Show simple item record  

dc.contributor.authorNiederberger, Thomas D.en_NZ
dc.contributor.authorSohm, Jill A.en_NZ
dc.contributor.authorGunderson, Troy E.en_NZ
dc.contributor.authorParker, Alexander E.en_NZ
dc.contributor.authorTirindelli, Joëlleen_NZ
dc.contributor.authorCapone, Douglas G.en_NZ
dc.contributor.authorCarpenter, Edward J.en_NZ
dc.contributor.authorCary, S. Craigen_NZ
dc.coverage.spatialSwitzerlanden_NZ
dc.date.accessioned2015-05-27T03:56:36Z
dc.date.available2015-01-28en_NZ
dc.date.available2015-05-27T03:56:36Z
dc.date.issued2015-01-28en_NZ
dc.identifier.citationNiederberger, T. D., Sohm, J. A., Gunderson, T. E., Parker, A. E., Tirindelli, J., Capone, D. G., … Cary, S. C. (2015). Microbial community composition of transiently wetted Antarctic Dry Valley soils. Frontiers in Microbiology, 6, article no. 9. http://doi.org/10.3389/fmicb.2015.00009en
dc.identifier.issn1664-302Xen_NZ
dc.identifier.urihttps://hdl.handle.net/10289/9342
dc.description.abstractDuring the summer months, wet (hyporheic) soils associated with ephemeral streams and lake edges in the Antarctic Dry Valleys (DVs) become hotspots of biological activity and are hypothesized to be an important source of carbon and nitrogen for arid DV soils. Recent research in the DV has focused on the geochemistry and microbial ecology of lakes and arid soils, with substantially less information being available on hyporheic soils. Here, we determined the unique properties of hyporheic microbial communities, resolved their relationship to environmental parameters and compared them to archetypal arid DV soils. Generally, pH increased and chlorophyll a concentrations decreased along transects from wet to arid soils (9.0 to ~7.0 for pH and ~0.8 to ~5 μg/cm3 for chlorophyll a, respectively). Soil water content decreased to below ~3% in the arid soils. Community fingerprinting-based principle component analyses revealed that bacterial communities formed distinct clusters specific to arid and wet soils; however, eukaryotic communities that clustered together did not have similar soil moisture content nor did they group together based on sampling location. Collectively, rRNA pyrosequencing indicated a considerably higher abundance of Cyanobacteria in wet soils and a higher abundance of Acidobacterial, Actinobacterial, Deinococcus/Thermus, Bacteroidetes, Firmicutes, Gemmatimonadetes, Nitrospira, and Planctomycetes in arid soils. The two most significant differences at the genus level were Gillisia signatures present in arid soils and chloroplast signatures related to Streptophyta that were common in wet soils. Fungal dominance was observed in arid soils and Viridiplantae were more common in wet soils. This research represents an in-depth characterization of microbial communities inhabiting wet DV soils. Results indicate that the repeated wetting of hyporheic zones has a profound impact on the bacterial and eukaryotic communities inhabiting in these areas.
dc.format.mimetypeapplication/pdf
dc.language.isoenen_NZ
dc.publisherFRONTIERS RESEARCH FOUNDATIONen_NZ
dc.rights©2015 the authors.This is an open-access article distributed under Creative Commons Attribution License(CCBY).
dc.subjectScience & Technologyen_NZ
dc.subjectLife Sciences & Biomedicineen_NZ
dc.subjectMicrobiologyen_NZ
dc.subjectDry Valleyen_NZ
dc.subjectAntarcticaen_NZ
dc.subjectmicrobial diversityen_NZ
dc.subjectmicrobial communityen_NZ
dc.subjecthyporheicen_NZ
dc.subjectPOLAR DESERTen_NZ
dc.subjectBACTERIAL DIVERSITYen_NZ
dc.subjectVICTORIA LANDen_NZ
dc.subjectSP-NOV.en_NZ
dc.subjectFAMILY FLAVOBACTERIACEAEen_NZ
dc.subjectTAYLOR VALLEYen_NZ
dc.subjectMINERAL SOILSen_NZ
dc.subjectLAKE ICEen_NZ
dc.subjectSTREAMSen_NZ
dc.subjectBIODIVERSITYen_NZ
dc.titleMicrobial community composition of transiently wetted Antarctic Dry Valley soilsen_NZ
dc.typeJournal Article
dc.identifier.doi10.3389/fmicb.2015.00009en_NZ
dc.relation.isPartOfFrontiers in Microbiologyen_NZ
pubs.begin-page9en_NZ
pubs.elements-id119260
pubs.issueJANen_NZ
pubs.publication-statusPublisheden_NZ
pubs.volume6en_NZ
uow.identifier.article-noARTN 9


Files in this item

This item appears in the following Collection(s)

Show simple item record