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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Reptile assemblages along succession gradient in oak forests of Podyji National Park
 BALOUN, Jaroslav
This thesis focuses on the effects of succession on forest clearings on reptile assemblages in Podyjí National Park. The topic and results presented here follow up my bachelor thesis evaluating habitat preference of reptiles in Podyjí National Park and their assemblages on experimental clearings in the core zone of NP Podyjí. The reptile monitoring was conducted on the clearings and nearby control habitats using a method of artifical shelters and method of transect walks. Abundance of reptile species on clearings, and effect of gradual succession on the clearings on individual reptile species was studied and evaluated. While the creation of clearings clearly benefited most termophilous reptile species, including e.g. the Green lizard (Lacerta viridis) and the Aesculapian snake (Zamenis longissimus), the effect of succession is more difficult to assess owing to rather high variation among years. Only the L. viridis significantly derceased with the course of succession, while the Slow worm (Anguis fragilis) benefited from it.
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Effect of disturbances on reptile and amphibian assemblages in oak forests of Podyji National Park
 BALOUN, Jaroslav
The thesis focuses on the monitoring of reptiles and amphibians of different habitats in six sampling areas in the Podyjí National Park. The monitoring was conducted by the method visually searching for reptiles along walking transect and by using black pond foils as artificial hiding places from 2012 to 2015. The thesis evaluates habitat preferences of reptile species common in the area. The most preferred were partially open habitats, such as the forest edge and open sparse oak forest. The least preferred habitat was shady, closed-canopy forest. The results demonstrate the positive effect of distrubances on most reptile species in the oak forests of Podyjí NP. Habitats suitable for numerous endangered species, including many reptiles, decline due to gradual overgrowing of sparse oak forests and woodlands. The results of this thesis highlight the importance of active conservation forest management to protect the presence of open woodlands and sparse forests.
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3 Baloun, Jiří
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