Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Libor, Pechar"'
Autor:
Lenka Kajgrová, Vojtech Kolar, Koushik Roy, Zdeněk Adámek, Petr Blabolil, Radovan Kopp, Jan Mráz, Martin Musil, Oldřich Pecha, Libor Pechar, Jan Potužák, Jaroslav Vrba
Publikováno v:
Environmental Sciences Europe, Vol 36, Iss 1, Pp 1-9 (2024)
Abstract Background This study examines seasonal and regional trends in chlorophyll-a concentrations and the dynamics of nitrogen (N) and phosphorus (P) in 32 fishponds (resulting in 150 pond-year cases) employed for fish production. Fishponds have a
Externí odkaz:
https://doaj.org/article/989c7bd3a4a44e70b4c09593c112f527
Autor:
Matěj Orság, Jan Meitner, Milan Fischer, Eva Svobodová, Radovan Kopp, Jan Mareš, Petr Spurný, Libor Pechar, Ivana Beděrková, Jan Hanuš, Daniela Semerádová, Jan Balek, Marija Radojičić, Martin Hanel, Adam Vizina, Zdeněk Žalud, Miroslav Trnka
Publikováno v:
Water, Vol 15, Iss 8, p 1523 (2023)
Freshwater fish production is significantly correlated with water temperature, which is expected to increase under climate change. This study evaluated changes in water temperature and their impact on productive ponds at fisheries in the Czech Republ
Externí odkaz:
https://doaj.org/article/210189aaf7724032b7978ce0cff575e4
Autor:
Michal Šorf, Jaroslav Vrba, Estelle P. Bruni, Thomas Posch, Vesna Grujčić, Anna Matoušů, Jitka Jezberová, Karel Šimek, Libor Pechar, Jiří Nedoma
Publikováno v:
Limnology and Oceanography. 64:2295-2309
Despite the importance of shallow lakes worldwide, knowledge of microbial components, the base of their food webs, remains scarce. To close this gap, we investigated planktonic microbial food webs, in particular protistan bacterivory (for both ciliat
Publikováno v:
The Science of the total environment. 720
The phytoremediation abilities of Hornwort (Ceratophyllum demersum L.) were tested under greenhouse and field conditions. Plants were exposed for 8, 16, and 24 days (greenhouse with stable isotope
Publikováno v:
Soil and Water Research, Vol 4, Iss Special Issue 2, Pp S75-S82 (2009)
The comparisons of water and matter flows have been evaluated in three small catchments with different land uses in the Šumava Mountains in the south-west of the Czech Republic since 1999. The catchment of the Mlýnský stream was artificially drain
Externí odkaz:
https://doaj.org/article/091b9c7698f9470194820fdfabaebbe7
Publikováno v:
Science of The Total Environment. 766:142647
Biological processes tend to dominate the oxygen regime of productive waters. However, in shallow aquatic ecosystems, it is unclear whether the oxygen regime is driven by oxygen production and consumption in the water column or by sediment oxygen dem
Autor:
David Hlaváč, Marek Baxa, Libor Pechar, Pavel Hartman, Jan Másílko, Lucie Všetičková, Olga Valentová, Pavel Vejsada, Maria Anton-Pardo, Ján Regenda, Bořek Drozd, Zdeněk Adámek
Publikováno v:
Aquaculture International. 24:1681-1697
To test the influence of supplementary feeding with thermally treated cereals on nutrient budget and environmental and biotic variables, three different treatments were applied in four experimental ponds: two with thermally treated cereals, one with
Publikováno v:
Science of The Total Environment. 720:137292
The phytoremediation abilities of Hornwort (Ceratophyllum demersum L.) were tested under greenhouse and field conditions. Plants were exposed for 8, 16, and 24 days (greenhouse with stable isotope 133Cs), 8 days (field with 133Cs), and 8 days (climab
Publikováno v:
Wetlands Ecology and Management. 23:933-946
Spectral reflectance from water surfaces was measured in small (0.01–5 km2), turbid, eutrophic fishponds and mesotrophic quarry lakes in the Třeboň basin (South Bohemia, Czech Republic). A spectral scanner for direct field measurements from water
Publikováno v:
Ecological Engineering. 49:146-152
This paper presents an integrated approach to landscape functioning assessment combining energy efficiency and hydrochemical balance studies. Energy balance is expressed by surface temperature while hydrochemical balance is illustrated by electric co