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Microbial Ecology

, Volume 57, Issue 4, pp 640–648 | Cite as

Evaluation of the Airborne Bacterial Population in the Periodically Confined Antarctic Base Concordia

  • Rob Van Houdt
  • Patrick De Boever
  • Ilse Coninx
  • Claire Le Calvez
  • Roberto Dicasillati
  • Jacques Mahillon
  • Max Mergeay
  • Natalie Leys
Original Article

Abstract

The environmental airborne bacterial population in relation to human confinement was investigated over a period of 1 year in the Concordia Research Station, which is located on the Eastern Antarctic plateau. The unique location of the station makes it suitable for different research domains such as glaciology, atmospheric sciences, astronomy, etc. Furthermore, it is used as a test bed for long-duration spaceflights to study the physiologic and psychological adaptation to isolated environments. A total of 96 samples were collected at eight different locations in the station at regular intervals. The airborne bacterial contamination was for 90% of the samples lower than 10.0 × 102 colony-forming units per cubic meter of air (CFU/m3) and the total bacterial contamination increased over time during confinement but diminished after re-opening of the base. Viable airborne bacteria with different morphology were identified by biochemical analyses. The predominant microflora was identified as Staphylococcus sp. (24.9% of total) and Bacillus sp. (11.6% of total) and was associated with human activity, but also environmental species such as Sphingomonas paucimobilis (belonging to the α-Proteobacteria) could establish themselves in the airborne population. A few opportunistic pathogens (6%) were also identified.

Keywords

International Space Station Sphingomonas Crew Member Airborne Bacterium Closed Period 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgements

This study was financially supported by the European Space Agency (ESA-PRODEX) and the Belgian Science Policy (Belspo) through the MISSEX project (PRODEX agreements no. C90254). We are grateful to the MISSEX partners and to C. Lasseur, C. Paillé, and B. Lamaze from ESTEC/ESA for their constant support and advice; and to IPEV and PNRA for logistics.

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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  • Rob Van Houdt
    • 1
  • Patrick De Boever
    • 1
  • Ilse Coninx
    • 1
  • Claire Le Calvez
    • 2
  • Roberto Dicasillati
    • 3
  • Jacques Mahillon
    • 4
  • Max Mergeay
    • 1
  • Natalie Leys
    • 1
  1. 1.Laboratory for Molecular and Cellular BiologyBelgian Nuclear Research CentreMolBelgium
  2. 2.French Polar Institute Paul Emile Victor (IPEV)PlouzanéFrance
  3. 3.Programma Nazionale di Ricerche in Antartide (PNRA)RomaItaly
  4. 4.Laboratory of Food and Environmental MicrobiologyUniversité Catholique de LouvainLouvain-la-NeuveBelgium

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