000089567 001__ 89567
000089567 005__ 20230622083310.0
000089567 0247_ $$2doi$$a10.3389/ffgc.2020.00036
000089567 0248_ $$2sideral$$a117677
000089567 037__ $$aART-2020-117677
000089567 041__ $$aeng
000089567 100__ $$aGazol, A.
000089567 245__ $$aForecasting Forest Vulnerability to Drought in Pyrenean Silver Fir Forests Showing Dieback
000089567 260__ $$c2020
000089567 5060_ $$aAccess copy available to the general public$$fUnrestricted
000089567 5203_ $$aForest dieback is manifested as widespread loss of tree vigor, growth decline and high mortality rates. Forest dieback is becoming increasingly frequent and extended, particularly in drought-prone regions. This is the case of the south-western Spanish Pyrenees, where keystone species such as Silver fir reach their xeric and southern distribution limits. While dieback of this species has been widely documented in this area, we still lack methodologies to forecast the vulnerability of these forests in response to increasing drought stress so as to anticipate their potential dieback in the future. Here we study multiple features of Silver fir forests and trees to evaluate whether previous growth rates and their growth trends are valid predictors of forest dieback. Further, we validate our methodology revisiting two Silver fir sites sampled two decades ago. The defoliation degree was strongly related with radial growth, and growth trends differed between moderately to highly defoliated trees and non-defoliated trees. Forests showing dieback, i.e., those in which 25% of the sampled trees showed defoliation > 50%, were located at low elevation and received less rainfall in summer than forests showing no dieback. Trees showing high defoliation presented lower growth rates than non-defoliated trees. Moreover, we ratified that defoliation has increased considerably over the last two decades in one of the two revisited sites, but we were unable to accurately forecast growth trends in both sites, particularly in the site not showing dieback. The retrospective assessment of growth rates and trends offers valuable information on the vulnerability of Silver fir trees to drought. However, we are still far from being able to forecast the vulnerability of Silver fir forests to increasing drought. A systematic monitoring of growth across a wide tree-ring network of sites might provide valuable information to advance in this direction.
000089567 536__ $$9info:eu-repo/grantAgreement/ES/MCIU/CGL2015-69186-C2-1-R$$9info:eu-repo/grantAgreement/ES/MCIU/RTI2018-096884-B-C31
000089567 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000089567 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000089567 700__ $$aSanguesa-Barreda, G.
000089567 700__ $$0(orcid)0000-0003-2436-2922$$aCamarero, J.J.
000089567 773__ $$g3, UNSP 36 (2020), [13 pp]$$pFront. for. glob. change$$tFrontiers in forests and global change$$x2624-893X
000089567 8564_ $$s503914$$uhttps://zaguan.unizar.es/record/89567/files/texto_completo.pdf$$yVersión publicada
000089567 8564_ $$s475853$$uhttps://zaguan.unizar.es/record/89567/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000089567 909CO $$ooai:zaguan.unizar.es:89567$$particulos$$pdriver
000089567 951__ $$a2023-06-21-14:59:34
000089567 980__ $$aARTICLE