Assemblages of phytoplankton pigments along a shipping line through the North Atlantic and Tropical Pacific
International audience A set of phytoplankton pigments measurements collected on eight quarterly transects from France to New Caledonia is analyzed, in order to identify the main assemblages of phytoplankton, and to relate their occurrence with oceanic conditions. Pigments concentrations are first d...
Published in: | Progress in Oceanography |
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Main Authors: | , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2007
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Online Access: | https://hal.science/hal-00153299 https://hal.science/hal-00153299/document https://hal.science/hal-00153299/file/Phgroups_PIO_yd.pdf https://doi.org/10.1016/j.pocean.2007.02.003 |
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Université de Paris: Portail HAL |
op_collection_id |
ftunivparis |
language |
English |
topic |
phytoplankton North Atlantic equatorial Pacific photosynthetic pigments clustering [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
phytoplankton North Atlantic equatorial Pacific photosynthetic pigments clustering [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Dandonneau, Yves Niang, Awa Assemblages of phytoplankton pigments along a shipping line through the North Atlantic and Tropical Pacific |
topic_facet |
phytoplankton North Atlantic equatorial Pacific photosynthetic pigments clustering [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience A set of phytoplankton pigments measurements collected on eight quarterly transects from France to New Caledonia is analyzed, in order to identify the main assemblages of phytoplankton, and to relate their occurrence with oceanic conditions. Pigments concentrations are first divided by the sum monovinyl chlorophyll a plus divinyl chlorophyll a to remove the effect of biomass, and, second, normalized, to give an equal weight to all pigments. The resulting 17 pigments ≥ 799 observations matrix is then classified into ten clusters using neural methodology. Eight out of these ten clusters have a well marked regional or seasonal character, thus evidencing adapted responses of the phytoplankton communities. The main gradient opposes two clusters with high fucoxanthin and chlorophyll c1+2 in the north Atlantic in January, April and July, to three clusters in the South Pacific Subtropical Gyre with high divinyl chlorophyll a, zeaxanthin and phycoerythrin. One of the clusters in the South Pacific Subtropical Gyre has relatively high zeaxanthin and phycoerythrin contents and dominates in November and February (austral summer) while another one, with relatively high divinyl chlorophylls a and b dominates in May and August (austral winter). The third one in this area is characterized by high carotene concentration and its occurrence peaks in February and May. In the equatorial currents system, one cluster, rich in chlorophylls b and c1+2, is strictly located in a narrow zone centred at the equator, while another one, with relatively high violaxanthin concentration, is restricted to the high nutrient - low chlorophyll waters in only the southern part of the South Equatorial Current. One cluster with relatively high prasinoxanthin content has a spatial distribution that spans the entire South Equatorial Current. Two clusters have a ubiquitous distribution: one in the equatorial Pacific, in the Carribbean Sea and in the north Atlantic in summer has pigments concentrations that are close to the average ... |
author2 |
Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Université Cheikh Anta Diop de Dakar Sénégal (UCAD) PROOF/GeP&CO |
format |
Article in Journal/Newspaper |
author |
Dandonneau, Yves Niang, Awa |
author_facet |
Dandonneau, Yves Niang, Awa |
author_sort |
Dandonneau, Yves |
title |
Assemblages of phytoplankton pigments along a shipping line through the North Atlantic and Tropical Pacific |
title_short |
Assemblages of phytoplankton pigments along a shipping line through the North Atlantic and Tropical Pacific |
title_full |
Assemblages of phytoplankton pigments along a shipping line through the North Atlantic and Tropical Pacific |
title_fullStr |
Assemblages of phytoplankton pigments along a shipping line through the North Atlantic and Tropical Pacific |
title_full_unstemmed |
Assemblages of phytoplankton pigments along a shipping line through the North Atlantic and Tropical Pacific |
title_sort |
assemblages of phytoplankton pigments along a shipping line through the north atlantic and tropical pacific |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00153299 https://hal.science/hal-00153299/document https://hal.science/hal-00153299/file/Phgroups_PIO_yd.pdf https://doi.org/10.1016/j.pocean.2007.02.003 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
