Show simple item record

dc.contributor.authorLee, KCen_NZ
dc.contributor.authorArcher, SDJen_NZ
dc.contributor.authorBoyle, RHen_NZ
dc.contributor.authorLacap-Bugler, DCen_NZ
dc.contributor.authorBelnap, Jen_NZ
dc.contributor.authorPointing, SBen_NZ
dc.date.accessioned2017-08-14T22:49:17Z
dc.date.available2017-08-14T22:49:17Z
dc.date.copyright2016-09-26en_NZ
dc.identifier.citationFrontiers of Microbiology, 7:1489. doi: 10.3389/fmicb.2016.01489
dc.identifier.urihttp://hdl.handle.net/10292/10732
dc.description.abstractA common feature of microbial colonization in deserts is biological soil crusts (BSCs), and these comprise a complex community dominated by Cyanobacteria. Rock substrates, particularly sandstone, are also colonized by microbial communities. These are separated by bare sandy soil that also supports microbial colonization. Here we report a high-throughput sequencing study of BSC and cryptoendolith plus adjacent bare soil communities in the Colorado Plateau Desert, Utah, USA. Bare soils supported a community with low levels of recoverable DNA and high evenness, whilst BSC yielded relatively high recoverable DNA, and reduced evenness compared to bare soil due to specialized crust taxa. The cryptoendolithic community displayed the greatest evenness but the lowest diversity, reflecting the highly specialized nature of these communities. A strong substrate-dependent pattern of community assembly was observed, and in particular cyanobacterial taxa were distinct. Soils were virtually devoid of photoautotrophic signatures, BSC was dominated by a closely related group of Microcoleus/Phormidium taxa, whilst cryptoendolithic colonization in sandstone supported almost exclusively a single genus, Chroococcidiopsis. We interpret this as strong evidence for niche filtering of taxa in communities. Local inter-niche recruitment of photoautotrophs may therefore be limited and so communities likely depend significantly on cyanobacterial recruitment from distant sources of similar substrate. We discuss the implication of this finding in terms of conservation and management of desert microbiota.en_NZ
dc.publisherFrontiers Media S.A.
dc.relation.urihttp://journal.frontiersin.org/article/10.3389/fmicb.2016.01489/full
dc.rights© 2016 Lee, Archer, Boyle, Lacap-Bugler, Belnap and Pointing. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
dc.subjectBiological soil crust; Cryptoendolith; Cyanobacteria; Desert; Utah
dc.titleNiche Filtering of Bacteria in Soil and Rock Habitats of the Colorado Plateau Desert, Utah, USAen_NZ
dc.typeJournal Article
dc.rights.accessrightsOpenAccessen_NZ
dc.identifier.doi10.3389/fmicb.2016.01489en_NZ
pubs.elements-id211632
aut.relation.journalFrontiers Microbiologyen_NZ


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record