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Article: Hypolithic community shifts occur as a result of liquid water availability along environmental gradients in China's hot and cold hyperarid deserts

TitleHypolithic community shifts occur as a result of liquid water availability along environmental gradients in China's hot and cold hyperarid deserts
Authors
Issue Date2007
PublisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/EMI
Citation
Environmental Microbiology, 2007, v. 9 n. 2, p. 414-424 How to Cite?
AbstractHypolithic cyanobacterial communities occur in hot and cold hyperarid environments but the physical factors determining their diversity are not well understood. Here we report hypolithic diversity and colonization of a common quartz substrate at several hyperarid locations in the ancient deserts of north-western China, that experience varying mean annual temperature, rainfall and concomitant availability of liquid water in soil. Microscopy and enrichment culture resulted only in Chroococcidiopsis morphotypes which were ubiquitous, but community phylogenetic analysis revealed considerable cyanobacterial and heterotrophic bacterial diversity. Species Richness and Shannon's Diversity Index displayed a significant positive linear correlation with availability of liquid water but not temperature or rainfall alone. Several taxonomic groups occurred only in specific climatically defined locations, while for Chroococcidiopsis, Deinococcus and Phormidium location specific lineages within these genera were also evident. Multivariate analysis was used to illustrate pronounced community shifts due to liquid water availability, although these did not significantly affect the predicted functional relationships within any given assemblage in either hot or cold, wet or dry hyperarid deserts. This study clearly demonstrates that availability of liquid water, rather than temperature or rainfall per se is the key determinant of hypolithic diversity in hyperarid locations, and furthermore that functionally similar yet taxonomically distinct communities occur, characterized by the presence of taxa that are specific to defined levels of aridity. © 2006 The Authors.
Persistent Identifierhttp://hdl.handle.net/10722/178977
ISSN
2015 Impact Factor: 5.932
2015 SCImago Journal Rankings: 3.002
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorPointing, SBen_US
dc.contributor.authorWarrenRhodes, KAen_US
dc.contributor.authorLacap, DCen_US
dc.contributor.authorRhodes, KLen_US
dc.contributor.authorMckay, CPen_US
dc.date.accessioned2012-12-19T09:51:12Z-
dc.date.available2012-12-19T09:51:12Z-
dc.date.issued2007en_US
dc.identifier.citationEnvironmental Microbiology, 2007, v. 9 n. 2, p. 414-424en_US
dc.identifier.issn1462-2912en_US
dc.identifier.urihttp://hdl.handle.net/10722/178977-
dc.description.abstractHypolithic cyanobacterial communities occur in hot and cold hyperarid environments but the physical factors determining their diversity are not well understood. Here we report hypolithic diversity and colonization of a common quartz substrate at several hyperarid locations in the ancient deserts of north-western China, that experience varying mean annual temperature, rainfall and concomitant availability of liquid water in soil. Microscopy and enrichment culture resulted only in Chroococcidiopsis morphotypes which were ubiquitous, but community phylogenetic analysis revealed considerable cyanobacterial and heterotrophic bacterial diversity. Species Richness and Shannon's Diversity Index displayed a significant positive linear correlation with availability of liquid water but not temperature or rainfall alone. Several taxonomic groups occurred only in specific climatically defined locations, while for Chroococcidiopsis, Deinococcus and Phormidium location specific lineages within these genera were also evident. Multivariate analysis was used to illustrate pronounced community shifts due to liquid water availability, although these did not significantly affect the predicted functional relationships within any given assemblage in either hot or cold, wet or dry hyperarid deserts. This study clearly demonstrates that availability of liquid water, rather than temperature or rainfall per se is the key determinant of hypolithic diversity in hyperarid locations, and furthermore that functionally similar yet taxonomically distinct communities occur, characterized by the presence of taxa that are specific to defined levels of aridity. © 2006 The Authors.en_US
dc.languageengen_US
dc.publisherBlackwell Publishing Ltd. The Journal's web site is located at http://www.blackwellpublishing.com/journals/EMIen_US
dc.relation.ispartofEnvironmental Microbiologyen_US
dc.rightsEnvironmental Microbiology. Copyright © Blackwell Publishing Ltd.-
dc.subject.meshChinaen_US
dc.subject.meshCold Temperatureen_US
dc.subject.meshCyanobacteria - Classification - Genetics - Growth & Developmenten_US
dc.subject.meshDesert Climateen_US
dc.subject.meshEnvironmenten_US
dc.subject.meshHot Temperatureen_US
dc.subject.meshMolecular Sequence Dataen_US
dc.subject.meshPhylogenyen_US
dc.subject.meshQuartzen_US
dc.subject.meshRna, Ribosomal, 16S - Classification - Geneticsen_US
dc.subject.meshRainen_US
dc.subject.meshTemperatureen_US
dc.subject.meshWateren_US
dc.titleHypolithic community shifts occur as a result of liquid water availability along environmental gradients in China's hot and cold hyperarid desertsen_US
dc.typeArticleen_US
dc.identifier.emailPointing, SB: pointing@hkucc.hku.hken_US
dc.identifier.authorityPointing, SB=rp00771en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.1111/j.1462-2920.2006.01153.xen_US
dc.identifier.pmid17222139-
dc.identifier.scopuseid_2-s2.0-33846090678en_US
dc.identifier.hkuros124412-
dc.identifier.hkuros138274-
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33846090678&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume9en_US
dc.identifier.issue2en_US
dc.identifier.spage414en_US
dc.identifier.epage424en_US
dc.identifier.isiWOS:000243376800013-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridPointing, SB=6603986412en_US
dc.identifier.scopusauthoridWarrenRhodes, KA=6507272414en_US
dc.identifier.scopusauthoridLacap, DC=9640383000en_US
dc.identifier.scopusauthoridRhodes, KL=55168440900en_US
dc.identifier.scopusauthoridMcKay, CP=7101952183en_US
dc.identifier.citeulike1034705-

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