Annual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula
Abstract Year-round reports of phytoplankton dynamics in the West Antarctic Peninsula are rare and mainly limited to microscopy and/or pigment-based studies. We analyzed the phytoplankton community from coastal waters of Fildes Bay in the West Antarctic Peninsula between January 2014 and 2015 using...
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ftsorbonneuniv:oai:HAL:hal-03971876v1 2023-05-15T13:50:14+02:00 Annual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula Trefault, Nicole de la Iglesia, Rodrigo Moreno-Pino, Mario dos Santos, Adriana Lopes Ribeiro, Catherine Gérikas Cristi, Antonia Marie, Dominique Vaulot, Daniel Adaptation et diversité en milieu marin (ADMM) Institut national des sciences de l'Univers (INSU - CNRS)-Station biologique de Roscoff (SBR) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) 2023-02-03 https://hal.science/hal-03971876 https://doi.org/10.1101/2020.10.27.356600 en eng HAL CCSD info:eu-repo/semantics/altIdentifier/doi/10.1101/2020.10.27.356600 hal-03971876 https://hal.science/hal-03971876 BIORXIV: 2020.10.27.356600 doi:10.1101/2020.10.27.356600 https://hal.science/hal-03971876 2023 [SDE]Environmental Sciences info:eu-repo/semantics/preprint Preprints, Working Papers, . 2023 ftsorbonneuniv https://doi.org/10.1101/2020.10.27.356600 2023-02-07T23:43:07Z Abstract Year-round reports of phytoplankton dynamics in the West Antarctic Peninsula are rare and mainly limited to microscopy and/or pigment-based studies. We analyzed the phytoplankton community from coastal waters of Fildes Bay in the West Antarctic Peninsula between January 2014 and 2015 using metabarcoding of the nuclear and plastidial 18/16S rRNA gene from both size-fractionated and flow cytometry sorted samples. Each metabarcoding approach yielded a different image of the phytoplankton community with for example Prymnesiophyceae more prevalent in plastidial metabarcodes and Mamiellophyceae in nuclear ones. Overall 14 classes of photosynthetic eukaryotes were present in our samples with the following dominating: Bacillariophyta (diatoms), Pelagophyceae and Dictyochophyceae for division Ochrophyta, Mamiellophyceae and Pyramimonadophyceae for division Chlorophyta, Prymnesiophyceae and Cryptophyceae. Diatoms were dominant in the larger size fractions and during summer, while Prymnesiophyceae and Cryptophyceae were dominant in colder seasons. Pelagophyceae were particularly abundant towards the end of autumn (May). In addition of Micromonas polaris and Micromonas sp. clade B3, both previously reported in Arctic waters, we detected a new Micromonas 18S rRNA sequence signature, close to but clearly distinct from M. polaris , which potentially represent a new clade specific of the Antarctic. These results highlight the need for complementary strategies as well as the importance of year-round monitoring for a comprehensive description of phytoplankton communities in Antarctic coastal waters. Report Antarc* Antarctic Antarctic Peninsula Arctic Phytoplankton HAL Sorbonne Université Arctic Antarctic The Antarctic Antarctic Peninsula Fildes ENVELOPE(-58.817,-58.817,-62.217,-62.217) |
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HAL Sorbonne Université |
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ftsorbonneuniv |
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English |
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[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Trefault, Nicole de la Iglesia, Rodrigo Moreno-Pino, Mario dos Santos, Adriana Lopes Ribeiro, Catherine Gérikas Cristi, Antonia Marie, Dominique Vaulot, Daniel Annual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula |
topic_facet |
[SDE]Environmental Sciences |
description |
Abstract Year-round reports of phytoplankton dynamics in the West Antarctic Peninsula are rare and mainly limited to microscopy and/or pigment-based studies. We analyzed the phytoplankton community from coastal waters of Fildes Bay in the West Antarctic Peninsula between January 2014 and 2015 using metabarcoding of the nuclear and plastidial 18/16S rRNA gene from both size-fractionated and flow cytometry sorted samples. Each metabarcoding approach yielded a different image of the phytoplankton community with for example Prymnesiophyceae more prevalent in plastidial metabarcodes and Mamiellophyceae in nuclear ones. Overall 14 classes of photosynthetic eukaryotes were present in our samples with the following dominating: Bacillariophyta (diatoms), Pelagophyceae and Dictyochophyceae for division Ochrophyta, Mamiellophyceae and Pyramimonadophyceae for division Chlorophyta, Prymnesiophyceae and Cryptophyceae. Diatoms were dominant in the larger size fractions and during summer, while Prymnesiophyceae and Cryptophyceae were dominant in colder seasons. Pelagophyceae were particularly abundant towards the end of autumn (May). In addition of Micromonas polaris and Micromonas sp. clade B3, both previously reported in Arctic waters, we detected a new Micromonas 18S rRNA sequence signature, close to but clearly distinct from M. polaris , which potentially represent a new clade specific of the Antarctic. These results highlight the need for complementary strategies as well as the importance of year-round monitoring for a comprehensive description of phytoplankton communities in Antarctic coastal waters. |
author2 |
Adaptation et diversité en milieu marin (ADMM) Institut national des sciences de l'Univers (INSU - CNRS)-Station biologique de Roscoff (SBR) Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS) |
format |
Report |
author |
Trefault, Nicole de la Iglesia, Rodrigo Moreno-Pino, Mario dos Santos, Adriana Lopes Ribeiro, Catherine Gérikas Cristi, Antonia Marie, Dominique Vaulot, Daniel |
author_facet |
Trefault, Nicole de la Iglesia, Rodrigo Moreno-Pino, Mario dos Santos, Adriana Lopes Ribeiro, Catherine Gérikas Cristi, Antonia Marie, Dominique Vaulot, Daniel |
author_sort |
Trefault, Nicole |
title |
Annual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula |
title_short |
Annual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula |
title_full |
Annual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula |
title_fullStr |
Annual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula |
title_full_unstemmed |
Annual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula |
title_sort |
annual phytoplankton dynamics in coastal waters from fildes bay, western antarctic peninsula |
publisher |
HAL CCSD |
publishDate |
2023 |
url |
https://hal.science/hal-03971876 https://doi.org/10.1101/2020.10.27.356600 |
long_lat |
ENVELOPE(-58.817,-58.817,-62.217,-62.217) |
geographic |
Arctic Antarctic The Antarctic Antarctic Peninsula Fildes |
geographic_facet |
Arctic Antarctic The Antarctic Antarctic Peninsula Fildes |
genre |
Antarc* Antarctic Antarctic Peninsula Arctic Phytoplankton |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Arctic Phytoplankton |
op_source |
https://hal.science/hal-03971876 2023 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1101/2020.10.27.356600 hal-03971876 https://hal.science/hal-03971876 BIORXIV: 2020.10.27.356600 doi:10.1101/2020.10.27.356600 |
op_doi |
https://doi.org/10.1101/2020.10.27.356600 |
_version_ |
1766253263563259904 |