@article {13983,
	title = {Effects of nitrogen on the selection of food by Phyllobius arborator (Herbst)},
	journal = {Journal of Forest Science},
	volume = {54},
	number = {1},
	year = {2008},
	month = {January},
	pages = {17-23},
	type = {Article},
	abstract = {The selection of a nutritive plant and the consumption of food (Betula pendula Roth) affected by differentiated inputs of nitrogen after the repeated application of ammonium nitrate into soil was monitored at Phyllobius arborator (Herbst) under field (polythene greenhouse) and laboratory (Climacell) conditions. In birch leaves, the content of nitrogen increased. The diameter and height increment was stimulated by the application of 0.5-1 g, higher doses induced stress and the fall of increment. According to the frequency of feeding marks on leaves and food consumption by weevils of the genus Phyllobius in a polythene greenhouse, birch with the higher content of nitrogen was preferred. In laboratory rearing, females showed higher food requirements. In short-term rearing, differentiation did not occur in the amount of consumed food in males and females depending on the nitrogen content.},
	keywords = {Phyllobius arborator},
	isbn = {1212-4834},
	author = {Kula, E. and Peslova, A. and Buchtova, D.}
}
@article {13984,
	title = {Merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies (L.) Karst.) with focus on bark beetles (Coleoptera: Scolytidae) and types of tree damage in different gradation conditions},
	journal = {Journal of Forest Science},
	volume = {56},
	number = {10},
	year = {2010},
	month = {2010},
	pages = {474-484},
	abstract = {Research on merocoenoses of cambioxylophagous insect fauna of Norway spruce (Picea abies (L.) Karst.) was carried out in spruce stands of different age in the area with an endemic population (Moravian-Silesian Beskids, Czech Republic) and in the area with an epidemic population (Beskid Zywiecki, Poland) of the eight-toothed spruce bark beetle Ips typographus (L.). The structure of merocoenoses was characterized separately for standing trees attacked by bark beetles, trees struck by lightning, trees affected by fungal pathogens and wind-felling and trees in the form of snags and fragments. The occurrence of cambioxylophagous insects, mostly bark beetles (Coleoptera: Scolytidae), was compared between the study areas with emphasis on dominant facultative primary bark beetles and types of damage to spruce trees.},
	keywords = {Ips typographus},
	isbn = {1212-4834},
	author = {Kula, E. and Zabecki, W.}
}
@article {13981,
	title = {Cambioxylophagous fauna developing on logging residues of blue spruce (Picea pungens Engelmann)},
	journal = {Journal of Forest Science},
	volume = {57},
	number = {1},
	year = {2011},
	month = {2011},
	pages = {24-33},
	abstract = {Cutting down 20- to 30-years-old trees of blue spruce (Picea pungens Engelm.) (October, May) and cross-cutting them to sections of different volume (0.5[long dash]75 dm3) under conditions of half-shade x open area resulted in a potential food offer for cambiophages. Ips amitinus (Eichh.) and Pityogenes chalcographus (L.) reached the higher frequency of occurrence on sections placed in the open area than in half-shade and on stems felled in the autumn season than in the spring season. Dryocoetes autographus (Ratz.) was markedly profiled on sections in half-shade with the gradual desiccation of phloem. P. chalcographus preferring open areas occurred on branches being accompanied by Cryphalus abietis (Ratz.), which attacked branches located in half-shade. On stems of sections from both autumn and spring felling, one generation of I. amitinus developed, however, on autumn sections, the 2nd generation developed unsuccessfully on the original nutritive material. P. chalcographus completed the development of one generation on stems and branches from autumn felling. On the spring material, the invasion was delayed and a part of wintering larvae did not complete their development. Logging residues of P. pungens were available for the development of I. amitinus and P. chalcographus during one growing season only.},
	keywords = {Ips amitinus, Pityogenes chalcographus},
	isbn = {1212-4834},
	author = {Kula, E. and Kajfosz, R. and Polivka, J.}
}
@article {13980,
	title = {Response of birch (Betula pendula Roth) phytophages to liming},
	journal = {Journal of Forest Science},
	volume = {54},
	number = {12},
	year = {2008},
	month = {December},
	pages = {572-578},
	type = {Article},
	abstract = {In the course of 2004-2007, the effects of compensation liming at the application dose of 1.5-3-6 t/ha dolomitic limestone on the elimination or activation of phytophages or other types of damage resulting in the loss of assimilatory organs did not become evident yet. A shift was noted in the fluctuation expressed indirectly by the extent of damage to the assimilatory area in feeding caused by an undetermined hymenopterous larva (summer increase), weevils (spring and summer decline and increase in 2007), Coleophora serratella (decline), Eriocrania sp. (increase), mites Acalitus rudis (increase), Eriophyes leionotus (increase in 2006-2007). Only signs of a positive response to higher doses of dolomitic limestone characterized the mite Eriophyes leionotus.},
	keywords = {Curculionidae},
	isbn = {1212-4834},
	author = {Kula, E.}
}
@article {13975,
