Template-Type: ReDIF-Article 1.0
Author-Name: Hana Prknová
Title: The effect of the Sequoiadendron giganteum (Lindl.) Buchholz cone crystals on germination
Abstract: The cones of the giant sequoia contain red, water-soluble crystalline substances known as cone crystals. The inhibitory effect of this extracted material on Norway spruce, Scots pine and European larch germination was newly examined. Sown seed representative samples without and with added cone crystals were compared after their incubation in the same appropriate conditions. All these cases have brought compelling evidence that cone crystals totally inhibit germination. However, the chemically inhibited seeds being rinsed afterwards germinated very well. This switch effect caused by the cone crystals of the three above-mentioned conifers proved to be a nonspecific tool. Seeds of the giant sequoia, naturally affected by the cone crystals, were sown as rinsed and non-rinsed samples. Both the samples, grown on a wet peat substrate in appropriate conditions for 16 weeks, exhibited an equal, yet very low viability of 1.3% at the same time. This low number, fixed in seeds of the tree being far from the ecological optimum, does not allow any disputation with other authors.
Keywords: cone pigment, giant sequoia, inhibitory effect, tannin
Journal: Journal of Forest Science
Pages: 203-208
Volume: 65
Issue: 6
Year: 2019
DOI: 10.17221/43/2019-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/43/2019-JFS.html
File-Format: text/html
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Handle: RePEc:caa:jnljfs:v:65:y:2019:i:6:id:43-2019-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: Ihor Kozak
Author-Workplace-Name: Department of Landscape Ecology, Faculty of Mathematics Informatics and Landscape Designs, John Paul II Catholic University of Lublin, Lublin, Poland
Author-Workplace-Name: Department of Biology and Ecology, Faculty of Natural Science, Vasyl Stefanyk Prycarpathian National University, Ivano-Frankivsk, Ukraine
Author-Name: Taras Parpan
Author-Workplace-Name: Ukrainian Research Institute for Mountain Forestry, Ivano-Frankivsk, Ukraine
Title: Forecasting drying up of spruce forests in Transcarpathia (Ukraine) using the FORKOME model
Abstract: This paper presents the results of analysis of drying up of spruce stands obtained by the use of the FORKOME computer model. The verification of this model was conducted with field data from spruce-dominated mixed forests in Transcarpathia (Ukraine). The forecast of drying up, based on the latest version of the simulation of FORKOME computer model, allowed to evaluate results regarding bioclimatic effects on the displacement, growth, survival and death of spruce and other tree species. The modelling was performed on the basis of statistical Monte Carlo simulations. The forecast of the spruce stand dynamics was conducted for 100-year period along with control and warm-dry scenarios. The analysis has revealed the rapid decrease of biomass in the first decade as a result of spruce decline. Auto-correlation analysis of spruce and cross-correlation analysis of the relation between tree species were conducted as well.
Keywords: dynamics, biomass, number of trees, simulation
Journal: Journal of Forest Science
Pages: 209-217
Volume: 65
Issue: 6
Year: 2019
DOI: 10.17221/30/2019-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/30/2019-JFS.html
File-Format: text/html
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Handle: RePEc:caa:jnljfs:v:65:y:2019:i:6:id:30-2019-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: Zoya Ozherelieva
Author-Name: Olga Emelianova
Author-Workplace-Name: Russian Research Institute of Fruit Crop Breeding (VNIISPK), Orel, Russia
Title: The reaction of different Sorbus L. species to low temperatures during thaw in the Orel region
Abstract: Five Sorbus L. species of different ecological and geographical origin growing in the VNIISPK arboretum were studied. The Institute is located 368 km southwest of Moscow, on the Central Russian upland in the European part of Russia. The studies were carried out in 2014-2016. The reaction of different Sorbus L. species to a three-day thaw +2°C with a subsequent decrease in temperature to -25°C in February and -30°C in March was studied in order to identify adapted species to the climatic conditions of the Orel region for use in ornamental horticulture. As a result of the experiment, we recommend Sorbus aria (L.) Crantz, Sorbus aucuparia L. and Sorbus alnifolia (Siebold. et Zucc.) K. Koch. as adapted species for the Orel region to create sustainable landscape compositions.
