Journal of Forest Science, 2009 (vol. 55), issue 11
Plant community variability within potential natural vegetation units: a case study from the Bohemian Karst
P. Šamonil, K. Polesná, P. Unar
J. For. Sci., 2009, 55(11):485-501 | DOI: 10.17221/111/2008-JFS 
: Based on a map of potential natural vegetation (PNV), actual vegetation was studied in the Mramor locality (106.4 ha). A total of 188 relevés were examined using stratified random sampling. A comparison was made between trends in vegetation variability throughout the entire locality and variability within the defined PNV units. The stratification of the locality according to PNV units was only partly representative of the main trends in vegetation variability, especially at ecologically distinctive sites. On the other hand, in areas with a relatively limited ecological gradient, the sites were "oversampled". The variability of plant communities within...
Quantity and distribution of fine root biomass in the intermediate stage of beech virgin forest Badínsky prales
P. Jaloviar, L. Bakošová, S. Kucbel, J. Vencurik
J. For. Sci., 2009, 55(11):502-510 | DOI: 10.17221/31/2009-JFS
The fine root biomass represents 3,372 kg/ha in the intermediate stage of the beech virgin forest with different admixture of goat willow, where the vast majority of this biomass is located in the uppermost mineral soil layer 0-10 cm. The variability of the fine root biomass calculated from 35 sample points represents approximately 90% of the mean value and reaches the highest value within the humus layer. The total fine root length investigated in 10 cm thick soil layers decreases with increasing soil depth. A significant linear relationship between the fine root length (calculated per 1 cm thick soil layer and 1 m2 of stand area) and the...
Comparison of morphological and physiological parameters of the planting material of Norway spruce (Picea abies [L.] Karst.) from intensive nursery technologies with current bareroot plants
J. Leugner, A. Jurásek, J. Martincová
J. For. Sci., 2009, 55(11):511-517 | DOI: 10.17221/21/2009-JFS
High quality of planting material is an essential prerequisite for successful artificial forest regeneration. We carried out a detailed investigation aimed at differences between plantable bareroot and container plants of Norway spruce (Picea abies [L.] Karst.). Based on the results of this experiment, there exist marked differences in basic morphological traits between bareroot plants and plugs. The largest differences were observed in root collar diameter and root system volume. Differences in physiological quality (nutrient content, function of assimilatory organs) were also great. The results document that container seedlings of Norway spruce...
Geostatistical simulation of bark beetle infestation for forest protection purposes
T. Hlásny, L. Vizi, M. Turčáni, M. Koreň, L. Kulla, Z. Sitková
J. For. Sci., 2009, 55(11):518-525 | DOI: 10.17221/34/2009-JFS
Geostatistical analysis of bark beetle activity and its use for the improvement of pest control measures are presented. Data on the volume of salvage timber felling due to bark beetle infestation for the period 2002-2004 were used for the analysis. Research was carried out in the northwestern part of Slovakia. The techniques used were variogram modelling, Turning Bands Simulation and selected techniques of simulation post-processing. The maps indicating the probability that a critical volume of timber felling was exceeded in a particular location were produced. The proposed system may be used effectively for the improvement of pest control measures...
The use of cotyledon proteins to assess the genetic diversity in sweet holm oak
M. A. Martín, R. Navarro-Cerrillo, P. Ortega, J. B. Alvarez
J. For. Sci., 2009, 55(11):526-531 | DOI: 10.17221/106/2008-JFS
Sweet holm oak (Quercus ilex ssp. ballota Desf. Samp.) is an important broad-leaved tree spread in the Mediterranean basin. In Spain, few studies on the genetic variability of this species have been displayed. Storage seed proteins are a useful tool in the evaluation of the genetic variability of many species. The objective of this study was to analyze the usefulness of cotyledon proteins as markers of the genetic diversity in sweet holm oak. The evaluated populations were highly polymorphic for the glutelins, being detected up to 32 polymorphic bands with a wide distribution among all them. Considering all evaluated populations,...