Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors
Summary We investigated the Southern Ocean (SO) prokaryote community structure via zero‐radius operational taxonomic unit (zOTU) libraries generated from 16S rRNA gene sequencing of 223 full water column profiles. Samples reveal the prokaryote diversity trend between discrete water masses across mul...
Published in: | Environmental Microbiology |
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Online Access: | http://dx.doi.org/10.1111/1462-2920.15906 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.15906 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.15906 |
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crwiley:10.1111/1462-2920.15906 2024-06-02T07:57:27+00:00 Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors Sow, Swan L. S. Brown, Mark V. Clarke, Laurence J. Bissett, Andrew van de Kamp, Jodie Trull, Thomas W. Raes, Eric J. Seymour, Justin R. Bramucci, Anna R. Ostrowski, Martin Boyd, Philip W. Deagle, Bruce E. Pardo, Paula C. Sloyan, Bernadette M. Bodrossy, Levente Department of the Environment, Australian Government 2022 http://dx.doi.org/10.1111/1462-2920.15906 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.15906 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.15906 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Environmental Microbiology volume 24, issue 5, page 2449-2466 ISSN 1462-2912 1462-2920 journal-article 2022 crwiley https://doi.org/10.1111/1462-2920.15906 2024-05-03T12:06:58Z Summary We investigated the Southern Ocean (SO) prokaryote community structure via zero‐radius operational taxonomic unit (zOTU) libraries generated from 16S rRNA gene sequencing of 223 full water column profiles. Samples reveal the prokaryote diversity trend between discrete water masses across multiple depths and latitudes in Indian (71–99°E, summer) and Pacific (170–174°W, autumn‐winter) sectors of the SO. At higher taxonomic levels (phylum‐family) we observed water masses to harbour distinct communities across both sectors, but observed sectorial variations at lower taxonomic levels (genus‐zOTU) and relative abundance shifts for key taxa such as Flavobacteria, SAR324/Marinimicrobia, Nitrosopumilus and Nitrosopelagicus at both epi‐ and bathy‐abyssopelagic water masses. Common surface bacteria were abundant in several deep‐water masses and vice‐versa suggesting connectivity between surface and deep‐water microbial assemblages. Bacteria from same‐sector Antarctic Bottom Water samples showed patchy, high beta‐diversity which did not correlate well with measured environmental parameters or geographical distance. Unconventional depth distribution patterns were observed for key archaeal groups: Crenarchaeota was found across all depths in the water column and persistent high relative abundances of common epipelagic archaeon Nitrosopelagicus was observed in deep‐water masses. Our findings reveal substantial regional variability of SO prokaryote assemblages that we argue should be considered in wide‐scale SO ecosystem microbial modelling. Article in Journal/Newspaper Antarc* Antarctic Southern Ocean Wiley Online Library Antarctic Indian Pacific Southern Ocean Environmental Microbiology |
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Open Polar |
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Wiley Online Library |
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crwiley |
language |
English |
description |
Summary We investigated the Southern Ocean (SO) prokaryote community structure via zero‐radius operational taxonomic unit (zOTU) libraries generated from 16S rRNA gene sequencing of 223 full water column profiles. Samples reveal the prokaryote diversity trend between discrete water masses across multiple depths and latitudes in Indian (71–99°E, summer) and Pacific (170–174°W, autumn‐winter) sectors of the SO. At higher taxonomic levels (phylum‐family) we observed water masses to harbour distinct communities across both sectors, but observed sectorial variations at lower taxonomic levels (genus‐zOTU) and relative abundance shifts for key taxa such as Flavobacteria, SAR324/Marinimicrobia, Nitrosopumilus and Nitrosopelagicus at both epi‐ and bathy‐abyssopelagic water masses. Common surface bacteria were abundant in several deep‐water masses and vice‐versa suggesting connectivity between surface and deep‐water microbial assemblages. Bacteria from same‐sector Antarctic Bottom Water samples showed patchy, high beta‐diversity which did not correlate well with measured environmental parameters or geographical distance. Unconventional depth distribution patterns were observed for key archaeal groups: Crenarchaeota was found across all depths in the water column and persistent high relative abundances of common epipelagic archaeon Nitrosopelagicus was observed in deep‐water masses. Our findings reveal substantial regional variability of SO prokaryote assemblages that we argue should be considered in wide‐scale SO ecosystem microbial modelling. |
author2 |
Department of the Environment, Australian Government |
format |
Article in Journal/Newspaper |
author |
Sow, Swan L. S. Brown, Mark V. Clarke, Laurence J. Bissett, Andrew van de Kamp, Jodie Trull, Thomas W. Raes, Eric J. Seymour, Justin R. Bramucci, Anna R. Ostrowski, Martin Boyd, Philip W. Deagle, Bruce E. Pardo, Paula C. Sloyan, Bernadette M. Bodrossy, Levente |
spellingShingle |
Sow, Swan L. S. Brown, Mark V. Clarke, Laurence J. Bissett, Andrew van de Kamp, Jodie Trull, Thomas W. Raes, Eric J. Seymour, Justin R. Bramucci, Anna R. Ostrowski, Martin Boyd, Philip W. Deagle, Bruce E. Pardo, Paula C. Sloyan, Bernadette M. Bodrossy, Levente Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors |
author_facet |
Sow, Swan L. S. Brown, Mark V. Clarke, Laurence J. Bissett, Andrew van de Kamp, Jodie Trull, Thomas W. Raes, Eric J. Seymour, Justin R. Bramucci, Anna R. Ostrowski, Martin Boyd, Philip W. Deagle, Bruce E. Pardo, Paula C. Sloyan, Bernadette M. Bodrossy, Levente |
author_sort |
Sow, Swan L. S. |
title |
Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors |
title_short |
Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors |
title_full |
Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors |
title_fullStr |
Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors |
title_full_unstemmed |
Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors |
title_sort |
biogeography of southern ocean prokaryotes: a comparison of the indian and pacific sectors |
publisher |
Wiley |
publishDate |
2022 |
url |
http://dx.doi.org/10.1111/1462-2920.15906 https://onlinelibrary.wiley.com/doi/pdf/10.1111/1462-2920.15906 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/1462-2920.15906 |
geographic |
Antarctic Indian Pacific Southern Ocean |
geographic_facet |
Antarctic Indian Pacific Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_source |
Environmental Microbiology volume 24, issue 5, page 2449-2466 ISSN 1462-2912 1462-2920 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1111/1462-2920.15906 |
container_title |
Environmental Microbiology |
_version_ |
1800740610594832384 |