damage on tree after the european spruce bark beetle ips typographus. european spruce bark beetle calamity in tatra.spruce bark

acid background bark beetle beetles blue calamity climate coniferous czech damage danger dead death deforestation disaster drought ecology environment environmental europe european forest forests germany green high infested insect ips kill landscape mountain mountains national natural nature old park pest pollution republic sky slovakian spruce summer tatra tatras tatry tree trees typographus wood aiexcl umava