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Distribution and ecological requirements of Sorbus torminalis (L.) Crantz in the Czech Republic

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Madera P., Ticha S., Repka R.
Dendrobiology
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2013
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tom 69
This study addresses the distribution of the wild service tree Sorbus torminalis (L.) Crantz in the Czech Republic by drawing on publicly available databases and herbarium records. In the Czech Republic, this tree occurs in stands at a proportion greater than 1% in 4350.32 ha of forests; the reduced area of the species is 86.42 ha. However, mapping the biotopes for Natura 2000 showed 3627 segments of biotopes, with the wild service tree occurring in a total area of 31274.4 ha. There are approximately 220179 wild service tree individuals in the Czech Republic. This tree is found at altitudes from 175 to 760 m a.s.l., with the centre between 250 and 450 m a.s.l. It shows no preference for slope orientation and is mostly located at sites with rich, and frequently humus-enriched, soils; however, it is often found at extreme sites with shallow soils in the 1st –5th forest altitudinal zones. In the Czech Republic, the wild service tree clearly prefers plant communities of cl. Querco-Fagetea; however, its occurrence was recorded in 10 other classes (20 alliances) of the phytocoenological system. In the conditions of the Czech Republic, natural regeneration of the wild service tree occurs in approximately 55% of the stands in which it is present.
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The population structure and regeneration of Sorbus torminalis in Hadecka planinka National Nature Reserve (Czech Republic)

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Madera P., Kohoutek M., Senfeldr M., Repka R.
Dendrobiology
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2012
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tom 68
We performed a detailed overall field survey of all specimens of the wild service tree Sorbus torminalis (L.) Crantz in the research area in the Hádecká planinka National Nature Reserve. This research area, with an area of 80 ha, contains one of the largest populations of the tree in Europe. In all, 1713 specimens were found. This study provides a detailed description of the wild service tree population in the area. The basic biometric parameters (height, GBH, social position, fertility) of thepopulation were assessed. The main emphasis of our analysis was to evaluate the population's age structure. We used estimates of age structure based on the Chapman-Richards growth function to perform this evaluation. During the past twenty years, the natural regeneration of the wild service tree in the nature reserve has decreased considerably. At an experimental plot where a high forest was converted to a coppice with standards, regeneration occurred over 75% of the area. Root suckers were found at the beginning of the observation period. After 2–3 years, generative regeneration occurred.
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