Template-Type: ReDIF-Article 1.0 Author-Name: M. Bošeľa Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Author-Name: V. Šebeň Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Title: Analysis of the aerial application of fertilizer and dolomitic limestone Abstract: The paper evaluates the quality of revitalization treatments (fertilization and liming) carried out in selected areas within Forests of the Slovakia (state enterprise) during the year 2008. Revitalization treatments were carried out in declining Norway spruce forest stands in different site conditions. Full-scale aerial technology (helicopter and crop duster) was applied. The aim of the study was to find out the total amount and its variability of both fertilizers and dolomitic limestone after their application. The analyses revealed significant differences between the amount of fertilizer and dolomitic limestone which was applied to selected areas and the required amount (norm). As for fertilization, the largest difference was found in magnesium (Mg) on Šaling area (the amount of magnesium reached only 7% ± 0.5 of the norm) and in zinc (Zn) on Ľadová area (only 8% ± 1 of the norm). The required amount according to the norm was approximately met in boron (B) on Ľadová area (65% ± 10 of the norm). Yet, a significantly lower amount of fertilizers than the required one was revealed on all selected areas. After the application of dolomitic limestone to Liptovská Teplička area the significantly lower amount than the required one was found out (72% ± 12 of the norm). On the other hand, the significantly higher amount of dolomitic limestone than the required one was determined on Smolník area (143% ± 27 of the norm). Results also show the huge spatial variability of both fertilizers and dolomitic limestone on all selected areas (from 40% up to 100% between collecting places, and up to almost 170% between collectors within the collecting places). Such high variability of applied fertilizers and dolomitic limestone and the lower total amount than the required one will influence the effect of revitalization treatments. Keywords: fertilization, liming, revitalization, variability Journal: Journal of Forest Science Pages: 47-57 Volume: 56 Issue: 2 Year: 2010 DOI: 10.17221/29/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/29/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201002-0001.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:2:id:29-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: F. Máliš Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Author-Name: J. Vladovič Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Author-Name: V. Čaboun Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Author-Name: A. Vodálová Author-Workplace-Name: National Forest Centre - Forest Research Institute in Zvolen, Zvolen, Slovakia Title: The influence of Picea abies on herb vegetation in forest plant communities of the Veporské vrchy Mts. Abstract: Natural mixed beech-fir forests were quite widely replaced by spruce dominated stands in Slovakia. Given the demands on the assessment of the forest status as well as on stopping the biodiversity loss it is required to evaluate the influence of Picea abies (L.) Karst. on the species composition. In a case study from the Veporské vrchy Mts. natural beech dominated forests were compared to stands with different spruce proportion. Within three groups of relevés with no, less and more than a half proportion of Picea abies the species diversity and Ellenberg indicator values were compared. The response of particular species to the proportion of Picea abies was evaluated by partial relation in direct gradient analysis. The increasing spruce proportion causes particularly higher occurrence of acidophytes and a decrease in nitrophytes. Species with the highest positive response to spruce are mostly shallow-rooted or characteristic of natural spruce forests. Greater richness along with the highest diversity was found in mixed stands with less than a half proportion of Picea abies. The most significant difference in species composition was between natural and spruce dominated stands. However the proportion of Picea abies does not reduce the species diversity in general, it causes significant changes in the species composition. As the results show, to avoid the negative effect and loss of phytodiversity it is required not to grow spruce dominated stands out of the natural occurrence of Picea abies. Keywords: beech forest, biodiversity, herb vegetation, Picea abies (L.) Karst., species composition Journal: Journal of Forest Science Pages: 58-67 Volume: 56 Issue: 2 Year: 2010 DOI: 10.17221/39/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/39/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201002-0002.