Search Results - "Šorf, Michal"

Microbial food webs in hypertrophic fishponds: Omnivorous ciliate taxa are major protistan bacterivores by Šimek, Karel, Grujčić, Vesna, Nedoma, Jiří, Jezberová, Jitka, Šorf, Michal, Matoušů, Anna, Pechar, Libor, Posch, Thomas, Bruni, Estelle P., Vrba, Jaroslav

“…Despite the importance of shallow lakes worldwide, knowledge of microbial components, the base of their food webs, remains scarce. To close this gap, we…”
Get full text

Impact of nutrients and water level changes on submerged macrophytes along a temperature gradient: A pan‐European mesocosm experiment by Ersoy, Zeynep, Scharfenberger, Ulrike, Baho, Didier L., Bucak, Tuba, Feldmann, Tõnu, Hejzlar, Josef, Levi, Eti E., Mahdy, Aldoushy, Nõges, Tiina, Papastergiadou, Eva, Stefanidis, Konstantinos, Šorf, Michal, Søndergaard, Martin, Trigal, Cristina, Jeppesen, Erik, Beklioğlu, Meryem

“…Submerged macrophytes are of key importance for the structure and functioning of shallow lakes and can be decisive for maintaining them in a clear water state…”
Get full text

Zooplankton Biomass in Ponds - Determination of Biovolume and Dry Weight by Kopp, Radovan, Radojičić, Marija, Šorf, Michal

“…The aim of this study was to evaluate the possibility of using simple screening methods to determine zooplankton biomass in ponds. Among the applicable…”
Get full text

The Effect of Fish Production and Environmental Factors on Phytoplankton in Hypertrophic Fishponds by Radojičić, Marija, Kopp, Radovan, Müllerová, Barbora, Šorf, Michal

“…Fishponds form substantial part of standing water ecosystems in the landscape of the Central Europe. We studied the effects of fish production and…”
Get full text

The rotifer contribution to the diet of Eudiaptomus gracilis (G. O. Sars, 1863) (Copepoda, Calanoida) by Šorf, Michal, Brandl, Zdenek

“…We studied potentially omnivorous feeding of the common limnetic calanoid copepod Eudiaptomus gracilis using feeding experiments with subsequent gut content…”
Get full text

Effect of Bio-Enzymatic Preparation on Water Quality in Ponds and on Quantity and Quality of Fishpond Sediments by Müllerová, Barbora, Radojičić, Marija, Kopp, Radovan, Grmela, Jan, Šorf, Michal, Poštulková, Eva

“…The aim of this study was to evaluate the ability of a bacterial-enzymatic preparation to affect water quality, particularly the composition and the amount of…”
Get full text

Negative effects of undesirable fish on common carp production and overall structure and functioning of fishpond ecosystems by Kajgrová, Lenka, Blabolil, Petr, Drozd, Bořek, Roy, Koushik, Regenda, Ján, Šorf, Michal, Vrba, Jaroslav

“…Planktivorous undesirable fish may threaten both fishpond ecosystem functioning and common carp (Cyprinus carpio) farming. The present study revealed a…”
Get full text

Phytoplankton-zooplankton coupling in a cascade of hypertrophic fishponds by Radojičić, Marija, Šorf, Michal, Müllerová, Barbora, Kopp, Radovan

“…In Central Europe, a significant proportion of shallow lake ecosystems are represented by artificial fishponds, where phytoplankton and zooplankton are an…”
Get full text

Toxicity of atrazine and the products of its homogeneous photocatalytic degradation on the aquatic organisms Lemna minor and Daphnia magna by Klementová, Šárka, Hornychová, Lucie, Šorf, Michal, Zemanová, Jana, Kahoun, David

“…Usage of atrazine, a widely used herbicide, is now banned in many countries. Although forbidden to use, significant concentration of this herbicide is still…”
Get full text

Toxicity assessment of verapamil and its photodegradation products by Klementová, Šárka, Poncarová, Martina, Kahoun, David, Šorf, Michal, Dokoupilová, Eliška, Fojtíková, Pavla

“…Pathways of photochemical degradation of a cardiovascular drug verapamil under conditions relevant to natural waters and the toxicity of the photoproducts to…”
Get full text

The effect of clinoptilolite as a feed additive on selected rainbow trout (Oncorhynchus mykiss) haematological and biochemical parameters, before and after stress treatment by Brumovská, Veronika, Šorf, Michal, Mareš, Jan

