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Effect of D8 motorway salting in the winter months: Summary of the results of monitoring the species composition and abundance of aquatic organisms in adjacent streams during the growing seasons 2018 to 2020.
Peterka, Jiří ; Blabolil, Petr ; Kučerová, Andrea ; Matěna, Josef ; Bešta, Tomáš ; Rychtecký, Pavel
The aim of the report is to document the effect of chloride toxicity on aquatic organisms in the recipients in the vicinity of the D8 motorway, km 48,276 - 64,689, where the motorway passes through the České středohoří Protected Landscape Area. The summary of the achieved results for the vegetation seasons 2018 till 2020 is the content of the presented report.
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Complex survey of the fish stock of Lake Chabařovice in 2020.
Peterka, Jiří
Aim of the complex ichthyological survey of Lake Chabařovice was to map the current state and succession of lake’s fish stock with particular emphasis put on abundance and biomass estimates of all fish species, evaluation of possible risks to the further development of the fish stock and recommendations for the lake management. Summarization of achieved results and recommendations for further monitoring are included in the presented report.
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Hydrobiological monitoring of Lake Medard in 2020.
Peterka, Jiří ; Hejzlar, Josef ; Nedoma, Jiří ; Znachor, Petr ; Seďa, Jaromír
The aim of this report is to summarize the results achieved in 2020 and make recommendations for further monitoring. The year 2020 was the third year after the full filling of the lake. The lake ecosystem has reached a final state in terms of hydrological regime and nutrient load, which is characterized by very low water turnover, low trophic state with low productivity of planktonic communities, development of submerged macrovegetation in littoral areas and specific seasonal changes in chemistry and biological parameters. However, the aquatic ecosystem is far from being stabilized and the biological communities of the littoral and the open water areas, including the fish community, are still changing considerably from year to year.
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Complex survey of the fish stock of Lake Most in 2020.
Peterka, Jiří
Aim of the complex ichthyological survey of Lake Most was to map the current state and succession of lake’s fish stock with particular emphasis put on abundance and biomass estimates of all fish species, evaluation of possible risks to the further development of the fish stock and recommendations for the lake management. Summarization of achieved results and recommendations for further monitoring are included in the presented report.
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Methodology of predatory fish quantification in reservoirs and lakes.
Blabolil, Petr ; Jůza, Tomáš ; Vašek, Mojmír ; Peterka, Jiří
The publication contains an evaluation of surveying 36 reservoirs and artificial lakes in the years 1985–2020 in different parts of the Czech Republic by four sampling methods, which are further divided according to the sampling environment, daily periods and targeted age groups of predatory fish. The methods are gillnets, seines, trawls and continuous boat electrofishing. The catchability, standardized and relative abundance of asp, pikeperch, pike and catfish are evaluated. Based on these data, the reader can decide which method to use to detect a particular predatory species and compare the results with the situation in other localities.
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Results of extended research of the ichthyofauna of lakes Laka and Čertovo, including adjacent streams.
Blabolil, Petr ; Hlaváč, J. ; Hůda, J. ; Kolařík, Tomáš ; Kortan, D. ; Muška, Milan ; Peterka, Jiří ; Vrba, Jaroslav
The report describes the results of an ichthyofauna survey in two areas of the Šumava National Park, where catches were made by an electric generator in the spring of 2021. This is the first direct evidence of natural reproduction of brown trout in the parts previously heavily affected by acidification.
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Results of the autumn extended research of the ichthyofauna of the lakes Laka and Čertovo, including the adjacent streams.
Blabolil, Petr ; Bartoň, Daniel ; Draštík, Vladislav ; Jůza, Tomáš ; Hladík, Milan ; Holubová, Michaela ; Hůda, J. ; Kočvara, Luboš ; Muška, Milan ; Peterka, Jiří ; Vrba, Jaroslav
The report describes the results of a unique survey of the ichthyofauna in two areas of the Šumava National Park, where catches were made by an electric generator in the autumn of 2021.
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Poetry in the Service of Ideology
Hofmanová, Petra ; Peterka, Josef (advisor) ; Mocná, Dagmar (referee)
English Resume This thesis is based on thorough examination of collection of poems written by Ivan Skála "Co si beru na cestu" (What I take for a journey) in 1975. The collection got National award of Klement Gottwald and therefore it's possible to consider it to be one of the canonical pieces of socialistic literature. The thesis demonstrates the fact, that the collection is not representation of pure political lyrics. The collection is a combination of intimate and natural lyrics, also its propagandistic function is apparent because of its author's political involvement and orientation. The thesis discovers the ways of realization of propagandistic function and its most common methods. Motives of socialistic propaganda are more or less hidden in the whole collection, however they are present both in poems of purely political nature and natural and reflexive lyrics. Through an analysis of text levels (formal, thematic, language) I tried to characterize the ideological schemes contained in whole collection. One of the interesting conclusions is the fact, that the collection is characterized by the intimate manifestation of its author, who reflects his own original values. His lyrical hero is an ideal citizen characterized by passion for hard work a love for his country. He's disposed of any eroticism and...
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Space of Zakarpattia in the Czech literature
Krabsová, Veronika ; Peterka, Josef (advisor) ; Mocná, Dagmar (referee)
This thesis deals with the phenomenon of Carpathian Ruthenia, or Zakarpattia, which is one of the most discussed issues in Czech literature. It expands the traditional view of the issue with a chronological survey of works by Czech authors who were inspired by Carpathian Ruthenia, and maps their writings created from the end of the 19th century to the beginning of the 21st century. It focuses on their interpretation, with particular reference to the topology. The first chapter presents the terminological problems associated with the territory of the Transcarpathian region and briefly summarizes its history. The next chapter submits an account of the exceptional nature of this area (its contrasts, periphery, regionalism, myths, exoticism, idylls and adventures), and attempts to characterize its uniqueness (backwardness, belief in superstitions, Jews, alcoholism, poachers, enchanting countryside and outlaws). Carpathian Ruthenia appears to be a place of secrecy, where hypothetical characters grow. The topology of the mountain is also an important element. The following chapter, the longest, presents most of the works by the Czech authors who were inspired by this region. The first of these authors came to Carpathian Ruthenia during the 1920s as government workers or tourists. Their works are arranged...
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Analysis of SLD DNS servers state
Šťastný, Petr ; Peterka, Jiří (advisor) ; Obdržálek, David (referee)
The publication contains a brief introduction into the system of domain names on the Internet (DNS) and into DNS protocol and its functioning. The main part is a methodology for systematic examination of a domain name and its name servers, offering criteria for checking validity of DNS records and functionality and availability of DNS servers. This methodology is then implemented as a web application that allows us to perform an on-line analysis of a domain name and the evaluation of discovered errors and other problems. The second part of the implementation is a tool for bulk analysis of large number of domain names, which was subsequently used for analysis of all domain names under TLD CZ; its short results are mentioned in the end of the work.
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