Template-Type: ReDIF-Article 1.0
Author-Name: J. Stejskalová
Author-Workplace-Name: Department of Silviculture, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
Author-Name: I. Kupka
Author-Workplace-Name: Department of Silviculture, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
Author-Name: S. Miltner
Author-Workplace-Name: Department of Silviculture, Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
Title: Effect of gibberellic acid on germination capacity and emergence rate of Sycamore maple (Acer pseudoplatanus L.) seeds
Abstract: Seedlots of sycamore maple (Acer pseudoplatanus L.) originating from three different provenance regions were collected in autumn 2012. The seed quality, namely vitality and germination rate, was assessed according to Czech conventions. There were four replications within each seedlot, i.e. twelve treatments altogether for each experimental variant. The effect of gibberellic acid on germination and vitality was studied using three treatments including a control for germination capacity and three treatments including a control for emergence rate. The data shows that the gibberellic acid did not substitute for the stratification procedure as it did not improve the germination capacity of seeds with pericarp when compared with stratified seeds; however for seeds without pericarp the gibberellic acid improved the germination capacity to the level of stratified seeds. The data also shows the positive influence of gibberellic acid on emergence rate. All variants where acid gibberellic was applied have a statistically higher emergence rate than the control. The increase was about 50% higher than in the control, i.e. without the influence of gibberellic acid.
Keywords: sycamore maple, seed quality, vitality, stratification, pre-sowing treatment, seed humidity
Journal: Journal of Forest Science
Pages: 325-331
Volume: 61
Issue: 8
Year: 2015
DOI: 10.17221/22/2015-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/22/2015-JFS.html
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Handle: RePEc:caa:jnljfs:v:61:y:2015:i:8:id:22-2015-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: J. Foit
Author-Workplace-Name: Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
Title: The occurrence of early-arriving saproxylic beetles on Scots pine logging residues generated by thinning
Abstract: The occurrences of early-arriving saproxylic beetles were examined on 1,200 fragments of Scots pine (Pinus sylvestris L.) logging residues generated by thinning in a single stand in the Drahanská Highlands in the Czech Republic. The felling was carried out on four dates in 2006 (February, May, August, November). The occurrence of early-arriving saproxylic beetles was investigated by peeling off the bark of logging residues during the first six months of the vegetative period following the felling. Beetle occurrence was significantly affected by felling date, logging residue type (trunk fragment, or branch thinner or thicker than 1 cm) and diameter. Only 16 species of early-arriving saproxylic beetles were found. The results indicate that the shaded and fairly uniform logging residues from thinning are probably of minor importance for the conservation of saproxylic beetles, but their presence might increase the risk of certain pest outbreaks (particularly, Pityogenes chalcographus [Linnaeus]). As an alternative to the removal of logging residues, the risk of the multiplication of this pest can be minimised if thinning is carried out in August (and probably also in September and October).
Keywords: bark- and wood-boring beetle, branch, felling date, pest, Pinus sylvestris, treetop
Journal: Journal of Forest Science
Pages: 332-338
Volume: 61
Issue: 8
Year: 2015
DOI: 10.17221/45/2015-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/45/2015-JFS.html
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Handle: RePEc:caa:jnljfs:v:61:y:2015:i:8:id:45-2015-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: T. Badal
Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
Author-Name: J. Kšica
Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
Author-Name: V. Vala
Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
Author-Name: D. Šafařík
Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic
Title: Energy yield of logging residues of the south-eastern region of the Czech Republic
Abstract: The study analyses data obtained from the production of energy chips from logging residues. Geographically, the data come from the south-eastern portion of the Czech Republic. 6,671 t of energy chips were analysed by means of samples, their total energy content being 63.92 TJ. Based on the results of laboratory analyses of samples of wood chips with energy contents, ratio (reference) variables were derived and can be used as input (basic) data for the modelling of the energy potential of logging residues of the territory.
