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Influence of military disturbances on succession of arthropod communities in Brdy
Palivcová, Lucie ; Tropek, Robert (advisor) ; Knapp, Michal (referee)
The thesis aims for relationship between military-caused disturbance intensity and species richness, conservation value and composition of arthropods communities in the Brdy Mts. In the Brdy abandoned military area (MTA), a highly heterogeneous habitat mosaic developed by the long-term influence of military disturbances on two shooting areas of Jordán and Tok. The habitats range from strongly disturbed sites with sparse vegetation, through heterogeneous growths of Erica and Vaccinium in moderately disturbed sites, to sparse woodlands in the least disturbed sites. Based on the shooting areas history reconstruction, 24 study plots of 4 categories of different disturbance intensity were selected in both shooting areas together. Standardized sampling of seven groups of arthropods was performed in summer 2017 by pitfall traps, yellow pan traps, and light traps. More intensive disturbances positively influenced species richness of Aculeates and conservation value of spiders and beetles, but negatively affected species richness of moths. Simultaneously, the intensity of disturbances affected community composition of spiders, moths, beetles, Aculeates and Orthopteroids. Endangered species mostly affiliated to the more intensively disturbed plots. This results should be helpful in understanding of influence...
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Effectivity and utilisation of different methods of moths research
Palivcová, Lucie ; Tropek, Robert (advisor) ; Vrba, Pavel (referee)
Sampling of data on moth communities is essential for our better understanding of their biology. This thesis is focused on different moth sampling methods, with a special aim to light catching as the most effective way how to attract them. Various sampling methods are described together with review of published knowledge of their effectivity, as well as advantages and disadvantages. Individual sampling is suitable for studying of preselected particular species. Interception traps are used for studying of flying corridors. Selected groups of moth can be attracted by various baits or caught by colored pan traps, bait traps and pheromone traps. Common and highly useful is attracting of moths using light. Light source can significantly affect sampling efficiency. The most species and individuals are attracted by shortwave light, but particular preferences are species and sexes specific. Understanding of methodology and moth behavior can improve study of them and should bring new knowledge of their conservation or management of moth pests.
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