ArticleEnvironmental microbiology2022
Biogeography of Southern Ocean prokaryotes: a comparison of the Indian and Pacific sectors.
Article in Environmental microbiology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 20 citations in OpenAlex.
- Deep-sea Microbial Dataset of the Antarctic Ocean (dsMDAO): A high-resolution deep-sea microbial dataset of the Antarctic Ocean reveals potential for taxonomic and functional diversity.Microbial genomics · 2026Article
- Microbial fingerprinting of marine water masses in an Antarctic and hydrographically complex area.BMC biology · 2026Article
- Ecological diversity and metabolic strategies of widespread Marinisomatota in global oceans.Marine life science & technology · 2025Article
- Characterizing organisms from three domains of life with universal primers from throughout the global ocean.Scientific data · 2025Article
- Habitat specificity modulates the bacterial biogeographic patterns in the Southern Ocean.FEMS microbiology ecology · 2024Article
- Seasonal dynamics and diversity of Antarctic marine viruses reveal a novel viral seascape.Nature communications · 2024Article
- Unveiling the microbial diversity across the northern Ninety East Ridge in the Indian Ocean.Frontiers in microbiology · 2024Article
- Picoplankton diversity in an oligotrophic and high salinity environment in the central Adriatic Sea.Scientific reports · 2023Article
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Authors and funding
15 authors at 4 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
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.
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