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National Repository of Grey Literature 1 records found  Search took 0.00 seconds. 
Population and spatial dynamics of Winter Damselflies (Odonata: Lestidae)
 Jablonická, Zuzana ; Harabiš, Filip (advisor) ; Kadlec, Tomáš (referee)
The main subject of this study was Sympecma fusca, damselfly species representing life history with many specific adaptations. One of the unique adaptation is overwintering in adult life stage outside the water habitat. The aim of this thesis is to analyze distribution of this species in terrestrial environment, as well as changes in abundance during the season. Sympecma fusca is common winter damselfly in Czech Republic, occurring on variety of still freshwater habitats with rich vegetation. During overwintering this species actively searching for micro-habitats situated in terrestrial environment, providing shelter and reducing the mortality risks. Capture-Mark-Recapture Method was applied to describe the population dynamics of this species. The experimental part was divided into two periods: pre-reproductive (autumn) and reproductive (spring). Subsequent analysis provide estimation of total number of individuals in population during season. The results showed significant habitat preference of ecotones between forest and meadow over forest and open habitats. However, this preference was confirmed only during pre-reproductive period, the time when imagoes were looking for suitable shelter for the overwintering. These findings can be used to in understand the habitat preference of this species, but also general factors that can affect its abundance.
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