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The experiment took place in the ash deposit of power plant in the north-west Bohemia, where wasps and bees were investigated. Data were collected on localities of different management and age in May to August, 2015 by pan color traps, when 106 traps were collected (70 traps on succession areas and 36 traps on reclaimed areas). In total, 603 individuals (88 species) were determined. Thirty two species stated in the Red list, 14 species are vulnerable, six species are endangered and 2 species are critical endangered. Succession areas were strictly preferred by 39 species (90 individuals) and reclaimed areas by 12 species (18 individuals).

The topic of my thesis is: {\clqq}Measure for protection of inhabitans in case of occurrence of a special flood on the selected water work of the 3rd category``. A special flood is flood caused by a defect or accident (rupture of the dam of the water work increasing the water level or accumulating water) or by emergency solution of a critical situation on the water work causing the occurrence of an extraordinary event (crisis situation) on the territory underneath the water work. For the elaboration of my thesis I selected the {\clqq}sludge bed in Hodějovice`` water work, the owner and operator of which is the Heating Plan České Budějovice a.s. (shar. Comp.). In case of occurence of a special flood, the local parts of České Budějovice, Mladé and Nové Hodějovice would be endangered. To prevent the unnecessary damage to health or even loss of life, the plan of protection for the territory underneath the water work from a special flood had to be elaborated. My task was to evaluate the sufficiency of this documentation and to supplement passibly the necessary data by the local examination and anylysis of the documents and the suggest additional protective measures.

No description available.

No description available.

Abandoned industrial-waste deposits (incl. fly ash or tailings ponds) represent very specific and mostly extreme habitat conditions. They offer unique opportunity to study primary succession in cultural landscape. Substrate of the material deposited here shows extreme properties, such as low pH, overheating of the open surface, salinization etc. The aim of this work is to map the colonization of different successional stages of vegetation by ants after years of abandonment of ore-waste deposits in Chvaletice (Eastern Bohemia, CR) and to compare the present state with analogous study made in 2001. Particular aims of both studies (Jarešová 2001, and present study, 2011-12) is to test the influence of ants on vegetation succession. During the years 2011-2012 several prospections were made to record species diversity of ants. On the surface plateau of the sedimentation basin two types of habitats were chosen - the areas with present ant nests and the other areas without them. Each of both types of habitats exhibits different plant species richness: separately the species-area curves were constructed and explained. Three dominant ant species of different size categories present on sedimentation basin were selected for experimental offering of plant seeds, Formica pratensis, Lasius niger, Tetramorium...

Natural habitats of aculeate hymenopterans are rapidly decreasing and strictly specialized species are thus going to be endangered or extinct. However, in the last decades the conservation potential of postindustrial sites has been found. There were many endangered and nationally extinct species recorded along with the drift sand specialists. However, one unclear thing remains - on postindustrial sites there were still no recordings of species that have similar biological traits to the species that are colonizing these sites. The main target of my thesis was to find traits which make it possible for the insects to colonize postindustrial sites. A matrix of 79 traits was made to describe aculeate hymenopterans biotope preferences, phenology, morphology, biogeographical area, nest, food and life history strategies. With these traits I describe 351 species systematically collected on twenty-one localities with finely - grained substrate found in Polabi and South Bohemia. These traits were tested with weighted mean abundances on type of substrate (artificial vs. sandy) with GEE analysis and the type of locality (dumping ground of coal combustion, ore and sand sludge vs. sandpits vs. natural sand) with PCoA analysis. A phylogenetic correction was incorporated in both analyzes. My results show that on...

A human enters with his activities to the industrial landscape in the same natural way as the nature entered before, and developed them.