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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Short-term successions of mollusc assemblages of natural and anthropogenic habitats
 Berková, Kateřina ; Juřičková, Lucie (advisor) ; Drvotová, Magda (referee)
This work compares the succession of mollusc communities of natural and anthropic habitats. It summarizes how mollusc assemblages of natural habitats change over time, if they are stable over time, and to what extent the natural succession of mollusc communities are affected by man. Mollusc communities of different habitats are subject of constant change. The mollusc succession of natural habitats was usually studied in deciduous forests. It leads to species-rich assemblages that do not change much in the short time-scale. The succession has also been studied at anthropic habitats such as quarries, urban habitats and castle ruins, where some species characteristic of particular habitat types or successive stages were identified. Key words: molluscs, succession, climax, disturbance, malacofauna
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Vegetation and geobiocoenological classification of silver fir forests of the Czech Republic – preliminary results
 Boublík, Karel
Preliminary results of vegetation classification of silver fir (Abies alba) forests are given. Seven communities from three alliances were distinguished in the Czech Republic. Climax stage of vegetation on the habitats of each association was investigated by geobiocoenological methods. It is claimed, that fir forests are seminatural that originated by stronger human impact (incl. fir forests on pseudogleys). They depend on forest grazing, litter raking, and other forest management. Fagus sylvatica is supposed to be dominant or frequent tree under natural conditions.
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