Snowbed communities and soil C and N dynamics during a four-year investigation in the NW-Italian Alps
The snowbed habitats represent a relevant component of the alpine tundra biome, developing in areas characterized by a long-lasting snow cover. Such areas are particularly sensitive to climate changes, because small variations in air temperature, rain, and snowfall may considerably affect the pedocl...
Published in: | Arctic, Antarctic, and Alpine Research |
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Online Access: | https://hdl.handle.net/2434/936486 https://doi.org/10.1080/15230430.2022.2104001 |
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ftunivmilanoair:oai:air.unimi.it:2434/936486 2024-01-28T10:01:48+01:00 Snowbed communities and soil C and N dynamics during a four-year investigation in the NW-Italian Alps Emanuele Pintaldi Marco Pittarello Davide Viglietti Elena Quaglia Michele Eugenio D’Amico Giampiero Lombardi Nicola Colombo Michele Lonati Michele Freppaz P. Emanuele P. Marco V. Davide Q. Elena M.E. D'Amico L. Giampiero C. Nicola L. Michele F. Michele 2022 https://hdl.handle.net/2434/936486 https://doi.org/10.1080/15230430.2022.2104001 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000843721800001 volume:54 issue:1 firstpage:368 lastpage:385 numberofpages:18 journal:ARCTIC ANTARCTIC AND ALPINE RESEARCH https://hdl.handle.net/2434/936486 doi:10.1080/15230430.2022.2104001 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85136516697 info:eu-repo/semantics/openAccess LTER standard monitoring variable Salix herbacea topsoil phenology carbon and nitrogen alpine tundra Settore AGR/14 - Pedologia info:eu-repo/semantics/article 2022 ftunivmilanoair https://doi.org/10.1080/15230430.2022.2104001 2024-01-02T23:15:29Z The snowbed habitats represent a relevant component of the alpine tundra biome, developing in areas characterized by a long-lasting snow cover. Such areas are particularly sensitive to climate changes, because small variations in air temperature, rain, and snowfall may considerably affect the pedoclimate and plant phenology, which control the soil C and N cycling. Therefore, it is fundamental to identify the most sensitive abiotic and biotic variables affecting soil nutrient cycling. This work was performed at seven permanent snowbed sites belonging to Salicetum herbaceae vegetation community in the northwestern Italian Alps, at elevations between 2,686 and 2,840 m.a.s.l. During a four-year study, we investigated climate, pedoclimate, floristic composition, phenology, and soil C and N dynamics. We found that lower soil water content and earlier melt-out day decreased soil N-NH4 (+), N-NO3 (-), dissolved organic carbon (DOC), dissolved organic nitrogen (DON), total dissolved nitrogen (TDN), microbial nitrogen (Nmicr), microbial carbon (Cmicr), and C:Nmicr ratio. The progression of the phenological stages of Salix herbacea reduced soil N-NH4 (+) and increased DOC. Our results showed that the snow melt-out day, soil temperature, soil water content, and plant phenological stages were the most important factors affecting soil biogeochemical cycles, and they should be taken into account when assessing the effects of climate change in alpine tundra ecosystems, in the framework of long-term ecological research. Article in Journal/Newspaper Antarctic and Alpine Research Salix herbacea Tundra The University of Milan: Archivio Istituzionale della Ricerca (AIR) Arctic, Antarctic, and Alpine Research 54 1 368 385 |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
LTER standard monitoring variable Salix herbacea topsoil phenology carbon and nitrogen alpine tundra Settore AGR/14 - Pedologia |
spellingShingle |
LTER standard monitoring variable Salix herbacea topsoil phenology carbon and nitrogen alpine tundra Settore AGR/14 - Pedologia Emanuele Pintaldi Marco Pittarello Davide Viglietti Elena Quaglia Michele Eugenio D’Amico Giampiero Lombardi Nicola Colombo Michele Lonati Michele Freppaz Snowbed communities and soil C and N dynamics during a four-year investigation in the NW-Italian Alps |
topic_facet |
LTER standard monitoring variable Salix herbacea topsoil phenology carbon and nitrogen alpine tundra Settore AGR/14 - Pedologia |
description |
The snowbed habitats represent a relevant component of the alpine tundra biome, developing in areas characterized by a long-lasting snow cover. Such areas are particularly sensitive to climate changes, because small variations in air temperature, rain, and snowfall may considerably affect the pedoclimate and plant phenology, which control the soil C and N cycling. Therefore, it is fundamental to identify the most sensitive abiotic and biotic variables affecting soil nutrient cycling. This work was performed at seven permanent snowbed sites belonging to Salicetum herbaceae vegetation community in the northwestern Italian Alps, at elevations between 2,686 and 2,840 m.a.s.l. During a four-year study, we investigated climate, pedoclimate, floristic composition, phenology, and soil C and N dynamics. We found that lower soil water content and earlier melt-out day decreased soil N-NH4 (+), N-NO3 (-), dissolved organic carbon (DOC), dissolved organic nitrogen (DON), total dissolved nitrogen (TDN), microbial nitrogen (Nmicr), microbial carbon (Cmicr), and C:Nmicr ratio. The progression of the phenological stages of Salix herbacea reduced soil N-NH4 (+) and increased DOC. Our results showed that the snow melt-out day, soil temperature, soil water content, and plant phenological stages were the most important factors affecting soil biogeochemical cycles, and they should be taken into account when assessing the effects of climate change in alpine tundra ecosystems, in the framework of long-term ecological research. |
author2 |
P. Emanuele P. Marco V. Davide Q. Elena M.E. D'Amico L. Giampiero C. Nicola L. Michele F. Michele |
format |
Article in Journal/Newspaper |
author |
Emanuele Pintaldi Marco Pittarello Davide Viglietti Elena Quaglia Michele Eugenio D’Amico Giampiero Lombardi Nicola Colombo Michele Lonati Michele Freppaz |
author_facet |
Emanuele Pintaldi Marco Pittarello Davide Viglietti Elena Quaglia Michele Eugenio D’Amico Giampiero Lombardi Nicola Colombo Michele Lonati Michele Freppaz |
author_sort |
Emanuele Pintaldi |
title |
Snowbed communities and soil C and N dynamics during a four-year investigation in the NW-Italian Alps |
title_short |
Snowbed communities and soil C and N dynamics during a four-year investigation in the NW-Italian Alps |
title_full |
Snowbed communities and soil C and N dynamics during a four-year investigation in the NW-Italian Alps |
title_fullStr |
Snowbed communities and soil C and N dynamics during a four-year investigation in the NW-Italian Alps |
title_full_unstemmed |
Snowbed communities and soil C and N dynamics during a four-year investigation in the NW-Italian Alps |
title_sort |
snowbed communities and soil c and n dynamics during a four-year investigation in the nw-italian alps |
publishDate |
2022 |
url |
https://hdl.handle.net/2434/936486 https://doi.org/10.1080/15230430.2022.2104001 |
genre |
Antarctic and Alpine Research Salix herbacea Tundra |
genre_facet |
Antarctic and Alpine Research Salix herbacea Tundra |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000843721800001 volume:54 issue:1 firstpage:368 lastpage:385 numberofpages:18 journal:ARCTIC ANTARCTIC AND ALPINE RESEARCH https://hdl.handle.net/2434/936486 doi:10.1080/15230430.2022.2104001 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85136516697 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1080/15230430.2022.2104001 |
container_title |
Arctic, Antarctic, and Alpine Research |
container_volume |
54 |
container_issue |
1 |
container_start_page |
368 |
op_container_end_page |
385 |
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1789327214871838720 |