National Repository of Grey Literature 79 records found  1 - 10nextend  jump to record: Search took 0.00 seconds. 
Ichtyological survey of the Lipno reservoir in 2021.
Soukalová, Kateřina ; Kubečka, Jan ; Jůza, Tomáš ; Kočvara, Luboš ; Sajdlová, Zuzana ; Souza, Allan T. ; Kolařík, Tomáš
The report describes the evaluation of the development of fish communities and their quantity in the Lipno reservoir in 2021.
Ellimination of unwanted fish species from dam reservoirs - Possibilities, efficiency and economic evaluation.
Jůza, Tomáš ; Blabolil, Petr ; Čech, Martin ; Draštík, Vladislav ; Holubová, Michaela ; Hůda, J. ; Kočvara, Luboš ; Kolařík, Tomáš ; Muška, Milan ; Peterka, Jiří ; Prchalová, Marie ; Říha, Milan ; Sajdlová, Zuzana ; Tušer, Michal ; Vašek, Mojmír ; Vejřík, Lukáš ; Kubečka, Jan
spontaneous development of populations and the influence of human interventions. For situations where a certain part of the fish population needs to be caught, within the project 'Biomanipulation as a tool for improving the water quality of reservoirs', we tested the available approaches in terms of their effectiveness and difficulty. The target species of catches were mainly cyprinid fish (bream, bleak, roach, rudd, white bream), which feed mainly\non zooplankton and tend to form very large populations. Among the most effective methods of catch during spawning are catches using electrofishing boats and fyke nets. In the non-spawning period, it is possible to carry out mass catches using trawl nets. Catches are effective both before spawning (in April) and during the summer. However, with repeated catches in the same places, their effectiveness decreases as a result of the fish being spooked. The efficiency of the catches partially improves again if the catches are repeated with a break of approximately 1–2 weeks. Catches also vary according to the stocking density of a given water body. With effective catches, the cost of catching 1 kg of fish is in the range of CZK 15–50.
Improving the ecological potential and water quality in reservoirs using floating vegetation islands.
Čtvrtlíková, Martina ; Krolová, Monika ; Kučerová, Andrea ; Hejzlar, Josef ; Hladík, M. ; Kubečka, Jan
The aim of the two-year experiment was to verify the ability of four species of sedges and natural pioneering plants to grow on substrate-free floating islands.
Ichtyological survey of the Lipno reservoir in 2020.
Soukalová, Kateřina ; Kubečka, Jan ; Jůza, Tomáš ; Kočvara, Luboš ; Sajdlová, Zuzana ; Souza, Allan T. ; Kolařík, Tomáš
The report describes the results of an ichthyological survey of Lipno Reservoir and recommendations for further management.
Ichtyological assessment of Lipno Reservoir in 2019
Soukalová, Kateřina ; Kubečka, Jan ; Jůza, Tomáš ; Kočvara, Luboš ; Sajdlová, Zuzana ; Prachař, Zdeněk
The report summarizes the results of a comprehensive survey of the reverse of the Lipno reservoir in 2019. It contains information on the number of individual species, their population recruitment, age composition and distribution. It also contains conclusions and recommendations for management measures.
Ichthyological survey of the fish stock of Lipno Reservoir in 2018
Soukalová, Kateřina ; Kubečka, Jan ; Kočvara, Luboš ; Jůza, Tomáš ; Souza, Allan T.
The study evaluates the state and development of fish stock in relation to the current fishery management and develops proposals for further management of the fish community and fishery regulations at the Lipno reservoir.
Ichthyological survey of the asp spawning stock in the Švihov Reservoir in 2018
Šmejkal, Marek ; Bartoň, Daniel ; Blabolil, Petr ; Kolařík, Tomáš ; Soukalová, Kateřina ; Děd, Vilém ; Šmejkalová, Z. ; Kočvara, Luboš ; de Moraes, Karlos Ribeiro ; Kortan, D. ; Duras, J. ; Kubečka, Jan
The aim of the study was to evaluate the results of the asp population development in relation to the current fishery management and to develop proposals for the management of this predatory species in the future.
Report on the survey of behavior and biomanipulation function of Europaen catfish population in Římov Reservoir in 2017
Říha, Milan ; Vejřík, Lukáš ; Peterka, Jiří ; Kubečka, Jan
Report summarizes our research of behavior and movement of wels catfish (Silurus glanis) in the Římov reservoir in years 2017-2018. Data about behavior and distribution were collected using a positioning telemetry system.
Complex ichtyological investigation of the Lipno Reservoir in 2017
Soukalová, Kateřina ; Kubečka, Jan ; Bartoň, Daniel ; Děd, Vilém ; de Moraes, Karlos Ribeiro ; Jůza, Tomáš ; Souza, Allan T.
The aim of the study was to monitor the overall status of the fish stock of the Lipno reservoir in the key year 2017, when the fishing rules were changed. The catches of multimesh gillnets, fry trawling, seining and electrofishing, and the assessment of European catfish were evaluated. The species composition and relative abundance of fish in all significant reservoir volumes were found, and the year class strength of all species 2017 was quantified. The report also contains recommendations for further fishery management of the reservoir.

National Repository of Grey Literature : 79 records found   1 - 10nextend  jump to record:
See also: similar author names
2 Kubečka, Jakub
2 Kubečka, Jaroslav
Interested in being notified about new results for this query?
Subscribe to the RSS feed.