“…Clinoptilolite, a natural zeolite, has been added to animal diets to enhance various production parameters. We conducted a feeding experiment, with subsequent…”
Get full text

Two-Decade Changes in the Ciliate Assemblage Feeding Pattern Reflect the Reservoir Nutrient Load by Macek, Miroslav, Vrba, Jaroslav, Hejzlar, Josef, Řeháková, Klára, Jarošík, Jiří, Šorf, Michal, Šimek, Karel

“…The perception of the importance of ciliate in freshwater has changed dramatically since the “microbial loop” conceptualisation, reflecting methodological…”
Get full text

Brewer's yeast as a diet supplement in carp aquaculture: impact on production coefficients and haematological and biochemical plasma parameters by Mareš, Jan, Poštulková, Eva, Malý, Ondřej, Zezula, Filip, Šorf, Michal, Všetičková, Lucie

“…While brewer's yeast (Saccharomyces cerevisiae), a rich source of proteins and B vitamins, is commonly used as an animal feed supplement, its use in…”
Get full text

Top-down and bottom-up control of plankton structure and dynamics in hypertrophic fishponds by Vrba, Jaroslav, Šorf, Michal, Nedoma, Jiří, Benedová, Zdenka, Kröpfelová, Lenka, Šulcová, Jana, Tesařová, Blanka, Musil, Martin, Pechar, Libor, Potužák, Jan, Regenda, Ján, Šimek, Karel, Řeháková, Klára

“…We investigated the effects of strong top-down control by high fish stock on structure and seasonal dynamics of plankton in nine fishponds under conventional…”
Get full text

Drivers of plant species composition of ecotonal vegetation in two fishpond management types by Francová, Kateřina, Šumberová, Kateřina, Kučerová, Andrea, Šorf, Michal, Grill, Stanislav, Exler, Norbert, Vrba, Jaroslav

“…Plants play an important role in fishpond littorals, but little is known about factors influencing their presence and growth patterns. We surveyed vegetation…”
Get full text

Spatial context strongly affects community composition of both passively and actively dispersing pool invertebrates in a highly heterogeneous landscape by Juračka, Petr J., Dobiáš, Jakub, Boukal, David S., Šorf, Michal, Beran, Luboš, Černý, Martin, Petrusek, Adam

“…The spatial distribution of suitable habitats and dispersal abilities of the constituent taxa jointly affect the structure of metacommunities in standing…”
Get full text

An Experimental Insight into Extracellular Phosphatases - Differential Induction of Cell-Specific Activity in Green Algae Cultured under Various Phosphorus Conditions by Vrba, Jaroslav, Macholdová, Markéta, Nedbalová, Linda, Nedoma, Jiří, Šorf, Michal

“…Extracellular phosphatase activity (PA) has been used as an overall indicator of P depletion in lake phytoplankton. However, detailed insights into the…”
Get full text

Effects of trophic status, water level, and temperature on shallow lake metabolism and metabolic balance: A standardized pan-European mesocosm experiment by Scharfenberger, Ulrike, Jeppesen, Erik, Beklioğlu, Meryem, Søndergaard, Martin, Angeler, David G., Çakıroğlu, Ayşe l̇dil, Drakare, Stina, Hejzlar, Josef, Mahdy, Aldoushy, Papastergiadou, Eva, Šorf, Michal, Stefanidis, Konstantinos, Tuvikene, Arvo, Zingel, Priit, Adrian, Rita

“…Important drivers of gross primary production (GPP) and ecosystem respiration (ER) in lakes are temperature, nutrients, and light availability, which are…”
Get full text

Macrophyte assemblages in fishponds under different fish farming management by Francová, Kateřina, Šumberová, Kateřina, Kučerová, Andrea, Čtvrtlíková, Martina, Šorf, Michal, Borovec, Jakub, Drozd, Bořek, Janauer, Georg A., Vrba, Jaroslav

“…•Fishponds with similar management can have different macrophyte assemblages.•Fishpond macrophytes are influenced by farm management and water…”
Get full text

Zooplankton response to climate warming: a mesocosm experiment at contrasting temperatures and nutrient levels by Šorf, Michal, Davidson, Thomas A, Brucet, Sandra, Menezes, Rosemberg F, Søndergaard, Martin, Lauridsen, Torben L, Landkildehus, Frank, Liboriussen, Lone, Jeppesen, Erik

“…Zooplankton community response to the combined effects of nutrients and fish (hereafter N + F) at contrasting temperatures was studied in a long-term…”
Get full text