Shifts in microbial community structure and function in light- and dark-grown biofilms driven by warming
dc.contributor.author
dc.date.accessioned
2015-11-18T10:25:13Z
dc.date.available
2015-11-18T10:25:13Z
dc.date.issued
2014
dc.identifier.issn
1462-2912
dc.identifier.uri
dc.description.abstract
Biofilms are dynamic players in biogeochemical cycling in running waters and are subjected to environmental stressors like those provoked by climate change. We investigated whether a 2 degrees C increase in flowing water would affect prokaryotic community composition and heterotrophic metabolic activities of biofilms grown under light or dark conditions. Neither light nor temperature treatments were relevant for selecting a specific bacterial community at initial phases (7-day-old biofilms), but both variables affected the composition and function of mature biofilms (28-day-old). In dark-grown biofilms, changes in the prokaryotic community composition due to warming were mainly related to rotifer grazing, but no significant changes were observed in functional fingerprints. In light-grown biofilms, warming also affected protozoan densities, but its effect on prokaryotic density and composition was less evident. In contrast, heterotrophic metabolic activities in light-grown biofilms under warming showed a decrease in the functional diversity towards a specialized use of several carbohydrates. Results suggest that prokaryotes are functionally redundant in dark biofilms but functionally plastic in light biofilms. The more complex and self-serving light-grown biofilm determines a more buffered response to temperature than dark-grown biofilms. Despite the moderate increase in temperature of only 2 degrees C, warming conditions drive significant changes in freshwater biofilms, which responded by finely tuning a complex network of interactions among microbial populations within the biofilm matri
dc.description.sponsorship
This study was funded by the Spanish Ministry of Economy and Competitiveness, project FLUMED-HOTSPOTS (CGL2011-30151-C02-01). V. Diaz Villanueva participated in this project supported by FONCYT (Argentina) (PICT-2007-01747) and CONICET (PIP 114-201101-00304)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Wiley
dc.relation
info:eu-repo/grantAgreement/MICINN//CGL2011-30151-C02-01/ES/HOT-SPOTS BIOGEOQUIMICOS Y MICROBIANOS EN RIOS MEDITERRANEOS. ESTRUCTURA Y FUNCION DEL BIOFILM MICROBIANO Y SU IMPLICACION EN LA GESTION DE LA CALIDAD DE LAS AGUAS FLUVIALES/
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Reproducció digital del document publicat a: http://dx.doi.org/10.1111/1462-2920.12428
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© Environmental Microbiology, 2014, vol. 16, núm. 8, p. 2550-2567
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Articles publicats (D-CCAA)
dc.rights
Tots els drets reservats
dc.subject
dc.title
Shifts in microbial community structure and function in light- and dark-grown biofilms driven by warming
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/embargoedAccess
dc.embargo.terms
Cap
dc.date.embargoEndDate
info:eu-repo/date/embargoEnd/2026-01-01
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
022817
dc.contributor.funder
dc.relation.ProjectAcronym
dc.identifier.eissn
1462-2920