Some reactions of Ips typographus (L.) (Col.: Scolytidae) to changing breeding conditions in a forest decline area in the Sudeten Mountains, Poland

@article{Grodzki2003SomeRO,
  title={Some reactions of Ips typographus (L.) (Col.: Scolytidae) to changing breeding conditions in a forest decline area in the Sudeten Mountains, Poland},
  author={Wojciech Grodzki},
  journal={Journal of Pest Science},
  year={2003},
  volume={77},
  pages={43-48}
}
Investigations on I. typographus populations were conducted in 1992–1994 in the Sudeten (south-western Poland), in Norway spruce stands that were devastated previously by insect outbreaks and that exhibited severe forest decline. Crown defoliation and the volume of infested trees per hectare were used as indices of stand health and breeding conditions; variability in the infestation density, gallery length, and body length of beetles were parameters that were used to estimate the response of I… CONTINUE READING