Higher variability of bacterial communities across space than over time in Antarctic lakes, and contrasting assembly processes

21 pages, 5 figures, 1 table, supplemental material https://doi.org/10.1128/aem.01079-25.-- Data Availability: The FASTQ files of water and sediment bacterial communities were deposited in the Sequence Read Archive (SRA) database of the National Center for Biotechnology Information (NCBI) under the...

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Detalhes bibliográficos
Autores: Ahumada, Diego, Schwob, Guillaume, Osorio, Magdalena, Astorga, Maria Soledad, Lavergne, Céline, Olgun, Nazli, Thalasso, Frédéric, Poulin, Elie, Orlando, Julieta, Cabrol, Léa
Formato: artículo
Fecha de publicación:2025
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/410812
Acesso em linha:http://hdl.handle.net/10261/410812
Access Level:acceso abierto
Palavra-chave:http://metadata.un.org/sdg/14
Conserve and sustainably use the oceans, seas and marine resources for sustainable development
id ES_7c6f8174d77d6a376eb36badf85bc718
oai_identifier_str oai:digital.csic.es:10261/410812
network_acronym_str ES
network_name_str España
repository_id_str
dc.title.none.fl_str_mv Higher variability of bacterial communities across space than over time in Antarctic lakes, and contrasting assembly processes
title Higher variability of bacterial communities across space than over time in Antarctic lakes, and contrasting assembly processes
spellingShingle Higher variability of bacterial communities across space than over time in Antarctic lakes, and contrasting assembly processes
Ahumada, Diego
http://metadata.un.org/sdg/14
Conserve and sustainably use the oceans, seas and marine resources for sustainable development
title_short Higher variability of bacterial communities across space than over time in Antarctic lakes, and contrasting assembly processes
title_full Higher variability of bacterial communities across space than over time in Antarctic lakes, and contrasting assembly processes
title_fullStr Higher variability of bacterial communities across space than over time in Antarctic lakes, and contrasting assembly processes
title_full_unstemmed Higher variability of bacterial communities across space than over time in Antarctic lakes, and contrasting assembly processes
title_sort Higher variability of bacterial communities across space than over time in Antarctic lakes, and contrasting assembly processes
dc.creator.none.fl_str_mv Ahumada, Diego
Schwob, Guillaume
Osorio, Magdalena
Astorga, Maria Soledad
Lavergne, Céline
Olgun, Nazli
Thalasso, Frédéric
Poulin, Elie
Orlando, Julieta
Cabrol, Léa
author Ahumada, Diego
author_facet Ahumada, Diego
Schwob, Guillaume
Osorio, Magdalena
Astorga, Maria Soledad
Lavergne, Céline
Olgun, Nazli
Thalasso, Frédéric
Poulin, Elie
Orlando, Julieta
Cabrol, Léa
author_role author
author2 Schwob, Guillaume
Osorio, Magdalena
Astorga, Maria Soledad
Lavergne, Céline
Olgun, Nazli
Thalasso, Frédéric
Poulin, Elie
Orlando, Julieta
Cabrol, Léa
author2_role author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Agencia Estatal de Investigación (España)
Fondo Nacional de Desarrollo Científico y Tecnológico (Chile)
Instituto Antártico Chileno
Agencia Nacional de Investigación y Desarrollo (Chile)
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv http://metadata.un.org/sdg/14
Conserve and sustainably use the oceans, seas and marine resources for sustainable development
topic http://metadata.un.org/sdg/14
Conserve and sustainably use the oceans, seas and marine resources for sustainable development
description 21 pages, 5 figures, 1 table, supplemental material https://doi.org/10.1128/aem.01079-25.-- Data Availability: The FASTQ files of water and sediment bacterial communities were deposited in the Sequence Read Archive (SRA) database of the National Center for Biotechnology Information (NCBI) under the project number PRJNA1266680 with accession numbers ranging from SRX28894907 to SRX28895072 (see Table S2 for correspondence with sample nomenclature). The R codes used for ecological assembly process estimation in this study are publicly available on GitHub at https://github.com/DiegoAhumadaM/Ecological-Assembly-Processes-Estimation
publishDate 2025
dc.date.none.fl_str_mv 2025
2025
2025
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/410812
url http://hdl.handle.net/10261/410812
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv https://doi.org/10.1128/aem.01079-25
