Template-Type: ReDIF-Article 1.0 Author-Name: Jiří Šefl Author-Workplace-Name: Forest Management Institute, Brandýs nad Labem, Czech Republic Author-Name: Veronika Mottlová Author-Workplace-Name: Faculty of Environment, Jan Evangelista Purkyně University in Ústí nad Labem, Ústí nad Labem, Czech Republic *Coresponding author: jurisefl@seznam.cz Author-Name: Iva Schořálková Author-Workplace-Name: Faculty of Environment, Jan Evangelista Purkyně University in Ústí nad Labem, Ústí nad Labem, Czech Republic *Coresponding author: jurisefl@seznam.cz Title: Bud blight (Gemmamyces piceae) in the eastern part of the Krušné hory Mountains Abstract: A survey was carried out in 2013-2019 on the life cycle of the bud blight Gemmamyces piceae (Borthw.) Casagrande and the trend assessment in the infestation of the Colorado blue spruce Picea pungens Engelm. stands. Four ecologically different plots were chosen in the Fláje region in the Eastern part of the Krušné hory Mountains. The pycnidia were formed at the beginning of June on buds infested the previous year. Later, in the second half of June, they formed on the spring attack buds. Conidia occurred in the first week of July on the buds of the old infestation, or later in the case of the spring attack buds, in the middle of July. The production of conidia lasted till the end of September. Ascospores occurred in the middle of July and were produced until the end of September. The ability of host trees to sprout became continually weaker, along with the defoliation progress. A distinct decline in the sprouting ability was noticed on stands with a dense crown canopy and on stands with competition of broad-leaved trees - with an admixture of birch. Keywords: Colorado blue spruce, disease development, epidemic, Gemmamyces piceae Journal: Journal of Forest Science Pages: 309-317 Volume: 66 Issue: 8 Year: 2020 DOI: 10.17221/11/2020-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/11/2020-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202008-0001.txt Handle: RePEc:caa:jnljfs:v:66:y:2020:i:8:id:11-2020-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Abdul Lateef Khanday Author-Name: Abdul Ahad Buhroo Author-Workplace-Name: Section of Entomology, Department of Zoology, Faculty of Biological Sciences, University of Kashmir, Srinagar, India Title: Life cycle and biology of Pityogenes scitus Blandford, 1893 (Coleoptera: Curculionidae: Scolytinae), a pest of Pinus wallichiana in Kashmir, India Abstract: The bark beetle, Pityogenes scitus Blandford, 1893 (Coleoptera: Curculionidae: Scolytinae) is one of the main pests in Pinus wallichiana A.B. Jackson, 1938 (Pinaceae) stands, and it has also been found on other Oriental Pinaceae species. This pest is aggressive and has caused significant loss of host trees, but little is known of its biology and ecology. Based on the field and laboratory observations, this study describes the detailed bioecology of P. scitus. This beetle pest overwinters in larval stage on blue pine (P. wallichiana) trees in Kashmir. After emergence, the adults fly to suitable trees and undergo maturation feeding for 4-6 days. Reproduction is polygamous type. After mating, each of the females makes one gallery with an average length 2.30 (± 0.41 SD) cm. The female lays 26.53 (± 6.32 SD) eggs on an average. The eggs hatch in 5 to 10 days. The larvae have 5 instars and complete their development in 18 to 28 days constructing larval galleries 1.76 (± 0.25 SD) cm in length. The larvae pupate for 13-22 days and finally the adults emerge to attack new suitable trees. The adults live for 28-40 days and the total life-span of this species ranges from 66 to 92 days. The seasonal distribution of various developmental stages and the number of generations were also recorded (5 generations (the last a partial one) per year in Kashmir). In general, the life cycle of P. scitus is similar to those described for other Pityogenes Bedel, 1 888 species. Keywords: bark beetle, morphometry, seasonal history, Scolytinae Journal: Journal of Forest Science Pages: 318-328 Volume: 66 Issue: 8 Year: 2020 DOI: 10.17221/8/2020-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/8/2020-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202008-0002.txt Handle: RePEc:caa:jnljfs:v:66:y:2020:i:8:id:8-2020-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Ekaterina Podolskaia Author-Name: Dmitriy Ershov Author-Workplace-Name: Laboratory of Forest Ecosystems Monitoring, Center for Forest Ecology and Productivity, Russian Academy of Sciences (CEPF RAS), Moscow, Russia Author-Name: Konstantin Kovganko Author-Workplace-Name: Laboratory of Forest Ecosystems Monitoring, Center for Forest Ecology and Productivity, Russian Academy of Sciences (CEPF RAS), Moscow, Russia Title: Automated construction of ground access routes for