Surface bacterioplankton community structure crossing the Antarctic Circumpolar Current Fronts
Surface bacterioplankton community structure crossing the Antarctic Circumpolar Current Fronts
Date
2023-03-09
Authors
Cordone, Angelina
Selci, Matteo
Barosa, Bernardo
Bastianoni, Alessia
Bastoni, Deborah
Bolinesi, Francesco
Capuozzo, Rosaria
Cascone, Martina
Correggia, Monica
Corso, Davide
Di Iorio, Luciano
Misic, Cristina
Montemagno, Francesco
Ricciardelli, Annarita
Saggiomo, Maria
Tonietti, Luca
Mangoni, Olga
Giovannelli, Donato
Selci, Matteo
Barosa, Bernardo
Bastianoni, Alessia
Bastoni, Deborah
Bolinesi, Francesco
Capuozzo, Rosaria
Cascone, Martina
Correggia, Monica
Corso, Davide
Di Iorio, Luciano
Misic, Cristina
Montemagno, Francesco
Ricciardelli, Annarita
Saggiomo, Maria
Tonietti, Luca
Mangoni, Olga
Giovannelli, Donato
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DOI
10.3390/microorganisms11030702
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Keywords
Bacterioplankton diversity
Southern Ocean
16S rRNA sequencing
Primary productivity
Southern Ocean
16S rRNA sequencing
Primary productivity
Abstract
The Antarctic Circumpolar Current (ACC) is the major current in the Southern Ocean, isolating the warm stratified subtropical waters from the more homogeneous cold polar waters. The ACC flows from west to east around Antarctica and generates an overturning circulation by fostering deep-cold water upwelling and the formation of new water masses, thus affecting the Earth's heat balance and the global distribution of carbon. The ACC is characterized by several water mass boundaries or fronts, known as the Subtropical Front (STF), Subantarctic Front (SAF), Polar Front (PF), and South Antarctic Circumpolar Current Front (SACCF), identified by typical physical and chemical properties. While the physical characteristics of these fronts have been characterized, there is still poor information regarding the microbial diversity of this area. Here we present the surface water bacterioplankton community structure based on 16S rRNA sequencing from 13 stations sampled in 2017 between New Zealand to the Ross Sea crossing the ACC Fronts. Our results show a distinct succession in the dominant bacterial phylotypes present in the different water masses and suggest a strong role of sea surface temperatures and the availability of Carbon and Nitrogen in controlling community composition. This work represents an important baseline for future studies on the response of Southern Ocean epipelagic microbial communities to climate change.
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© The Author(s), 2023. This article is distributed under the terms of the Creative Commons Attribution License. The definitive version was published in Cordone, A., Selci, M., Barosa, B., Bastianoni, A., Bastoni, D., Bolinesi, F., Capuozzo, R., Cascone, M., Correggia, M., Corso, D., Di Iorio, L., Misic, C., Montemagno, F., Ricciardelli, A., Saggiomo, M., Tonietti, L., Mangoni, O., & Giovannelli, D. Surface bacterioplankton Community Structure Crossing the Antarctic Circumpolar Current Fronts. Microorganisms, 11(3), (2023): 702, https://doi.org/10.3390/microorganisms11030702.
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Cordone, A., Selci, M., Barosa, B., Bastianoni, A., Bastoni, D., Bolinesi, F., Capuozzo, R., Cascone, M., Correggia, M., Corso, D., Di Iorio, L., Misic, C., Montemagno, F., Ricciardelli, A., Saggiomo, M., Tonietti, L., Mangoni, O., & Giovannelli, D. (2023). Surface bacterioplankton Community Structure Crossing the Antarctic Circumpolar Current Fronts. Microorganisms, 11(3), 702.