Post-spawning dispersal of tributary spawning fish species to a reservoir system
This study investigated the post-spawning dispersal of seven species occurring in a tributary of the Římov Reservoir during the years 2000-2004....
19/01/2012
The use of artificial spawning substrates in order to understand the factors influencing the spawning site selection, depth of egg strands deposition and hatching time of perch (Perca fluviatilis L.)
The distribution of egg strands of perch Perca fluviatilis and factors affecting this distribution, in terms of spawning sites and spawning depths...
06/12/2011
The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early stages of perch (Perca fluviatilis) and pikeperch (Sander lucioperca) in the bathypelagic layer of a canyon-shaped reservoir
The efficiency of different sized (0.5 m × 2 m, 1 m × 2 m, 2 m × 2 m, 4 m × 2 m) and coloured (black, white) ichthyoplankton trawl nets was...
18/10/2011
Location and timing of the deposition of egg strands by perch (Perca fluviatilis L.): the roles of lake hydrology, spawning substrate and female size
The reproduction biology of perch Perca fluviatilis was studied in relation to lake hydrology, spawning substrate and female size using SCUBA divers...
12/07/2011
Ecological implications of organic carbon dynamics in the traps of aquatic carnivorous Utricularia plants
Rootless aquatic carnivorous Utricularia exude up to 25% of their photosynthates into the trap lumen, which also harbours a complex microbial...
14/06/2011
The influence of diel period on fish assemblage in the unstructured littoral of reservoirs
Diel changes in littoral fish assemblage were studied in four reservoirs in the Czech Republic (Central Europe). The sampling was performed by beach...
16/11/2010
A model of gillnet catch in relation to the catchable biomass, saturation, soak time and sampling period
We developed a new approach for evaluating gillnet catches. A model of a gillnet catch was built to differentiate the effects of gillnet saturation,...
09/10/2010
Feeding behaviour determining differential capture success of evasive prey in underyearling European perch (Perca fluviatilis L.) and roach (Rutilus rutilus (L.))
The effect of feeding behaviour on the prey capture efficiency of young-of-the-year European perch and roach was investigated in laboratory...
12/08/2010
Sinusoidal swimming in fishes: the role of season, density of large zooplankton, fish length, time of the day, weather condition and solar radiation
The sinusoidal swimming of fish, previously interpreted as foraging behaviour, was studied with respect to season, density of large zooplankton, fish...
17/06/2010
Spatial and temporal changes in phosphorus partitioning within a freshwater cyanobacterial mat community
Spatial and temporal changes in phosphorus (P) distribution, partitioning and mobility in the benthic cyanobacterial mat (CBM) were evaluated using...
12/04/2010
Deep spawning of perch (Perca fluviatilis, L.) in the newly created ChabaA (TM) ovice Lake, Czech Republic
The egg strands of perch were found at up to a depth of 20.2 m and, on average, 88% of perch spawning activity occurred at depths greater than 3 m....
18/03/2010
The influence of the trawl mouth opening size and net colour on catch efficiency during sampling of early fish stages
The efficiency of different sized (0.5 m × 2 m, 1 m × 2 m, 2 m × 2 m, 4 m × 2 m) and coloured (black, white) ichthyoplankton trawl nets and the...
07/01/2010
Fish activity as determined by gillnet catch: A comparison of two reservoirs of different turbidity
Fish activity was monitored analyzing the catches of gillnets exposed for short time intervals at night. Experiments were done in two Central...
30/10/2009
Electrical properties of flash-evaporated carbon nanolayers on PTFE
Potential application of flash-deposited carbon layers depends crucially on their mechanical properties. For applications in electron microscopy the...
15/09/2009
Utricularia carnivory revisited: plants supply photosynthetic carbon to traps
The rootless, aquatic Utricularia species belong to the largest and most cosmopolitan carnivorous plant genus. Populations of Utricularia plants are...
26/08/2009
Au-nanoparticles grafted on plasma treated PE
Polyethylene (PE) surface was treated with At plasma. Activated surface was grafted from methanol solution of 1,2-ethanedithiol. Then the sample was...
17/07/2009
Differences in feeding selectivity and efficiency between young-of-the-year European perch (Perca fluviatilis) and roach (Rutilus rutilus) – field observations and laboratory experiments on the importance of prey movement apparency vs. evasiveness
Feeding selectivity and efficiency of young-of-the-year European perch and roach were compared under field and laboratory conditions. In laboratory...
03/05/2009
Distribution of egg strands of perch (Perca fluviatilis L.) with respect to depth and spawning substrate
The distribution of egg strands of perch Perca fluviatilis was studied in relation to water depth and spawning substrate during late April and early...
08/04/2009
Hydroacoustic estimates of fish stocks in temperate reservoirs: day or night surveys?
Day and night acoustic surveys were used to compare fish stock estimates at eight European reservoirs and one flooded mining pit. During both...
09/03/2009
Characterization of carbon nanolayers flash evaporated on PET and PTFE
Carbon nanolayers were prepared by flash evaporation of carbon filaments onto polyethyleneterephthalate and polytetrafluoroethylene substrates. The...