Outputs

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Name of project/author

01/08/2012

Light as a factor affecting the concentration of simple organics in the traps of aquatic carnivorous Utricularia species

Rootless aquatic carnivorous Utricularia plants exude significant amounts of photosynthates into the trap fluid, where they have been shown to...

01/08/2012

Characterization and Cytocompatibility of Carbon Films

Carbon layers on polyethyleneterephtalate (PET) backing were prepared by 3 different deposition methods as evaporation, sputtering and photo induced...

12/07/2012

Comparison of Gill Nets and Fixed-Frame Trawls for Sampling Threadfin Shad in Tropical Reservoirs

Threadfin shad Dorosoma petenense populations were sampled quarterly from 2010 to 2011 to determine appropriate sampling techniques for this species...

10/06/2012

Littoral age 0+ fish distribution in relation to multi-scale spatial heterogeneity of a deep-valley reservoir

Littoral age 0+ fish were studied with respect to spatio-temporal heterogeneity in the deep-valley Římov Reservoir (Czech Republic) from June to...

08/05/2012

The size selectivity of the main body of a sampling pelagic pair trawl in freshwater reservoirs during the night

The aim of this study was to test the selectivity of a trawl main body, especially for small fish, during night sampling. The tested trawl had a mesh...

02/04/2012

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...

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...