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...
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ftdoajarticles:oai:doaj.org/article:3c19ec4f97304cddae81b5bcd4b7e754 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 Sophie Charvet Eunsoo Kim Ajit Subramaniam Joseph Montoya Solange Duhamel 2021-08-01T00:00:00Z https://doi.org/10.1038/s41598-021-95676-2 https://doaj.org/article/3c19ec4f97304cddae81b5bcd4b7e754 EN eng Nature Portfolio https://doi.org/10.1038/s41598-021-95676-2 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-021-95676-2 2045-2322 https://doaj.org/article/3c19ec4f97304cddae81b5bcd4b7e754 Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021) Medicine R Science Q article 2021 ftdoajarticles https://doi.org/10.1038/s41598-021-95676-2 2022-12-31T07:10:01Z 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. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Scientific Reports 11 1 |
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English |
topic |
Medicine R Science Q |
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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 |
topic_facet |
Medicine R Science Q |
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 in Journal/Newspaper |
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://doi.org/10.1038/s41598-021-95676-2 https://doaj.org/article/3c19ec4f97304cddae81b5bcd4b7e754 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Scientific Reports, Vol 11, Iss 1, Pp 1-14 (2021) |
op_relation |
https://doi.org/10.1038/s41598-021-95676-2 https://doaj.org/toc/2045-2322 doi:10.1038/s41598-021-95676-2 2045-2322 https://doaj.org/article/3c19ec4f97304cddae81b5bcd4b7e754 |
op_doi |
https://doi.org/10.1038/s41598-021-95676-2 |
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Scientific Reports |
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11 |
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1 |
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1766127935873351680 |