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dc.contributor.authorSilva, Luis
dc.contributor.authorCalleja Cortes, Maria de Lluch
dc.contributor.authorIvetic, Snjezana
dc.contributor.authorHuete-Stauffer, Tamara
dc.contributor.authorRoth, Florian
dc.contributor.authorCarvalho, Susana
dc.contributor.authorMoran, Xose Anxelu G.
dc.date.accessioned2020-08-18T05:46:51Z
dc.date.available2020-08-18T05:46:51Z
dc.date.issued2020-08-16
dc.date.submitted2020-04-20
dc.identifier.citationSilva, L., Calleja, M. L., Ivetic, S., Huete-Stauffer, T., Roth, F., Carvalho, S., & Morán, X. A. G. (2020). Heterotrophic bacterioplankton responses in coral- and algae-dominated Red Sea reefs show they might benefit from future regime shift. Science of The Total Environment, 141628. doi:10.1016/j.scitotenv.2020.141628
dc.identifier.issn0048-9697
dc.identifier.doi10.1016/j.scitotenv.2020.141628
dc.identifier.urihttp://hdl.handle.net/10754/664644
dc.description.abstractIn coral reefs, dissolved organic matter (DOM) cycling is a critical process for sustaining ecosystem functioning. However, global and local stressors have caused persistent shifts from coral- to algae-dominated benthic communities. The influence of such phase shifts on DOM nature and its utilization by heterotrophic bacterioplankton remains poorly studied. Every second month for one year, we retrieved seawater samples enriched in DOM produced by coral- and algae-dominated benthic communities in a central Red Sea reef during a full annual cycle. Seawater incubations were conducted in the laboratory under in situ temperature and light conditions by inoculating enriched DOM samples with bacterial assemblages collected in the surrounding waters. Dissolved organic carbon (DOC) concentrations were higher in the warmer months (May–September) in both communities, resulting in higher specific growth rates and bacterial growth efficiencies (BGE). However, these high summer values were significantly enhanced in algal-DOM relative to coral-DOM, suggesting the potential for bacterioplankton biomass increase in reefs with algae replacing healthy coral cover under warmer conditions. The potential exacerbation of heterotrophic bacterial activity in the ongoing widespread regime shift from coral- to algae-dominated communities may have detrimental consequences for the overall health of tropical coral reefs.
dc.description.sponsorshipWe gratefully acknowledge Miguel Viegas, João Curdia and Rodrigo Villalobos who aided us with laboratory and fieldwork and KAUST Coastal and Marine Resources Core Lab (CMOR) for their diligent fieldwork assistance. Funding: This project was supported by King Abdullah University of Science and Technology (KAUST) through the baseline research funding provided to X.A.G. Morán, S. Carvalho was financially supported by Saudi Aramco / KAUST Center for Marine Environmental Observations. This research was undertaken in accordance with the policies and procedures of KAUST. Permissions relevant for KAUST to undertake the research have been obtained from the applicable governmental agencies in the Kingdom of Saudi Arabia.
dc.publisherElsevier BV
dc.relation.urlhttps://linkinghub.elsevier.com/retrieve/pii/S0048969720351573
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Science of The Total Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Science of The Total Environment, [, , (2020-08-16)] DOI: 10.1016/j.scitotenv.2020.141628 . © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.titleHeterotrophic bacterioplankton responses in coral- and algae-dominated Red Sea reefs show they might benefit from future regime shift
dc.typeArticle
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentMarine Science Program
dc.contributor.departmentMicrobial oceanography Research Group
dc.contributor.departmentRed Sea Research Center (RSRC)
dc.identifier.journalScience of The Total Environment
dc.rights.embargodate2022-08-16
dc.eprint.versionPost-print
dc.contributor.institutionDepartment of Climate Geochemistry, Max Planck Institute for Chemistry (MPIC), Hahn-Meitner-Weg 1, 55128 Mainz, Germany.
dc.contributor.institutionBaltic Sea Centre, Stockholm University, 11418 Stockholm, Sweden.
dc.contributor.institutionTvärminne Zoological Station, University of Helsinki, 00100 Helsinki, Finland.
dc.identifier.pages141628
kaust.personSilva, Luis
kaust.personCalleja Cortes, Maria de Lluch
kaust.personIvetic, Snjezana
kaust.personHuete-Stauffer, Tamara
kaust.personRoth, Florian
kaust.personCarvalho, Susana
kaust.personMoran, Xose Anxelu G.
dc.date.accepted2020-08-09
refterms.dateFOA2020-08-18T05:51:30Z
kaust.acknowledged.supportUnitCoastal and Marine Resources Core Lab (CMOR)
kaust.acknowledged.supportUnitKAUST Coastal and Marine Resources Core Lab
dc.date.published-online2020-08-16
dc.date.published-print2021-01


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