Gradacija potkornjaka Ips typographus (Linnaeus 1758) (Coleoptera: Scolytidae) na Kopaoniku

Abstract

U martu i aprilu 2012. godine, vetar je, na Ravnom Kopaoniku (Nacionalni park Kopaonik), na površini od oko 35 ha, izvalio oko 22.000 stabala smrče (Picea abies (L.) H.Karst.) ukupne zapremine oko 11.000 m3. Kako ona iz šume nisu blagovremeno uklonjena, veliki broj njih je naselio osmozubi smrčin potkornjak Ips typographus. Pošto je to gradogena vrsta, koja u ovakvim uslovima može da pričini velike štete, zaposleni u Javnom preduzeću 'Nacionalni park Kopaonik' su angažovali Šumarski fakultet Univerziteta u Beogradu da obavi entomološki pregled izvaljenih stabala. Tim pregledom je utvrđeno da je, u zavisnosti od dela šume, 60 do 95 % izvaljenih stabala jako napadnuto potkornjakom I. typographus. Zbog toga postoji velika opasnost od njegove gradacije. Da bi se to sprečilo hitno je potrebno preduzeti odgovarajuće mere. Nažalost, hemijsko suzbijanje I. typographus u ovom trenutku nemoguće je sprovesti, jer na tržištu Srbije ne postoji nijedan zvanično registrovan hemijski preparat koji se u te svrhe može upotrebiti. Zbog toga je suzbijanje I. typographus potrebno provesti primenom lovnih stabala.

In March and April 2012, on Ravni Kopaonik (National Park Kopaonik), on the area of about 35 ha, about 22,000 of spruce (Picea abies (L.) H.Karst.) trees were uprooted by the wind, amounting to total volume of about 11,000 m3. As they were not removed from the forest in good time, numerous trees were infested by European spruce bark beetle - Ips typographus. As this is an outbreaking species, which in such conditions can cause great damage, the Faculty of Forestry, University of Belgrade, was engaged by the Public Enterprise 'National Park Kopaonik' to perform an entomological inspection of windthrown trees. The examination showed that, depending on the part of the forest, 60 to 95 % of wind thrown trees were severely infected by bark beetle I. typographus. Consequently, there is a great danger of its outbreak and to prevent the outbreak, urgent measures should be undertaken. Unfortunately, chemical suppression of I. typographus is not possible for the time being because, on Serbian market, there are no officially registered chemical preparations which can be used for this purpose. For that reason, the control of I. typographus should be performed by the application of trap trees.