Journal of Forest Science, 2007 (vol. 53), Special Issue
Preface - International Conference Species Diversity, Population Structure and Impact of Animals and Fungi on Forest Functions in Anthropogenically Affected Spruce Forests
J. Holuša
J. For. Sci., 2007, 53(20):1-2 | DOI: 10.17221/2152-JFS 
Composition of psocid taxocenoses (Insecta: Psocoptera) in Fageti-Piceeta s. lat. and Piceeta s. lat. forests in the Western Carpathian Mts.
O. Holuša
J. For. Sci., 2007, 53(20):3-10 | DOI: 10.17221/2156-JFS
Psocid taxocenoses (Psocoptera) were studied in forest ecosystems of the Western Carpathian Mts. during 1997-2001. As a study frame were used altitudinal vegetation zones (according to PLÍVA 1971, 1991). Lower units of forest typological system (forest type complexes) were used for a classification of ecological conditions as well. Within this work can be the term "mountain spruce forest" understood as following communities of altitudinal vegetation zones (AVZ): the 7th - Fageti-Piceeta s. lat. and the 8th - Piceetas. lat. These AVZ occur in the study area in the Moravskoslezské Beskydy Mts. in the Czech Republic...
Flight activity of Anthribus nebulosus Forster, 1770 (Coleoptera: Anthribidae) and notes to its life history
J. Holuša, M. Trýzna
J. For. Sci., 2007, 53(20):11-15 | DOI: 10.17221/2150-JFS
In the Czech Republic, A. nebulosus occurs in coniferous, deciduous as well as in mixed forests, in lowland forests and even on forest-steppe habitats. Larvae occur mainly on Picea sp., Pinus sp. and Abies sp.; adults occur on the same tree species and also on Larix sp., Quercus sp., Salix sp. and Fagus sp. Adults overwinter in the bark of several coniferous trees with thicker bark (mainly Pinus sylvestris L. and Larix decidua Mill.) where they are hidden in cracks. Woodpeckers attack such trees with masses ofA. nebulosus very intensively. In five localities with Malaise traps...
Ecological conditions influencing the localization of egg-laying by females of the cockchafer (Melolontha hippocastani F.)
M. Švestka
J. For. Sci., 2007, 53(20):16-24 | DOI: 10.17221/2151-JFS
We explored the ecological conditions, which influence the female Melolontha hippocastani F. in their selection of the locality for laying eggs. In the region of mass outbreak of M. hippocastani in the south-eastern part of the Czech Republic in selected experimental sample plots including 1 to 8 year-old forest plantations we explored the extent of losses caused by white grub feeding and the relation between the extent of the damage and the individual characteristics of the experimental plots. The relation between the extent of the damage and the method of establishment of the stands and degree of weed infestation at the time of swarming...
The results of manipulated experiments with inoculation of Ips typographus (L., 1758) to spruce trees under various levels of water stress
M. Turčáni, O. Nakládal
J. For. Sci., 2007, 53(20):25-30 | DOI: 10.17221/2159-JFS
Manipulated experiments with males of Ips typographus (L., 1758) were conducted in spruce stands in north-western Slovakia. Some of trees were stressed by a lack of water caused by preparation of roofs under canopy. Inoculation experiments with bark beetles were conducted on such trees. According to results, the differences in attack rates between differently positioned trees on slope were not statistically significant (P = 0.389 for bottom and middle and P = 0.924 for bottom and top, and P = 0.530 for middle and top trees, t-test). Also the differences in attacks rate and the speed of entry holes preparation between...
The influence of irradiation on the behaviour and reproduction success of eight toothed bark beetle Ips typographus (Coleoptera: Scolytidae)
M. Turčáni, J. Vakula
J. For. Sci., 2007, 53(20):31-37 | DOI: 10.17221/2154-JFS
Irradiation experiments on Ips typographus (L., 1758) with doses of 15 and 30 Gy (cobalt 60) were conducted in 2006. The effect of irradiation on the mating behaviour and reproduction success of the bark beetle has been evaluated in rearing experiments in the laboratory. The effect of treatment on basic rearing parameters - (a) galleries per log, (b) mating chambers per log, (c) galleries with mother tunnels, (d) galleries with larvae tunnels, (e) mother tunnels - was not statistically significant - (a) F = 0.609, d.f. = 4, P = 0.560; (b) F = 1.883, d.f. = 4, P = 0.194; (c) F = 1.322, d.f. = 4, P = 0.303;...
Spatio-temporal patterns of the Norway spruce decline in the Beskid Śląski and Żywiecki (Western Carpathians) in southern Poland
W. Grodzki
J. For. Sci., 2007, 53(20):38-44 | DOI: 10.17221/2155-JFS
A dramatic forest decline due to the bark beetle outbreak, which occurs in the Norway spruce stands in the Western Beskidy (southern Poland) since 2003, was started after severe physiological drought during winter time. An analysis describing some spatio-temporal characteristics of this process, with special regard to the patterns of bark beetle occurrence related to root fungal diseases, is presented. In 2003 the bark beetle occurrence level assessed as high and catastrophic was recorded on 40% of the area, while in 2006 - on 59%. The range of Armillaria root disease and bark beetle outbreak increased towards higher altitudes, including the...
