000133465 001__ 133465
000133465 005__ 20260217205512.0
000133465 0247_ $$2doi$$a10.1016/j.dendro.2024.126197
000133465 0248_ $$2sideral$$a138150
000133465 037__ $$aART-2024-138150
000133465 041__ $$aeng
000133465 100__ $$aHoudas, Hermine
000133465 245__ $$aPine processionary moth outbreaks and droughts have different tree ring signatures in Mediterranean pines
000133465 260__ $$c2024
000133465 5060_ $$aAccess copy available to the general public$$fUnrestricted
000133465 5203_ $$aDefoliating insects’ outbreaks play a critical role in trees’ carbon cycle. The pine processionary moth (PPM; Thaumetopoea pityocampa) is the major defoliating insect of Mediterranean coniferous forests. The frequency and intensity of PPM outbreaks is projected to increase as winter temperatures become milder due to climate warming. An accurate evaluation of this projection requires a wide spatial baseline of the historical PPM incidence. PPM outbreaks affect tree secondary growth leading to narrow rings, providing a tree level signal. However, PPM defoliation rings can be confounded with drought rings, the most frequent cause of narrow rings in Mediterranean environments. Thus, an accurate identification of PPM rings demands the consideration of additional tree ring traits. Here, we introduce a multiproxy approach to identify and distinguish PPM and drought events. We sampled four Pinus nigra (3) and P. sylvestris (1) stands in Spain. We identified and verified years of PPM defoliation using remote sensing analysis and field observations of Regional Forest Service. We identified drought events through the combination of climatic data with radial growth reductions. We considered climate growth residuals, among-trees growth variability, latewood percentage (%LW), intrinsic water-use efficiency (iWUE) and minimum blue intensity (BI) to discern between droughts and PPM outbreaks. In comparison with drought rings, PPM rings showed 1) more negative residuals in climate growth models, 2) higher secondary growth variance, 3) higher percentage of latewood and 4) lower iWUE. Minimum BI did not differ between drought and PPM rings, but was lower than in the rest of the rings. The combination of these traits provides a signature to identify PPM rings, opening the opportunity to reconstruct PPM incidence on a broad spatio-temporal scale.
000133465 536__ $$9info:eu-repo/grantAgreement/ES/MCIU/PID2020-118444GA-I00$$9info:eu-repo/grantAgreement/ES/NextGenerationEU/MS-240621
000133465 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttps://creativecommons.org/licenses/by-nc/4.0/deed.es
000133465 590__ $$a2.3$$b2024
000133465 592__ $$a0.844$$b2024
000133465 591__ $$aGEOGRAPHY, PHYSICAL$$b33 / 67 = 0.493$$c2024$$dQ2$$eT2
000133465 593__ $$aPlant Science$$c2024$$dQ1
000133465 591__ $$aFORESTRY$$b28 / 92 = 0.304$$c2024$$dQ2$$eT1
000133465 593__ $$aEcology$$c2024$$dQ1
000133465 594__ $$a5.2$$b2024
000133465 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000133465 700__ $$aOlano, José Miguel
000133465 700__ $$aHernández-Alonso, Héctor
000133465 700__ $$aGómez, Cristina
000133465 700__ $$aGarcía-Hidalgo, Miguel
000133465 700__ $$0(orcid)0000-0002-8362-7559$$aDomingo, Darío
000133465 700__ $$aDelgado-Huertas, Antonio
000133465 700__ $$aSangüesa-Barreda, Gabriel
000133465 773__ $$g85 (2024), 126197 [14 pp.]$$pDendrochronologia$$tDENDROCHRONOLOGIA$$x1125-7865
000133465 8564_ $$s8547413$$uhttps://zaguan.unizar.es/record/133465/files/texto_completo.pdf$$yVersión publicada
000133465 8564_ $$s2353116$$uhttps://zaguan.unizar.es/record/133465/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000133465 909CO $$ooai:zaguan.unizar.es:133465$$particulos$$pdriver
000133465 951__ $$a2026-02-17-20:25:27
000133465 980__ $$aARTICLE