Template-Type: ReDIF-Article 1.0 Author-Name: František Lorenc Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště-Strnady, Czech Republic Title: Cryptostroma corticale and its relationship to other pathogens and pests on Acer pseudoplatanus Abstract: In the present study, 20 sycamore maples (Acer pseudoplatanus L.) were evaluated on eight plots (160 trees) affected by sooty bark disease (SBD), caused by Cryptostroma corticale (Ellis & Everh.) P.H. Greg. & S. Waller in Northern Bohemia, Czech Republic. Mortality and presence of common pest taxa were assessed for each tree. Data were statistically evaluated using frequency and principal component analyses. The presence of C. corticale and Prosthecium pyriforme Jaklitsch & Voglmayr were positively related, with a significantly higher occurrence on dead trees. Rhytisma acerinum (Pers.) Fr. and Aceria macrorhyncha Nalepa were also positively related. However, the presence of Drepanosiphum platanoidis Schrank was not clearly related to the other evaluated taxa. Furthermore, C corticale was not present on Norway maple trees (Acer platanoides L.) growing on the plots. The results suggest that (i) the mortality of the sycamore was caused by C. corticale, while P. pyriforme was only an accompanying weak pathogen; (ii) R. acerinum, A. macrorhyncha, and D. platanoidis did not cause the mortality of the sycamore and their presence was not related to C. corticale infection; and (iii) planting more resistant maple species on sites susceptible to attack by SBD, particularly when stressed by drought, is recommended. Keywords: Central Europe, forest protection, Prosthecium pyriforme, sooty bark disease, sycamore maple Journal: Journal of Forest Science Pages: 610-618 Volume: 70 Issue: 12 Year: 2024 DOI: 10.17221/41/2024-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/41/2024-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202412-0001.txt Handle: RePEc:caa:jnljfs:v:70:y:2024:i:12:id:41-2024-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Václav Zouhar Author-Workplace-Name: Forest Management Institute - Brandýs nad Labem, Brno branch, Brno, Czech Republic Author-Name: Aleš Kučera Author-Workplace-Name: Department of Geology and Soil Science, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: Karel Drápela Author-Workplace-Name: Institute of Forest Management and Applied Geoinformatics, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Title: A GLMER-based pedotransfer function expressing the relationship between total organic carbon and bulk density in forest soils Abstract: Owing to its role in mitigating CO2 in the atmosphere, the total organic carbon (TOC) stock of soil, a key component of the terrestrial carbon cycle, is of significant interest as regards climate change. To determine TOC stock, it is first necessary to determine the soil's bulk density (BD), determined through intact soil sampling; however, in forest soils, it can be difficult to determine BD in soils with high levels of stoniness and/or tree root coverage. Furthermore, the method is time-consuming and labour-intensive, making it impractical for studies over large areas. In such cases, BD can be determined using a pedotransfer function (PTF) expressing the relationship between forest soil TOC and BD. The aim of this study was to determine a forest soil PTF using actual data obtained from 777 soil pits dug as part of the Czech Republic's National Forest Inventory (NFI). Within the NFI, BD is assessed from undisturbed core samples, while TOC is assessed from mixed samples from the same soil genetic horizons. Both generalised linear (GLM) and generalised linear mixed-effects (GLMER) models were used, with the final GLMER model best expressing the relationship for individual natural forest areas within the NFI dataset. The GLMER-based PTF described in this study can be widely applied to accurately estimate soil BD via TOC concentration at temperate forest sites where stoniness and/or root cover previously made it technically impossible to take undisturbed samples using standard methods. Keywords: carbon stock, climate change, Czech National Forest Inventory, Czech natural forest areas, soil properties, soil stoniness Journal: Journal of Forest Science Pages: 619-633 Volume: 70 Issue: 12 Year: 2024 DOI: 10.17221/48/2024-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/48/2024-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202412-0002.txt Handle: RePEc:caa:jnljfs:v:70:y:2024:i:12:id:48-2024-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Marie Zahradníková Author-Workplace-Name: Forest Protection Service, Forestry and Game Management Research Institute, Jíloviště-Strnady, Czech Republic Author-Name: Jaroslav Dostál Author-Workplace-Name: Department of Forest Tree Species Biology and Breeding, Forestry and Game Management Research Institute, Jíloviště-Strnady, Czech Republic Author-Name: Petr Zahradník Author-Workplace-Name: Forest Protection Service, Forestry and Game Management Research Institute, Jíloviště-Strnady, Czech Republic Title: The sex ratio of spruce bark beetles - Ips typographus (Coleoptera: Curculionidae: Scolytinae) captured in different types of traps Abstract: In forest protection, various types of trap systems are used against spruce bark beetles to treat the foci of infested areas. Traditionally, these include pheromone traps, treated trap trees, and recently also the application of Storanet insecticide nets used for the sanitation of infested wood (trees), which also serve as treated trap trees when pheromones are applied, and the Trinet P system, a variation to a treated trap tree - a tripod. On an aluminium tripod, there is a Storanet insecticide net baited with a pheromone dispenser similar to other types of trap systems. The sex ratio proves to be a significant aspect in the assessment of individual types of trap systems. It is more favourable to catch a larger number of female individuals given that they bear the future development of the population. With a higher number of captured male individuals, the number of females per one male in the insect gallery increases, and the population cannot be reduced sufficiently. The results show that all three types of measures can be characterised by a lower ratio of captured males (approximately 40%) and a higher representation of females (around 60%). Differences in individual types of trap systems are insignificant. Keywords: pheromone trap, Storanet, trap system, treated trap tree Journal: Journal of Forest Science Pages: 603-609 Volume: 70 Issue: 12 Year: 2024 DOI: 10.17221/55/2024-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/55/2024-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202412-0003.txt Handle: RePEc:caa:jnljfs:v:70:y:2024:i:12:id:55-2024-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Jaroslav Holuša Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: Kamil Holý Author-Workplace-Name: Crop Research Institute, Prague, Czech Republic Title: The distribution of Castanea sativa and its ability to regenerate in the Czech Republic Abstract: Castanea sativa is a type of cultivated chestnut tree found in the Czech Republic, growing in both lowland and midland regions. These trees are usually planted individually or in pairs, with over half of the plantings located in urban areas. One-fifth of chestnut trees thrive in parks, while chestnut orchards or forest stands make up only one-tenth of the areas where chestnut trees are located. In the Czech Republic, approximately 30 ha are covered by chestnut trees. Regeneration of chestnut trees occurs in only 6% of the localities due to regular lawn mowing. However, 40% of the surveyed forests showed signs of regeneration, demonstrating the species' ability to regenerate under Central European climate conditions. Keywords: Central Europe, European chestnut, sweet chestnut, urban greening Journal: Journal of Forest Science Pages: 634-637 Volume: 70 Issue: 12 Year: 2024 DOI: 10.17221/71/2024-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/71/2024-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202412-0004.txt Handle: RePEc:caa:jnljfs:v:70:y:2024:i:12:id:71-2024-JFS