Extremophiles

, Volume 21, Issue 6, pp 1069–1080 | Cite as

Effect of environmental parameters on biodiversity of the fungal component in lithic Antarctic communities

  • Laura Selbmann
  • Silvano Onofri
  • Claudia Coleine
  • Pietro Buzzini
  • Fabiana Canini
  • Laura Zucconi
Original Paper

Abstract

A wide sampling of rocks, colonized by microbial epi–endolithic communities, was performed along an altitudinal gradient from sea level to 3600 m asl and sea distance from the coast to 100 km inland along the Victoria Land Coast, Antarctica. Seventy-two rock samples of different typology, representative of the entire survey, were selected and studied using denaturing gradient gel electrophoresis to compare variation in fungal diversity according to environmental conditions along this altitudinal and sea distance transect. Lichenized fungi were largely predominant in all the samples studied and the biodiversity was heavily influenced even by minimal local variations. The n-MDS analysis showed that altitude and sea distance affect fungal biodiversity, while sandstone allows the communities to maintain high biodiversity indices. The Pareto-Lorenz curves indicate that all the communities analyzed are highly adapted to extreme conditions but scarcely resilient, so any external perturbation may have irreversible effects on these fragile ecosystems.

Keywords

Antarctic Climate change DGGE Endolithic communities Fungi 

Notes

Acknowledgements

The authors thank the Italian National Programme of Antarctic Researches (PNRA) (projects 2013/AZ1.17; PNRA2014_00132; PNRA16_00006) for the financial support to the project. The Italian National Museum of Antarctica (MNA) is acknowledged for financial support to the Mycological section on the MNA, preserving rock Antarctic samples used in this study. Dr. Prof. Steven Emslie (University of North Carolina Wilmington) is kindly acknowledged for the accurate English revision of the text.

Supplementary material

792_2017_967_MOESM1_ESM.pdf (326 kb)
Supplementary material 1 (PDF 325 kb)
792_2017_967_MOESM2_ESM.pdf (151 kb)
Supplementary material 2 (PDF 150 kb)
792_2017_967_MOESM3_ESM.docx (12 kb)
Supplementary material 3 (DOCX 12 kb)

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Copyright information

© Springer Japan KK 2017

Authors and Affiliations

  • Laura Selbmann
    • 1
  • Silvano Onofri
    • 1
  • Claudia Coleine
    • 1
  • Pietro Buzzini
    • 2
  • Fabiana Canini
    • 1
  • Laura Zucconi
    • 1
  1. 1.Department of Ecological and Biological Sciences (DEB)University of TusciaViterboItaly
  2. 2.Department of Agricultural, Food and Environmental Sciences, Industrial Yeasts Collection DBVPGUniversity of PerugiaPerugiaItaly

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