Influence of forest fires on entomofauna - mostly subcortical, in the Austrian pine monocultures (Pinus nigra Arn.) of Slovene Karst
2001
Jurc, M. (Ljubljana Univ. (Slovenia). Biotechnical Fac., Forestry and Renewable Forest Resources Dept.)
A study of insect species found in trunks of declining and dead Austrian pine (Pinus nigra Arn.) trees was carried out on burnt out areas of Austrian pine plantations in Slovene Karst from 1999 to 2001. Three locations were chosen: Kojnik (UTM: LV41, the fire took place in April 1998 over an area of 46 ha, characterized by a ground and crown fire), Podgovci (LV60, August 1998, 7.53 ha, ground fire), Mlave (LV61, August 2000, 2.4 ha, crown fire). Entomofauna was collected under the bark and in the wood of damaged trunks of Austrian pine. We collected 2181 individuals and detected 84 taxa (53 species and taxa from 31 genus) from four ordo (Coleoptera, Heteroptera, Hymenoptera and Raphidioptera). The most important species from the ordo Coleoptera were Ips sexdentatus, Orthotomicus laricis, Pityogenes chalcographus, P. bistridentatus, Hylastes ater, Nudobius lentus, Placusa complanata, Platysoma elongatum, P. lineare, Thanasimus formicarius, Corticeus longulus, Uleiota planata, Rhagium inquisitor, Acanthocinus aedilis, Pisodes notatus, Otiorhynchus cardiniger, from the ordo Heteroptera the most common was Pyrrhocoris apterus, from ordo Hymenoptera Camponotus herculeanus was found. The differences in species composition and in the numbers of individuals of the same species at different locations indicate the differences in site and microsite characteristics as well as the degree of damage to the host. The highest Shannon-Wiener diversity index of subcortical entomofauna was established on the most recent burnt out location and the lowest on the oldest burnt out location.
显示更多 [+] 显示较少 [-]