	title = {The role of Hylastes cunicularius Erichson (Coleoptera: Scolytidae) in transferring uropodine mites in a mountain spruce forest},
	journal = {Journal of Forest Science},
	volume = {56},
	number = {6},
	year = {2010},
	month = {2010},
	pages = {258-264},
	abstract = {The bark beetle Hylastes cunicularius was studied in the Tatra Mountains, West Carpathians, to clarify its role in transferring phoretic uropodine mites during dispersal in a mountain spruce forest. Emphasis was placed on the proportion of beetles vectoring deutonymphs of uropodine mites, and on assemblage structure, frequency distribution and placement of uropodids on the bark beetle vector. A total of 3,302 adults of H. cunicularius were caught into flight interception traps, of which 529 (16\%) vectored a total of 1,020 individuals and four species of uropodine mites: Trichouropoda pecinai Hirschmann \& Wisniewski, Trichouropoda obscura (C. L. Koch), Uroobovella vinicolora (Vitzthum), Uroobovella ipidis (Vitzthum). The uropodine mite assemblage was dominated by T. pecinai, which represented 94.6\% of the collected mite individuals. T. pecinai and U. vinicolora were documented as new associates of H. cunicularius. Frequency distribution of uropodids on the beetle was L-shaped. The number of vectored mites and the number of dispersing individuals of H. cunicularius were positively correlated.},
	keywords = {Hylastes cunicularius},
	isbn = {1212-4834},
	author = {Krsiak, B. and Zach, P. and Kulfan, J.}
}
@article {12493,
	title = {Flight activity of Anthribus nebulosus Forster, 1770 (Coleoptera: Anthribidae) and notes to its life history},
	journal = {Journal of Forest Science},
	volume = {53},
	year = {2007},
	month = {2007},
	pages = {11-15},
	abstract = {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 of A. nebulosus very intensively. In five localities with Malaise traps in the Nizky Jesenik Hills, the flight activity started at the beginning of May and ended in mid-June with the peak at the end of May and beginning of June in 2005. In 2006, the flight activity started later in mid-May and lasted to the beginning of July but was interrupted by cold and rainy weather. At higher altitudes were beetles sampled only in the first half of June in 2006. The size of males and females is very similar. In total, pronotum width of males varied between 0.85 mm and 2.40 mm, and females between 1.00 mm and 2.30 mm. There is no statistically significant difference between them. The equal sex ratio found in our material could confirm the fact that the flight activity of both sexes is the same.},
	isbn = {1212-4834},
	author = {Holusa, J. and Tryzna, M.}
}
@article {12492,
	title = {Occurrence of Ips duplicatus (Coleoptera: Curculionidae, Scolytinae) on pines (Pinus sp.) in the Czech Republic and southern Poland - short communication},
	journal = {Journal of Forest Science},
	volume = {54},
	number = {5},
	year = {2008},
	month = {May},
	pages = {234-236},
	type = {Article},
	abstract = {Spruce is regarded as the only host plant of Ips duplicatus in Central Europe, whereas this beetle exceptionally occurs on pine in Siberia. Its occurrence on Pinus strobus and Pinus sylvestris was discovered in the eastern part of the Czech Republic and in southern Poland, where the population density of Ips duplicatus has been increased for a long time on Norway spruce. However, all cases concerned only single trees which were growing in forest complexes with spruce dominance. The most likely explanation is merely a consequence of the typical host plant shortage},
	keywords = {Ips duplicatus},
	isbn = {1212-4834},
	author = {Holusa, J. and Grodzki, W.}
}
@article {12368,
	title = {Geostatistical simulation of bark beetle infestation for forest protection purposes},
	journal = {Journal of Forest Science},
	volume = {55},
	number = {11},
	year = {2009},
	month = {November},
	pages = {518-525},
	abstract = {Geostatistical analysis of bark beetle activity and its use for the improvement of pest control measures are presented. Data on the volume of salvage timber felling due to bark beetle infestation for the period 2002-2004 were used for the analysis. Research was carried out in the northwestern part of Slovakia. The techniques used were variogram modelling, Turning Bands Simulation and selected techniques of simulation post-processing. The maps indicating the probability that a critical volume of timber felling was exceeded in a particular location were produced. The proposed system may be used effectively for the improvement of pest control measures and development of slow the spread strategies. The benefits and shortcomings of this approach in forest protection are discussed.},
	isbn = {1212-4834},
	author = {Hlasny, T. and Vizi, L. and Turcani, M. and Koren, M. and Kulla, L. and Sitkova, Z.}
}
@article {12369,
	title = {Geographical variability of spruce bark beetle development under climate change in the Czech Republic},
	journal = {Journal of Forest Science},
	volume = {57},
	number = {6},
	year = {2011},
	month = {2011},
	pages = {242-249},
