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Atmospheric deposition impact on bacterial community composition in the NW Mediterranean

dc.contributor.authorMarín Beltrán, Isabel
dc.contributor.authorLogue, Jürg B.
dc.contributor.authorAndersson, Anders F.
dc.contributor.authorPeters, Francesc
dc.date.accessioned2019-05-20T15:41:45Z
dc.date.available2019-05-20T15:41:45Z
dc.date.issued2019
dc.description.abstractAtmospheric deposition is a source of inorganic nutrients and organic matter to the ocean, and can favor the growth of some planktonic species over others according to their nutrient requirements. Atmospheric inputs from natural and anthropogenic sources are nowadays increasing due to desertification and industrialization, respectively. While the impact of mineral dust (mainly from the Saharan desert) on phytoplankton and bacterial community composition has been previously assessed, the effect of anthropogenic aerosols on marine bacterial assemblages remains poorly studied. Since marine bacteria play a range of roles in the biogeochemical cycles of inorganic nutrients and organic carbon, it is important to determine which taxa of marine bacteria may benefit from aerosol fertilization and which not. Here, we experimentally assessed the effect of Saharan dust and anthropogenic aerosols on marine bacterioplankton community composition across a spatial and temporal range of trophic conditions in the northwestern Mediterranean Sea. Results from 16S rDNA sequencing showed that bacterial diversity varied significantly with seasonality and geographical location. While atmospheric deposition did not yield significant changes in community composition when all the experiments where considered together, it did produce changes at certain places and during certain times of the year. These effects accounted for shifts in the bacterial community's relative abundance of up to 28%. The effect of aerosols was overall greatest in summer, both types of atmospheric particles stimulating the groups Alphaproteobacteria, Betaproteobacteria, and Cyanobacteria in the location with the highest anthropogenic footprint. Other bacterial groups benefited from one or the other aerosol depending on the season and location. Anthropogenic aerosols increased the relative abundance of groups belonging to the phylum Bacteriodetes (Cytophagia, Flavobacteriia, and Sphingobacteriia), while Saharan dust stimulated most the phytoplanktonic group of Cyanobacteria and, more specifically, Synechococcus.pt_PT
dc.description.sponsorshipFunding Agency / Grant Number Spanish Ministerio de Economia y Competitividad CTM2011-23458 CTM2015-65720-R FPI Spanish scholarship program BES-2012-052976 KTH Royal Institute of Technology in Stockholm EEB-I-15-09845 Swiss National Science Foundation (SNSF) PA00P3_145355 Spanish Ministerio de Agricultura, Alimentacion y Medio Ambientept_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.doihttps://doi.org/10.3389/fmicb.2019.00858pt_PT
dc.identifier.issn1664-302X
dc.identifier.urihttp://hdl.handle.net/10400.1/12528
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherFrontiers Mediapt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectAtmospheric depositionpt_PT
dc.subjectSaharan dustpt_PT
dc.subjectAnthropogenic aerosolspt_PT
dc.subjectBacterial community compositionpt_PT
dc.subject454-pyrosequenciationpt_PT
dc.subjectMediterranean Seapt_PT
dc.subjectDieta mediterrânicapt_PT
dc.titleAtmospheric deposition impact on bacterial community composition in the NW Mediterraneanpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.startPage858pt_PT
oaire.citation.titleFrontiers in Microbiologypt_PT
oaire.citation.volume10pt_PT
person.familyNameMarín Beltrán
person.givenNameIsabel
person.identifier.ciencia-idF113-4C9D-8C31
person.identifier.orcid0000-0002-8389-0859
person.identifier.scopus-author-id57191204111
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationf64eb2f0-0c91-45b1-af0f-7a849229bae4
relation.isAuthorOfPublication.latestForDiscoveryf64eb2f0-0c91-45b1-af0f-7a849229bae4

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