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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 theoretical part of the thesis contains a literature review of the current knowledge on the occurrence and importance of aquatic invertebrates in salmonid fish farms. The practical part includes monitoring and determination of abundance, diversity and taxonomic composition of aquatic invertebrates in a recirculating system in Pravíkov. Sampling was conducted once a month during the vegetative season over three years, from 2015 to 2017. Samples were taken using an adjusted benthic net, from three sam-pling sites: bottom of the outflow canal from the breeding tanks, bottom of the inflow canal to the breeding tanks and the system’s wall. In addition to the abundance and diversity of aquatic invertebrates, the physico-chemical parameters of water were also measured. During the monitoring period, common breeding interventions were conduct-ed, including the discharge and disinfection of the entire system. During the monitoring period, a total of 36,066 individuals from 133 taxa of aquatic invertebrates were recorded. In 2016, despite the disinfection of the system, the highest number of taxa (74) and abundance (17,700) were registered. In 2016 and 2017, the vast majority of the macrozoobenthos collected were Chironomidae and Oligochaeta, which showed a significant growth in abundance in comparison with 2015. In 2015, 69 taxa with an abundance of 15,436 individuals were recorded. The cleaning of the system showed the highest effect on macrozoobenthos in 2017, when the bryophyte vegetation regrowth did not occur on the wall and some of the samples were without macrozoobenthos. Altogether, only 2,930 aquatic invertebrates and 67 taxa were detected. Values of the Shannon–Weaver index (H´) ranged from 1.335 to 2.214 in 2015, from 0.853 to 2.583 in 2016 and from 1.116 to 2.508 in 2017. Off all macrozoobenthos taxa recorded, Asellus aquaticus presents a potential danger to farmed fish, as it can be an intermediate host of Acanthocephala. This is also true for some species of molluscs, which can be intermediate hosts of trematodes.

JUHASOVÁ, P., Invertebrate Lectures And Their Use In Leisure Lessons. Master thesis. Praha: Charles univerzsity in Prague, Faculty of Education, 2016. 94 s. In this diploma thesis, practical tasks focused on invertebrate biology are presented. They are targeted for science hobby groups. Detailed instructions for experiments and observations as well as for capturing invertebrates can be found in this diploma thesis. There are described also long-term projects in the form of inquiry-based teaching tasks, construction of man-made outdoor insect nests (so-called "insect hostels") and also the indoor invertebrate keepings. The vast majority of tasks were tested in practice in two science hobby groups, attended by a total of 30 participants. The aim of these tasks is to increase the attractiveness and accessibility of natural science to a wider audience and improving its presentation, but also to arouse positive attitude to nature and all living creatures. Inspiration will be found there not only by leaders of natural science clubs, but also by teachers, who want to incorporate practical work with animals into teaching. Key words: invertebrates, experiment, observation, breeding, inquiry-based edusdion, IBE

The aim of this thesis is to determine the level of manganese content and its seasonal dynamics in selected herbs and trees species and invertebrates in the period 2011--2013. Trial sites were located in the highly manganese contaminated ecosystem in Krušné hory mountains. The flora and fauna samples were being collected on a monthly basis. The level of manganese was determined by the AAS method. The highest level of manganese was found in the blackberry bush (Rubus caesius L.) and the raspberry bush (Rubus idaeus L.). The larch (Larix decidua Mill.) and the mountain ash (Sorbus aucuparia L.) were the most contaminated tree species. Majority of plants accumulates manganese during the vegetative period. The invertebrates showed lower level of manganese content than plants. The highest level was found in millipedes (Diplopoda) and isopods (Oniscoidea). Despite the really high concentration of manganese in the enviroment, none of the plants and invertebrates showed symptoms of toxicosis.

This thesis deals with current issues in the field of nature conservation, t. i. landscape fragmentation due to transport infrastructure in selected model areas in the Czech Republic. The project also evaluates the issue of landscape structure and its development with a focus on individual landscape elements and their characteristics. The thesis focuses on the impact of landscape fragmentation on dimensionally small organisms. Model locations are cadastral areas of two popular tourist destinations in the South Bohemian Region at Lipensko site. The target organisms were invertebrates, common representatives of families Carabidae and Formicidae. Occurence of those species is typical for these areas. Landscape structure of the two areas and its changes during a period of sixty years has been defined by analyzing the document. Existence of suitable habitat for various kinds of target species was calculated through Meff index. Obtained values represent a numerical expression of the existence of suitable areas for the studied organisms in both locations. Interviews conducted in model areas also pointed out to a very low public awareness of the issue of landscape fragmentation.

Hůšová J.: The Project of school science excursions around Sedlcany {\clq}qMaster Thesis``, 2009 The aim of this thesis is to show the design of science field trips which could compliment and strengthen the natural science curriculum of primary schools. The introduction deals with two issues. Firstly, the theoretical basis of science trips and the steps which should be followed is discussed. Secondly, the general natural science characteristics of the Sedlčany area are given. Four trips are described, each with its own theme : the invertibrates in the Sedlčany area, Siberny Vrch Forest, the Hus{\crq}s Pulpit natural reservation area, and the Albert Rocks natural reservation area. Each excursion comes with a teaching plan for teachers, a map and a route plan, filled-in worksheets for the teacher, and blank work sheets for students. The excursions which were executed have been evaluated. The final section contains a list of sources used, and also contains additional materials, some from existing sources, and some original ones created by me for the project, such as maps, pictures, and work sheets.