Template-Type: ReDIF-Article 1.0 Author-Name: V. Brygadyrenko Author-Workplace-Name: Department of Zoology and Ecology, Oles Honchar Dnipropetrovsk National University, Dnipropetrovsk, Ukraine Author-Name: V. Ivanyshyn Author-Workplace-Name: Department of Zoology and Ecology, Oles Honchar Dnipropetrovsk National University, Dnipropetrovsk, Ukraine Title: Changes in the body mass of Megaphyllum kievense (Diplopoda, Julidae) and the granulometric composition of leaf litter subject to different concentrations of copper Abstract: This article discusses the results of a 30-day experiment investigating the influence of copper which was introduced into the natural diet of Megaphyllum kievense (Lohmander, 1928) at concentrations of 10-1, 10-2, 10-3, 10-4, 10-5, 10-6, 10-7 and 10-8 mg Cu.g-1 dry leaf litter upon the body mass of the species. With copper contamination at a concentration 10-1 mg Cu.g-1 leaf litter the gain in body mass of M. kievense decreased by 69.8% (from 2.45 ± 1.28 to 0.74 ± 1.73 mg/individual per month). With an enrichment of the food substrate to 10-2-10-7 mg Cu.g-1 litter the increase in body mass of the millipedes did not differ from the control value (it was 88-146% of the control). However, the gain in body mass for 10-8 mg Cu.g-1 dry leaf litter was twice higher than in the control. The results of the experiment do not permit us to claim that the food consumption of M. kievense changed in response to varying concentrations of copper in the litter samples. The mass of the largest litter fragments (> 2.05 mm) decreased by 8.5% as a result of consumption by M. kievense and that of the average size fragments (0.70-1.05 mm) increased by 6.0% due to the grinding of the plant remains by M. kievense and enrichment through their excretory process. Keywords: heavy metals, litter invertebrates, polluted ecosystems, saprophages Journal: Journal of Forest Science Pages: 369-376 Volume: 61 Issue: 9 Year: 2015 DOI: 10.17221/36/2015-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/36/2015-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201509-0001.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:9:id:36-2015-JFS Template-Type: ReDIF-Article 1.0 Author-Name: J. Kašák Author-Workplace-Name: Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic 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 Author-Name: O. Holuša Author-Workplace-Name: Department of Forest Protection and Wildlife Management, Faculty of Forestry and Wood Technology, Mendel University in Brno, Brno, Czech Republic Author-Name: M. Knížek Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště, Czech Republic Title: Scolytus koenigi Schevyrew, 1890 (Coleoptera: Curculionidae): new bark beetle for the Czech Republic and notes on its biology Abstract: In November 2013, Scolytus koenigi Schevyrew, 1890 was recorded for the first time in the territory of the Czech Republic (Southern Moravia, at two localities near the village of Lednice). This finding represents the northernmost occurrence of this species in Central Europe. Because the knowledge of the S. koenigi bionomy is very limited, the characteristics of 52 galleries on 10 different host tree fragments were studied. The species was found to develop on dead or dying branches and thin trunks of maples Acer campestre L. and Acer platanoides L. with diameters of 3‒12 cm. All of the galleries comprised a 1.6-2.9 mm wide and 8-67 mm long single egg gallery oriented parallelly to the wood grain, with 18‒108 larval galleries emerging almost symmetrically on both sides of the egg gallery. Keywords: Acer, first record, galleries, maple, Scolytinae Journal: Journal of Forest Science Pages: 377-381 Volume: 61 Issue: 9 Year: 2015 DOI: 10.17221/65/2015-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/65/2015-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201509-0002.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:9:id:65-2015-JFS Template-Type: ReDIF-Article 1.0 Author-Name: L. Bezděčková Author-Workplace-Name: Forestry and Game Management Research Institute, Jíloviště, Czech Republic Author-Name: K. Matějka Author-Workplace-Name: IDS, Praha, Czech Republic Title: The quality and the depth of dormancy of beechnuts in individual stand groups with varying climatic conditions within a single unit of approval Abstract: The goal of this study was to analyse the quality and dormancy of beechnuts originating from different harvesting sites within large UA and to determine the homogeneity of seed lots from large-scale areas. Currently, European beech (Fagus sylvatica L.) accounts for 7.21% of the forested area of this country. Almost 24,000 ha of beech are registered as units of approval (UA) for harvesting of reproductive material. About 40% of these UA are made up of areas of 10 ha consisting of stands with different micro-sites. Beechnut dormancy and thus the chilling requirements for the rate of germination are affected by provenance and weather conditions (precipitation and temperature) during seed maturation. Beechnuts collected from different harvest sites reached significantly different germination and also showed different degrees of dormancy. Results illustrated that beechnut seed lots collected from large areas (a set of different stands) can show high heterogeneity in germination and dormancy and this can significantly affect the uniformity of pre-sowing treatment and emergence in nurseries. Keywords: beechnuts, germination, rate of germination, temperature, precipitation, seed collection Journal: Journal of Forest Science Pages: 382-392 Volume: 61 Issue: 9 Year: 2015 DOI: 10.17221/44/2015-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/44/2015-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201509-0003.