Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod
文献类型：期刊论文
| 作者 | Quaglia, Elena; Ravetto Enri, Simone; Perotti, Elisa; Probo, Massimiliano; Lombardi, Giampiero; Lonati, Michele |
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2020 |
| 卷号 | 17期号:9页码:2081-2096 |
| 关键词 | Alpine plants Climate change Growing degree days Italian Alps Salix herbacea Snowbed vegetation |
| ISSN号 | 1672-6316 |
| DOI | 10.1007/s11629-020-6079-2 |
| 文献子类 | Article |
| 英文摘要 | 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 1(st)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 differences in temperature and snowmelt date among the three years. Even if the response pattern to the three variables was mainly consistent for all the species, the timing of their phenological response was different. Indeed, species such asSalix herbaceaandRanunculus glacialiswere always earlier in the achievement of the phenophases, whileAgrostis rupestrisandEuphrasia minimadeveloped later and the remaining species showed an intermediate behavior. However, we did not detect significant differences among the three functional pools of species. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| WOS记录号 | WOS:000561276200001 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/50481]  |
| 专题 | Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.9 |
| 推荐引用方式 GB/T 7714 | Quaglia, Elena,Ravetto Enri, Simone,Perotti, Elisa,et al. Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(9):2081-2096. |
| APA | Quaglia, Elena,Ravetto Enri, Simone,Perotti, Elisa,Probo, Massimiliano,Lombardi, Giampiero,&Lonati, Michele.(2020).Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod.JOURNAL OF MOUNTAIN SCIENCE,17(9),2081-2096. |
| MLA | Quaglia, Elena,et al."Alpine tundra species phenology is mostly driven by climate-related variables rather than by photoperiod".JOURNAL OF MOUNTAIN SCIENCE 17.9(2020):2081-2096. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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