气候变化领域集成服务门户(CCPortal): Unravelling the biogeographic determinants of tree growth sensitivity to freeze and drought in Canada's forests

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DOI	10.1111/1365-2745.14275
	Unravelling the biogeographic determinants of tree growth sensitivity to freeze and drought in Canada's forests
	Girardin, Martin P.; Guo, Xiao Jing; Marchand, William; Depardieu, Claire
发表日期	2024
ISSN	0022-0477
EISSN	1365-2745
起始页码	112
结束页码	4
卷号	112 期号:4
英文摘要	The evolutionary dynamics of tree species are influenced by their specific climatic environments, and their ability to persist is determined by adaptive strategies such as broad climate tolerance, phenotypic plasticity or genetic differentiation. Biogeographical predictions indicate that populations located at the edges of their ranges are more likely to experience heightened vulnerability to climatic fluctuations due to approaching tolerance limits. However, if local phenotypic acclimation or genetic adaptation has taken place, trees near the edge of their range could demonstrate comparable sensitivity to freeze and drought as the rest of the sampled population. Nevertheless, there remains uncertainty regarding the extent of developmental and evolutionary adjustments in climate sensitivity across the entire ranges of many tree species. Here, we document the biogeography of tree growth sensitivity to freeze and soil water and vapour pressure deficits during 1950-2018 using an extensive multi-species tree-ring dataset of 35,784 trees at 4535 sites covering boreal, temperate conifer and temperate deciduous forests of Canada. We quantify the relationships between tree radial growth increment and seasonal climate variables and explore factors driving the observed patterns of annual growth and climate sensitivity such as species, regional climate and local site conditions, and tree age and size. Freeze and drought had widespread impacts on tree growth that were contingent on the presence of focal species in interaction with tree size. An indirect growth thermal limitation towards cold/wet edges, occurring through the site moisture conditions, was observed in seven widespread species (e.g. Picea glauca, Picea mariana and Larix laricina). Moreover, six species had negative drought impacts more strongly expressed towards their warm/dry edges (e.g. Abies balsamea, Betula papyrifera and Pseudotsuga menziesii). However, widespread Picea, Pinus and Populus species showed no indication of increased sensitivity to soil water conditions at these edges. Synthesis. Our findings support the idea of evolutionary or acclimatization adjustments in the development of populations in response to long-term climate conditions experienced in their respective locations. This underscores the importance of incorporating phenotypic and genomic data into future analyses of climate change impacts, which would enhance our ability to predict potential ecological shifts. Les dynamiques evolutives des especes arborescentes sont influencees par leurs environnements climatiques specifiques, et leur capacite a persister est determinee par des strategies adaptatives telles que la tolerance climatique etendue, la plasticite phenotypique ou la differenciation genetique. Les predictions biogeographiques indiquent que les populations situees aux limites de leurs aires sont plus susceptibles de connaitre une vulnerabilite accrue aux fluctuations climatiques en raison de l'approche des limites de tolerance. Cependant, si une acclimatation phenotypique locale ou une adaptation genetique a eu lieu, les arbres pres de la limite de leur aire pourraient presenter une sensibilite comparable au gel et a la secheresse par rapport au reste de la population echantillonnee. Neanmoins, des incertitudes subsistent quant a l'etendue des ajustements developpementaux et evolutifs de la sensibilite au climat sur l'ensemble des aires de nombreuses especes arborescentes. Ici, nous documentons la biogeographie de la sensibilite a la croissance des arbres au gel et aux deficits en eau du sol et de la pression de vapeur pendant la periode de 1950 a 2018 en utilisant un ensemble de donnees etendu sur les cernes de croissance de 35,784 arbres appartenant a 4535 sites couvrant les forets boreales, coniferiennes temperees et decidues temperees du Canada. Nous quantifions les relations entre l'accroissement radial des arbres et les variables climatiques saisonnieres, et explorons les facteurs qui influent sur les modeles observes de croissance annuelle et de sensibilite au climat, tels que l'espece, le climat regional et les conditions locales du site, ainsi que l'age et la taille des arbres. Le gel et la secheresse ont eu des impacts etendus sur la croissance des arbres, dependant de la presence d'especes focales en interaction avec la taille des arbres. Une limitation thermique indirecte de la croissance vers les marges froides/humides, se produisant a travers les conditions d'humidite du site, a ete observee chez sept especes repandues (par exemple, Picea glauca, Picea mariana, Larix laricina). De plus, six especes ont subi des impacts negatifs de la secheresse plus fortement exprimes vers leurs marges chaudes/seches (par exemple, Abies balsamea, Betula papyrifera, Pseudotsuga menziesii). Cependant, les especes repandues de Picea, Pinus et Populus n'ont montre aucune indication d'une sensibilite accrue aux conditions d'eau du sol a ces marges. Synthese. Nos resultats appuient l'idee d'ajustements evolutifs ou d'acclimatation dans le developpement des populations en reponse aux conditions climatiques a long terme rencontrees dans leurs emplacements respectifs. Cela souligne l'importance d'incorporer des donnees phenotypiques et genomiques dans les analyses futures des impacts du changement climatique, ce qui ameliorerait notre capacite a predire d'eventuels changements ecologiques. The authors document spatial variations in tree growth sensitivity to freeze and soil moisture and vapour pressure deficits in Canada. They utilize an extensive multi-species tree-ring dataset to create maps representing the strength of relationships (t) between tree basal area increments and these factor for the period 1951-2018, with red indicating areas where high values of the specified variable have a negative impact on tree growth, and blue indicating areas where high values favour tree growth. Their primary focus was on understanding how these climate sensitivities vary smoothly based on the mean annual temperature and mean annual precipitation covariates. The authors' hypothesis posits that the effects of these covariates are noticeable at the cold/wet and warm/dry edges of the tree species' sample distributions.image
英文关键词	conifers; dendrochronology; frost; hardwoods; soil moisture; tree-rings; vapour pressure deficit; water stress
语种	英语
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
WOS类目	Plant Sciences ; Ecology
WOS记录号	WOS:001180651500001
来源期刊	JOURNAL OF ECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/306899
作者单位	Natural Resources Canada; Canadian Forest Service; University of Quebec; University of Quebec Montreal; Laval University; Laval University
推荐引用方式 GB/T 7714	Girardin, Martin P.,Guo, Xiao Jing,Marchand, William,et al. Unravelling the biogeographic determinants of tree growth sensitivity to freeze and drought in Canada's forests[J],2024,112(4).
APA	Girardin, Martin P.,Guo, Xiao Jing,Marchand, William,&Depardieu, Claire.(2024).Unravelling the biogeographic determinants of tree growth sensitivity to freeze and drought in Canada's forests.JOURNAL OF ECOLOGY,112(4).
MLA	Girardin, Martin P.,et al."Unravelling the biogeographic determinants of tree growth sensitivity to freeze and drought in Canada's forests".JOURNAL OF ECOLOGY 112.4(2024).