THE INFLUENCE OF ICE RAIN AND BARK BEETLE ON THE FORESTS OF GORSKI KOTAR AND THE IMPLEMENTATION OF THE NECESSARY DDD MEASURES FOR THE PURPOSE OF PREVENTING THE SPREAD OF SPRUCE SCRIPTURE CLASS

Smrekov pisar – Ips typographus je kukac koji na napada stabla smreke. Pod korom smreke buši hodnike i na taj način oštećuje stabla. U hodnicima liježe jajašca iz čega se razvijaju nove generacije smrekovog pisara. Razvija se iz jajašca, preko ličinke i kukuljice, pa sve do odrasle jedinke, odnosno imaga. Spada u srednje rane potkornjake, zbog toga jer se pojavljuje tek u travnju. Uzročnik je velikih šteta na šumskim stablima i uzrokuje ogromne financijske gubitke. U ovome istraživanju pratio se broj jedinki Ips typographus ulovljenih feromonskim klopkama. Kretanje broja jedinki pratilo se u razdoblju 2016. i 2017. godine, na području šumarija Uprave šuma podružnice Delnice. Iz rezultata se može vidjeti daj je uvelike rastao broj jedinki smrekovog pisara u 2016. i 2017. godini, kada je ujedno i trajao najveći napad potkornjak u šumama Gorskog kotara. Pravovremenim reagiranjem i provođenjem svih potrebnih mjera suzbijanja smrekovog pisara, do danas se reducirao broj jedinki navedenog potkornjaka.Eight Toothed Spruce Bark Beetle – Ips typographus is an insect that attacks spruce trees. Under the spruce bark, it drills corridors and thus damages trees. Eggs lay in the corridors, from which new generations of Eight Toothed Spruce Bark Beetle develop. It develops from an egg, through a larva and a pupa, all the way to an adult, or imago. It belongs to the middle early bark beetles, because it appears only in April. It causes great damage to forest trees and causes huge financial losses. The number of Ips typographus caught by pheromone traps was monitored in this study. The movement of the number of individuals was monitored in the period 2016 and 2017, in the area of forestry of the Forest Administration of the Delnice branch. From the results, it can be seen that the number of spruce scribes increased significantly in 2016 and 2017, when the largest bark beetle attack in the forests of Gorski kotar also lasted. By timely response and implementation of all necessary measures to control spruce scribe, the number of individuals of this bark beetle has been reduced to date