气候变化领域集成服务门户(CCPortal): Biotic factors and increasing aridity shape the altitudinal shifts of marginal Pyrenean silver fir populations in Europe

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DOI	10.1016/j.foreco.2018.09.037
	Biotic factors and increasing aridity shape the altitudinal shifts of marginal Pyrenean silver fir populations in Europe
	Hernández L.; Camarero J.J.; Gil-Peregrín E.; Saz Sánchez M.Á.; Cañellas I.; Montes F.
发表日期	2019
ISSN	0378-1127
起始页码	558
结束页码	567
卷号	432
英文摘要	Rear-edge tree populations are currently at the forefront of habitat conservation. Understanding the dynamics of such marginal and peripheral populations is necessary to improve their preservation in the face of global change. Focusing on the south-western rear edge populations of silver fir (Abies alba) in Europe (Spanish Pyrenees) and using 763 resampled plots from the Spanish National Forest Inventory (1989–2000 and 2001–2010), we analyzed temporal changes in demographic parameters such as regeneration, growth and mortality as well as changes in diameter distribution and vitality of silver fir to identify shifts in the distribution. For this purpose, montane (900–1600 m a.s.l.) and subalpine (1600–2000 m a.s.l.) silver fir populations were considered separately. We then assessed the relative effects of various biotic and abiotic factors on the observed changes and specifically on each of the studied demographic parameters. In montane forests, early recruitment and the proportion of trees exhibiting high vitality decreased, while the amount of dead trees increased. In subalpine forests, silver fir has become more abundant and displays the highest growth and recruitment rates as well as the lowest mortality rate. The increase in radial growth and saplings were positively related to elevation but negatively associated with warmer and drier conditions, coinciding with the intensified aridification observed in the study area over recent decades. Our findings point to the contraction of montane silver fir forests but also to an upward expansion of subalpine forests. The results also indicate that the dynamics of marginal tree populations are driven not only by climate warming, but particularly, by biotic factors, suggesting a positive impact of interspecific interactions with tree species displaying differentiated ecophysiological traits. Given the singularity of marginal Pyrenean silver fir populations, their importance as regards the conservation of forest biodiversity at European scale, and the demographic changes revealed in this study, an integral conservation strategy to ensure their long-term preservation is necessary. © 2018 Elsevier B.V.
英文关键词	Abies alba; Biotic interactions; Climate change; Conservation planning; Demography; Pyrenees; Range shifts; Rear edge
语种	英语
scopus关键词	Biodiversity; Climate change; Conservation; Population dynamics; Reforestation; Silver; Abies alba; Biotic interactions; Conservation planning; Demography; Pyrenees; RANGE shifts; Rear edges; Population statistics; aridification; aridity; biodiversity; biotic factor; climate change; coniferous forest; coniferous tree; conservation planning; conservation status; demography; ecophysiology; edge effect; environmental factor; global change; growth; habitat conservation; interspecific interaction; range expansion; recruitment (population dynamics); Abies Alba; Biodiversity; Conservation; Forests; Reforestation; Silver; Europe; Pyrenees; Abies; Abies alba
来源期刊	Forest Ecology and Management
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156362
作者单位	INIA-CIFOR, Silviculture and Forest Management Department, Madrid, Spain; Instituto Pirenaico de Ecología (IPE-CSIC), Avda. Montañana 1005, Zaragoza, 50059, Spain; Unidad de Recursos Forestales, Centro de Investigación y Tecnología Agroalimentaria de Aragón, Gobierno de Aragón, Zaragoza, 50059, Spain; Departamento de Geografía y Ordenación del Territorio, Área de Análisis Geográfico Regional Instituto Universitario de Ciencias Ambientales, Universidad de Zaragoza, Pedro Cerbuna 1250009, Spain
推荐引用方式 GB/T 7714	Hernández L.,Camarero J.J.,Gil-Peregrín E.,et al. Biotic factors and increasing aridity shape the altitudinal shifts of marginal Pyrenean silver fir populations in Europe[J],2019,432.
APA	Hernández L.,Camarero J.J.,Gil-Peregrín E.,Saz Sánchez M.Á.,Cañellas I.,&Montes F..(2019).Biotic factors and increasing aridity shape the altitudinal shifts of marginal Pyrenean silver fir populations in Europe.Forest Ecology and Management,432.
MLA	Hernández L.,et al."Biotic factors and increasing aridity shape the altitudinal shifts of marginal Pyrenean silver fir populations in Europe".Forest Ecology and Management 432(2019).