the management of regional forest fires Abstract: Modern geospatial technologies and permanently updated wildfire monitoring datasets are the basis of improving forest firefighting on different administrative scales. One of the tasks is to use the spatial representation of forest fire locations during the fire season and offer timely suitable technical options for accessing them. We developed a GIS technology to create forest fire ground access routes for special firefighting vehicles moving from a ground firefighting base (fire-chemical station) to the place of the forest fire detection; the technology includes a statistical and geospatial accessibility analysis of the routes. The key data are a transport model consisting of public roads and forest glades on the regional scale. We described the main principles of the transport model construction and usage, and their implementation for the Russian Federal Districts. An access routes database for the 2002-2019 fire seasons, a central part of the Siberian Federal District, was produced and analysed. By using a hot spot analysis, we confirmed that forest fires are poorly accessible away from the centre of the Siberian District. The created road accessibility maps show "a proposed ground access zone" within the key area to fight forest fires for the fire seasons to come. Keywords: access route, GIS, forest fire, fire-chemical station, forest management Journal: Journal of Forest Science Pages: 329-338 Volume: 66 Issue: 8 Year: 2020 DOI: 10.17221/59/2020-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/59/2020-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202008-0003.txt Handle: RePEc:caa:jnljfs:v:66:y:2020:i:8:id:59-2020-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Viktoriia Lovynska Author-Workplace-Name: Department of Parks and Gardens, Faculty of Agronomy, Dnipro State Agrarian and Economic University, Dnipro, Ukraine Author-Name: Yuriy Buchavyi Author-Workplace-Name: Department of Ecology and Technologies of Environmental Protection, National Technical University "Dnipro Polytechnic", Dnipro, Ukraine Author-Name: Petro Lakyda Author-Workplace-Name: Education and Research Institute of Forestry and Landscape Park Management, National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine Author-Name: Svitlana Sytnyk Author-Workplace-Name: Department of Forest Measurement and Forest Management, National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine Author-Name: Yuriy Gritzan Author-Workplace-Name: Department of Parks and Gardens, Faculty of Agronomy, Dnipro State Agrarian and Economic University, Dnipro, Ukraine Author-Name: Roman Sendziuk Author-Workplace-Name: Department of Forest Measurement and Forest Management, National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine Title: Assessment of pine aboveground biomass within Northern Steppe of Ukraine using Sentinel-2 data Abstract: The present study offers the results of the spectral characteristics, calculated vegetative indices and biophysical parameters of pine stands of the Northern Steppe of Ukraine region obtained using Sentinel-2 data. For the development of regression models with the prediction of the biomass of pine forests using the obtained spectral characteristics, we used the results of the assessment of the aboveground biomass by the method of field surveys. The results revealed the highest correlation relations between the parameters of the general and trunk biomass with the normalised difference vegetation index (NDVI) and transformed vegetation index (TVI) vegetative indices and the fraction of absorbed photosynthetic active radiation (FARAP) and fraction of vegetation cover (FCOVER) biophysical parameters. To generate the models of determining the forest aboveground biomass (AGB), we used both the single- and two-factor models, the most optimum of which were those containing the NDVI predictor separately and in combination with the FCOVER predictor. The predicted values of the total AGB for the mentioned models equalled 32.5 to 236.3 and 39.9 to 253.4 t.ha-1. We performed mapping of the AGB of pine stands of the Northern Steppe using multi-spectral Sentinel-2 images, particularly the spectral characteristics of their derivatives (vegetative indices, biophysical parameters). This study demonstrated promising results for conducting an AGB-mapping of pine woods in the studied region using free-access resources. Keywords: Pinus sylvestris L., spectral indices, remote sensing, allometric regression, Steppe zone Journal: Journal of Forest Science Pages: 339-348 Volume: 66 Issue: 8 Year: 2020 DOI: 10.17221/28/2020-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/28/2020-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-202008-0004.txt Handle: RePEc:caa:jnljfs:v:66:y:2020:i:8:id:28-2020-JFS