Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site

Autores
Lopez Alforja, Xabier; Sà, Elisabet L.; Quiroga, María Victoria; Pernice, Massimo C.; Cardelús, Clara; Balagué, Vanessa; Gasol, Josep M.; Coutinho, Felipe H.; Massana, Ramon; Vaqué, Dolors
Año de publicación
2025
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Viruses play key roles in controlling microbial abundance and community composition, nutrient cycling, and productivity in marine systems. Rising ocean temperatures, alongside increasing oligotrophy, are expected to alter the availability of inorganic nutrients and oxygen—key environmental factors that shape microbial community structure and virus-host interactions. While many studies have investigated viral abundances and community structure across spatial gradients, less is known about their long-term temporal variations, which is particularly relevant in the current context of global change. To address this gap, we analyzed two decades of surface water data from the Blanes Bay Microbial Observatory, located at the North Western Mediterranean, to describe how biotic and abiotic variables influence temporal dynamics of viral abundances and community composition. Statistical tools for time series, including GAMMs, anomaly analysis, and neural networks allowed us to demonstrate that viral abundance follow strong seasonality and a clear decrease starting midway (ca. 2011) through the sampled period (2005-2022). Fingerprint analysis evidenced that viral community composition was significantly influenced by seasonality and some environmental and biotic, with strong differences in viral communities between summer and winter months. Our analyses revealed that over the last 18 years, the abundance of most microbial groups, including viruses and their potential hosts, have declined, coinciding with an increase in seawater temperature and transparency, as well as a notable decrease in nutrient concentrations and phytoplankton biomass. We identified the ongoing shift towards more oligotrophic conditions as a potential driver of the observed decline in viral abundance, particularly in the last decade.
Fil: Lopez Alforja, Xabier. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Sà, Elisabet L.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Quiroga, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús). Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús); Argentina
Fil: Pernice, Massimo C.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Cardelús, Clara. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Balagué, Vanessa. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Gasol, Josep M.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Coutinho, Felipe H.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Massana, Ramon. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Vaqué, Dolors. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Materia
MARINE VIRUSES
MARINE MICROBIAL ECOLOGY
TIME SERIES
CLIMATE CHANGE
MACHINE LEARNING
GENERALIZED ADDITIVE MIZED MODELS (GAMM)
COASTAL WATERS
NW MEDITERRANEAN
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/280625
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/280625
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal siteLopez Alforja, XabierSà, Elisabet L.Quiroga, María VictoriaPernice, Massimo C.Cardelús, ClaraBalagué, VanessaGasol, Josep M.Coutinho, Felipe H.Massana, RamonVaqué, DolorsMARINE VIRUSESMARINE MICROBIAL ECOLOGYTIME SERIESCLIMATE CHANGEMACHINE LEARNINGGENERALIZED ADDITIVE MIZED MODELS (GAMM)COASTAL WATERSNW MEDITERRANEANhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Viruses play key roles in controlling microbial abundance and community composition, nutrient cycling, and productivity in marine systems. Rising ocean temperatures, alongside increasing oligotrophy, are expected to alter the availability of inorganic nutrients and oxygen—key environmental factors that shape microbial community structure and virus-host interactions. While many studies have investigated viral abundances and community structure across spatial gradients, less is known about their long-term temporal variations, which is particularly relevant in the current context of global change. To address this gap, we analyzed two decades of surface water data from the Blanes Bay Microbial Observatory, located at the North Western Mediterranean, to describe how biotic and abiotic variables influence temporal dynamics of viral abundances and community composition. Statistical tools for time series, including GAMMs, anomaly analysis, and neural networks allowed us to demonstrate that viral abundance follow strong seasonality and a clear decrease starting midway (ca. 2011) through the sampled period (2005-2022). Fingerprint analysis evidenced that viral community composition was significantly influenced by seasonality and some environmental and biotic, with strong differences in viral communities between summer and winter months. Our analyses revealed that over the last 18 years, the abundance of most microbial groups, including viruses and their potential hosts, have declined, coinciding with an increase in seawater temperature and transparency, as well as a notable decrease in nutrient concentrations and phytoplankton biomass. We identified the ongoing shift towards more oligotrophic conditions as a potential driver of the observed decline in viral abundance, particularly in the last decade.Fil: Lopez Alforja, Xabier. