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Effect of D8 motorway salting in the winter months: Results of monitoring the species composition and abundance of aquatic organisms in adjacent streams during the 2020 growing season.
Blabolil, Petr ; Kučerová, Andrea ; Matěna, Josef ; Peltanová, Jana ; Bešta, Tomáš ; Rychtecký, Pavel ; Peterka, Jiří
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 season 2020 is the content of the presented report.
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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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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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