| DOI: | 10.1111/gcb.12360
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| 论文题名: | Chilling outweighs photoperiod in preventing precocious spring development |
| 作者: | Laube J.; Sparks T.H.; Estrella N.; Höfler J.; Ankerst D.P.; Menzel A.
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| 刊名: | Global Change Biology
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| ISSN: | 13541013
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| 出版年: | 2014
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| 卷: | 20, 期:1 | | 起始页码: | 170
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| 结束页码: | 182
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| 语种: | 英语
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| 英文关键词: | Asynchrony
; Budburst
; Climate chamber experiment
; Climate change
; Dormancy
; Invasive species
; Phenology
; Photosensitivity
; Successional strategy
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| Scopus关键词: | climate change
; dormancy
; forest ecosystem
; invasive species
; phenology
; photoperiod
; succession
; temperature effect
; winter
; article
; asynchrony
; budburst
; climate chamber experiment
; climate change
; cold
; dormancy
; growth, development and aging
; introduced species
; invasive species
; phenology
; photoperiodicity
; photosensitivity
; plant development
; season
; successional strategy
; tree
; asynchrony
; budburst
; climate chamber experiment
; climate change
; dormancy
; invasive species
; phenology
; photosensitivity
; successional strategy
; Cold Temperature
; Introduced Species
; Photoperiod
; Plant Development
; Seasons
; Trees
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| 英文摘要: | It is well known that increased spring temperatures cause earlier onset dates of leaf unfolding and flowering. However, a temperature increase in winter may be associated with delayed development when species' chilling requirements are not fulfilled. Furthermore, photosensitivity is supposed to interfere with temperature triggers. To date, neither the relative importance nor possible interactions of these three factors have been elucidated. In this study, we present a multispecies climate chamber experiment to test the effects of chilling and photoperiod on the spring phenology of 36 woody species. Several hypotheses regarding their variation with species traits (successional strategy, floristic status, climate of their native range) were tested. Long photoperiods advanced budburst for one-third of the studied species, but magnitudes of these effects were generally minor. In contrast to prior hypotheses, photosensitive responses were not restricted to climax or oceanic species. Increased chilling length advanced budburst for almost all species; its effect greatly exceeding that of photoperiod. Moreover, we suggest that photosensitivity and chilling effects have to be rigorously disentangled, as the response to photoperiod was restricted to individuals that had not been fully chilled. The results indicate that temperature requirements and successional strategy are linked, with climax species having higher chilling and forcing requirements than pioneer species. Temperature requirements of invasive species closely matched those of native species, suggesting that high phenological concordance is a prerequisite for successful establishment. Lack of chilling not only led to a considerable delay in budburst but also caused substantial changes in the chronological order of species' budburst. The results reveal that increased winter temperatures might impact forest ecosystems more than formerly assumed. Species with lower chilling requirements, such as pioneer or invasive species, might profit from warming winters, if late spring frost events would in parallel occur earlier. © 2013 John Wiley & Sons Ltd. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/62221
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| Appears in Collections: | 影响、适应和脆弱性
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作者单位: | Technische Universität München, Hans-Carl-von-Carlowitz-Platz 2, Freising, 85354, Germany; Institute for Advanced Study, Technische Universität München, Lichtenbergstrasse 2a, Garching, 85748, Germany; Sigma, Coventry University, Priory Street, Coventry, CV1 5FB, United Kingdom; Technische Universität München, Parkring 13, Garching-Hochbrück, 85748, Germany
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| Recommended Citation: | |
Laube J.,Sparks T.H.,Estrella N.,et al. Chilling outweighs photoperiod in preventing precocious spring development[J]. Global Change Biology,2014-01-01,20(1)
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