A Pagé

AL Reysenbach

AV Ariza

BJ Campbell

BJ Haas

C Pedrós-Alió

D Lundin

E Fraile-Nuez

E Singer

ET Baker

Eugenio Fraile-Nuez

F Baltar

F Eugenio

Fabiano Thompson

GE Flores

I Ferrera

Isabel Ferrera

J Arístegui

J Castresana

J Reeder

J Rivera

Javier Arístegui

JC Carracedo

JG Caporaso

JJ Wright

JM Gasol

JM Santana-Casiano

Josep M. Gasol

José M. González

KL Von Damm

KO Stetter

M Vila-Costa

María F. Montero

MK Tivey

N Alves Junior

O Sánchez

PD Schloss

Q Wang

R Massana

RC Edgar

S Elshahed

SE Dowd

T Pommier

V Kunin

PLoS ONE

English

PubMed

Crossref

Transient Changes in Bacterioplankton Communities Induced by the Submarine Volcanic Eruption of El Hierro (Canary Islands)

The submarine volcanic eruption occurring near El Hierro (Canary Islands) in October 2011 provided a unique opportunity to determine the effects of such events on the microbial populations of the surrounding waters. The birth of a new underwater volcano produced a large plume of vent material detectable from space that led to abrupt changes in the physical-chemical properties of the water column. We combined flow cytometry and 454-pyrosequencing of 16S rRNA gene amplicons (V1-V3 regions for Bacteria and V3-V5 for Archaea) to monitor the area around the volcano through the eruptive and post-eruptive phases (November 2011 to April 2012). Flow cytometric analyses revealed higher abundance and relative activity (expressed as a percentage of high-nucleic acid content cells) of heterotrophic prokaryotes during the eruptive process as compared to post-eruptive stages. Changes observed in populations detectable by flow cytometry were more evident at depths closer to the volcano (~70-200 m), coinciding also with oxygen depletion. Alpha-diversity analyses revealed that species richness (Chao1 index) decreased during the eruptive phase; however, no dramatic changes in community composition were observed. The most abundant taxa during the eruptive phase were similar to those in the post-eruptive stages and to those typically prevalent in oceanic bacterioplankton communities (i.e. the alphaproteobacterial SAR11 group, the Flavobacteriia class of the Bacteroidetes and certain groups of Gammaproteobacteria). Yet, although at low abundance, we also detected the presence of taxa not typically found in bacterioplankton communities such as the Epsilonproteobacteria and members of the candidate division ZB3, particularly during the eruptive stage. These groups are often associated with deep-sea hydrothermal vents or sulfur-rich springs. Both cytometric and sequence analyses showed that once the eruption ceased, evidences of the volcano-induced changes were no longer observed

José M González

María F Montero

Josep M Gasol

Directory of Open Access Journals

Transient changes in bacterioplankton communities induced by the submarine volcanic eruption of El Hierro (Canary Islands).

Ferrera, I. (Isabel)

Arístegui, J. (Javier)

González, J.M. (José M.)

Montero, M.F. (María Fernánda)

Fraile-Nuez, E. (Eugenio)

Gasol, J.M. (Josep María)

