Recherche documentaire
Trier par :
-
Liqiong Zhang / Xueying Mei / Yali Tang / Vladimir Razlutskij / Jiří Peterka / William D. Taylor / Luigi Naselli-Flores / Zhengwen Liu / Chunfu Tong / Xiufeng Zhang - 2022Nile tilapia is a highly invasive fish species, deliberately introduced into many lakes and reservoirs worldwide, sometimes resulting in significant ecosystem alterations. A short-term mesocosm experiment with and without Nile tilapia (Oreochromis niloticus) was designed to test the hypotheses...Contributeur (s):
-
Petr Blabolil / Martin Čech / Tomáš Jůza / Jiří Peterka - 2019Year to year fluctuations in 0+ fish cohort strength are a common phenomenon. Many factors can affect cohort strength during the fish's early life period. In this study, development of a 0+ pikeperch Sander lucioperca cohort in the pelagic zone was studied by trawling for 50 days from first...Contributeur (s):
-
Petr Blabolil / Milan Říha / Daniel Ricard / Jiří Peterka / Marie Prchalová / Mojmír Vašek / Martin Čech / Jaroslava Frouzová / Tomáš Jůza / Milan Muška / Michal Tušer / Vladislav Draštík / Zuzana Sajdlová / Marek Šmejkal / Lukáš Vejřík / Josef Matěna / David S. Boukal / David Ritterbusch / Jan Kubečka - 2017The assessment of ecological quality in freshwater ecosystems is a key issue in many countries, but conditions for the development of assessment methodologies are often country-specific. This study proposes a simple methodology for the assessment of the ecological potential of reservoirs based on...Contributeur (s):
-
Milan Říha / Jan Kubečka / Tomáš Mrkvička / Marie Prchalová / Martin Čech / Vladislav Draštík / Jaroslava Frouzová / Milan Hladík / Eva Hohausová / Oldřich Jarolím / Tomáš Juza / Michal Kratochvíll / Jiří Peterka / Michal Tušer / Mojmír Vašek - 2008The aim of this study was to quantify the efficiency of different lengths of beach seine nets for each diel period in freshwater reservoirs. Only fish older than young-of-the-year were considered. Nets of 10, 20 and 50 m length (“in-nets”) were tested in an enclosed area framed by a 200...Contributeur (s):
-
Vladislav Draštík / Jan Kubečka / Martin Čech / Jaroslava Frouzová / Milan Říha / Tomáš Juza / Michal Tušer / Oldřich Jarolím / Marie Prchalová / Jiří Peterka / Mojmír Vašek / Michal Kratochvíl / Josef Matěna / Tomáš Mrkvička - 2009Day and night acoustic surveys were used to compare fish stock estimates at eight European reservoirs and one flooded mining pit. During both photoperiods of summer, higher fish biomass was observed in the uppermost 4 m of the water column by horizontal beaming than in deeper water by...Contributeur (s):