Journal of Forest Science, 2010 (vol. 56), issue 9
Nutrition of silver fir (Abies alba Mill) growing at the upper limit of its occurrence in the ©umava National Park and Protected Landscape Area
R. Novotný, D. Černý, V. ©rámek
J. For. Sci., 2010, 56(9):381-388 | DOI: 10.17221/87/2009-JFS 
In the second half of 20th century silver fir regeneration has been observed throughout all of the Europe, including the Czech Republic. The Bohemian Forest - ©umava Mts. is one of the regions where the silver fir percentage in forest stands is supposed to be increased from the present 2% to nearly 12%. During the period 2006-2007, in the Czech part of the Bohemian Forest, samples of silver fir were taken mainly in the upper altitudinal limit of silver fir occurrence. In the present paper the results of performed analyses are compared with similar surveys conducted in the other European regions. Samples from the Bohemian Forest, in contrast...
Effect of gibberellic acid and ethephon on the germination of European beech dormant and chilled beechnuts
P. Kolářová, L. Bezděčková, Z. Procházková
J. For. Sci., 2010, 56(9):389-396 | DOI: 10.17221/32/2010-JFS
The effect of ethephon (80, 100 and 120 mg.l-1) and gibberellic acid (GA3) (40, 300 and 1,000 mg.l-1) on the germination capacity (GC) and mean germination time (MGT) of European beech (Fagus sylvatica [L.]) dormant beechnuts or beechnuts pre-chilled for four weeks was determined. Compared to the control (dormant untreated seeds) or beechnuts treated with tap water no significant increase in mean GC was detected after the application of ethephon or GA3 to dormant seeds. Conversely, both ethephon and GA3 treatments reduced (ethephon significantly) GC when applied to beechnuts chilled for...
Coarse woody debris carbon stocks in natural spruce forests of Babia hora
K. Merganičová, J. Merganič
J. For. Sci., 2010, 56(9):397-405 | DOI: 10.17221/11/2010-JFS
Although coarse woody debris (CWD) represents one of the major carbon pools in natural forest ecosystems, little information is available about its CWD carbon stocks. This study demonstrates the importance of proper estimation of carbon stocks in CWD, which accounts for the decay process of CWD, on an example of a natural mountainous spruce forest located in Central Europe. The study accounts for aboveground coarse woody debris including standing dead trees, lying deadwood, and naturally formed stumps. Basic mensurational information (diameter, height, decay class) about dead wood was collected in the field during the inventory of the forests of the...
Growth and characteristics of old beech (Fagus sylvatica L.) trees individually dispersed in spruce monocultures--
L. Dobrovolný, V. Tesař
J. For. Sci., 2010, 56(9):406-416 | DOI: 10.17221/19/2010-JFS
We studied old beech trees individually dispersed in spruce monocultures after having found wildlings in their vicinity. The goal was to define stem and crown dimensions of the trees in dependence on their position in the primary spruce stand and to find out what kind of development they went through before reaching the current condition. We made an inventory of 883 trees in about 800 ha of stands growing in the fir-beech forest altitudinal zone (FAZ). A detailed biometric analysis conducted on two research plots of a total area 19 ha included 110 trees. Their age is 140-180 years as indicated by the analysis of annual rings. Thus, they grow in the...
Changes in the abundance of Melolontha hippocastani Fabr. and Melolontha melolontha (L.) (Coleoptera: Scarabeidae) in the Czech Republic in the period 2003-2009
M. ©vestka
J. For. Sci., 2010, 56(9):417-428 | DOI: 10.17221/109/2009-JFS
In the period between 2003 and 2009 we evaluated the abundance of adults of Melolontha hippocastani Fabr. and Melolontha melolontha (L.) cockchafers in four forest regions of the Czech Republic. During this period each of the evaluated localities was hit twice by heavy swarming. The course of swarming, species composition, abundance of the respective tribe, sex ratio during swarming and the correlation between the course of swarming and average daily temperature were monitored by means of a light trap, an automatic meteorological station and observations in the open space; the data were represented in the form of graphs. We evaluated...