Data_Sheet_1_Biogeography of Southern Ocean Active Prokaryotic Communities Over a Large Spatial Scale.docx

The activity of marine microorganisms depends on community composition, yet, in some oceans, less is known about the environmental and ecological processes that structure their distribution. The objective of this study was to test the effect of geographical distance and environmental parameters on p...

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Bibliographic Details
Main Authors: Claudia Maturana-Martínez, José Luis Iriarte, Sun-Yong Ha, Boyeon Lee, In-Young Ahn, Maria Vernet, Mattias Cape, Camila Fernández, Humberto E. González, Pierre E. Galand
Format: Dataset
Language:unknown
Published: 2022
Subjects:
Microbiology
Microbial Genetics
Microbial Ecology
Mycology
DNA
RNA
Southern Ocean
fjord
biogeography
Antarctic
The Antarctic
Antarc*
Online Access:https://doi.org/10.3389/fmicb.2022.862812.s001
https://figshare.com/articles/dataset/Data_Sheet_1_Biogeography_of_Southern_Ocean_Active_Prokaryotic_Communities_Over_a_Large_Spatial_Scale_docx/19696915
Description
Summary:The activity of marine microorganisms depends on community composition, yet, in some oceans, less is known about the environmental and ecological processes that structure their distribution. The objective of this study was to test the effect of geographical distance and environmental parameters on prokaryotic community structure in the Southern Ocean (SO). We described the total (16S rRNA gene) and the active fraction (16S rRNA-based) of surface microbial communities over a ~6,500 km longitudinal transect in the SO. We found that the community composition of the total fraction was different from the active fraction across the zones investigated. In addition, higher α-diversity and stronger species turnover were displayed in the active community compared to the total community. Oceanospirillales, Alteromonadales, Rhodobacterales, and Flavobacteriales dominated the composition of the bacterioplankton communities; however, there were marked differences at the order level. Temperature, salinity, silicic acid, particulate organic nitrogen, and particulate organic carbon correlated with the composition of bacterioplankton communities. A strong distance–decay pattern between closer and distant communities was observed. We hypothesize that it was related to the different oceanic fronts present in the Antarctic Circumpolar Current. Our findings contribute to a better understanding of the complex arrangement that shapes the structure of bacterioplankton communities in the SO.

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