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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Autores principales:	Nicole Trefault, Rodrigo De la Iglesia, Mario Moreno-Pino, Adriana Lopes dos Santos, Catherine Gérikas Ribeiro, Génesis Parada-Pozo, Antonia Cristi, Dominique Marie, Daniel Vaulot
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/13e583619a09448fab318af71c4687fa
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spelling	oai:doaj.org-article:13e583619a09448fab318af71c4687fa2021-12-02T14:12:09ZAnnual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula10.1038/s41598-020-80568-82045-2322https://doaj.org/article/13e583619a09448fab318af71c4687fa2021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-80568-8https://doaj.org/toc/2045-2322Abstract 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. 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, Haptophyta and Cryptophyta. 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. 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 represents 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.Nicole TrefaultRodrigo De la IglesiaMario Moreno-PinoAdriana Lopes dos SantosCatherine Gérikas RibeiroGénesis Parada-PozoAntonia CristiDominique MarieDaniel VaulotNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-16 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Nicole Trefault Rodrigo De la Iglesia Mario Moreno-Pino Adriana Lopes dos Santos Catherine Gérikas Ribeiro Génesis Parada-Pozo Antonia Cristi Dominique Marie Daniel Vaulot Annual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula
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. 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, Haptophyta and Cryptophyta. 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. 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 represents 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.
format	article
author	Nicole Trefault Rodrigo De la Iglesia Mario Moreno-Pino Adriana Lopes dos Santos Catherine Gérikas Ribeiro Génesis Parada-Pozo Antonia Cristi Dominique Marie Daniel Vaulot
author_facet	Nicole Trefault Rodrigo De la Iglesia Mario Moreno-Pino Adriana Lopes dos Santos Catherine Gérikas Ribeiro Génesis Parada-Pozo Antonia Cristi Dominique Marie Daniel Vaulot
author_sort	Nicole Trefault
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	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/13e583619a09448fab318af71c4687fa
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Annual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula

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