Journal of Forest Science, 2004 (vol. 50), issue 7
Beech (Fagus sylvatica L.) forests of a selection structure in the Bieszczady Mountains (southeastern Poland)
A. Jaworski, Z. Kołodziej
J. For. Sci., 2004, 50(7):301-312 | DOI: 10.17221/4627-JFS 
The characteristics of two beech (Fagus sylvatica L.) stands are presented in this paper. One, the Tarnicki stand, situated in the Bieszczadzki National Park, represents the growing up stage and selection phase of a forest of primeval character. The other one, the Otryt stand, is situated in managed forests of the Lutowiska Forest District. In each stand two sample plots were established. The distribution of the number of trees in each sample plot agreed with de Liocourt sequence and Meyer curve. Both stands were characterized by the structure of many generations. The Otryt stand, with respective volumes of 238 and 324 m3/hain two...
Larch crown diseases in Trentino and South Tyrol
G. Maresi, P. Capretti, P. Ambrosi, S. Minerbi
J. For. Sci., 2004, 50(7):313-318 | DOI: 10.17221/4628-JFS
Various attacks of pathogenic fungi on the larch crown were observed in Trentino/South Tyrol, Italy, over the past few years. In 1999, severe defoliation was caused by Mycosphaerella laricina, a rarely investigated pathogen, whose action was enhanced by high temperatures and humidity in August. In July 2000, larch woods showed crown yellowing due to Meria laricis. Lower temperatures and heavy precipitation were probably the predisposing factors in this case. Hypodermella laricis was observed in 2002 as a localised attack, while Lachnellula wilkommii is commonly recorded. The impact of these diseases and the environmental...
Dothistroma needle blight Mycosphaerella pini E. Rostrup, a new quarantine pathogen of pines in the CR
L. Jankovský, M. Bednářová, D. Palovčíková
J. For. Sci., 2004, 50(7):319-326 | DOI: 10.17221/4629-JFS
Dothistroma needle blight caused by Mycosphaerella pini E. Rostrup was observed for the first time in the Czech Republic on an imported Pinus nigra Arnold in 1999. In 2000, it was also found in the open planting. During three years, it became an important pathogen of pines in the Czech Republic. Its occurrence was noticed in more than 50 localities, above all in the region of Moravia and Silesia and eastern Bohemia. In total, it was found on 10 species of pine (P. nigra Arnold, P. banksiana Lamb., P. contorta Loudon, P. mugo Turra, P. leucodermis Ant., P. sylvestris L., P....
Changes in trends of the height growth of spruce and pine derived from continuous measurements in forest management plans of Kostelec nad Černými lesy and on pilot research plots in the Czech Republic
J. Sequens, M. Křepela, D. Zahradník
J. For. Sci., 2004, 50(7):327-337 | DOI: 10.17221/4630-JFS
In changing growth conditions, methodical procedures should concentrate on the investigation of processes currently under way in forests. Many studies have shown that present models of forest growth parameters differ from previous surveys as far as for instance the height is concerned. Causes of these phenomena have not been satisfactorily explained although various hypotheses are investigated. In our study, we present partial results of the investigation of height growth within a sixty-five-year period, based on the analysis of data obtained from seven forest management plans in the management-plan area of Kostelec nad Černými lesy (Kostelec n. Č....
Early stadiums of floodplain forest succession in a wide river beds upon an example of Bečva
J. Klečka
J. For. Sci., 2004, 50(7):338-352 | DOI: 10.17221/4631-JFS
In the years 1999-2001 early stadiums of succession development of a floodplain forest were monitored in the wide bed of the Bečva River formed during the floods in 1997. Changing site conditions were investigated and the vegetation of pebble beds was repeatedly mapped in detail. In dependence on the site conditions main types of biotopes were described. The vegetation data were evaluated in accordance with the life form and ecological claims of the identified species. The results indicated an increasing differentiation of the originally relatively homogeneous environment owing to fluvial processes and progress of vegetation. Generally hemicryptophytes...