Keywords: wood chips, renewable sources, energy potential
Journal: Journal of Forest Science
Pages: 339-344
Volume: 61
Issue: 8
Year: 2015
DOI: 10.17221/15/2015-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/15/2015-JFS.html
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Handle: RePEc:caa:jnljfs:v:61:y:2015:i:8:id:15-2015-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: H. Cvrčková
Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště, Czech Republic
Author-Name: P. Máchová
Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště, Czech Republic
Author-Name: J. Malá
Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště, Czech Republic
Title: Use of nuclear microsatellite loci for evaluating genetic diversity among selected populations of Abies alba Mill. in the Czech Republic
Abstract: The simple sequence repeats (SSR) method of DNA analysis was used to determine genetic diversity within and among silver fir (Abies alba Mill.) populations. Total genomic DNA was extracted from 250 Abies alba adult individuals collected from 8 important populations growing in different parts of the Czech Republic. Samples were screened using eight selected polymorphic nuclear microsatellite markers. PCR products were separated by capillary electrophoresis. Identified genetic loci were verified as reliable and polymorphic and were used for comparative genetic analyses of silver fir populations. The genotypic data from the adult trees implies genetic differences among the studied populations. The populations' genetic diversity expressed as Shannon's information index values was highest in the JD06 population from Hochwald. The lowest genetic diversity was in the JD02 population from Velké Polčané, Morávka. The longest genetic distance appeared between the JD02 (Velké Polčané, Morávka) and JD07 (Hojsova Stráž) populations. The closest genetic distance was between the JD01 (Babín) and JD03 (Vodslivy) populations.
Keywords: simple sequence repeats, silver fir populations, genetic variability and differentiation, genetic distance, gene reserves, DNA analysis
Journal: Journal of Forest Science
Pages: 345-351
Volume: 61
Issue: 8
Year: 2015
DOI: 10.17221/25/2015-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/25/2015-JFS.html
File-Format: text/html
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Handle: RePEc:caa:jnljfs:v:61:y:2015:i:8:id:25-2015-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: I. Bektaş
Author-Workplace-Name: Department of Forest Industrial Engineering, Faculty of Forestry, Kahramanmaraş Sütçüimam University, Avşar campus, Kahramanmaraş, Turkey
Title: The effect of some climate factors on dimensional stability in Pinus brutia
Abstract: This study investigated the effect of climate factors on dimensional stability in Pinus brutia Ten. wood in its natural range in the Mediterranean region of Turkey. For this purpose, test trees at approximately the same age and altitude were taken from five different climate regions of the Mediterranean. The results of the statistical analyses indicated that climatological factors had an important impact on dimensional stability in Calabrian pine wood. While there is a significant relation between the direction in which test samples from the test tree were obtained and the amounts of radial and tangential shrinkages, there is a non-significant relationship with the amounts of swellings. Regression analyses showed that volumetric shrinkage and swelling in some regions had a significant correlation with wood properties. Furthermore, differences in dimensional stability between the climatological factors could be attributed to the fast-growing plantations for arid zone forestry.
Keywords: Calabrian pine, shrinkage, swelling, directions, wood properties
Journal: Journal of Forest Science
Pages: 352-358
Volume: 61
Issue: 8
Year: 2015
DOI: 10.17221/33/2015-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/33/2015-JFS.html
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Handle: RePEc:caa:jnljfs:v:61:y:2015:i:8:id:33-2015-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: A. Mikulková
Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
Author-Name: M. Hájek
Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
Author-Name: M. Štěpánková
Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
Author-Name: M. Ševčík
Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic
Title: Forest certification as a tool to support sustainable development in forest management
Abstract: The concept of sustainable development is currently known and used in many contexts across a wide range of industries. Nevertheless, specific approaches to achieving the strategy of sustainability can be found in the individual sectors. The beginnings of sustainable management in forestry go back to the mid-18th century. Currently, certification systems contribute to sustainable behaviour in forests. In the Czech Republic, this concerns in particular PEFC and FSC certification systems. Both these certification systems include two different processes, forest management certification and chain of custody certification, i.e. including the wood-processing companies, where only certified wood must strictly be used. This article aims to evaluate the importance of certification for sustainable development in forestry. Given the clear superiority of the PEFC system in the Czech Republic, this paper focuses on the potential benefits for PEFC certificate holders. To determine the benefits of PEFC certification for sustainable development, a questionnaire survey was chosen. Assessment of the benefits for sustainable development depends on the subjective assessment of certification holders. The results suggest that the beneficial effect on sustainable development in forest management is clear in the forest property area of over 500 ha.
Keywords: PEFC, FSC, social aspects, sustainabilty, benefits of the certification
Journal: Journal of Forest Science
Pages: 359-368
Volume: 61
Issue: 8
Year: 2015
DOI: 10.17221/16/2015-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/16/2015-JFS.html
File-Format: text/html
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Handle: RePEc:caa:jnljfs:v:61:y:2015:i:8:id:16-2015-JFS