Dataset Information

Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors.

ABSTRACT: 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.

SUBMITTER: Sow SLS

PROVIDER: S-EPMC9303206 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature

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Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors.

Sow Swan L S SLS Brown Mark V MV Clarke Laurence J LJ Bissett Andrew A van de Kamp Jodie J Trull Thomas W TW Raes Eric J EJ Seymour Justin R JR Bramucci Anna R AR Ostrowski Martin M Boyd Philip W PW Deagle Bruce E BE Pardo Paula C PC Sloyan Bernadette M BM Bodrossy Levente L

Environmental microbiology 20220216 5

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 communi ...[more]

PMID: 35049099

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Dataset Information

Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors.

Publications

Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors.

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