气候变化领域集成服务门户(CCPortal): Phenological Differentiation in Sugar Maple Populations and Responses of Bud Break to an Experimental Warming

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DOI	10.3390/f11090929
	Phenological Differentiation in Sugar Maple Populations and Responses of Bud Break to an Experimental Warming
	Ren, Ping; Liang, Eryuan; Raymond, Patricia; Rossi, Sergio
通讯作者	Ren, P (通讯作者)
发表日期	2020
EISSN	1999-4907
卷号	11 期号:9
英文摘要	Species with wide geographical ranges exhibit specific adaptations to local climates, which may result in diverging responses among populations to changing conditions. Climate change has advanced spring phenology worldwide, but questions of whether and how the phenological responses to warming differ among individuals across the natural range of a species remain. We conducted two experiments in January and April 2019, and performed daily observations of the timings of bud break in 1-year-old seedlings of sugar maple (Acer saccharumMarshall) from 25 Canadian provenances at two thermal conditions (14/10 and 18/14 degrees C day/night temperature) in a controlled environment. Overall, bud break started 6 days from the beginning of the experiments and finished after 125 days. The earlier events were observed in seedlings originating from the colder sites. Bud break was delayed by 4.8 days per additional degree Celsius in the mean annual temperature at the origin site. Warming advanced the timing of bud break by 17-27 days in January and by 3-8 days in April. Similar advancements in bud break were observed among provenances under warming conditions, which rejected our hypothesis that sugar maple populations have different phenological responses to warming. Our findings confirm the differentiation in ecotypes for the process of bud break in sugar maple. In cases of homogenous spring warming across the native range of sugar maple, similar advancements in bud phenology can be expected in different populations.
关键词	SPRING PHENOLOGY LEAF PHENOLOGY SPECIES RESPONSES MODELING ANALYSIS GENETIC-VARIATION SENSITIVITY TEMPERATURE
英文关键词	Acer saccharum; bud burst; climate change; ecotype; growth chamber; phenology; temperature
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:000580152200001
来源期刊	FORESTS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259973
推荐引用方式 GB/T 7714	Ren, Ping,Liang, Eryuan,Raymond, Patricia,et al. Phenological Differentiation in Sugar Maple Populations and Responses of Bud Break to an Experimental Warming[J]. 中国科学院青藏高原研究所,2020,11(9).
APA	Ren, Ping,Liang, Eryuan,Raymond, Patricia,&Rossi, Sergio.(2020).Phenological Differentiation in Sugar Maple Populations and Responses of Bud Break to an Experimental Warming.FORESTS,11(9).
MLA	Ren, Ping,et al."Phenological Differentiation in Sugar Maple Populations and Responses of Bud Break to an Experimental Warming".FORESTS 11.9(2020).