Drought and stand susceptibility to attacks by the European spruce bark beetle: A remote sensing approach
NARDI, Davide
Università degli Studi di Padova = University of Padua [Unipd]
Fondazione Edmund Mach - Edmund Mach Foundation [Italie] [FEM]
CNR Istituto per la Protezione Sostenibile delle Piante [Torino, Italia] [IPSP]
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Università degli Studi di Padova = University of Padua [Unipd]
Fondazione Edmund Mach - Edmund Mach Foundation [Italie] [FEM]
CNR Istituto per la Protezione Sostenibile delle Piante [Torino, Italia] [IPSP]
NARDI, Davide
Università degli Studi di Padova = University of Padua [Unipd]
Fondazione Edmund Mach - Edmund Mach Foundation [Italie] [FEM]
CNR Istituto per la Protezione Sostenibile delle Piante [Torino, Italia] [IPSP]
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Università degli Studi di Padova = University of Padua [Unipd]
Fondazione Edmund Mach - Edmund Mach Foundation [Italie] [FEM]
CNR Istituto per la Protezione Sostenibile delle Piante [Torino, Italia] [IPSP]
Langue
en
Article de revue
Ce document a été publié dans
Agricultural and Forest Entomology. 2023-02, vol. 25, n° 1, p. 119-129
Wiley
Résumé en anglais
1. Several time-series analyses have demonstrated that after extreme summer drought bark beetle damage increased. However, studies predicting stand susceptibility over large spatial extents are limited by technical constraints ...Lire la suite >
1. Several time-series analyses have demonstrated that after extreme summer drought bark beetle damage increased. However, studies predicting stand susceptibility over large spatial extents are limited by technical constraints in obtaining detailed, spatially-explicit data on infestation spot occurrence. 2. Using a unique dataset of georeferenced bark beetle infestation data, we tested whether the spatial variation of local growing conditions of forest stands, topography, and landscape variables modified the local occurrence of Ips typographus infestations after a severe hot drought in Central Europe. 3. Bark beetle infestation occurrence depended on soil-related aridity intensity, elevation, slope, and soil conditions. We showed that elevation interacted with growing conditions and topography. At low elevations, spruce forests growing on flat areas and wetter soils were more sensitive to the infestations. On the contrary, forests on steep slopes and soils with low water availability were rarely attacked. At the landscape scale, bark beetle damage increased with host tree cover but decreased with compositional diversity. 4. Our findings are generally consistent with the growth-differentiation balance hypothesis that predicts that trees growing under chronic dry conditions tend to be more resistant against biotic disturbances. 5. Spruce stands at low elevations located in homogeneous landscapes dominated by spruce were those more exposed to bark beetles in the initial phase of a droughtinduced outbreak.< Réduire
Mots clés en anglais
aridity
dryness
Ips typographus
landscape diversity
topography
water limitation
Origine
Importé de halUnités de recherche