Spatial distribution of four spruce bark beetles in north-western Slovakia
M. Turčáni, T. Hlásny
J. For. Sci., 2007, 53(20):45-52 | DOI: 10.17221/2157-JFS
Infestation density of four the most common spruce bark beetle species was estimated on 15 study sites (10 trees per site) in the Kysuce model region in 2006. Five half-metre long sections of the stem were selected and dissected at the base of the stem; midway between the base of the stem and the base of the crown; just below the base of the crown; in the middle of the crown; and in the upper part of the crown. The infestation density of bark beetles, expressed as the number of mating chambers per dm2, was determined. Ordinary kriging was then used to produce smooth maps and visualize spatial distribution of study species. Maps with isolines...
Contribution to knowledge of Hylesinus fraxini (Panzer, 1779) (Coleoptera: Scolytidae) natural enemies from Northern Moravia (Czech Republic)
O. Nakládal, M. Turčáni
J. For. Sci., 2007, 53(20):53-56 | DOI: 10.17221/2158-JFS
Predation by natural enemies was studied as mortality factors of Hylesinus fraxini in 2006-2007. Predation by birds was not recorded and predation rate by insect reached 0.1%. Only one insect predator was reared - Thanasimus formicarius (Linnaeus, 1758). The total rate of parasitism was 54.0%. At least 8 species of parasitoids from the order Hymenoptera were recorded. The most abundant parasitoid was Eurytoma morio Boheman, 1836 (44.1% from the total number of all reared parasitoids; 23.8% of the total mortality), subsequently Eurytoma arctica Thomson, 1876 (31.7%; 17.1%), Cheiropachus quadrum (Fabricius, 1787) (12.8%;...
On the occurrence of web-spinning sawflies of the genus Cephalcia (Hymenoptera, Pamphiliidae) in the Czech Republic
J. Holuša, J. Liška, R. Modlinger, A. Véle
J. For. Sci., 2007, 53(20):57-62 | DOI: 10.17221/2161-JFS
Web-spinning sawflies of the genus Cephalcia Panzer (Hymenoptera, Pamphiliidae) in the Picea abies forests of the Beskidy Mountains (Poland)
M. Jachym
J. For. Sci., 2007, 53(20):63-68 | DOI: 10.17221/2149-JFS
This article presents a review of data and results of investigations from the period 1958-2006 regarding the occurrence of insects of the genus Cephalcia Panzer (Hymenoptera, Pamphiliidae) in Norway spruce stands of the Beskidy Mountains (Western Carpathians, southern Poland). Currently, eight species are known for the area: C. abietis, C. alashanica, C. alpina, C. annulicornis, C. arvensis, C. erythrogaster, C. fulva and C. masuttii. Information regarding each species is given, with details on identification, local occurrence and importance.
Correlation between flight activity of sawflies Pristiphora abietina, P. saxesenii, P. gerula and P. leucopodia (Hymenoptera: Tenthredinidae) and spruce (Picea abies) bud breaking in Eastern Czech Republic
J. Holuša, J. Lubojacký
J. For. Sci., 2007, 53(20):69-73 | DOI: 10.17221/2153-JFS
The flight activity of spruce tenthredinids were studied using Malaise traps and yellow sticky boards in young spruce forests in the Nízký Jeseník Hills during years 2005 and 2006. In most cases, studied species (Pristiphora abietina, Pristiphora saxesenii, Pristiphora gerula, Pristiphora leucopodia) showed a statistically significant correlation between numbers of specimens caught at two- or three-day periods and numbers of budded spruces in both years.
Neuroptera, Raphidioptera and Mecoptera assemblages inhabiting young spruce (Picea abies) forests: dominance structure and seasonal activity patterns
Ľ. Vidlička, J. Holuša
J. For. Sci., 2007, 53(20):74-81 | DOI: 10.17221/2162-JFS
Neuropteroid insects (Neuroptera, Raphidioptera) and scorpion flies (Mecoptera) were studied in six young spruce forest localities in the eastern part of the Czech Republic during years 2005 and 2006. Twenty-seven species of lacewings, four species of snake flies and four species of scorpion flies were found using the Malaise traps. Consequently, the seasonal flight activity of the seven most abundant species (Chrysopa perla, Hemerobius pini, Hemerobius humulinus, Dichrostigma flavipes, Phaeostigma notata, Panorpa communis and Panorpa germanica) is discussed.
Changes in the mycorrhizal status of some mountain spruce forests
V. Pešková
J. For. Sci., 2007, 53(20):82-88 | DOI: 10.17221/2160-JFS
In the present study, the defoliation status of spruce stands is related to mycorrhizal conditions and presence of mycorrhizal macromycetes fungi in two localities at the highest sites of the Krkonoše Mts. In the long-term view, the defoliation and the diversity of mycorrhizal fungi have improved but the number of active as well as nonactive mycorrhizae has decreased while their ratio has not changed. Statistically significant is the correlation between the total number of mycorrhizae and pH. The results within last years of observations as well as in comparison to the conditions in the last decade show that mountain spruce stands growing at non-exposed...