Biogeography of terrestrial cyanobacteria from Antarctic ice-free areas

peer reviewed Cyanobacteria inhabit the Antarctic continent and have even been observed in the most southerly ice-free areas of Antarctica (86–878 S). The highest molecular diversity of cyanobacterial communities was found in the areas located between 708 S and 808 S. Further south and further north...

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Bibliographic Details
Published in:Annals of Glaciology
Main Authors: Namsaraev, Zorigto, Mano, Marie-José, Fernandez Carazo, Rafael, Wilmotte, Annick
Other Authors: CIP - Centre d'Ingénierie des Protéines - ULiège
Format: Article in Journal/Newspaper
Language:English
Published: International Glaciological Society 2010
Subjects:
cyanobacteria
Antarctica
biogeography
terretrial
Life sciences
Environmental sciences & ecology
Microbiology
Sciences du vivant
Sciences de l’environnement & écologie
Microbiologie
Alexander Island
Annals of Glaciology
Antarc*
Antarctic
Antarctique*
Victoria Land
Online Access:https://orbi.uliege.be/handle/2268/98041
https://orbi.uliege.be/bitstream/2268/98041/1/a56A023.pdf
https://doi.org/10.3189/172756411795931930
Description
Summary:peer reviewed Cyanobacteria inhabit the Antarctic continent and have even been observed in the most southerly ice-free areas of Antarctica (86–878 S). The highest molecular diversity of cyanobacterial communities was found in the areas located between 708 S and 808 S. Further south and further north from this zone, the diversity abruptly decreased. Seventy-nine per cent (33 of 42 operational taxonomic units) of Antarctic terrestrial cyanobacteria have a cosmopolitan distribution. Analysis of the sampling efforts shows that only three regions (southern Victoria Land, the Sør Rondane Mountains and Alexander Island) have been particularly well studied, while other areas did not receive enough attention. Although cyanobacteria possess a capacity for long-range transport, regional populations in Antarctic ice-free areas seem to exist. The cyanobacterial communities of the three most intensively studied regions, separated from each other by a distance of 3000–3400 km, had a low degree of similarity with each other. Further development of microbial biogeography demands a standardized approach. For this purpose, as a minimal standard, we suggest using the sequence of cyanobacterial 16S rRNA gene between Escherichia coli positions 405–780. BIPOLES

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