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:2:id:39-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Turčáni Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: J. Patočka Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: M. Kulfan Author-Workplace-Name: Department of Ecology, Comenius University, Bratislava, Slovakia Title: Which factors explain lepidopteran larvae variance in seasonal guilds on some oaks? Abstract: Differences between the oak lepidopteran communities were studied in Slovakia in 1993 and 1994. Sampling was undertaken between April and October on 3 oak species. Biological traits of larvae were examined in order to explain differences in seasonal guilds among oaks. Cluster analysis shows similarities between communities in the flush feeder guild where the results were influenced mainly by temporal variability; in the late spring guild mainly by site; factors influencing summer feeder and autumn feeder similarities remain unclear. Detrended Correspondence Analysis (DCA) was used to investigate the main gradients explaining variability in communities. Results indicated that the host specificity along axis 1 (A1) and larval ballooning along axis 2 (A2) were important in the flush feeder guild; larval feeding strategy along A1 and the degree of defoliation by Lymantria dispar along A2 were important in late spring feeders; the year of study along A1 and host specificity along A2 were important in the summer feeder guild; and adaptation to lower quality of food along A1 and host specificity along A2 for the autumn feeder guild. The results are discussed. Keywords: cluster analysis, DCA, history-life traits of lepidopteran larvae, oaks, seasonal guilds Journal: Journal of Forest Science Pages: 68-76 Volume: 56 Issue: 2 Year: 2010 DOI: 10.17221/54/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/54/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201002-0003.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:2:id:54-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: D. J. Durzan Author-Workplace-Name: Department of Plant Sciences, University of California, Davis, USA Title: Arginine and the shade tolerance of white spruce saplings entering winter dormancy Abstract: Shade-tolerant white spruce saplings grown at 100, 45, 25, and 13% natural light for four years, and entering winter dormancy, modified their growth habit and redistributed the total soluble N among needles, roots, and stems with buds mainly to arginine N. Most free amino acid N was found in roots in saplings at full light, and the least at 13% light. Glutamate, glutamine, and aspartate N contributed to the accumulation of soluble arginine N. Arginine-derived γ-guanidinobutyric acid, agmatine and an unidentified guanidino compound accumulated mainly in stems with buds at 25 and 13% light. The profiling N metabolism and arginine-derived guanidino compounds extend models for shade tolerance based mainly on photosynthesis, respiration and carbon gain. Keywords: amino acids, arginine, guanidino compounds, nitrogen, Picea glauca, shade tolerance, winter dormancy Journal: Journal of Forest Science Pages: 77-83 Volume: 56 Issue: 2 Year: 2010 DOI: 10.17221/57/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/57/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201002-0004.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:2:id:57-2009-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Klimánek Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Title: Analysis of the accuracy of GPS Trimble JUNO ST measurement in the conditions of forest canopy Abstract: GPS Trimble JUNO ST was tested at 16 points under forest canopy. The measurements were done on three different dates of the growing seasons in 2007 and 2008. On each date, 4 recordings were measured in the length of 1, 2, 5, and 10 minutes with the recording frequency of 5 seconds. The resultant data were statistically evaluated by analysis of variance (ANOVA) both for data before corrections and for data after post-process corrections from the reference station. The tested GPS receiver reaches the average mean square error of the measurement of XY coordinates in the interval of 2.7 up to 5.1 m (without corrections and depending on the time of observation). The error of the altitudinal (Z) coordinate measurement is three times the average MSE XY. The use of corrections from reference stations turns out to be ineffective. No statistically significant relationship was proved between the PDOP value and the error of measurement of the position or height, and there was no significant relationship of the type of stand or stand density or the type of relief. By contrast, the age of stand was statistically significant and there are higher MSE XY values in older stands, depending, however, on the stand density. Keywords: forest canopy impact, GPS, GPS device accuracy, location precision, mean square error, Trimble JUNO ST Journal: Journal of Forest Science Pages: 84-91 Volume: 56 Issue: 2 Year: 2010 DOI: 10.17221/32/2009-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/32/2009-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201002-0005.txt Handle: RePEc:caa:jnljfs:v:56:y:2010:i:2:id:32-2009-JFS