Journal of Forest Science, 2005 (vol. 51), issue 11
Contribution to the knowledge of development and harmfulness of imported willow leaf beetle (Plagiodera versicolora) (Coleoptera, Chrysomelidae)
J. Urban
J. For. Sci., 2005, 51(11):481-507 | DOI: 10.17221/4582-JFS 
The paper deals with the occurrence, development and harmfulness of imported willow leaf beetle (Plagiodera versicolora Laich.) in riparian and accompanying stands of the Svratka and Svitava rivers in the region of Brno. Salix fragilis L. and S. × rubens Schr. are the most damaged species there. Imagoes leave wintering places usually at the beginning of May. During about a 60-day period, they damage ca. 23.3 cm2 leaves of S. fragilis and lay 250 to 730 (on average 539) eggs. The whole egg-laying consists of 16 to 48 (on average 35.5) groups with 6 to 26 (on average 15.2) eggs. The fecundity...
Forest site classification of forest ecosystems in Bohemian Karst (Czech Republic)
P. Šamonil, J. Viewegh
J. For. Sci., 2005, 51(11):508-518 | DOI: 10.17221/4583-JFS
The study focuses on selected forest site units on water uninfluenced sites on limestone in Bohemian Karst. The species composition of phytocoenoses, their potential production and soil properties were assessed. Studied forest site complexes are correctly determined and they provide important information from the aspect of planning and practical nature conservation management. It is necessary to specify the criteria of categoria calcaria in detail, since it is often difficult to distinguish it from categoria mesotrophica. Water retention capacity of soils, a criterion often neglected so far, presents a useful view of forest site water...
Conversion of substitute tree species stands and pure spruce stands in theOreMountains inSaxony- A Report
S. Hering, S. Irrgang
J. For. Sci., 2005, 51(11):519-525 | DOI: 10.17221/4584-JFS
The original natural forest ecosystems of the OreMountains(Norway spruce, silver fir, and beech forests) have been destroyed by overcropping since the 11th century. In the 19th century spruce afforestations on large areas were intended to meet the steadily increasing demand for timber. They led to the introduction of planned forestry by building up spruce age-class forests. Efforts of a few forest specialists to establish an ecologically adapted silviculture failed before long due to economic necessities. The paper presents the results of a complex experimental plot system aiming at the forest conversion in theOreMountains. Answers...