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; EspañaFil: Sà, Elisabet L.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; EspañaFil: Quiroga, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús). Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús); ArgentinaFil: Pernice, Massimo C.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; EspañaFil: Cardelús, Clara. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; EspañaFil: Balagué, Vanessa. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; EspañaFil: Gasol, Josep M.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; EspañaFil: Coutinho, Felipe H.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; EspañaFil: Massana, Ramon. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; EspañaFil: Vaqué, Dolors. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; EspañaOxford University Press2025-08info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/280625Lopez Alforja, Xabier; Sà, Elisabet L.; Quiroga, María Victoria; Pernice, Massimo C.; Cardelús, Clara; et al.; Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site; Oxford University Press; ISME Communications; 5; 1; 8-2025; 1-122730-6151CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/ismecommun/advance-article/doi/10.1093/ismeco/ycaf150/8243900info:eu-repo/semantics/altIdentifier/doi/10.1093/ismeco/ycaf150info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2026-02-06T12:21:55Zoai:ri.conicet.gov.ar:11336/280625instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982026-02-06 12:21:55.623CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site
title Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site
spellingShingle Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site
Lopez Alforja, Xabier
MARINE VIRUSES
MARINE MICROBIAL ECOLOGY
TIME SERIES
CLIMATE CHANGE
MACHINE LEARNING
GENERALIZED ADDITIVE MIZED MODELS (GAMM)
COASTAL WATERS
NW MEDITERRANEAN
title_short Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site
title_full Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site
title_fullStr Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site
title_full_unstemmed Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site
title_sort Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site
dc.creator.none.fl_str_mv Lopez Alforja, Xabier
Sà, Elisabet L.
Quiroga, María Victoria
Pernice, Massimo C.
Cardelús, Clara
Balagué, Vanessa
Gasol, Josep M.
Coutinho, Felipe H.
Massana, Ramon
Vaqué, Dolors
author Lopez Alforja, Xabier
author_facet Lopez Alforja, Xabier
Sà, Elisabet L.
Quiroga, María Victoria
Pernice, Massimo C.
Cardelús, Clara
Balagué, Vanessa
Gasol, Josep M.
Coutinho, Felipe H.
Massana, Ramon
Vaqué, Dolors
author_role author
author2 Sà, Elisabet L.
Quiroga, María Victoria
Pernice, Massimo C.
Cardelús, Clara
Balagué, Vanessa
Gasol, Josep M.
Coutinho, Felipe H.
Massana, Ramon
Vaqué, Dolors
author2_role author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv MARINE VIRUSES
MARINE MICROBIAL ECOLOGY
TIME SERIES
CLIMATE CHANGE
MACHINE LEARNING
GENERALIZED ADDITIVE MIZED MODELS (GAMM)
COASTAL WATERS
NW MEDITERRANEAN
topic MARINE VIRUSES
MARINE MICROBIAL ECOLOGY
TIME SERIES
CLIMATE CHANGE
MACHINE LEARNING
GENERALIZED ADDITIVE MIZED MODELS (GAMM)
COASTAL WATERS
NW MEDITERRANEAN
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Viruses play key roles in controlling microbial abundance and community composition, nutrient cycling, and productivity in marine systems. Rising ocean temperatures, alongside increasing oligotrophy, are expected to alter the availability of inorganic nutrients and oxygen—key environmental factors that shape microbial community structure and virus-host interactions. While many studies have investigated viral abundances and community structure across spatial gradients, less is known about their long-term temporal variations, which is particularly relevant in the current context of global change. To address this gap, we analyzed two decades of surface water data from the Blanes Bay Microbial Observatory, located at the North Western Mediterranean, to describe how biotic and abiotic variables influence temporal dynamics of viral abundances and community composition. Statistical tools for time series, including GAMMs, anomaly analysis, and neural networks allowed us to demonstrate that viral abundance follow strong seasonality and a clear decrease starting midway (ca. 2011) through the sampled period (2005-2022). Fingerprint analysis evidenced that viral community composition was significantly influenced by seasonality and some environmental and biotic, with strong differences in viral communities between summer and winter months. Our analyses revealed that over the last 18 years, the abundance of most microbial groups, including viruses and their potential hosts, have declined, coinciding with an increase in seawater temperature and transparency, as well as a notable decrease in nutrient concentrations and phytoplankton biomass. We identified the ongoing shift towards more oligotrophic conditions as a potential driver of the observed decline in viral abundance, particularly in the last decade.
