Hypolithic and soil microbial community assembly along an aridity gradient in the Namib Desert

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dc.contributor.authorStomeo, Francesca
dc.contributor.authorValverde, Angel
dc.contributor.authorPointing, Stephen B.
dc.contributor.authorMcKay, Christopher P.
dc.contributor.authorWarren-Rhodes, Kimberley A.
dc.contributor.authorTuffin, Marla I.
dc.contributor.authorSeely, Mary
dc.contributor.authorCowan, Donald A.
dc.date.accessioned2018-03-01T10:08:50Z
dc.date.available2018-03-01T10:08:50Z
dc.date.issued2013
dc.description.abstractThe Namib Dessert is considered the oldest desert in the world and hyperarid for the last 5 million years. However, the environmental buffering provided by quartz and other translucent rocks supports extensive hypolithic microbial communities. In this study, open soil and hypolithic microbial communities have been investigated along an East–West transect characterized by an inverse fog-rainfall gradient. Multivariate analysis showed that structurally different microbial communities occur in soil and in hypolithic zones. Using variation partitioning, we found that hypolithic communities exhibited a fog-related distribution as indicated by the significant East– West clustering. Sodium content was also an important environmental factor affecting the composition of both soil and hypolithic microbial communities. Finally, although null models for patterns in microbial communities were not supported by experimental data, the amount of unexplained variation (68–97 %) suggests that stochastic processes also play a role in the assembly of such communities in the Namib Desert.en_US
dc.description.accreditationWeb of Science
dc.identifier.citationStomeo, F. et al. (2013). Hypolithic and soil microbial community assembly along an aridity gradient in the Namib Desert. Extremophiles, 17: 329 – 337.en_US
dc.identifier.issn1431-0651
dc.identifier.urihttp://dx.doi.org/10.1007/s00792-013-0519-7
dc.identifier.urihttp://hdl.handle.net/10566/3555
dc.language.isoenen_US
dc.privacy.showsubmitterFALSE
dc.publisherSpringeren_US
dc.rightsThis is the author-version of the article published online at: http://dx.doi.org/10.1007/s00792-013-0519-7
dc.status.ispeerreviewedTRUE
dc.subjectBacteriaen_US
dc.subjectCyanobacteriaen_US
dc.subjectHypolithsen_US
dc.subjectNamib Deserten_US
dc.subjectNicheen_US
dc.subjectSoilsen_US
dc.titleHypolithic and soil microbial community assembly along an aridity gradient in the Namib Deserten_US
dc.typeArticleen_US

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