Template-Type: ReDIF-Article 1.0 Author-Name: J. Novák Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště-Strnady, Opočno Research Station, Czech Republic Author-Name: M. Slodičák Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště-Strnady, Opočno Research Station, Czech Republic Title: Structure and accumulation of litterfall under Norway spruce stands in connection with thinnings Abstract: The effect of thinning on the structure and accumulation of litterfall and holorganic horizons (L, F, H) in young Norway spruce stands was investigated. The research was conducted on a Norway spruce thinning experiment Polom (established in 1980) in the Orlické hory Mts. (north-eastern part of the Czech Republic). In 1992, the monitoring of litterfall started on an unthinned control stand (plot 1) and on a comparative stand with very heavy thinning from below (plot 3). During the period of observation (age of the stand 27-37 years), the total weight of litterfall ranged between 1,800 and 4,800 kg/ha. The amount of litterfall was partly influenced by climatic factors (precipitation and temperature), growth processes (basal area increment) and thinning regimes in individual years. The results of the investigations showed that dry biomass accumulated under a 36 years old Norway spruce stand ranged from 9,200 to 11,300 kg/ha in horizon L, from 37,000 to 38,200 kg/ha in horizon F and from 138,300 to 146,400 kg/ha in horizon H. The quality (content of basic nutrients) of litterfall and material from holorganic horizons are discussed. Keywords: litterfall, nutrients, thinning, Norway spruce Journal: Journal of Forest Science Pages: 101-108 Volume: 50 Issue: 3 Year: 2004 DOI: 10.17221/4605-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4605-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200403-0001.txt Handle: RePEc:caa:jnljfs:v:50:y:2004:i:3:id:4605-JFS Template-Type: ReDIF-Article 1.0 Author-Name: L. Rokytová Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry, Brno, Czech Republic Author-Name: E. Kula Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry, Brno, Czech Republic Author-Name: L. Kodarová Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry, Brno, Czech Republic Author-Name: A. Pešlová Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry, Brno, Czech Republic Title: Feeding of the willow leaf beetle Lochmaea capreae L. (Coleoptera, Chrysomelidae) on leaves of birch (Betula pendula Roth) contaminated by heavy metals Abstract: The effect of contamination of birch (Betula pendula Roth) leaves with heavy metals on the feeding of imagoes of the willow leaf beetle (Lochmaea capreae L.) was studied under laboratory conditions. The imagoes preferred feeding on leaves less contaminated by Cd, Mn and Zn. The Pb content was tolerated on all the studied levels. The repellent effect of Zn 8,000 µg/mlin the Pb + Zn regime was compensated by Pb 500 in relation to Mn 10,000 Keywords: Keywords: Lochmaea capreae, cadmium, manganese, lead, zinc, feed preference, laboratory conditions Journal: Journal of Forest Science Pages: 109-117 Volume: 50 Issue: 3 Year: 2004 DOI: 10.17221/4606-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4606-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200403-0002.txt Handle: RePEc:caa:jnljfs:v:50:y:2004:i:3:id:4606-JFS Template-Type: ReDIF-Article 1.0 Author-Name: L. Jankovský Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry, Brno, Czech Republic Author-Name: J. Beránek Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry, Brno, Czech Republic Author-Name: A. Vágner Author-Workplace-Name: Faculty of Forestry and Wood Technology, Mendel University of Agriculture and Forestry, Brno, Czech Republic Title: Dead wood and mycoflora in Nature Reserve Polom, Protected Landscape Area Železné hory Abstract: Activity of fungi participating in the dead wood decomposition was studied in the Velký Polom Nature Reserve, Protected Landscape Area Železné hory. Two game-proof fences of an area of 0.30 ha (570 m alt.) and 0.19 ha (620 m alt.) were used as permanent sample plots. In both the plots, activities were monitored of wood-destroying fungi in 126.82 m3 dead wood, 104.05 m3 of which were