Outputs

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Name of project/author

05/09/2008

Diel variation in gillnet catches and vertical distribution of pelagic fishes in a stratified European reservoir

he diel changes in gillnet catch rates and vertical distributions of pelagic fishes were determined in a deep, moderately eutrophic European...

28/08/2008

Effects of the construction of a reservoir on the fish assemblage in an inflow river

The construction of the Římov Reservoir on the Malše River in 1978 significantly influenced the fish assemblage within the river, above the...

03/08/2008

Microbial community development in the traps of aquatic Utricularia species

We examined trap fluid of three aquatic carnivorous species of Utricularia (Lentibulariaceae) to assess the role of microbial community within their...

08/07/2008

Distribution patterns of fishes in a canyon-shaped reservoir

In August 2004 and 2005, an extensive study of the fish community was carried out in the largest water supply reservoir in the Czech Republic and...

10/06/2008

The use of pelagic habitat by cyprinids in a deep riverine impoundment: Rimov Reservoir, Czech Republic

In the deep and slightly eutrophic dam part of the Rímov Reservoir (Czech Republic), the fish use of open water habitat was studied by means of...

18/04/2008

Diet of larvae and juvenile perch, Perca fluviatilis performing diel vertical migrations in a deep reservoir

Feeding behaviour of two functional groups of 0+ perch Perca fluviatilis (epilimnetic, staying all 24 hours in epilimnion; hypolimnetic, daily...

17/11/2007

Overestimation of percid fishes (Percidae) in gillnet sampling

Overestimation of the number of percid fishes taken by gillnets was studied in eight reservoirs in the Netherlands and the Czech Republic during...

01/09/2006

Chemical composition of modern and pre-acidification sediments in the Tatra Mountain lakes

Concentrations of major nutrients (C, N, P) and acid soluble metals (Ca, Mg, K, Al, Fe, Mn, Pb, and Zn) were determined in modern (0–1 cm) and...

15/10/2005

Aluminum control of phosphorus sorption by lake sediments

Release of reactive (phosphate-like) phosphorus (P) from freshwater sediments represents a significant internal P source for many lakes. Hypolimnetic...

21/01/2005

Primary production and microbial activity in the euphotic zone of Lake Baikal (Southern Basin) during late winter

Three years of regular weekly/biweekly monitoring of seasonal changes in temperature, transparency, chlorophyll a (CHL) and bacteria at the vertical...

27/08/2004

Longitudinal and vertical spatial gradients in the distribution of fish within a canyon-shaped reservoir

The large-scale spatial distribution of fish was investigated within a morphometrically simple canyon-shaped reservoir with a single major tributary...

05/10/2002

The diet and growth of larval and juvenile pikeperch (Stizostedion lucioperca (L.)): A comparative study of fishponds and a reservoir

Diet of larval and juvenile pikeperch (Stizostedion lucioperca) reared in ponds was investigated and compared with the diet of pikeperch from a...

06/09/2001

Natural inactivation of phosphorus by aluminum in atmospherically acidified water bodies

Atmospheric acidification of catchment–lake ecosystems may provide natural conditions for the in-lake control of P cycling. This process is based...

05/02/2001

Spectrophotometric determination of iron, aluminum, and phosphorus in soil and sediment extracts after their nitric and perchloric acid digestion

Pyrocatechol violet and thiocyanate methods used in the water analysis for spectrophotometric determination of aluminum (Al) and iron (Fe),...

02/02/2001

Hydroacoustic assessment of pelagic stages of freshwater insects

Two independent surveys showed that aquatic insects can generate echoes comparable with the echoes of small fish. In the open water of two fishless...

03/05/2000

Phosphorus inactivation by aluminum in the water column and sediments: Lowering of in-lake phosphorus availability in an acidified watershed-lake ecosystem

Acid precipitation has been shown to reduce phosphorus (P) outputs from terrestrial sources. We present field evidence that the in-lake P cycle may...