Reference : Biogeographical distribution and ecological ranges of benthic cyanobacteria in East Anta...
Scientific journals : Article
Life sciences : Microbiology
http://hdl.handle.net/2268/19903
Biogeographical distribution and ecological ranges of benthic cyanobacteria in East Antarctic lakes
English
Taton, A. [> > > >]
Grubisic, Stana mailto [Université de Liège - ULg > Services administratifs généraux > Protection et hygiène du travail (SUPHT) >]
Balthasart, Pierre mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Département des sciences et gestion de l'environnement >]
Hodgson, D. A. [> > > >]
Laybourn-Parry, J. [> > > >]
Wilmotte, Annick mailto [Université de Liège - ULg > Département des sciences de la vie > Enzymologie >]
Aug-2006
FEMS Microbiology Ecology
Blackwell Publishing
57
2
272-289
Yes (verified by ORBi)
International
0168-6496
Oxford
[en] cyanobacteria ; lake microbial mats ; East Antarctic ; morphological and molecular biodiversity
[en] For the first time, the cyanobacterial diversity from microbial mats in lakes of Eastern Antarctica was investigated using microscopic and molecular approaches. The present study assessed the biogeographical distribution of cyanobacteria in Antarctica. Five samples were taken from four lakes spanning a range of different ecological environments in Larsemann Hills, Vestfold Hills and Rauer Islands to evaluate the influence of lake characteristics on the cyanobacterial diversity. Seventeen morphospecies and 28 16S rRNA gene-based operational taxonomic units belonging to the Oscillatoriales, Nostocales and Chroococcales were identified. The internal transcribed spacer was evaluated to complement the 16S rRNA gene data and showed similar but more clear-cut tendencies. The molecular approach suggested that potential Antarctic endemic species, including a previously undiscovered diversity, are more abundant than has been estimated by morphological methods. Moreover, operational taxonomic units, also found outside Antarctica, were more widespread over the continent than potential endemics. The cyanobacterial diversity of the most saline lakes was found to differ from the others, and correlations between the sampling depth and the cyanobacterial communities can also be drawn. Comparison with database sequences illustrated the ubiquity of several cyanobacterial operational taxonomic units and their remarkable range of tolerance to harsh environmental conditions.
Union Européenne = European Union - UE = EU
MICROMAT
Researchers
http://hdl.handle.net/2268/19903
10.1111/j.1574-6941.2006.00110.x
http://www3.interscience.wiley.com/cgi-bin/fulltext/118596013/PDFSTART

File(s) associated to this reference

Fulltext file(s):

FileCommentaryVersionSizeAccess
Restricted access
BiogeoAntarcticcyanoTatonFEMS06.pdfPublisher postprint1.12 MBRequest copy

Bookmark and Share SFX Query

All documents in ORBi are protected by a user license.