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:9:id:44-2015-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Nikooy Author-Workplace-Name: Department of Forestry, Natural Resources Faculty, University of Guilan, Guilan, Iran Author-Name: S. Ahrari Author-Workplace-Name: Department of Forestry, Natural Resources Faculty, University of Guilan, Guilan, Iran Author-Name: A. Salehi Author-Workplace-Name: Department of Forestry, Natural Resources Faculty, University of Guilan, Guilan, Iran Author-Name: R. Naghdi Author-Workplace-Name: Department of Forestry, Natural Resources Faculty, University of Guilan, Guilan, Iran Title: Effects of rubber-tired skidder and farm tractor on physical properties of soil in plantation areas in the north of Iran Abstract: Physical properties of soil can be affected by machines that are used for skidding which have the potential to impact soil sustainability and forest productivity. The present study evaluated the effect of timber skidding by a rubber-tired skidder and farm tractor on the soil physical properties. The study site was located in Hafdaghanan plantation region in the north of Iran. Two treatments that consisted of skidding by HSM 904 skidder and ITM285 farm tractor equipped with trailer were applied. The trails were included in three traffic levels: primary, secondary and tertiary. Treatment effects were tested using analysis of variance (ANOVA) with skidding machine types and traffic levels. Results indicated that machine type and traffic intensity are the effective factors on soil physical properties. The results showed that with an increase of traffic frequency, bulk density increased but total porosity and soil water content decreased. The results of the study provide clear evidence that farm tractor is a more environmentally friendly machine than rubber-tired skidder in the plantation area. Keywords: aspen, skid trail, skidding machine, soil disturbance, timber skidding Journal: Journal of Forest Science Pages: 393-398 Volume: 61 Issue: 9 Year: 2015 DOI: 10.17221/125/2014-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/125/2014-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201509-0004.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:9:id:125-2014-JFS Template-Type: ReDIF-Article 1.0 Author-Name: M. Tužinský Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: I. Kupka Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: V. Podrázský Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Author-Name: H. Prknová Author-Workplace-Name: Faculty of Forestry and Wood Sciences, Czech University of Life Sciences Prague, Prague, Czech Republic Title: Influence of the mineral rock alginite on survival rate and re-growth of selected tree species on agricultural land Abstract: The objective of this work is to evaluate the effect of alginite on the growth parameters of seedlings of Douglas-fir, Scots pine and line mixture of pedunculate oak, red oak and Norway maple (broadleaves) on former agricultural land with an unfavourable hydrophysical regime. The research plot consists of 36 sub-plots, each sub-plot has a size of 400 m2. The following doses of alginite were applied: control (variant A without alginite), 0.5 kg of alginite (B) and 1.5 kg of alginite (C) when planting both conifers and mixtures of broadleaves. Number of seedlings on the sub-plots was 400 individuals, only in the case of Douglas-fir the number was 200 individuals. Therefore every combination of tree species and the amount of alginite had 4 replications. The parameters of growth and development of individual trees (height, increment and mortality) show that after 2 years, both doses of alginite had statistically positive effects on height increments. Keywords: afforestation, soil improvement, stimulator, plantation growth Journal: Journal of Forest Science Pages: 399-405 Volume: 61 Issue: 9 Year: 2015 DOI: 10.17221/11/2015-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/11/2015-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201509-0005.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:9:id:11-2015-JFS Template-Type: ReDIF-Article 1.0 Author-Name: Ch. Kuehne Author-Workplace-Name: School of Environment and Natural Resources, Freiburg University, Freiburg, Germany Author-Name: Ch. Karrié Author-Workplace-Name: School of Environment and Natural Resources, Freiburg University, Freiburg, Germany Author-Name: D.I. Forrester Author-Workplace-Name: School of Environment and Natural Resources, Freiburg University, Freiburg, Germany Author-Name: U. Kohnle Author-Workplace-Name: Forest Research Institute Baden-Württemberg, Freiburg, Germany Author-Name: J. Bauhus Author-Workplace-Name: School of Environment and Natural Resources, Freiburg University, Freiburg, Germany Title: Root system development in naturally regenerated Douglas-fir saplings as influenced by canopy closure and crowding Abstract: Documented information on the growth dynamics and related silvicultural manipulation of naturally regenerat­ed Douglas-fir beneath a canopy shelter is scarce. We hypothesized that long regeneration phases creating dense cohorts of Douglas-fir advanced regeneration beneath a closed canopy of mature trees have a negative impact on the formation of a stable root system. We therefore studied the influence of shading and competition on root system characteristics of 28 naturally regenerated, ca 3 m tall Douglas-fir saplings growing either without immediate competitors or in dense neighbourhoods, and these situations were located either beneath a closed canopy or in large canopy openings. Both canopy shelter and neighbourhood crowding limited sapling growth and root system development. Saplings from groups located beneath the canopy, although significantly older than the saplings growing in the open, exhibited lower root-to-shoot ratios. When growing in the open, maximum width, total length, and total biomass of root systems was much lower for saplings with than without competitors. In contrast, reductions in root development owing to competition within the sapling cohort were less pronounced under closed canopy conditions. Our results suggest that irrespective of the level of canopy closure, high sapling densities in naturally regenerated young Douglas-fir stands should be reduced early to improve root system development and hence physical stability. Keywords: natural regeneration, competition, shading, physical tree stability, carbon allocation, root-to-shoot ratio Journal: Journal of Forest Science Pages: 406-415 Volume: 61 Issue: 9 Year: 2015 DOI: 10.17221/53/2015-JFS File-URL: http://jfs.agriculturejournals.cz/doi/10.17221/53/2015-JFS.html File-Format: text/html X-File-Ref: http://agriculturejournals.cz/RePEc/caa/references/jfs-201509-0006.txt Handle: RePEc:caa:jnljfs:v:61:y:2015:i:9:id:53-2015-JFS