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    Por favor, use este identificador para citar o enlazar este ítem:https://uvadoc.uva.es/handle/10324/72944

    Título
    Pine processionary moth outbreaks and droughts have different tree ring signatures in Mediterranean pines
    Autor
    Houdas, Hermine JoséphineAutoridad UVA Orcid
    Olano Mendoza, José MiguelAutoridad UVA Orcid
    Hernández Alonso, Héctor
    Gómez Almaraz, CristinaAutoridad UVA Orcid
    García Hidalgo, MiguelAutoridad UVA Orcid
    Domingo Ruiz, DaríoAutoridad UVA Orcid
    Delgado Huertas, Antonio
    Sangüesa Barreda, GabrielAutoridad UVA Orcid
    Año del Documento
    2024
    Editorial
    Elsevier
    Descripción
    Producción Científica
    Documento Fuente
    Dendrochronologia, junio 2024, vol. 85, 126197
    Zusammenfassung
    Defoliating 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.
    Materias Unesco
    3106 Ciencia Forestal
    Palabras Clave
    Blue intensity
    Drought
    Insect defoliations
    Latewood
    Stable isotopes
    Tree growth
    ISSN
    1125-7865
    Revisión por pares
    SI
    DOI
    10.1016/j.dendro.2024.126197
    Patrocinador
    Ministerio de Ciencia, Innovación y Universidades/AEI (PID2020–118444GA-I00, PRE2021–098278, IJC2019–040571-I)
    Junta de Castilla y León/FEDER (VA171P20)
    Unión Europea Next Generation EU Margarita Salas (MS-240621)
    Version del Editor
    https://www.sciencedirect.com/science/article/pii/S1125786524000341
    Propietario de los Derechos
    © 2024 The Author(s)
    Idioma
    eng
    URI
    https://uvadoc.uva.es/handle/10324/72944
    Tipo de versión
    info:eu-repo/semantics/publishedVersion
    Derechos
    openAccess
    Aparece en las colecciones
    • DEP08 - Artículos de revista [82]
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    dendro85_pine-processionary-moth-outbreak-droughts-different-tree-rings.pdf
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