Keywords: artificial freezing, adaptation, frost hardiness
Journal: Journal of Forest Science
Pages: 218-225
Volume: 65
Issue: 6
Year: 2019
DOI: 10.17221/8/2019-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/8/2019-JFS.html
File-Format: text/html
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Handle: RePEc:caa:jnljfs:v:65:y:2019:i:6:id:8-2019-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: Hana Krejčí
Author-Workplace-Name: University of Life Sciences Prague, Faculty of Economics and Management, Department of Trade and Accounting, Prague, Czech Republic
Author-Name: Marta Stárová
Author-Workplace-Name: University of Life Sciences Prague, Faculty of Economics and Management, Department of Trade and Accounting, Prague, Czech Republic
Author-Name: Ivan Hrbek
Author-Workplace-Name: University of Life Sciences Prague, Faculty of Economics and Management, Department of Languages, Prague, Czech Republic
Author-Name: Miroslava Navrátilová
Author-Workplace-Name: University of Life Sciences Prague, Faculty of Economics and Management, Department of Trade and Accounting, Prague, Czech Republic
Author-Name: Markéta Beranová
Author-Workplace-Name: University of Life Sciences Prague, Faculty of Economics and Management, Department of Trade and Accounting, Prague, Czech Republic
Title: The perception of forests by the Czech Republic general public
Abstract: Forests as a part of landscape do not fulfil their economic function (timber production) only but a lot of other non-economic functions, especially ecological ones. Both economic and non-economic functions are indisputable and equally important for society. The aim of this paper is to identify current attitudes to forest perceptions by citizens in the Czech Republic. Primary data were obtained by means of a questionnaire research survey which was carried out in 2018. Altogether 824 respondents took part in this survey (n = 824). From the results follows that approximately 70% of respondents visit forest at least three times a month. In connection with this, the relationship between respondents' forest visit frequency and the forest density in the region where they come from was confirmed. 60% of respondents consider the forest exploitation and forest management to be the most important cause of damage and threats to forest. In relation to forest, 46% of respondents consider forest conservation and protection to be the most important topics.
Keywords: forest functions, public opinion, recreational function of forest, damage, threat to forests, forest visitors
Journal: Journal of Forest Science
Pages: 226-233
Volume: 65
Issue: 6
Year: 2019
DOI: 10.17221/138/2018-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/138/2018-JFS.html
File-Format: text/html
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Handle: RePEc:caa:jnljfs:v:65:y:2019:i:6:id:138-2018-JFS

Template-Type: ReDIF-Article 1.0
Author-Name: Brianna Heeley
Author-Workplace-Name: Faculty of Science, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
Author-Name: Sanjeev Kumar Srivastava
Author-Workplace-Name: Faculty of Science, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
Author-Name: Mohammad R. Ghaffariyan
Author-Workplace-Name: Forest Industries Research Centre, University of the Sunshine Coast, Sippy Downs, Queensland, Australia
Title: International assessment of bioenergy stakeholders research requirements of GIS based biomass analytics
Abstract: As the demand and production for renewable energies increases there is a growing need to research new technologies to increase the efficiency, productivity and profitability of production. This study aimed to investigate the priorities of bioenergy stakeholders on Geographic Information Systems based research in a variety of countries including a number throughout Europe, the United States and Australia. A voluntary questionnaire was distributed internationally to bioenergy stakeholders to discern perceived usefulness ratings for various analytics. Participants rated Economic analytics as the most useful followed by Environmental, Product quality and Social assessments. Therefore, future research within the bioenergy sector should be aimed at increasing the economic viability of bioenergy and decreasing its environmental impact. There was a difference between analytic preference and the thirteen countries surveyed and the stakeholder type however, this relationship was not significant.
Keywords: analytic preferences, economic assessment, environmental assessment, product quality, social assessment, geographic information systems
Journal: Journal of Forest Science
Pages: 234-246
Volume: 65
Issue: 6
Year: 2019
DOI: 10.17221/31/2019-JFS
File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/31/2019-JFS.html
File-Format: text/html
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Handle: RePEc:caa:jnljfs:v:65:y:2019:i:6:id:31-2019-JFS