Cryoconite holes are small pits present on the glacier surface containing a fine-grained sediment on the bottom. They are a biologically active and protected microhabitat in the glacial ecosystem. In this study it has been studied the temporal variation of bacterial communities in crioconite holes on the Forni Glacier (Stelvio National Park, Italian Alps). The results showed a temporal trend characterized by a predominant autotrophic Cyanobacteria population in the first part of the ablation season, followed by an increasing in abundance of heteroptrophic Sphingobacteriales populations. Also some hole feature explained a fraction of the variation of bacterial communities, but less than temporal variation.

Bacterial communities changes in cryoconite on an alpine glacier / F. Pittino, A. Franzetti, F. Navarra, I. Tagliaferri, I. Gandolfi, G. Bestetti, U. Minora, R.S. Azzoni, G. Diolaiuti, C. Smiraglia, R. Ambrosini - In: Symposium for Research in Protected Areas[s.l] : Salzburger Nationalparkfonds, 2018. - ISBN 9783700183174. - pp. 509-512 (( Intervento presentato al 6. convegno Symposium for Research in Protected Areas tenutosi a Wien nel 2017.

Bacterial communities changes in cryoconite on an alpine glacier

R.S. Azzoni;G. Diolaiuti;C. Smiraglia;R. Ambrosini
2018

Abstract

Cryoconite holes are small pits present on the glacier surface containing a fine-grained sediment on the bottom. They are a biologically active and protected microhabitat in the glacial ecosystem. In this study it has been studied the temporal variation of bacterial communities in crioconite holes on the Forni Glacier (Stelvio National Park, Italian Alps). The results showed a temporal trend characterized by a predominant autotrophic Cyanobacteria population in the first part of the ablation season, followed by an increasing in abundance of heteroptrophic Sphingobacteriales populations. Also some hole feature explained a fraction of the variation of bacterial communities, but less than temporal variation.
Cryoconite; Glaciers; Alps; Bacteria communities; Temporal variation
Settore BIO/07 - Ecologia
Settore GEO/04 - Geografia Fisica e Geomorfologia
Settore BIO/19 - Microbiologia Generale
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2434/747003
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