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Now showing items 121-130 of 143
Is the quality of the non-native Douglas-fir wood produced in the Czech forests comparable to native softwoods?
(North Carolina State University, 2019)
Important physical and mechanical properties were evaluated for Douglas-fir wood produced in a non-native environment. The specimens were obtained from 15 healthy co-dominant trees growing in three different sites located ...
Evaluation of parameters influencing the withdrawal strength of oak and beech dowels
(North Carolina State University, 2020)
The withdrawal strength of plain dowels with nominal diameter of 8 mm was compared with the spiral dowels manufactured from beech (Fagus sylvatica L.) and oak wood (Quercus robur L.). The test specimens were tested after ...
Phytophthora, Nothophytophthora and Halophytophthora diversity in rivers, streams and riparian alder ecosystems of Central Europe
(Springer Heidelberg, 2023)
Waterways are ideal pathways for Phytophthora dispersal and potential introduction to terrestrial ecosystems. While many Phytophthora species from phylogenetic clades 6, 9 and 10 are predominant oomycetes in watercourses ...
Intervention analysis of COVID-19 pandemic impact on timber price in selected markets
(Elsevier Science BV, 2024)
Using intervention analysis and time series of roundwood prices from ten European and North American countries, we analyzed the impact of the COVID-19 pandemic on the movement of timber prices. The study material consists ...
Fomes fomentarius and F. inzengae-A Comparison of Their Decay Patterns on Beech Wood
(MDPI AG (Multidisciplinary Digital Publishing Institute-MDPI), 2023)
Wood-decaying fungi are responsible for the degradation of wood and the alteration in its material properties. Fomes fomentarius (L.) Fr. is one of the most common white-rot fungi colonising coarse wood and standing trees. ...
Development of Douglas fir merchantable stem volume model in the conditions of the Czech Republic
(Česká akademie zemědělských věd, 2023)
A precise merchantable stem volume model of Douglas fir [Pseudotsuga menziesii (Mirb.) Franco] is missing in the Czech Republic. The aim of this study was to fit a new model through the reparametrization of volume equations ...
Temporal and spatial variability of phloem structure in Picea abies and Fagus sylvatica and its link to climate
(John Wiley & Sons, Inc., 2024)
Using a unique 8-year data set (2010-2017) of phloem data, we studied the effect of temperature and precipitation on the phloem anatomy (conduit area, widths of ring, early and late phloem) and xylem-ring width in two ...
Properties of lightweight particleboard made with sunflower stalk particles in the core layer
(Elsevier Science BV, 2023)
In this study we assessed the efficacy of manufacturing lightweight particleboards using sunflower (Helianthus annuus L.) stalk particles. Three-layer lightweight particleboards with target densities of 350, 450 and 550 ...
Effect of different stand densities on xylem and phloem formation in Norway spruce plantations
(Brill, 2023)
Preliminary results of an investigation of the thinning effect on Norway spruce tree growth in terms of xylogenesis and phloemogenesis are presented. Three plots were selected where the stand densities were reduced by ...
Comparison of Methods for Estimating Damage by Wild Ungulates on Field Crops
(MDPI AG (Multidisciplinary Digital Publishing Institute-MDPI), 2023)
High numbers of large ungulates are locally accompanied by high levels of damage to field crops, causing economic losses and increased costs for the protection of agricultural fields. Quantifying the levels of damage can ...