000110822 001__ 110822
000110822 005__ 20230519145615.0
000110822 0247_ $$2doi$$a10.1016/j.agrformet.2021.108634
000110822 0248_ $$2sideral$$a127476
000110822 037__ $$aART-2021-127476
000110822 041__ $$aeng
000110822 100__ $$aLópez, Rosana
000110822 245__ $$aTree-ring density and carbon isotope composition are early-warning signals of drought-induced mortality in the drought tolerant Canary Island pine
000110822 260__ $$c2021
000110822 5060_ $$aAccess copy available to the general public$$fUnrestricted
000110822 5203_ $$aTree death is not always preceded by a visible decline in vigor (canopy dieback) or a progressive loss in crown volume. Identifying early-warning signals of incipient decline can help to implement the necessary measures to prevent tree death. The aim of this work is to understand what functional alterations preceded the massive drought-induced death of adult Pinus canariensis trees in an arid stand, located in the Canary Islands. To this aim, we analyzed interannual variations in earlywood and latewood width, wood density and anatomy, and carbon isotope composition, and the relationships among these variables, in dead and living trees from 1980 to 2013. Dead trees grew less since the 1990's, produced fewer parenchyma rays and resin canals, and exhibited a trend of decreasing latewood density and a marked shift in carbon isotope discrimination over the last 34 years that were reversed in living trees. Higher wood density in living trees resulted from thicker tracheid cell walls rather than narrower lumens. The intrinsic water use efficiency shifted from higher to lower values in dead trees after the 2000s. These results suggest a carbon limitation to maintain hydraulic safety under xylem tension, as well as to maintain storage and defense capacity, which can render trees more vulnerable to severe drought episodes. A long-term trend of decreasing tree-ring density and a reduced intrinsic water use efficiency in the short-term can be early-warning signals of carbon limitation and tree decline in drought-stressed P. canariensis. The analysis of these variables can be used to assess tree decline risks in similarly vulnerable conifer populations inhabiting drought-prone regions.
000110822 536__ $$9info:eu-repo/grantAgreement/ES/MICINN/AGL2009-10606
000110822 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttp://creativecommons.org/licenses/by/3.0/es/
000110822 590__ $$a6.424$$b2021
000110822 592__ $$a1.719$$b2021
000110822 594__ $$a10.6$$b2021
000110822 591__ $$aAGRONOMY$$b7 / 90 = 0.078$$c2021$$dQ1$$eT1
000110822 593__ $$aAgronomy and Crop Science$$c2021$$dQ1
000110822 591__ $$aMETEOROLOGY & ATMOSPHERIC SCIENCES$$b17 / 94 = 0.181$$c2021$$dQ1$$eT1
000110822 593__ $$aGlobal and Planetary Change$$c2021$$dQ1
000110822 591__ $$aFORESTRY$$b2 / 70 = 0.029$$c2021$$dQ1$$eT1
000110822 593__ $$aAtmospheric Science$$c2021$$dQ1
000110822 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000110822 700__ $$aCano, Francisco Javier
000110822 700__ $$aRodríguez Calcerrada, Jesús
000110822 700__ $$aSangüesa Barreda, Gabriel
000110822 700__ $$aGazol, Antonio
000110822 700__ $$0(orcid)0000-0003-2436-2922$$aCamarero, J.Julio
000110822 700__ $$aRozenberg, Philippe
000110822 700__ $$aGil, Luis
000110822 773__ $$g310 (2021), 108634 [14 pp.]$$pAgric. for. meteorol.$$tAGRICULTURAL AND FOREST METEOROLOGY$$x0168-1923
000110822 8564_ $$s4572465$$uhttps://zaguan.unizar.es/record/110822/files/texto_completo.pdf$$yVersión publicada
000110822 8564_ $$s2568962$$uhttps://zaguan.unizar.es/record/110822/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000110822 909CO $$ooai:zaguan.unizar.es:110822$$particulos$$pdriver
000110822 951__ $$a2023-05-18-16:10:45
000110822 980__ $$aARTICLE