in beech. After conversion to an area, the volume amounts to 258.82 m3 per ha. In the whole reserve, almost 220 species of macromycetes were recorded in the course of a mycological survey. Wood-destroying fungi are the dominant component of mycoflora representing more than 50% identified taxa of in the period under study. The proportion of mycorrhizal fungi amounted to 14%. A series of macromycetes considered to be saprophytes is bound to products of wood decomposition. Fomes fomentarius (L.) Fr., Fomitopsis pinicola (Sowerby) P. Karst., Ustulina deusta (Fr.) Petrak, Hypoxylon fragiforme (Pers.) Kickx, Ganoderma lipsiense (Batsch) Atk. and the genus Armillaria were the predominant species of wood-decaying fungi. As for rare macro-fungi, it is possible to mention Ascotremella faginea (Peck) Seaver, Stropharia albocrenulata (Peck) Kreisel and Tricholomopsis decora (Fr.) Singer. Keywords: dead wood, wood decomposition, mycoflora, wood-decaying fungi Journal: Journal of Forest Science Pages: 118-134 Volume: 50 Issue: 3 Year: 2004 DOI: 10.17221/4607-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4607-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200403-0003.txt Handle: RePEc:caa:jnljfs:v:50:y:2004:i:3:id:4607-JFS Template-Type: ReDIF-Article 1.0 Author-Name: V. Mareš Author-Workplace-Name: Technical Faculty, Czech University of Agriculture, Prague, Czech Republic Author-Name: J. Blahovec Author-Workplace-Name: Technical Faculty, Czech University of Agriculture, Prague, Czech Republic Title: Variation of the tree ring micro-hardness demonstrated on spruce wood Abstract: Micro-hardness was used for the study of wood structure (Norway spruce) in the line perpendicular to tree rings (radial surface). The steel indentor 0.25 mm in diameter with flat head was used for this purpose. The individual penetration tests were performed at constant velocity 0.0167 mm/sinto a depth of 0.3 mm. Local wood strength was defined as the mean pressure on the indentor head at 0.02 mm penetration. The set of tests (~ 320) gave information about stress variation in dependence on the location of the test place in the tested surface. The stress was understood as a parameter describing the growth properties of wood similarly like the density usually used in dendrochronology. The measured strength variation is in agreement with visually observed tree rings. The acquired data made it possible to determine the mean characteristic points of the tree ring as well as the development of the parameters in dependence on the weather variations. Keywords: wood, tree ring, micro-hardness, penetration, strength Journal: Journal of Forest Science Pages: 135-141 Volume: 50 Issue: 3 Year: 2004 DOI: 10.17221/4608-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4608-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-200403-0004.txt Handle: RePEc:caa:jnljfs:v:50:y:2004:i:3:id:4608-JFS Template-Type: ReDIF-Article 1.0 Author-Name: J. Štůsek Author-Workplace-Name: Faculty of Economic and Management, Czech University of Agriculture, Prague, Czech Republic Title: Application of logistics in woodworking industry Abstract: The paper is focused on logistics. The importance of the logistic chain management is emphasized as it becomes a crucial competitive success factor. The total corporate costs and customer service quality are dependent on the structure and communication within this chain. Using a concrete example, several results of the establishment of the logistic approach in the woodworking industry are mentioned in the paper. It has to be emphasized that the application of the logistic principles in the industry has its own specificities arising mainly from the biological character of processes providing and manufacturing the basis resource. A solution of the supply - purchase chain is provided on the basis of an example of the company Dřevovýroba. Keywords: logistics, value chain, logistic benchmarking and controlling Journal: Journal of Forest Science Pages: 142-148 Volume: 50 Issue: 3 Year: 2004 DOI: 10.17221/4609-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/4609-JFS.html File-Format: text/html Handle: RePEc:caa:jnljfs:v:50:y:2004:i:3:id:4609-JFS