Journal of Forest Science, 2006 (vol. 52), issue 11
Spruce windfalls and cambioxylophagous fauna in an area with the basic and outbreak state of Ips typographus
E. Kula, W. Z±becki
J. For. Sci., 2006, 52(11):497-509 | DOI: 10.17221/4530-JFS 
In spruce windfalls incurred in the autumn and winter season the synusia of cambioxylophagous fauna was evaluated in the profile of a whole stem and crown branches according to the species spectrum, tree cover and intensity of attack. The fauna of windfalls in the area with the basic level of Ips typographus and in the gradation area differed by species diversity. In the gradation area, frequency of the occurrence of Ips typographus (L.) was higher by 20-40%. P. chalcographus (L.) showed decreased stem cover in the gradation area. In the area with the basic state of Ips typographus, windfalls were intensively colonized...
Factors controlling the regeneration process in unevenly aged silver fir forests: inferences from the spatial pattern of trees
J. Paluch
J. For. Sci., 2006, 52(11):510-519 | DOI: 10.17221/4531-JFS
The main objective of this study was to prove the relationship between the spatial pattern of trees and distribution of advanced regeneration in structured Abies alba Mill. forests in the Western Carpathians (of southern Poland). In 13 sample plots (0.45-1.00 ha in size), the locations of all live trees above 15 cm in d1.3 and all stumps of canopy trees (above 50 cm in d1.3) were determined. In addition, in all plots the coordinates of all live and dead pole-stage trees (5-15 cm in d1.3), in seven plots the coordinates of all live and dead younger saplings (0.5-1.3 m in height), and...
Distribution of tribes of cockchafers of the genus Melolontha in forests of the Czech Republic and the dependence of their swarming on temperature
M. ©vestka
J. For. Sci., 2006, 52(11):520-530 | DOI: 10.17221/4532-JFS
The abundance and species spectrum of cockchafers of the genus Melolontha and characteristics of the tribes in four forest regions of theCzechRepublic was explored. We used light traps, automatic meteorological stations and field investigations to study the course of swarming, species composition, abundance of the respective tribes, sex ratio during swarming and the dependence of swarming on the average daily temperature. Studies will continue in the next years and the objective is to use the results for prognosis of the occurrence of cockchafers and the damages subsequently caused by grubs in forest cultures.
The occurrence of endophytic fungus Phomopsis oblonga on elms in the area of southern Bohemia
M. Dvořák, D. Palovčíková, L. Jankovský
J. For. Sci., 2006, 52(11):531-535 | DOI: 10.17221/4533-JFS
The health condition of the population of elms in the region of southern Bohemiawas studied from the viewpoint of their decline, the occurrence of Dutch Elm Disease (DED) and the presence of other diseases. Of the total number of 105 elms in total 33 of them were without any symptoms of the disease or other damage. Elms regenerated quite spontaneously in the neighbourhood of mother trees and their increasing population in mixed forests is hopeful. According to macroscopic symptoms, DED was identified in 10 trees but the presence of pathogens Ophiostoma ulmi and Ophiostoma novo-ulmi was not identified in isolations. A possible reason...