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Society for Microbiology
publisher.none.fl_str_mv American Society for Microbiology
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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spelling Higher variability of bacterial communities across space than over time in Antarctic lakes, and contrasting assembly processesAhumada, DiegoSchwob, GuillaumeOsorio, MagdalenaAstorga, Maria SoledadLavergne, CélineOlgun, NazliThalasso, FrédéricPoulin, ElieOrlando, JulietaCabrol, Léahttp://metadata.un.org/sdg/14Conserve and sustainably use the oceans, seas and marine resources for sustainable development21 pages, 5 figures, 1 table, supplemental material https://doi.org/10.1128/aem.01079-25.-- Data Availability: The FASTQ files of water and sediment bacterial communities were deposited in the Sequence Read Archive (SRA) database of the National Center for Biotechnology Information (NCBI) under the project number PRJNA1266680 with accession numbers ranging from SRX28894907 to SRX28895072 (see Table S2 for correspondence with sample nomenclature). The R codes used for ecological assembly process estimation in this study are publicly available on GitHub at https://github.com/DiegoAhumadaM/Ecological-Assembly-Processes-EstimationAs sentinels of environmental changes, Antarctic lakes are ideal systems for studying the temporal and spatial dynamics of microbial communities. However, the relative magnitude and underlying mechanisms driving these variations remain poorly understood. Studying the spatiotemporal variation of microbial communities is crucial to provide a robust baseline for predicting ecosystem responses to global changes. Here, we investigated the spatial and inter-annual variation of bacterial community structure and their underlying assembly processes across sediment and water habitats in 11 lakes on the Fildes Peninsula, Maritime Antarctica, sampled during austral summers from 2017 to 2023, using 16S rRNA gene sequencing. The communities primarily clustered by habitat, with higher diversity in sediment (characterized by Rhodoferax, Intraporangiaceae, and Vicinamibacterales) compared to water (characterized by Polaromonas, Flavovacterium, and Sporichthyaceae). Spatial turnover of communities dominated over inter-annual variation in both habitats. Accordingly, the temporal core microbiome showed greater stability than the spatial core. The conserved bacterial communities (core communities) over time and across space exhibited a strikingly similar taxonomic composition. Community assembly processes differed between habitats, with a stronger contribution of dispersal limitation in sediment, versus ecological drift in water, as expected from the differences in connectivity within each habitat. Spatial and temporal variations in sediment were driven by globally similar assembly processes. In contrast, in water communities, different assembly processes explained the spatial and temporal variation. These insights emphasize the need to consider both spatial and temporal scales and various habitat types when predicting future bacterial dynamics in Antarctic lakes in a changing environmentThis work was supported by the Regular FONDECYT project 1211672 (Chilean National Agency of Research and Innovation, ANID), Projects INACH RT09-12 and INACH RT14-15 from the Chilean National Antarctic Institute (INACH), and Millennium Science Initiative Program ICN2021_002 (Millennium Institute BASE). D.A. received national doctoral grant n°21210080 from ANID and supporting funds n°DG_10_23 for postgraduate studies in Antarctic thematic from INACH. Mobility between France and Chile was supported by ECOS-ANID grant C16B03This work contributes to the Institut de Ciències del Mar "Severo Ochoa Centre of Excellence" accreditation CEX2024-001494-S funded by AEI 10.13039/501100011033 of the Spanish Ministry of Science and InnovationPeer reviewedAmerican Society for MicrobiologyAgencia Estatal de Investigación (España)Fondo Nacional de Desarrollo Científico y Tecnológico (Chile)Instituto Antártico ChilenoAgencia Nacional de Investigación y Desarrollo (Chile)Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]202520252025info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/410812reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttps://doi.org/10.1128/aem.01079-25Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/4108122026-05-22T06:33:51Z
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