The paper describes proposed procedures for calculating the optimal number and locations of monitoring traps for the purpose of population density monitoring, monitoring logs and trap settings for the control of European spruce bark beetle, Ips typographus (Linnaeus, 1758).
COBISS.SI-ID: 43787523
Based on the proposed procedures for determining the optimal number and locations of control-hunting traps, control-hunting settings and hunting settings for the European spruce bark beetle (Ips typographus), we prepared a proposal of the number and locations of control-hunting traps and control-hunting settings in 2021. In most of the 8 × 8 km cells, an attack of spruce beetles was recorded in 2020. Therefore, the procedure did not envisage any regular monitoring traps in 2021. However, the procedure also envisages a minimum number of permanent monitoring traps, the location of which does not change and are monitored every year from March to October every 7 days. At least one permanent control-hunting trap is planned for one local unit of the Slovenian Forest Service, ie. 64 permanent control-hunting traps. According to the proposed procedure, the control-hunting settings of the I. series would be placed in 111 model cells. We have identified several shortcomings in the implementation of the procedures and in this paper we propose to supplement them: a) We propose at least 266 permanent control and hunting traps, ie. one control-hunting trap per model cell where the spruce occurs; b) Deletion of the procedure for calculating regular control traps; c) Add an improvement to both monitoring and trap logs to remove areas around foci with a radius of 1 km from the identified model cells; d) Supplement the procedure for a more accurate calculation of the number of settings in the model cell by adjusting the number of settings to the proportional share of spruce stands in the model cell, where foci of spruce beetles did not appear last year.
COBISS.SI-ID: 49798915