globalchange  > 影响、适应和脆弱性
DOI: 10.1111/gcb.13360
论文题名:
Bud break responds more strongly to daytime than night-time temperature under asymmetric experimental warming
作者: Rossi S.; Isabel N.
刊名: Global Change Biology
出版年: 2017
卷: 23, 期:1
起始页码: 446
结束页码: 454
语种: 英语
英文关键词: bud burst ; climate change ; ecotype ; maximum temperature ; minimum temperature ; phenology ; Picea mariana
Scopus关键词: budburst ; climate change ; coniferous tree ; ecotype ; global warming ; phenology ; temperature ; Canada ; Picea mariana
英文摘要: Global warming is diurnally asymmetric, leading to a less cold, rather than warmer, climate. We investigated the effects of asymmetric experimental warming on plant phenology by testing the hypothesis that daytime warming is more effective in advancing bud break than night-time warming. Bud break was monitored daily in Picea mariana seedlings belonging to 20 provenances from Eastern Canada and subjected to daytime and night-time warming in growth chambers at temperatures varying between 8 and 16 °C. The higher advancements of bud break and shorter times required to complete the phenological phases occurred with daytime warming. Seedlings responded to night-time warming, but still with less advancement of bud break than under daytime warming. No advancement was observed when night-time warming was associated with a daytime cooling. The effect of the treatments was uniform across provenances. Our observations realized under controlled conditions allowed to experimentally demonstrate that bud break can advance under night-time warming, but to a lesser extent than under daytime warming. Prediction models using daily timescales could neglect the diverging influence of asymmetric warming and should be recalibrated for higher temporal resolutions. © 2016 John Wiley & Sons Ltd
资助项目: Rossi, S. ; Département des Sciences Fondamentales, Université du Québec à Chicoutimi, 555 boulevard de l'Université, Canada ; 电子邮件: sergio.rossi@uqac.ca
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/61119
Appears in Collections:影响、适应和脆弱性

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作者单位: Département des Sciences Fondamentales, Université du Québec à Chicoutimi, 555 boulevard de l'Université, Chicoutimi, QC, Canada; Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe District, Guangzhou, China; Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, 723 Xingke Road, Tianhe District, Guangzhou, China; Natural Resources Canada, Canadian Forest Service, Laurentian Forestry Centre, 1055 rue du P.E.P.S., Québec, QC, Canada

Recommended Citation:
Rossi S.,Isabel N.. Bud break responds more strongly to daytime than night-time temperature under asymmetric experimental warming[J]. Global Change Biology,2017-01-01,23(1)
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