ISSN: 0079-6611 Progress in Oceanography https://hal.science/hal-00153299 Progress in Oceanography, 2007, 73 (2), pp.127-144. ⟨10.1016/j.pocean.2007.02.003⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pocean.2007.02.003 hal-00153299 https://hal.science/hal-00153299 https://hal.science/hal-00153299/document https://hal.science/hal-00153299/file/Phgroups_PIO_yd.pdf doi:10.1016/j.pocean.2007.02.003 IRD: fdi:010040645 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.pocean.2007.02.003 |
container_title |
Progress in Oceanography |
container_volume |
73 |
container_issue |
2 |
container_start_page |
127 |
op_container_end_page |
144 |
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1799484556396462080 |
spelling |
ftunivparis:oai:HAL:hal-00153299v1 2024-05-19T07:44:43+00:00 Assemblages of phytoplankton pigments along a shipping line through the North Atlantic and Tropical Pacific Dandonneau, Yves Niang, Awa Laboratoire d'Océanographie et du Climat : Expérimentations et Approches Numériques (LOCEAN) Muséum national d'Histoire naturelle (MNHN)-Institut de Recherche pour le Développement (IRD)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Institut Pierre-Simon-Laplace (IPSL (FR_636)) École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL) Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris Diderot - Paris 7 (UPD7)-École polytechnique (X)-Centre National d'Études Spatiales Toulouse (CNES)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) Université Cheikh Anta Diop de Dakar Sénégal (UCAD) PROOF/GeP&CO 2007-03-12 https://hal.science/hal-00153299 https://hal.science/hal-00153299/document https://hal.science/hal-00153299/file/Phgroups_PIO_yd.pdf https://doi.org/10.1016/j.pocean.2007.02.003 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.pocean.2007.02.003 hal-00153299 https://hal.science/hal-00153299 https://hal.science/hal-00153299/document https://hal.science/hal-00153299/file/Phgroups_PIO_yd.pdf doi:10.1016/j.pocean.2007.02.003 IRD: fdi:010040645 info:eu-repo/semantics/OpenAccess ISSN: 0079-6611 Progress in Oceanography https://hal.science/hal-00153299 Progress in Oceanography, 2007, 73 (2), pp.127-144. ⟨10.1016/j.pocean.2007.02.003⟩ phytoplankton North Atlantic equatorial Pacific photosynthetic pigments clustering [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2007 ftunivparis https://doi.org/10.1016/j.pocean.2007.02.003 2024-04-23T03:49:32Z International audience A set of phytoplankton pigments measurements collected on eight quarterly transects from France to New Caledonia is analyzed, in order to identify the main assemblages of phytoplankton, and to relate their occurrence with oceanic conditions. Pigments concentrations are first divided by the sum monovinyl chlorophyll a plus divinyl chlorophyll a to remove the effect of biomass, and, second, normalized, to give an equal weight to all pigments. The resulting 17 pigments ≥ 799 observations matrix is then classified into ten clusters using neural methodology. Eight out of these ten clusters have a well marked regional or seasonal character, thus evidencing adapted responses of the phytoplankton communities. The main gradient opposes two clusters with high fucoxanthin and chlorophyll c1+2 in the north Atlantic in January, April and July, to three clusters in the South Pacific Subtropical Gyre with high divinyl chlorophyll a, zeaxanthin and phycoerythrin. One of the clusters in the South Pacific Subtropical Gyre has relatively high zeaxanthin and phycoerythrin contents and dominates in November and February (austral summer) while another one, with relatively high divinyl chlorophylls a and b dominates in May and August (austral winter). The third one in this area is characterized by high carotene concentration and its occurrence peaks in February and May. In the equatorial currents system, one cluster, rich in chlorophylls b and c1+2, is strictly located in a narrow zone centred at the equator, while another one, with relatively high violaxanthin concentration, is restricted to the high nutrient - low chlorophyll waters in only the southern part of the South Equatorial Current. One cluster with relatively high prasinoxanthin content has a spatial distribution that spans the entire South Equatorial Current. Two clusters have a ubiquitous distribution: one in the equatorial Pacific, in the Carribbean Sea and in the north Atlantic in summer has pigments concentrations that are close to the average ... Article in Journal/Newspaper North Atlantic Université de Paris: Portail HAL Progress in Oceanography 73 2 127 144 |