Cyanobacterial diversity for an anthropogenic impact assessment in the Sør Rondane Mountains area, Antarctica

Abstract The recently inaugurated Belgian Princess Elisabeth Station has been built in the Sør Rondane Mountains (Dronning Maud Land). The construction site is situated close to the Utsteinen Nunatak (71°57′S, 23°20′E), on a granite ridge. Prior to the survey and construction activities, the site ha...

Full description

Bibliographic Details
Published in:Antarctic Science
Main Authors: Fernández-Carazo, Rafael, Namsaraev, Zorigto, Mano, Marie-Jose, Ertz, Damien, Wilmotte, Annick
Format: Article in Journal/Newspaper
Language:English
Published: Cambridge University Press (CUP) 2011
Subjects:
Geology
Ecology, Evolution, Behavior and Systematics
Oceanography
Antarctic
Dronning Maud Land
Sør-Rondane
Sør Rondane Mountains
Utsteinen
Utsteinen Nunatak
Ketelersbreen
Antarc*
Antarctic Science
Antarctica
Online Access:http://dx.doi.org/10.1017/s0954102011000824
https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0954102011000824
Description
Summary:Abstract The recently inaugurated Belgian Princess Elisabeth Station has been built in the Sør Rondane Mountains (Dronning Maud Land). The construction site is situated close to the Utsteinen Nunatak (71°57′S, 23°20′E), on a granite ridge. Prior to the survey and construction activities, the site had been subject to limited or no direct human impacts. Therefore, a biological inventory has been started for future evaluations of human impacts in the area. This study presents the cyanobacterial diversity of ten samples from the Utsteinen ridge, the Utsteinen Nunatak in the vicinity of the station's site and the more distant Ketelersbreen Dry Valley. All samples were taken before the station was built and were studied by light microscopy and Denaturing Gradient Gel Electrophoresis. Two strains were also isolated. Two different phenol-based extraction methods, with and without detergent-based steps, were tested to improve the quality of molecular detection from these environmental samples. We observed high cyanobacterial diversity (ten morphotypes and 13 operational taxonomic units) in comparison to other Antarctic terrestrial locations and a widespread distribution pattern within the Sør Rondane Mountains area. This might reflect the habitat similarities and/or the easy local dispersal capabilities of microorganisms within the region. The high diversity and proportion of potential endemic (46%) operational taxonomic units, of which 23% were newly described, suggest that this area could have acted as a biological refuge during past glaciations.

Similar Items