Phytoplankton light absorption and the package effect in relation to photosynthetic and photoprotective pigments in the northern tip of Antarctic Peninsula
International audience This study investigates the variability in the spectral absorption of phytoplankton in Antarctic waters. A large in situ data set comprising phytoplankton pigments and hyperspectral absorption was measured in the northern tip of Antarctic Peninsula during 2013 and 2014 summers...
Published in: | Journal of Geophysical Research: Oceans |
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Online Access: | https://hal.archives-ouvertes.fr/hal-03502951 https://hal.archives-ouvertes.fr/hal-03502951/document https://hal.archives-ouvertes.fr/hal-03502951/file/JGR%20Oceans%20-%202017%20-%20Ferreira%20-%20Phytoplankton%20light%20absorption%20and%20the%20package%20effect%20in%20relation%20to%20photosynthetic%20and.pdf https://doi.org/10.1002/2017JC012964 |
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ftccsdartic:oai:HAL:hal-03502951v1 2023-05-15T13:42:49+02:00 Phytoplankton light absorption and the package effect in relation to photosynthetic and photoprotective pigments in the northern tip of Antarctic Peninsula Ferreira, Amabile Ciotti, Aurea M. Mendes, Carlos Rafael B. Uitz, Julia Bricaud, Annick Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2017 https://hal.archives-ouvertes.fr/hal-03502951 https://hal.archives-ouvertes.fr/hal-03502951/document https://hal.archives-ouvertes.fr/hal-03502951/file/JGR%20Oceans%20-%202017%20-%20Ferreira%20-%20Phytoplankton%20light%20absorption%20and%20the%20package%20effect%20in%20relation%20to%20photosynthetic%20and.pdf https://doi.org/10.1002/2017JC012964 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1002/2017JC012964 hal-03502951 https://hal.archives-ouvertes.fr/hal-03502951 https://hal.archives-ouvertes.fr/hal-03502951/document https://hal.archives-ouvertes.fr/hal-03502951/file/JGR%20Oceans%20-%202017%20-%20Ferreira%20-%20Phytoplankton%20light%20absorption%20and%20the%20package%20effect%20in%20relation%20to%20photosynthetic%20and.pdf doi:10.1002/2017JC012964 http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS https://hal.archives-ouvertes.fr/hal-03502951 JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2017, 122 (9), pp.7344-7363. ⟨10.1002/2017JC012964⟩ [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2017 ftccsdartic https://doi.org/10.1002/2017JC012964 2022-01-08T23:28:09Z International audience This study investigates the variability in the spectral absorption of phytoplankton in Antarctic waters. A large in situ data set comprising phytoplankton pigments and hyperspectral absorption was measured in the northern tip of Antarctic Peninsula during 2013 and 2014 summers at several depths. A proxy of package effect was estimated from the phytoplankton absorption spectra, independently of chlorophyll a. Variations in the concentration of photosynthetic and photoprotective pigments were discernible by changes in this metric but not in the chlorophyll a specific absorption coefficient of phytoplankton. The fucoxanthin to chlorophyll a ratio correlated positively to package effect due to an increase in cell size of phytoplankton (diatoms) and increasing fucoxanthin content per cell to maximize light harvesting in depth. The package effect was found to covary inversely with photoprotective pigments relative to chlorophyll a, partially due to their contribution to enhance absorption in the blue part of the spectrum. Using a cluster analysis (k-means algorithm) on the phytoplankton absorption spectra, we illustrate the capacity to identify a regular increase in the degree of package effect. This approach can be useful to classify the phytoplankton assemblages in Antarctic waters according to different degrees of pigment packaging, each one related to a specific pigment composition. Our results demonstrate the potential for this classification at different temporal and spatial scales from ocean color satellite data. This should improve our understanding of deviations in global bio-optical algorithms when applied to the Southern Ocean. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Southern Ocean Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Antarctic Peninsula Southern Ocean Journal of Geophysical Research: Oceans 122 9 7344 7363 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Ferreira, Amabile Ciotti, Aurea M. Mendes, Carlos Rafael B. Uitz, Julia Bricaud, Annick Phytoplankton light absorption and the package effect in relation to photosynthetic and photoprotective pigments in the northern tip of Antarctic Peninsula |
topic_facet |
[SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience This study investigates the variability in the spectral absorption of phytoplankton in Antarctic waters. A large in situ data set comprising phytoplankton pigments and hyperspectral absorption was measured in the northern tip of Antarctic Peninsula during 2013 and 2014 summers at several depths. A proxy of package effect was estimated from the phytoplankton absorption spectra, independently of chlorophyll a. Variations in the concentration of photosynthetic and photoprotective pigments were discernible by changes in this metric but not in the chlorophyll a specific absorption coefficient of phytoplankton. The fucoxanthin to chlorophyll a ratio correlated positively to package effect due to an increase in cell size of phytoplankton (diatoms) and increasing fucoxanthin content per cell to maximize light harvesting in depth. The package effect was found to covary inversely with photoprotective pigments relative to chlorophyll a, partially due to their contribution to enhance absorption in the blue part of the spectrum. Using a cluster analysis (k-means algorithm) on the phytoplankton absorption spectra, we illustrate the capacity to identify a regular increase in the degree of package effect. This approach can be useful to classify the phytoplankton assemblages in Antarctic waters according to different degrees of pigment packaging, each one related to a specific pigment composition. Our results demonstrate the potential for this classification at different temporal and spatial scales from ocean color satellite data. This should improve our understanding of deviations in global bio-optical algorithms when applied to the Southern Ocean. |
author2 |
Laboratoire d'océanographie de Villefranche (LOV) Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Ferreira, Amabile Ciotti, Aurea M. Mendes, Carlos Rafael B. Uitz, Julia Bricaud, Annick |
author_facet |
Ferreira, Amabile Ciotti, Aurea M. Mendes, Carlos Rafael B. Uitz, Julia Bricaud, Annick |
author_sort |
Ferreira, Amabile |
title |
Phytoplankton light absorption and the package effect in relation to photosynthetic and photoprotective pigments in the northern tip of Antarctic Peninsula |
title_short |
Phytoplankton light absorption and the package effect in relation to photosynthetic and photoprotective pigments in the northern tip of Antarctic Peninsula |
title_full |
Phytoplankton light absorption and the package effect in relation to photosynthetic and photoprotective pigments in the northern tip of Antarctic Peninsula |
title_fullStr |
Phytoplankton light absorption and the package effect in relation to photosynthetic and photoprotective pigments in the northern tip of Antarctic Peninsula |
title_full_unstemmed |
Phytoplankton light absorption and the package effect in relation to photosynthetic and photoprotective pigments in the northern tip of Antarctic Peninsula |
title_sort |
phytoplankton light absorption and the package effect in relation to photosynthetic and photoprotective pigments in the northern tip of antarctic peninsula |
publisher |
HAL CCSD |
publishDate |
2017 |
url |
https://hal.archives-ouvertes.fr/hal-03502951 https://hal.archives-ouvertes.fr/hal-03502951/document https://hal.archives-ouvertes.fr/hal-03502951/file/JGR%20Oceans%20-%202017%20-%20Ferreira%20-%20Phytoplankton%20light%20absorption%20and%20the%20package%20effect%20in%20relation%20to%20photosynthetic%20and.pdf https://doi.org/10.1002/2017JC012964 |
geographic |
Antarctic Antarctic Peninsula Southern Ocean |
geographic_facet |
Antarctic Antarctic Peninsula Southern Ocean |
genre |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Southern Ocean |
op_source |
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS https://hal.archives-ouvertes.fr/hal-03502951 JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 2017, 122 (9), pp.7344-7363. ⟨10.1002/2017JC012964⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2017JC012964 hal-03502951 https://hal.archives-ouvertes.fr/hal-03502951 https://hal.archives-ouvertes.fr/hal-03502951/document https://hal.archives-ouvertes.fr/hal-03502951/file/JGR%20Oceans%20-%202017%20-%20Ferreira%20-%20Phytoplankton%20light%20absorption%20and%20the%20package%20effect%20in%20relation%20to%20photosynthetic%20and.pdf doi:10.1002/2017JC012964 |
op_rights |
http://hal.archives-ouvertes.fr/licences/copyright/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2017JC012964 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
122 |
container_issue |
9 |
container_start_page |
7344 |
op_container_end_page |
7363 |
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1766173149217423360 |