Tree growth is more limited by drought in rear-edge forests most of the times

作     者：J.Julio Camarero Antonio Gazol Gabriel Sangüesa-Barreda Marta Vergarechea Raquel Alfaro-Sánchez Nicolás Cattaneo Sergio M.Vicente-Serrano J.Julio Camarero;Antonio Gazol;Gabriel Sangüesa-Barreda;Marta Vergarechea;Raquel Alfaro-Sánchez;Nicolás Cattaneo;Sergio M.Vicente-Serrano

作者机构：Instituto Pirenaico de Ecología(IPE-CSIC)Avda.Montañana 1005E-50192 ZaragozaSpain Ei FAB-iu FORUniversity of ValladolidCampus Duques de SoriaE-42004 SoriaSpain NIBIONorwegian Institute of Bioeconomy ResearchPostboks 155NO-1431ÅsNorway Department of BiologyWilfrid Laurier UniversityN2L 3C575 Univ.Avenue WWaterlooOntarioCanada 

出 版 物：《Forest Ecosystems》 (森林生态系统（英文版）)

年 卷 期：2021年第8卷第2期

页      面：330-344页

核心收录：

学科分类：09[农学] 0903[农学-农业资源与环境] 

基　　金：funding by project RTI2018–096884-B-C31(Spanish Ministry of Science) G.S-B.is supported by a Spanish Ministry of Economy,Industry Competitiveness Postdoctoral grant(FJCI 2016–30121 FEDER funds) 

主　　题：Climate change Dendroecology Latitudinal gradient Mediterranean forests Standardized evapotranspiration precipitation index(SPEI) 

摘      要：Background:Equatorward,rear-edge tree populations are natural monitors to estimate species vulnerability to climate *** to biogeographical theory,exposition to drought events increases with increasing aridity towards the equator and the growth of southern tree populations will be more vulnerable to drought than in central ***,the ecological and biogeographical margins can mismatch due to the impact of ecological factors(topography,soils)or tree-species acclimation that can blur large-scale geographical imprints in trees responses to drought making northern populations more drought ***:We tested these ideas in six tree species,three angiosperms(Fagus sylvatica,Quercus robur,Quercus petraea)and three gymnosperms(Abies alba,Pinus sylvestris and Pinus uncinata)by comparing rear-edge tree populations subjected to different degrees of *** used dendrochronology to compare the radial-growth patterns of these species in northern,intermediate,and southern tree populations at the continental rear *** and conclusions:We found marked variations in growth variability between species with coherent patterns of stronger drought signals in the tree-ring series of the southern populations of ***,***,and *** was also observed in species from cool-wet sites(*** and ***),despite their limited responsiveness to ***,in the case of *** the intermediate population showed the strongest relationship to *** drought-sensitive species as *** and ***,southern populations presented more variable growth which was enhanced by cool-wet conditions from late spring to *** found a trend of enhanced vulnerability to drought in these two *** response of tree growth to drought has a marked biogeographical component characterized by increased drought sensitivity in southern populations even within the species distribution rear ***,the relationship