related to the strengthened influence during summer, of surface AW, as well as to high July solar irradiance, within an area usually characterized by C. pelagicus-dominated low density populations. |
author2 |
Environnements et Paléoenvironnements OCéaniques (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) University of Tromsø (UiT) |
format |
Article in Journal/Newspaper |
author |
Dylmer, C. V. Giraudeau, J. Hanquiez, V. Husum, K. |
author_facet |
Dylmer, C. V. Giraudeau, J. Hanquiez, V. Husum, K. |
author_sort |
Dylmer, C. V. |
title |
The coccolithophores Emiliania huxleyi and Coccolithus pelagicus: Extant populations from the Norwegian–Iceland Seas and Fram Strait |
title_short |
The coccolithophores Emiliania huxleyi and Coccolithus pelagicus: Extant populations from the Norwegian–Iceland Seas and Fram Strait |
title_full |
The coccolithophores Emiliania huxleyi and Coccolithus pelagicus: Extant populations from the Norwegian–Iceland Seas and Fram Strait |
title_fullStr |
The coccolithophores Emiliania huxleyi and Coccolithus pelagicus: Extant populations from the Norwegian–Iceland Seas and Fram Strait |
title_full_unstemmed |
The coccolithophores Emiliania huxleyi and Coccolithus pelagicus: Extant populations from the Norwegian–Iceland Seas and Fram Strait |
title_sort |
coccolithophores emiliania huxleyi and coccolithus pelagicus: extant populations from the norwegian–iceland seas and fram strait |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://doi.org/10.1016/j.dsr.2014.11.012 https://hal.archives-ouvertes.fr/hal-02128690 |
geographic |
Arctic Jan Mayen Lofoten Norwegian Sea |
geographic_facet |
Arctic Jan Mayen Lofoten Norwegian Sea |
genre |
Arctic Fram Strait Iceland Jan Mayen Jan Mayen Island Lofoten Nordic Seas North Atlantic Norwegian Sea Phytoplankton |
genre_facet |
Arctic Fram Strait Iceland Jan Mayen Jan Mayen Island Lofoten Nordic Seas North Atlantic Norwegian Sea Phytoplankton |
op_source |
Hyper Article en Ligne - Sciences de l'Homme et de la Société ISSN: 0967-0637 Deep Sea Research Part I: Oceanographic Research Papers Deep Sea Research Part I: Oceanographic Research Papers, Elsevier, 2015, 98, pp.1-9. ⟨10.1016/j.dsr.2014.11.012⟩ |
op_relation |
hal-02128690 doi:10.1016/j.dsr.2014.11.012 10670/1.5geira https://hal.archives-ouvertes.fr/hal-02128690 |
op_rights |
undefined |
op_doi |
https://doi.org/10.1016/j.dsr.2014.11.012 |
container_title |
Deep Sea Research Part I: Oceanographic Research Papers |
container_volume |
98 |
container_start_page |
1 |
op_container_end_page |
9 |
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1766346965533065216 |