Fil: Lopez Alforja, Xabier. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Sà, Elisabet L.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Quiroga, María Victoria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús). Universidad Nacional de San Martín. Instituto de Investigaciones Biotecnológicas. Instituto de Investigaciones Biotecnológicas "Dr. Raúl Alfonsín" (sede Chascomús); Argentina
Fil: Pernice, Massimo C.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Cardelús, Clara. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Balagué, Vanessa. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Gasol, Josep M.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Coutinho, Felipe H.. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Massana, Ramon. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
Fil: Vaqué, Dolors. Consejo Superior de Investigaciones Científicas. Instituto de Ciencias del Mar; España
description Viruses play key roles in controlling microbial abundance and community composition, nutrient cycling, and productivity in marine systems. Rising ocean temperatures, alongside increasing oligotrophy, are expected to alter the availability of inorganic nutrients and oxygen—key environmental factors that shape microbial community structure and virus-host interactions. While many studies have investigated viral abundances and community structure across spatial gradients, less is known about their long-term temporal variations, which is particularly relevant in the current context of global change. To address this gap, we analyzed two decades of surface water data from the Blanes Bay Microbial Observatory, located at the North Western Mediterranean, to describe how biotic and abiotic variables influence temporal dynamics of viral abundances and community composition. Statistical tools for time series, including GAMMs, anomaly analysis, and neural networks allowed us to demonstrate that viral abundance follow strong seasonality and a clear decrease starting midway (ca. 2011) through the sampled period (2005-2022). Fingerprint analysis evidenced that viral community composition was significantly influenced by seasonality and some environmental and biotic, with strong differences in viral communities between summer and winter months. Our analyses revealed that over the last 18 years, the abundance of most microbial groups, including viruses and their potential hosts, have declined, coinciding with an increase in seawater temperature and transparency, as well as a notable decrease in nutrient concentrations and phytoplankton biomass. We identified the ongoing shift towards more oligotrophic conditions as a potential driver of the observed decline in viral abundance, particularly in the last decade.
publishDate 2025
dc.date.none.fl_str_mv 2025-08
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/280625
Lopez Alforja, Xabier; Sà, Elisabet L.; Quiroga, María Victoria; Pernice, Massimo C.; Cardelús, Clara; et al.; Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site; Oxford University Press; ISME Communications; 5; 1; 8-2025; 1-12
2730-6151
CONICET Digital
CONICET
url http://hdl.handle.net/11336/280625
identifier_str_mv Lopez Alforja, Xabier; Sà, Elisabet L.; Quiroga, María Victoria; Pernice, Massimo C.; Cardelús, Clara; et al.; Long-term decline of marine viruses associated with warming and oligotrophication at a NW Mediterranean coastal site; Oxford University Press; ISME Communications; 5; 1; 8-2025; 1-12
2730-6151
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/ismecommun/advance-article/doi/10.1093/ismeco/ycaf150/8243900
info:eu-repo/semantics/altIdentifier/doi/10.1093/ismeco/ycaf150
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Oxford University Press
publisher.none.fl_str_mv Oxford University Press
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.11174

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