摘要
•The relationships between resources and defenses in dead trees are poorly understood.•We measured the changes in constitutive and induced defenses of uprooted spruces.•Constitutive and induced terpenes don’t influence bark beetles’ selection and success.•Defense levels decrease and are positively correlated to phloem’s energetic content.•Wind-felled trees are poorly defended but allow the reproduction of I. typographus.