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Nález zvonovce liliolistého (Adenophora liliifolia) u Žehuně ve středním Polabí po 75 letech

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Title in English Finding of the Ladybells Adenophora liliifolia near the village of Žehuň (Elbe River Basin, Czech Republic) after 75 years


Year of publication 2020
Type Article in Periodical
Magazine / Source Bohemia centralis
MU Faculty or unit

Faculty of Science

Keywords endangered species; habitat requirements; plant distribution; relict; subcontinental oak forest
Description The rare Ladybells Adenophora liliifolia was found after 75 years near the village of Žehuň in the Elbe River Basin, the Czech Republic. It is listed among critically endangered species in the Czech Red List and among plant species of Community interest in Annex II to the European Union’s Habitats Directive. The authors discovered a small population in the Žehuňsko- Báň Nature Monument, approx. five kilometres from the nearest historical occurrence sites. In 2018, the population consisted of four fertile stems probably belonging to just two individuals. Active management measures are needed for its preservation as it is threatened by deer browsing, wild boar rooting, and shrub expansion. Habitat conditions seem to be convenient for the species: it grows in a slightly thermophilous open canopy forest co-dominated by Fraxinus excelsior, Betula pendula, Pinus sylvestris and Quercus robur. Using expert system for the Czech vegetation classification, the authors assigned the recorded vegetation plot to subcontinental oak forests of Melico pictae-Quercetum roboris association. The vegetation type shows similarities to forests in the continental part of species’ distribution range, where the Ladybells is widespread. It is suggested that, as in the case of some other rare species in the study area, the Ladybells is a relict of the flora of Early Holocene open canopy forests and steppe meadows which has survived there due to the hypothesized continuity of open habitats. Possible causes of this continuity require further study.
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