Summer phyto- and bacterioplankton communities during low and high productivity scenarios in the Western Antarctic Peninsula
Abstract Phytoplankton blooms taking place during the warm season drive high productivity in Antarctic coastal seawaters. Important temporal and spatial variations exist in productivity patterns, indicating local constraints influencing the phototrophic community. Surface water in Chile Bay (Greenwi...
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ftmit:oai:dspace.mit.edu:1721.1/131555 2023-10-09T21:46:52+02:00 Summer phyto- and bacterioplankton communities during low and high productivity scenarios in the Western Antarctic Peninsula Fuentes, Sebastián Arroyo, José I Rodríguez-Marconi, Susana Masotti, Italo Alarcón-Schumacher, Tomás Polz, Martin F Trefault, Nicole De la Iglesia, Rodrigo Díez, Beatriz Massachusetts Institute of Technology. Department of Civil and Environmental Engineering 2020-09-24T20:55:01Z application/pdf https://hdl.handle.net/1721.1/131555 en eng Springer Berlin Heidelberg https://doi.org/10.1007/s00300-018-2411-5 https://hdl.handle.net/1721.1/131555 Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Springer-Verlag GmbH Germany, part of Springer Nature Springer Berlin Heidelberg Article http://purl.org/eprint/type/JournalArticle 2020 ftmit https://doi.org/10.1007/s00300-018-2411-5 2023-09-11T18:04:23Z Abstract Phytoplankton blooms taking place during the warm season drive high productivity in Antarctic coastal seawaters. Important temporal and spatial variations exist in productivity patterns, indicating local constraints influencing the phototrophic community. Surface water in Chile Bay (Greenwich Island, South Shetlands) is influenced by freshwater from the melting of sea ice and surrounding glaciers; however, it is not a widely studied system. The phyto- and bacterioplankton communities in Chile Bay were studied over two consecutive summers; during a low productivity period (chlorophyll a < 0.05 mg m−3) and an ascendant phototrophic bloom (chlorophyll a up to 2.38 mg m−3). Microbial communities were analyzed by 16S rRNA—including plastidial—gene sequencing. Diatoms (mainly Thalassiosirales) were the most abundant phytoplankton, particularly during the ascendant bloom. Bacterioplankton in the low productivity period was less diverse and dominated by a few operational taxonomic units (OTUs), related to Colwellia and Pseudoalteromonas. Alpha diversity was higher during the bloom, where several Bacteroidetes taxa absent in the low productivity period were present. Network analysis indicated that phytoplankton relative abundance was correlated with bacterioplankton phylogenetic diversity and the abundance of several bacterial taxa. Hubs—the most connected OTUs in the network—were not the most abundant OTUs and included some poorly described taxa in Antarctica, such as Neptunomonas and Ekhidna. In summary, the results of this study indicate that in Antarctic Peninsula coastal waters, such as Chile Bay, higher bacterioplankton community diversity occurs during a phototrophic bloom. This is likely a result of primary production, providing a source of fresh organic matter to bacterioplankton. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Greenwich Island Sea ice DSpace@MIT (Massachusetts Institute of Technology) Antarctic Antarctic Peninsula Greenwich Greenwich Island ENVELOPE(-59.783,-59.783,-62.517,-62.517) Polar Biology 42 1 159 169 |
institution |
Open Polar |
collection |
DSpace@MIT (Massachusetts Institute of Technology) |
op_collection_id |
ftmit |
language |
English |
description |
