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dc.contributor.authorNgugi, David
dc.contributor.authorAntunes, Andre
dc.contributor.authorBrune, Andreas
dc.contributor.authorStingl, Ulrich
dc.date.accessioned2015-08-03T09:34:49Z
dc.date.available2015-08-03T09:34:49Z
dc.date.issued2011-12-01
dc.identifier.citationNGUGI, D. K., ANTUNES, A., BRUNE, A., & STINGL, U. (2011). Biogeography of pelagic bacterioplankton across an antagonistic temperature-salinity gradient in the Red Sea. Molecular Ecology, 21(2), 388–405. doi:10.1111/j.1365-294x.2011.05378.x
dc.identifier.issn09621083
dc.identifier.pmid22133021
dc.identifier.doi10.1111/j.1365-294X.2011.05378.x
dc.identifier.urihttp://hdl.handle.net/10754/561950
dc.description.abstractThe Red Sea is a unique marine ecosystem with contrasting gradients of temperature and salinity along its north-to-south axis. It is an extremely oligotrophic environment that is characterized by perpetual year-round water column stratification, high annual solar irradiation, and negligible riverine and precipitation inputs. In this study, we investigated whether the contemporary environmental conditions shape community assemblages by pyrosequencing 16S rRNA genes of bacteria in surface water samples collected from the northeastern half of this water body. A combined total of 1855 operational taxonomic units (OTUs) were recovered from the 'small-cell' and 'large-cell' fractions. Here, a few major OTUs affiliated with Cyanobacteria and Proteobacteria accounted for â93% of all sequences, whereas a tail of 'rare' OTUs represented most of the diversity. OTUs allied to Surface 1a/b SAR11 clades and Prochlorococcus related to the high-light-adapted (HL2) ecotype were the most widespread and predominant sequence types. Interestingly, the frequency of taxa that are typically found in the upper mesopelagic zone was significantly elevated in the northern transects compared with those in the central, presumably as a direct effect of deep convective mixing in the Gulf of Aqaba and water exchange with the northern Red Sea. Although temperature was the best predictor of species richness across all major lineages, both spatial and environmental distances correlated strongly with phylogenetic distances. Our results suggest that the bacterial diversity of the Red Sea is as high as in other tropical seas and provide evidence for fundamental differences in the biogeography of pelagic communities between the northern and central regions. © 2011 Blackwell Publishing Ltd.
dc.publisherWiley
dc.subject16S rRNA
dc.subjectbacteria
dc.subjectbiogeography
dc.subjectoperational taxonomic unit
dc.subjectProchlorococcus
dc.subjectpyrosequencing
dc.subjectRed Sea
dc.subjectSAR11
dc.titleBiogeography of pelagic bacterioplankton across an antagonistic temperature-salinity gradient in the Red Sea
dc.typeArticle
dc.contributor.departmentRed Sea Research Center (RSRC)
dc.contributor.departmentBiological and Environmental Sciences and Engineering (BESE) Division
dc.contributor.departmentMarine Science Program
dc.contributor.departmentMarine Microbial Ecology Research Group
dc.identifier.journalMolecular Ecology
dc.contributor.institutionDepartment of Biogeochemistry, Max Planck Institute for Terrestrial Microbiology, Karl-von-Frisch-Strasse 10, D-35043 Marburg, Germany
kaust.personNgugi, David
kaust.personAntunes, Andre
kaust.personStingl, Ulrich
dc.relation.issupplementedbybioproject:PRJEB2645
display.relations<b>Is Supplemented By:</b><br/> <ul><li><i>[Bioproject]</i> <br/> Title: Biogeography of pelagic bacterioplankton across an antagonistic temperature-salinity gradient in the Red SeaPublication Date: 2012-08-02. bioproject: <a href="https://www.ncbi.nlm.nih.gov/bioproject/?term=PRJEB2645" >PRJEB2645</a> Handle: <a href="http://hdl.handle.net/10754/666425" >10754/666425</a></a></li></ul>
dc.date.published-online2011-12-01
dc.date.published-print2012-01


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