Small pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge
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) commun...
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ftpubmed:oai:pubmedcentral.nih.gov:8355221 2023-05-15T17:30:50+02:00 Small pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge Charvet, Sophie Kim, Eunsoo Subramaniam, Ajit Montoya, Joseph Duhamel, Solange 2021-08-10 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8355221/ https://doi.org/10.1038/s41598-021-95676-2 en eng Nature Publishing Group UK http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8355221/ http://dx.doi.org/10.1038/s41598-021-95676-2 © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . CC-BY Sci Rep Article Text 2021 ftpubmed https://doi.org/10.1038/s41598-021-95676-2 2021-08-15T00:49:59Z 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. Text North Atlantic PubMed Central (PMC) Scientific Reports 11 1 |
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Article Charvet, Sophie Kim, Eunsoo Subramaniam, Ajit Montoya, Joseph Duhamel, Solange Small pigmented eukaryote assemblages of the western tropical North Atlantic around the Amazon River plume during spring discharge |
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Article |
description |
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 |
Text |
author |
Charvet, Sophie Kim, Eunsoo Subramaniam, Ajit Montoya, Joseph Duhamel, Solange |
author_facet |
Charvet, Sophie Kim, Eunsoo Subramaniam, Ajit Montoya, Joseph Duhamel, Solange |
author_sort |
Charvet, Sophie |
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 Publishing Group UK |
publishDate |
2021 |
url |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8355221/ https://doi.org/10.1038/s41598-021-95676-2 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Sci Rep |
op_relation |
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8355221/ http://dx.doi.org/10.1038/s41598-021-95676-2 |
op_rights |
© The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
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CC-BY |
op_doi |
https://doi.org/10.1038/s41598-021-95676-2 |
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