Surface Bacterioplankton Community Structure Crossing the Antarctic Circumpolar Current Fronts.

Autor:	Cordone A; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Selci M; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Barosa B; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Bastianoni A; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Bastoni D; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Bolinesi F; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Capuozzo R; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Cascone M; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Correggia M; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Corso D; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Di Iorio L; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Misic C; Dipartimento di Scienze della Terra, Dell'Ambiente e della Vita, Universitá di Genova, 16132 Genova, Italy., Montemagno F; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Ricciardelli A; Department of Biology, University of Naples Federico II, 80126 Naples, Italy., Saggiomo M; Stazione Zoologica Anton Dohrn, 80121 Naples, Italy., Tonietti L; Department of Biology, University of Naples Federico II, 80126 Naples, Italy.; Department of Science and Technology, University of Naples Parthenope, 80143 Naples, Italy., Mangoni O; Department of Biology, University of Naples Federico II, 80126 Naples, Italy.; Consorzio Nazionale Interuniversitario delle Scienze del Mare (CoNISMa), 00196 Rome, Italy., Giovannelli D; Department of Biology, University of Naples Federico II, 80126 Naples, Italy.; Institute of Marine Biological Resources and Biotechnologies, National Research Council, 60125 Ancona, Italy.; Earth-Life Science Institute, Tokyo Institute for Technology, Tokyo 152-8552, Japan.; Department of Marine and Coastal Science, Rutgers University, New Brunswick, NJ 08901, USA.; Marine Chemistry and Geology Department, Woods Hole Oceanographic Institution, Woods Hole, MA 02540, USA.
Jazyk:	angličtina
Zdroj:	Microorganisms [Microorganisms] 2023 Mar 09; Vol. 11 (3). Date of Electronic Publication: 2023 Mar 09.
DOI:	10.3390/microorganisms11030702
Abstrakt:	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.
Databáze:	MEDLINE
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