Abiotic factors affecting the bacterial and fungal diversity of permafrost in a rock glacier in the Stelvio Pass (Italian Central Alps)
The impact of climate change in the European Alps has been roughly twice the global average, dramatically reducing permafrost extent and thickening of its active layer. Therefore, the study of the abiotic factors (i.e. chemical/physical parameters) affecting the microbial diversity inhabiting Alpine...
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Online Access: | http://hdl.handle.net/10278/3742755 https://doi.org/10.1016/j.apsoil.2021.104079 |
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ftuniveneziairis:oai:iris.unive.it:10278/3742755 2024-04-14T08:12:57+00:00 Abiotic factors affecting the bacterial and fungal diversity of permafrost in a rock glacier in the Stelvio Pass (Italian Central Alps) Sannino C. Borruso L. Mezzasoma A. Battistel D. Ponti S. Turchetti B. Buzzini P. Guglielmin M. Sannino, C. Borruso, L. Mezzasoma, A. Battistel, D. Ponti, S. Turchetti, B. Buzzini, P. Guglielmin, M. 2021 http://hdl.handle.net/10278/3742755 https://doi.org/10.1016/j.apsoil.2021.104079 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000679310400004 volume:166 firstpage:104079 journal:APPLIED SOIL ECOLOGY http://hdl.handle.net/10278/3742755 doi:10.1016/j.apsoil.2021.104079 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85106917661 info:eu-repo/semantics/closedAccess Abiotic parameter Alpine permafrost Meyerozyma spp Microbial communities Settore CHIM/01 - Chimica Analitica info:eu-repo/semantics/article 2021 ftuniveneziairis https://doi.org/10.1016/j.apsoil.2021.104079 2024-03-21T18:18:29Z The impact of climate change in the European Alps has been roughly twice the global average, dramatically reducing permafrost extent and thickening of its active layer. Therefore, the study of the abiotic factors (i.e. chemical/physical parameters) affecting the microbial diversity inhabiting Alpine permafrost appears to be of dramatic relevance. Within the European Alps, the Stelvio area exhibits these effects in a particularly evident way, with important consequences on microbial ecosystems. Therefore, microbial communities inhabiting a permafrost core collected in the Scorluzzo active rock glacier (Stelvio Pass, Italian Central Alps) were investigated along a depth gradient (410 to 524 cm from the surface). The taxonomic structures of bacterial and fungal communities were investigated via a next-generation sequencing (NGS) approach (Illumina MiSeq), targeting the bacterial V3-V4 regions of 16S rDNA and the fungal ITS2 region. Abiotic soil factors (grain size, electrical conductivity, ice/water content, pH, Loss-on-Ignition - LOI, total and organic carbon, nitrogen and phosphorous) were analysed. Richness and Shannon-H diversity indices were correlated to abiotic factors. Bacterial diversity was significantly (p < 0.05) correlated with LOI, while fungal diversity was significantly (p < 0.05) correlated with the depth gradient. The Constrained Analysis of Principal (CAP) coordinates were used to study the correlation between abiotic parameters and the taxonomic structure of bacterial and fungal communities. Among all tested variables, the depth gradient, water content, pH and LOI affected the taxonomic structure of bacterial communities (in particular, the abundance of bacterial amplicon sequence variants - ASVs - assigned to Afipia sp., Chloroflexi, Gaiella sp., Oryzihumus sp. and Serratia, sp.), while fungal communities (ASVs assigned to Naganishia sp., Rhodotorula sp., Sordariomycetes and Taphrinales) were affected by the depth gradient. Co-occurrences (calculated by Pearson correlation coefficient) ... Article in Journal/Newspaper Ice permafrost Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Applied Soil Ecology 166 104079 |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
Abiotic parameter Alpine permafrost Meyerozyma spp Microbial communities Settore CHIM/01 - Chimica Analitica |
spellingShingle |
Abiotic parameter Alpine permafrost Meyerozyma spp Microbial communities Settore CHIM/01 - Chimica Analitica Sannino C. Borruso L. Mezzasoma A. Battistel D. Ponti S. Turchetti B. Buzzini P. Guglielmin M. Abiotic factors affecting the bacterial and fungal diversity of permafrost in a rock glacier in the Stelvio Pass (Italian Central Alps) |
