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Vliv intenzity hospodaření při obnově dubových porostů v oblasti soutoku Dyje a Moravy na diverzitu pavouků (Araneae)
Rychlá Hulejová, Petra
In this thesis, the intensity of management (presence of mechanical soil preparation) of the post-harvest stand and its effect on spider communities was investigated. There were chosen ten locations for the research, which were divided into 5 intensively managed and 5 extensively managed plots. A ground trapping transect was placed in each plot. Sampling were made on the following dates: 18 May 2021, 17 June 2021, 19 July 2021, 19 August 2021, 01 October 2021. A total of 7001 individuals belonging to 16 families and 85 species were captured, of which 12 species were on the Red List of Protected Species in the Czech Republic. Pardosa lugubris was the most abundant species and Trochosa spinipalpis from the Red List species. The most abundant family found during the survey was the representative of the family Linyphiidae. Primarily individuals with a ground hunting strategy were captured in the ground trapping survey. However, a number of net species were also present. The number of species was significantly higher in areas extensively managed without mechanical soil preparation. The conservation value and abundance of rare and endangered species was also significantly higher in plots under extensive management. It was also found that the effect of management did not affect the overall abundance of spiders. Significant factors influencing spider species composition included vegetation cover and the presence of small wood residues covering the soil surface. According to the results, it can be concluded that extensive management has a positive effect on spiders. Therefore, we recommend this type of management as a positive method that could be further used in the restoration of oak forests in the Soutok Forest Reserve, or in other areas with valuable floodplain forests.
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