Repositorio Institucional Digital del IEO

16 pages, 7 figures, supporting information http://dx.doi.org/10.1371/journal.pone.0118136The submarine volcanic eruption occurring near El Hierro (Canary Islands) in October 2011 provided a unique opportunity to determine the effects of such events on the microbial populations of the surrounding waters. The birth of a new underwater volcano produced a large plume of vent material detectable from space that led to abrupt changes in the physical-chemical properties of the water column. We combined flow cytometry and 454-pyrosequencing of 16S rRNA gene amplicons (V1-V3 regions for Bacteria and V3-V5 for Archaea) to monitor the area around the volcano through the eruptive and post-eruptive phases (November 2011 to April 2012). Flow cytometric analyses revealed higher abundance and relative activity (expressed as a percentage of high-nucleic acid content cells) of heterotrophic prokaryotes during the eruptive process as compared to post-eruptive stages. Changes observed in populations detectable by flow cytometry were more evident at depths closer to the volcano (∼70-200 m), coinciding also with oxygen depletion. Alpha-diversity analyses revealed that species richness (Chao1 index) decreased during the eruptive phase; however, no dramatic changes in community composition were observed. The most abundant taxa during the eruptive phase were similar to those in the post-eruptive stages and to those typically prevalent in oceanic bacterioplankton communities (i.e. the alphaproteobacterial SAR11 group, the Flavobacteriia class of the Bacteroidetes and certain groups of Gammaproteobacteria). Yet, although at low abundance, we also detected the presence of taxa not typically found in bacterioplankton communities such as the Epsilonproteobacteria and members of the candidate division ZB3, particularly during the eruptive stage. These groups are often associated with deep-sea hydrothermal vents or sulfur-rich springs. Both cytometric and sequence analyses showed that once the eruption ceased, evidences of the volcano-induced changes were no longer observed. © 2015 Ferrera et al.This work was partly supported by projects VULCANO (CTM2012-36317) to E. Fraile-Nuez and J. Arístegui, MarineGems (CTM2010-20361) to J.M. González and STORM (CTM2009-09352/MAR) to J.M. Gasol and I. Ferrera, all funded by the suppressed Spanish Ministry of Science and Innovation. J.M. González received additional funding from the Ministry of Economy and Competitiveness (project EcoBGM, CTM2013-48292-C3-3-R)Peer Reviewe

Ferrera, Isabel

Arístegui, Javier

González, José M.

Montero, María F.

Fraile-Nuez, Eugenio

Gasol, Josep M.

Digital.CSIC

<div><p>The submarine volcanic eruption occurring near El Hierro (Canary Islands) in October 2011 provided a unique opportunity to determine the effects of such events on the microbial populations of the surrounding waters. The birth of a new underwater volcano produced a large plume of vent material detectable from space that led to abrupt changes in the physical-chemical properties of the water column. We combined flow cytometry and 454-pyrosequencing of 16S rRNA gene amplicons (V1–V3 regions for Bacteria and V3–V5 for Archaea) to monitor the area around the volcano through the eruptive and post-eruptive phases (November 2011 to April 2012). Flow cytometric analyses revealed higher abundance and relative activity (expressed as a percentage of high-nucleic acid content cells) of heterotrophic prokaryotes during the eruptive process as compared to post-eruptive stages. Changes observed in populations detectable by flow cytometry were more evident at depths closer to the volcano (~70–200 m), coinciding also with oxygen depletion. Alpha-diversity analyses revealed that species richness (Chao1 index) decreased during the eruptive phase; however, no dramatic changes in community composition were observed. The most abundant taxa during the eruptive phase were similar to those in the post-eruptive stages and to those typically prevalent in oceanic bacterioplankton communities (i.e. the alphaproteobacterial SAR11 group, the Flavobacteriia class of the Bacteroidetes and certain groups of Gammaproteobacteria). Yet, although at low abundance, we also detected the presence of taxa not typically found in bacterioplankton communities such as the Epsilonproteobacteria and members of the candidate division ZB3, particularly during the eruptive stage. These groups are often associated with deep-sea hydrothermal vents or sulfur-rich springs. Both cytometric and sequence analyses showed that once the eruption ceased, evidences of the volcano-induced changes were no longer observed.</p></div

Isabel Ferrera (691613)

Javier Arístegui (187385)

José M. González (249835)

María F. Montero (691614)

Eugenio Fraile-Nuez (602009)

Josep M. Gasol (244774)

The Francis Crick Institute

http://www.repositorio.ieo.es/e-ieo/bitstream/10508/9398/1/Ferrera_plosone_2015.pdf

Transient Changes in Bacterioplankton Communities Induced by the Submarine Volcanic Eruption of El Hierro (Canary Islands)

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Directory of Open Access Journals

Repositorio Institucional Digital del IEO

Digital.CSIC

The Francis Crick Institute