The utility of predatory fish in biomanipulation of deep reservoirs
Piscivorous fish may drive trophic cascades and maintain good water quality in lakes and reservoirs. Biomanipulation by stocking piscivores has been...
20/01/2013
15/12/2012
To migrate, or not to migrate: partial diel horizontal migration of fish in a temperate freshwater reservoir
The diel horizontal migration (DHM) of fish between the inshore and offshore zones of the Římov Reservoir (Czech Republic, deep, stratified,...
10/12/2012
Extremely shallow spawning of perch (Perca fluviatilis L.): the roles of sheltered bays, dense semi-terrestrial vegetation and low visibility in deeper water
The roles of wind protected bays, presence of littoral vegetation and light attenuation in the water column on spawning site selection and depth of...
26/11/2012
A simple method to correct the results of acoustic surveys for fish hidden in the dead zone
In lentic freshwater systems, vertical acoustics may underestimate fish abundance in the acoustic dead zone where fish detection capability is...
21/11/2012
What do results of common sequential fractionation and single-step extractions tell us about P binding with Fe and Al compounds in non-calcareous sediments?
Correct identification of P forms together with their main Fe and Al binding partners in non-calcareous sediments is of crucial importance for...
16/11/2012
Eel attacks-A new tool for assessing European eel (Anguilla anguilla) abundance and distribution patterns with gillnet sampling
Because of its complex life cycle, cryptic behavior, body shape, ability to excrete mucus and excellent maneuvering, the European eel (Anguilla...
30/08/2012
Surface properties of carbon structures evaporated on polytetrafluoroethylene
Carbon layers were deposited by flash evaporation from carbon fiber on polytetrafluoroethylene (PTFE). The layer thickness, surface roughness, and...
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...
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...