DasCladonio rangiferinae-Pinetum sylvestris des Landschaftsschutzgebietes Křivoklátsko (Mittelböhmen) und seine Stellung im phytozönologischen System
The pine forest with an undergrowth of fruticose lichens—Cladonio rangiferinae-Pinetum sylvestris (Kobenza 1930) em.Passarge 1956 from the protected landscape area KřizoklätsCladonio-Pinetum comprises a permanent pine forest community occurring naturally on a hard base and nutrient deficient siliceous rocks in the semiconvex parts of the steep slopes of narrow side-valleys of the Berounka river. The soil type of this community is dystrophic ranker. The phytosociological composition of theCladonio-Pinetum is documented by the table of relevés, the habitat by chemical analyses of the soil.
The impact of forest management on changes in composition of terricolous lichens in dry acidophilous Scots pine forests
Abstract This study focuses on dry acidophilous Scots pine forests, well known for their high biodiversity of cryptogams. We hypothesized that dense forests and heavy management were responsible for changes in species diversity, decreasing trends in lichen cover and increasing moss cover. This hypothesis was tested in three types of Scots pine forests maintained under three different management regimes: 1) managed forests (forest plantations regenerated by planting), 2) semi-natural forests (forest plantations regenerated naturally), both located in the Borská nížina lowland in SW Slovakia, and 3) natural forests (primordial vegetation without visible management actions from the association Cladonio-Pinetum Juraszek 1928), located in the Bory Tucholskie National Park, NW Poland. We observed that the cover of the canopy tree layer had the most significant influence on the diversity of lichens. Managed forests are planted and maintained to achieve denser tree stocking, and although the environmental conditions created appear optimal for moss species, they are less suitable for terricolous lichens.
Beobachtungen und Gedanken zum Rückgang der Tanne
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