Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod
The study of plant phenology has frequently been used to link phenological events to various factors, such as temperature or photoperiod. In the high-alpine environment, proper timing of the phenological cycle has always been crucial to overcome harsh conditions and potential extreme events (i.e. sp...
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2020
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Online Access: | http://hdl.handle.net/2318/1757067 https://doi.org/10.1007/s11629-020-6079-2 https://link.springer.com/article/10.1007/s11629-020-6079-2 |
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ftunivtorino:oai:iris.unito.it:2318/1757067 2023-11-05T03:44:48+01:00 Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod Quaglia E. Ravetto Enri S. Perotti E. Probo M. Lombardi G. Lonati M. Quaglia E. Ravetto Enri S. Perotti E. Probo M. Lombardi G. Lonati M. 2020 http://hdl.handle.net/2318/1757067 https://doi.org/10.1007/s11629-020-6079-2 https://link.springer.com/article/10.1007/s11629-020-6079-2 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000561276200001 volume:17 issue:9 firstpage:2081 lastpage:2096 numberofpages:16 journal:JOURNAL OF MOUNTAIN SCIENCE http://hdl.handle.net/2318/1757067 doi:10.1007/s11629-020-6079-2 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85089735911 https://link.springer.com/article/10.1007/s11629-020-6079-2 info:eu-repo/semantics/openAccess Alpine plant Climate change Growing degree day Italian Alp Salix herbacea Snowbed vegetation info:eu-repo/semantics/article 2020 ftunivtorino https://doi.org/10.1007/s11629-020-6079-2 2023-10-10T22:26:43Z The study of plant phenology has frequently been used to link phenological events to various factors, such as temperature or photoperiod. In the high-alpine environment, proper timing of the phenological cycle has always been crucial to overcome harsh conditions and potential extreme events (i.e. spring frosts) but little is known about the response dynamics of the vegetation, which could shape the alpine landscape in a future of changing climate. Alpine tundra vegetation is composed by an array of species belonging to different phytosociological optima and with various survival strategies, and snowbed communities are a relevant expression of such an extreme-climate adapted flora. We set eight permanent plots with each one in a snowbed located on the Cimalegna plateau in Northwestern Italy and then we selected 10 most recurring species among our plots, all typical of the alpine tundra environment and classified in 3 different pools: snowbed specialists, grassland species and rocky debris species. For 3 years we registered the phenophases of each species during the whole growing season using an adaptation of the BBCH scale. We later focused on the three most biologically relevant phenophases, i.e., flower buds visible, full flowering, and beginning of seed dispersion. Three important season-related variables were chosen to investigate their relationship with the phenological cycle of the studied species: (i) the Day Of Year (DOY), the progressive number of days starting from the 1st of January, used as a proxy of photoperiod, (ii) Days From Snow Melt (DFSM), selected to include the relevance of the snow dynamics, and (iii) Growing Degree Days (GDD), computed as a thermal sum. Our analysis highlighted that phenological development correlated better with DFSM and GDD than with DOY. Indeed, models showed that DOY was always a worse predictor since it failed to overcome interannual variations, while DFSM and marginally GDD were better suited to predict the phenological development of most of the species, despite ... Article in Journal/Newspaper Salix herbacea Tundra Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) Journal of Mountain Science 17 9 2081 2096 |
institution |
Open Polar |
collection |
Università degli studi di Torino: AperTo (Archivio Istituzionale ad Accesso Aperto) |
op_collection_id |
ftunivtorino |
language |
English |
topic |
Alpine plant Climate change Growing degree day Italian Alp Salix herbacea Snowbed vegetation |
spellingShingle |
Alpine plant Climate change Growing degree day Italian Alp Salix herbacea Snowbed vegetation Quaglia E. Ravetto Enri S. Perotti E. Probo M. Lombardi G. Lonati M. Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod |
topic_facet |
Alpine plant Climate change Growing degree day Italian Alp Salix herbacea Snowbed vegetation |
description |
The study of plant phenology has frequently been used to link phenological events to various factors, such as temperature or photoperiod. In the high-alpine environment, proper timing of the phenological cycle has always been crucial to overcome harsh conditions and potential extreme events (i.e. spring frosts) but little is known about the response dynamics of the vegetation, which could shape the alpine landscape in a future of changing climate. Alpine tundra vegetation is composed by an array of species belonging to different phytosociological optima and with various survival strategies, and snowbed communities are a relevant expression of such an extreme-climate adapted flora. We set eight permanent plots with each one in a snowbed located on the Cimalegna plateau in Northwestern Italy and then we selected 10 most recurring species among our plots, all typical of the alpine tundra environment and classified in 3 different pools: snowbed specialists, grassland species and rocky debris species. For 3 years we registered the phenophases of each species during the whole growing season using an adaptation of the BBCH scale. We later focused on the three most biologically relevant phenophases, i.e., flower buds visible, full flowering, and beginning of seed dispersion. Three important season-related variables were chosen to investigate their relationship with the phenological cycle of the studied species: (i) the Day Of Year (DOY), the progressive number of days starting from the 1st of January, used as a proxy of photoperiod, (ii) Days From Snow Melt (DFSM), selected to include the relevance of the snow dynamics, and (iii) Growing Degree Days (GDD), computed as a thermal sum. Our analysis highlighted that phenological development correlated better with DFSM and GDD than with DOY. Indeed, models showed that DOY was always a worse predictor since it failed to overcome interannual variations, while DFSM and marginally GDD were better suited to predict the phenological development of most of the species, despite ... |
author2 |
Quaglia E. Ravetto Enri S. Perotti E. Probo M. Lombardi G. Lonati M. |
format |
Article in Journal/Newspaper |
author |
Quaglia E. Ravetto Enri S. Perotti E. Probo M. Lombardi G. Lonati M. |
author_facet |
Quaglia E. Ravetto Enri S. Perotti E. Probo M. Lombardi G. Lonati M. |
author_sort |
Quaglia E. |
title |
Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod |
title_short |
Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod |
title_full |
Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod |
title_fullStr |
Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod |
title_full_unstemmed |
Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod |
title_sort |
alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod |
publishDate |
2020 |
url |
http://hdl.handle.net/2318/1757067 https://doi.org/10.1007/s11629-020-6079-2 https://link.springer.com/article/10.1007/s11629-020-6079-2 |
genre |
Salix herbacea Tundra |
genre_facet |
Salix herbacea Tundra |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000561276200001 volume:17 issue:9 firstpage:2081 lastpage:2096 numberofpages:16 journal:JOURNAL OF MOUNTAIN SCIENCE http://hdl.handle.net/2318/1757067 doi:10.1007/s11629-020-6079-2 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-85089735911 https://link.springer.com/article/10.1007/s11629-020-6079-2 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1007/s11629-020-6079-2 |
container_title |
Journal of Mountain Science |
container_volume |
17 |
container_issue |
9 |
container_start_page |
2081 |
op_container_end_page |
2096 |
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1781705605189206016 |