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National Repository of Grey Literature 2 records found  Search took 0.01 seconds. 
Study of selected factors influencing the nesting population of reed warbler (Acrocephalus scirpaceus)
 KITTLOVÁ, Lucie
The aim of this work was to study the occurrence, abundance and distribution of breeding population of model species Reed Warbler (Acrocephalus scirpaceus) at selected locations. Subsequent evaluation is based on the monitored nesting parameters: nest height above water surface, water depth, distance of the nest from unvegetated water surface, the distance of the nest from the nearest fixed point, and number of stalks on which the nest was built. Diet spectrum was also detected. The results were statistically analysed in order to find out if and how these factors could influence nesting success and density of Reed Warbler population. Marginal influence on nesting success was found out only in these parameters: the number of stalks (the nests with three stalks was the most successful) and the distance from the fixed point. Successful nests were about 26% further (1.8 m) than the unsuccessful nests that could be explained by the predator factor. The most numerous insect orders in selected locations were Diptera (60%), Hymenoptera (21%) and Araneae (12%).
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The problems od successful wintering of hedgehogs
 KITTLOVÁ, Lucie
Hedgehog is a member of Insectivora (Eulipotyphla). There are European Hedgehog (Erinaceus europaeus) and Southern White-breasted Hedgehog (Erinaceus concolor) in our country. They have similar natural history. Both feed primarily invertebrates and live solitary. It is typical for these two species to hibernate during cold part of the year. The aim of this study was to determine how to reduce the mortality of the hedgehogs in the Zoological Garden Ústí nad Labem and suggest better breeding conditions. Basis of the work forms registering incoming hedgehogs and checking their health since November 2009 to March 2010. Furthermore an individual measuring has been taken every week to decide whether hedgehog has sufficient weight for hibernation. Comparison of breeding conditions in Hluboká nad Vltavou, Třeboň and Vlašim rescue stations was also done during this study. This comparison showed that the biggest shortcoming of the Zoological Garden Ústí nad Labem is small knowledge of keepers about keeping of hedgehogs. Another failure is little time given to them. Definitely, the biggest problem is a lack of place, thereby they are kept together in large numbers. Thats probably the main reason why there is a lot of aggressive behavior and disease transmission between individuals.
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