Small pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge

Abstract Small pigmented eukaryotes (⩽ 5 µm) are an important, but overlooked component of global marine phytoplankton. The Amazon River plume delivers nutrients into the oligotrophic western tropical North Atlantic, shades the deeper waters, and drives the structure of microphytoplankton (> 20 µ...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Sophie Charvet, Eunsoo Kim, Ajit Subramaniam, Joseph Montoya, Solange Duhamel
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/3c19ec4f97304cddae81b5bcd4b7e754
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:3c19ec4f97304cddae81b5bcd4b7e754
record_format	dspace
spelling	oai:doaj.org-article:3c19ec4f97304cddae81b5bcd4b7e7542021-12-02T15:07:53ZSmall pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge10.1038/s41598-021-95676-22045-2322https://doaj.org/article/3c19ec4f97304cddae81b5bcd4b7e7542021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-95676-2https://doaj.org/toc/2045-2322Abstract Small pigmented eukaryotes (⩽ 5 µm) are an important, but overlooked component of global marine phytoplankton. The Amazon River plume delivers nutrients into the oligotrophic western tropical North Atlantic, shades the deeper waters, and drives the structure of microphytoplankton (> 20 µm) communities. For small pigmented eukaryotes, however, diversity and distribution in the region remain unknown, despite their significant contribution to open ocean primary production and other biogeochemical processes. To investigate how habitats created by the Amazon river plume shape small pigmented eukaryote communities, we used high-throughput sequencing of the 18S ribosomal RNA genes from up to five distinct small pigmented eukaryote cell populations, identified and sorted by flow cytometry. Small pigmented eukaryotes dominated small phytoplankton biomass across all habitat types, but the population abundances varied among stations resulting in a random distribution. Small pigmented eukaryote communities were consistently dominated by Chloropicophyceae (0.8–2 µm) and Bacillariophyceae (0.8–3.5 µm), accompanied by MOCH-5 at the surface or by Dinophyceae at the chlorophyll maximum. Taxonomic composition only displayed differences in the old plume core and at one of the plume margin stations. Such results reflect the dynamic interactions of the plume and offshore oceanic waters and suggest that the resident small pigmented eukaryote diversity was not strongly affected by habitat types at this time of the year.Sophie CharvetEunsoo KimAjit SubramaniamJoseph MontoyaSolange DuhamelNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sophie Charvet Eunsoo Kim Ajit Subramaniam Joseph Montoya Solange Duhamel Small pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge
description	Abstract Small pigmented eukaryotes (⩽ 5 µm) are an important, but overlooked component of global marine phytoplankton. The Amazon River plume delivers nutrients into the oligotrophic western tropical North Atlantic, shades the deeper waters, and drives the structure of microphytoplankton (> 20 µm) communities. For small pigmented eukaryotes, however, diversity and distribution in the region remain unknown, despite their significant contribution to open ocean primary production and other biogeochemical processes. To investigate how habitats created by the Amazon river plume shape small pigmented eukaryote communities, we used high-throughput sequencing of the 18S ribosomal RNA genes from up to five distinct small pigmented eukaryote cell populations, identified and sorted by flow cytometry. Small pigmented eukaryotes dominated small phytoplankton biomass across all habitat types, but the population abundances varied among stations resulting in a random distribution. Small pigmented eukaryote communities were consistently dominated by Chloropicophyceae (0.8–2 µm) and Bacillariophyceae (0.8–3.5 µm), accompanied by MOCH-5 at the surface or by Dinophyceae at the chlorophyll maximum. Taxonomic composition only displayed differences in the old plume core and at one of the plume margin stations. Such results reflect the dynamic interactions of the plume and offshore oceanic waters and suggest that the resident small pigmented eukaryote diversity was not strongly affected by habitat types at this time of the year.
format	article
author	Sophie Charvet Eunsoo Kim Ajit Subramaniam Joseph Montoya Solange Duhamel
author_facet	Sophie Charvet Eunsoo Kim Ajit Subramaniam Joseph Montoya Solange Duhamel
author_sort	Sophie Charvet
title	Small pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge
title_short	Small pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge
title_full	Small pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge
title_fullStr	Small pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge
title_full_unstemmed	Small pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge
title_sort	small pigmented eukaryote assemblages of the western tropical north atlantic around the amazon river plume during spring discharge
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/3c19ec4f97304cddae81b5bcd4b7e754
work_keys_str_mv	AT sophiecharvet smallpigmentedeukaryoteassemblagesofthewesterntropicalnorthatlanticaroundtheamazonriverplumeduringspringdischarge AT eunsookim smallpigmentedeukaryoteassemblagesofthewesterntropicalnorthatlanticaroundtheamazonriverplumeduringspringdischarge AT ajitsubramaniam smallpigmentedeukaryoteassemblagesofthewesterntropicalnorthatlanticaroundtheamazonriverplumeduringspringdischarge AT josephmontoya smallpigmentedeukaryoteassemblagesofthewesterntropicalnorthatlanticaroundtheamazonriverplumeduringspringdischarge AT solangeduhamel smallpigmentedeukaryoteassemblagesofthewesterntropicalnorthatlanticaroundtheamazonriverplumeduringspringdischarge
_version_	1718388308682211328

Small pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge

Ejemplares similares