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See detailBiogeography of terrestrial cyanobacteria from Antarctic ice-free areas
Namsaraev, Zorigto ULg; Mano, Marie-José ULg; Fernandez Carazo, Rafael ULg et al

in Annals of Glaciology (2010), 51(56), 171-177

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 ... [more ▼]

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. [less ▲]

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See detailFossil cyanobacterial DNA from sediment cores at Beak Island (Antarctic Peninsula): challenges for a molecular approach
Fernandez Carazo, Rafael ULg; Wilmotte, Annick ULg

in Decleir, Hugo; De Broyer, Claude; Dehairs, Frank (Eds.) et al CONTACTFORUM Belgian IPY symposium. The contribution of Belgian Research to the achievements of the International Polar Year 2007-2009 (2010)

Two sediment cores taken from lakes BK1 and BK2 in Beak Island (Trinity Peninsula, Antarctic Peninsula) were analysed. The cores were divided in two sections (lacustrine and marine). Changes in ... [more ▼]

Two sediment cores taken from lakes BK1 and BK2 in Beak Island (Trinity Peninsula, Antarctic Peninsula) were analysed. The cores were divided in two sections (lacustrine and marine). Changes in cyanobacterial diversity occurring within the lacustrine section, when the lake was isolated from the sea, were studied. [less ▲]

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See detailBaseline data on cyanobacterial diversity near the new Princess Elizabeth Antarctic research station.
Fernandez Carazo, Rafael ULg; Namsaraev, Zorigto; Ertz, Damien et al

Poster (2009, July 27)

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See detailExploring the Holocene through fossil cyanobacterial sequences from Antarctic lake sediments.
Fernandez Carazo, Rafael ULg; Waleron, Krzysztof; Hodgson, Dominic et al

Poster (2009, July 27)

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See detailFossil cyanobacterial sequences in Antarctic lake sediments
Fernandez Carazo, Rafael ULg; Hodgson, Dominique; Wilmotte, Annick

Poster (2008, August 31)

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See detailCyanobacterial diversity in the Transantarctic Mountains (Antarctica).
Fernandez Carazo, Rafael ULg; Hodgson, Dominic; Wilmotte, Annick

Poster (2008, August 31)

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See detailCyanobacterial diversity at Utsteinen: The impact of the “zero emission” research station in Antarctica
Fernandez Carazo, Rafael ULg; Ertz, Damien; Wilmotte, Annick

Poster (2007, October 11)

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