Abstract Phytoplankton blooms taking place during the warm season drive high productivity in Antarctic coastal seawaters. Important temporal and spatial variations exist in productivity patterns, indicating local constraints influencing the phototrophic community. Surface water in Chile Bay (Greenwich Island, South Shetlands) is influenced by freshwater from the melting of sea ice and surrounding glaciers; however, it is not a widely studied system. The phyto- and bacterioplankton communities in Chile Bay were studied over two consecutive summers; during a low productivity period (chlorophyll a < 0.05 mg m−3) and an ascendant phototrophic bloom (chlorophyll a up to 2.38 mg m−3). Microbial communities were analyzed by 16S rRNA—including plastidial—gene sequencing. Diatoms (mainly Thalassiosirales) were the most abundant phytoplankton, particularly during the ascendant bloom. Bacterioplankton in the low productivity period was less diverse and dominated by a few operational taxonomic units (OTUs), related to Colwellia and Pseudoalteromonas. Alpha diversity was higher during the bloom, where several Bacteroidetes taxa absent in the low productivity period were present. Network analysis indicated that phytoplankton relative abundance was correlated with bacterioplankton phylogenetic diversity and the abundance of several bacterial taxa. Hubs—the most connected OTUs in the network—were not the most abundant OTUs and included some poorly described taxa in Antarctica, such as Neptunomonas and Ekhidna. In summary, the results of this study indicate that in Antarctic Peninsula coastal waters, such as Chile Bay, higher bacterioplankton community diversity occurs during a phototrophic bloom. This is likely a result of primary production, providing a source of fresh organic matter to bacterioplankton. |
author2 |
Massachusetts Institute of Technology. Department of Civil and Environmental Engineering |
format |
Article in Journal/Newspaper |
author |
Fuentes, Sebastián Arroyo, José I Rodríguez-Marconi, Susana Masotti, Italo Alarcón-Schumacher, Tomás Polz, Martin F Trefault, Nicole De la Iglesia, Rodrigo Díez, Beatriz |
spellingShingle |
Fuentes, Sebastián Arroyo, José I Rodríguez-Marconi, Susana Masotti, Italo Alarcón-Schumacher, Tomás Polz, Martin F Trefault, Nicole De la Iglesia, Rodrigo Díez, Beatriz Summer phyto- and bacterioplankton communities during low and high productivity scenarios in the Western Antarctic Peninsula |
author_facet |
Fuentes, Sebastián Arroyo, José I Rodríguez-Marconi, Susana Masotti, Italo Alarcón-Schumacher, Tomás Polz, Martin F Trefault, Nicole De la Iglesia, Rodrigo Díez, Beatriz |
author_sort |
Fuentes, Sebastián |
title |
Summer phyto- and bacterioplankton communities during low and high productivity scenarios in the Western Antarctic Peninsula |
title_short |
Summer phyto- and bacterioplankton communities during low and high productivity scenarios in the Western Antarctic Peninsula |
title_full |
Summer phyto- and bacterioplankton communities during low and high productivity scenarios in the Western Antarctic Peninsula |
title_fullStr |
Summer phyto- and bacterioplankton communities during low and high productivity scenarios in the Western Antarctic Peninsula |
title_full_unstemmed |
Summer phyto- and bacterioplankton communities during low and high productivity scenarios in the Western Antarctic Peninsula |
title_sort |
summer phyto- and bacterioplankton communities during low and high productivity scenarios in the western antarctic peninsula |
publisher |
Springer Berlin Heidelberg |
publishDate |
2020 |
url |
https://hdl.handle.net/1721.1/131555 |
long_lat |
ENVELOPE(-59.783,-59.783,-62.517,-62.517) |
geographic |
Antarctic Antarctic Peninsula Greenwich Greenwich Island |
geographic_facet |
Antarctic Antarctic Peninsula Greenwich Greenwich Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Greenwich Island Sea ice |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Greenwich Island Sea ice |
op_source |
Springer Berlin Heidelberg |
op_relation |
https://doi.org/10.1007/s00300-018-2411-5 https://hdl.handle.net/1721.1/131555 |
op_rights |
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. Springer-Verlag GmbH Germany, part of Springer Nature |
op_doi |
https://doi.org/10.1007/s00300-018-2411-5 |
container_title |
Polar Biology |
container_volume |
42 |
container_issue |
1 |
container_start_page |
159 |
op_container_end_page |
169 |
_version_ |
1779309432449007616 |