Journal of Forest Science, 2020 (vol. 66), issue 10
The Level-of-Growing-Stock (LOGS) study on thinning ponderosa pine forests in the US West: A long-term collaborative experiment in density managementReview
Jianwei W. Zhang, William W. Oliver, Russell T. Graham, W. Keith Moser
J. For. Sci., 2020, 66(10):393-406 | DOI: 10.17221/72/2020-JFS 
The Levels-of-Growing-Stock study for ponderosa pine was a collective effort among western Research Stations within the US Forest Service. The experiment was established to test sustainable productivity across a wide range of densities by periodically thinning the plots. Beyond the original purposes for wood production, contemporary applications of these long-term studies have been to determine stand density effects on (i) both overstory and understory responses to stand development of even-aged ponderosa pine, (ii) biomass accumulation and carbon sequestration, (iii) plant diversity and wildlife habitats, and (iv)...
Effect of gap size on tree species diversity of natural regeneration - case study from Masaryk Training Forest Enterprise KřtinyOriginal Paper
Maame Esi Hammond, Radek Pokorný, Lumir Dobrovolný, Nina Hiitola, Michal Friedl
J. For. Sci., 2020, 66(10):407-419 | DOI: 10.17221/78/2020-JFS
Forest gaps remain the optimal forest management practice in modern forestry. Upon all the physical properties of forest gaps, the 'gap size' feature stands out as an essential property. The effect of gap size on tree species composition and diversity of natural regeneration in forest gaps of different sizes was investigated. Eight research forest gaps were selected from the Training Forest School Enterprise, also called Masaryk Forest in Křtiny, a temperate mixed forest in the Czech Republic. By given gap sizes, small (< 700 m2) and large gaps (≥ 700 m2) were defined. Forty-one (41) regeneration microsites (RSs) of 1 m2...
Entomopathogenic fungi of the genus Beauveria and their pathogenicity to Ips typographus (Coleoptera: Curculionidae) in the Vitosha National Park, BulgariaOriginal Paper
Marek Barta, Danail Takov, Daniela Pilarska, Danail Doychev, Miriam Kádasi Horáková
J. For. Sci., 2020, 66(10):420-435 | DOI: 10.17221/123/2020-JFS
Ips typographus is a serious pest for forestry in Eurasia. Effective control is difficult due to its cryptic habits and insect pathogenic microorganisms, including entomopathogenic fungi that are believed to be a promising alternative to the traditional control measures of this pest. In 2018, diversity of entomopathogenic fungi of the genus Beauveria was studied in populations of I. typographus in the Vitosha National Park, Bulgaria. Two species, B. bassiana and B. caledonica, were identified and 33 in vitro strains were obtained. Phylogenetic positions of the strains were evaluated according to...
Composition and structure of regrowth forests on abandoned agricultural landOriginal Paper
Irina N. Volkova, Alexander Solodunov, Larisa N. Kondratenko
J. For. Sci., 2020, 66(10):436-442 | DOI: 10.17221/100/2020-JFS
Overgrowing of agricultural land by forest in Russia is a large-scale process. This study aims to examine the composition and structure of forests that took over abandoned agricultural lands in Belorechensky district, Krasnodar Krai (Russia). The research on 4 farmland plots was carried out in 2018. At the time of observation agricultural land has been abandoned for 7 to 8 years. Research methodology was developed to determine parameters such as tree and shrub density per ha, height and age at 50 m and up to 100 m from the forest. Two study sites were dominated by mesophytes, whilst the other two sites were invaded by xerophytes. Xerophytic landscapes...