topic_facet |
Abiotic parameter Alpine permafrost Meyerozyma spp Microbial communities Settore CHIM/01 - Chimica Analitica |
description |
The impact of climate change in the European Alps has been roughly twice the global average, dramatically reducing permafrost extent and thickening of its active layer. Therefore, the study of the abiotic factors (i.e. chemical/physical parameters) affecting the microbial diversity inhabiting Alpine permafrost appears to be of dramatic relevance. Within the European Alps, the Stelvio area exhibits these effects in a particularly evident way, with important consequences on microbial ecosystems. Therefore, microbial communities inhabiting a permafrost core collected in the Scorluzzo active rock glacier (Stelvio Pass, Italian Central Alps) were investigated along a depth gradient (410 to 524 cm from the surface). The taxonomic structures of bacterial and fungal communities were investigated via a next-generation sequencing (NGS) approach (Illumina MiSeq), targeting the bacterial V3-V4 regions of 16S rDNA and the fungal ITS2 region. Abiotic soil factors (grain size, electrical conductivity, ice/water content, pH, Loss-on-Ignition - LOI, total and organic carbon, nitrogen and phosphorous) were analysed. Richness and Shannon-H diversity indices were correlated to abiotic factors. Bacterial diversity was significantly (p < 0.05) correlated with LOI, while fungal diversity was significantly (p < 0.05) correlated with the depth gradient. The Constrained Analysis of Principal (CAP) coordinates were used to study the correlation between abiotic parameters and the taxonomic structure of bacterial and fungal communities. Among all tested variables, the depth gradient, water content, pH and LOI affected the taxonomic structure of bacterial communities (in particular, the abundance of bacterial amplicon sequence variants - ASVs - assigned to Afipia sp., Chloroflexi, Gaiella sp., Oryzihumus sp. and Serratia, sp.), while fungal communities (ASVs assigned to Naganishia sp., Rhodotorula sp., Sordariomycetes and Taphrinales) were affected by the depth gradient. Co-occurrences (calculated by Pearson correlation coefficient) ... |
author2 |
Sannino, C. Borruso, L. Mezzasoma, A. Battistel, D. Ponti, S. Turchetti, B. Buzzini, P. Guglielmin, M. |
format |
Article in Journal/Newspaper |
author |
Sannino C. Borruso L. Mezzasoma A. Battistel D. Ponti S. Turchetti B. Buzzini P. Guglielmin M. |
author_facet |
Sannino C. Borruso L. Mezzasoma A. Battistel D. Ponti S. Turchetti B. Buzzini P. Guglielmin M. |
author_sort |
Sannino C. |
title |
Abiotic factors affecting the bacterial and fungal diversity of permafrost in a rock glacier in the Stelvio Pass (Italian Central Alps) |
title_short |
Abiotic factors affecting the bacterial and fungal diversity of permafrost in a rock glacier in the Stelvio Pass (Italian Central Alps) |
title_full |
Abiotic factors affecting the bacterial and fungal diversity of permafrost in a rock glacier in the Stelvio Pass (Italian Central Alps) |
title_fullStr |
Abiotic factors affecting the bacterial and fungal diversity of permafrost in a rock glacier in the Stelvio Pass (Italian Central Alps) |
title_full_unstemmed |
Abiotic factors affecting the bacterial and fungal diversity of permafrost in a rock glacier in the Stelvio Pass (Italian Central Alps) |
title_sort |
abiotic factors affecting the bacterial and fungal diversity of permafrost in a rock glacier in the stelvio pass (italian central alps) |
publishDate |
2021 |
url |
http://hdl.handle.net/10278/3742755 https://doi.org/10.1016/j.apsoil.2021.104079 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000679310400004 volume:166 firstpage:104079 journal:APPLIED SOIL ECOLOGY http://hdl.handle.net/10278/3742755 doi:10.1016/j.apsoil.2021.104079 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85106917661 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.1016/j.apsoil.2021.104079 |
container_title |
Applied Soil Ecology |
container_volume |
166 |
container_start_page |
104079 |
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1796310804849491968 |