	abstract = {Climate change is expected to influence the distribution and population dynamics of many insect pests, with potential severe impacts on forests. Spruce bark beetle Ips typographus (L.) (Col.: Curculionidae, Scolytinae) is the most important forest insect pest in Europe whose development is strictly regulated by air temperature. Therefore, climate change is anticipated to induce changes in the pest{\textquoteright}s distribution and development. We used the PHENIPS model to evaluate climate change impacts on the distribution and voltinism of spruce bark beetle in the Czech Republic. Two future time periods - 2025-2050 (near future) and 2075-2100 (distant future) - are addressed. The period 1961-1990 is used as the reference. We found that while a two-generation regime dominated in the Czech Republic in the reference period, significant three-generation regime regions are projected to appear in the near future. In the distant future, the three-generation regime can be expected to occur over all existing coniferous stands in the Czech Republic. The analysis of altitudinal shift of n-generation regime regions indicates noticeable expansion of Ips typographus development to higher elevations, leading for example to disappearance of one-generation regime regions in the distant future. Uncertainties and limitations of the presented findings are discussed as well.},
	keywords = {Ips typographus},
	isbn = {1212-4834},
	author = {Hlasny, T. and Zajickova, L. and Turcani, M. and Holusa, J. and Sitkova, Z.}
}
@article {11482,
	title = {Spatio-temporal patterns of the Norway spruce decline in the Beskid Slaski and Zywiecki (Western Carpathians) in southern Poland},
	journal = {Journal of Forest Science},
	volume = {53},
	year = {2007},
	month = {2007},
	pages = {38-44},
	abstract = {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 zone above 1,000 m a.s.l. The wind damage in 2004 and 2007, and high temperatures in the summer 2006, further stimulated the increase in bark beetle populations level. Some conclusions on possible development of the outbreak and recommendations concerning related needs in forest protection, are given.},
	isbn = {1212-4834},
	author = {Grodzki, W.}
}
@article {9452,
	title = {Feeding ecology of pine shoot beetles (Tomicus spp.) in tree crowns of Scots pine (Pinus sylvestris L.) stands under one-year outbreak},
	journal = {Journal of Forest Science},
	volume = {53},
	number = {10},
	year = {2007},
	month = {October},
	pages = {445-451},
	abstract = {Studies were carried out in southern Poland during 2002-2006 in Scots pine stands under the effect of an outbreak of pine shoot beetles. The qualitative aspects of beetle feeding in tree crowns, studied on the basis of fallen shoots collected on experimental plots, are presented in this paper. The beetle numbers affected the age distribution of damaged shoots and the proportion of multiple attacks. The proportions of one-year-old shoots and the numbers of shoots with more than two attacks increased in the marginal part of the stand in the year of intensive feeding of beetles and in the subsequent year. A similar proportion of shoots with two attacks in both stands under investigations in individual study periods, with no relation to beetle numbers, does not permit to use this characteristic for forecasting purposes. The average length of tunnels in shoots attacked once reached 20 mm at maximum. The average length of tunnels (measured from the place of shoot disruption) was greater in shoots with two attacks than in shoots witha single one (P 0.0001). The difference was not significant (P = 0.3429) only in stand B during the study season 2004-2005. The majority of the tunnels made in apical portions of shoots with two attacks damaged the tissue of apical shoots. The distance between the base of the second tunnel and the shoot apex in shoots with two attacks, and its significant (P 0.01) linear relationship with the length of beetle tunnels, indicated a high nutritional quality of apical portions of shoots.},
	keywords = {Tomicus},
	isbn = {1212-4834},
	author = {Borkowski, A.}
}
@article {9367,
	title = {The response of weevil communities (Coleoptera: Curculionoidea) to the altitudinal zones of beech stands},
	journal = {Journal of Forest Science},
	volume = {54},
	number = {6},
	year = {2008},
	month = {June},
	pages = {262-272},
	type = {Article},
	abstract = {Good knowledge of geobiocoenoses is one of the primary preconditions for biogeographical differentiation of the landscape, protected territory tending and preservation of forest ecosystems. For deepening the knowledge of the complex geobiocoenological relations the study of curculiocoenoses was conducted. It was conducted in eighteen permanent research plots based in beech stands of the 3rd, 4th and 5th altitudinal zone in the regions of South Moravia and East Bohemia. The relation of weevils to altitudinal zones was proved on the basis of some ecological index numbers and statistic methods DCA and CCA (P<=0.001). It was found out that curculiocoenoses of the investigated altitudinal zones overlapped and some species decreased or increased their dominance and abundance with increasing altitude. Characteristics of the beech stand curculiocoenoses have been proposed for the 3rd, 4th and 5th altitudinal zone, which can be used as an ancillary component of the geobiocoenological or typological system. For a more complex conclusion similar research of weevils should be carried out in the beech stands of other altitudinal zones and also in other forest stands.},
	isbn = {1212-4834},
	author = {Beranek, J.}
}
