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125 results on '"Hejduk, Stanislav"'

8. Evaluation of the ECOSSE Model for Estimating Soil Respiration from Eight European Permanent Grassland Sites

Author

Abdalla, Mohamed, primary, Feigenwinter, Iris, additional, Richards, Mark, additional, Vetter, Sylvia Helga, additional, Wohlfahrt, Georg, additional, Skiba, Ute, additional, Pintér, Krisztina, additional, Nagy, Zoltán, additional, Hejduk, Stanislav, additional, Buchmann, Nina, additional, Newell-Price, Paul, additional, and Smith, Pete, additional

Published
2023
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9. An Overview of Permanent Grassland Grazing Management Practices and the Impacts on Principal Soil Quality Indicators

Author

Milazzo, Filippo, primary, Francksen, Richard M., additional, Abdalla, Mohamed, additional, Ravetto Enri, Simone, additional, Zavattaro, Laura, additional, Pittarello, Marco, additional, Hejduk, Stanislav, additional, Newell-Price, Paul, additional, Schils, René L. M., additional, Smith, Pete, additional, and Vanwalleghem, Tom, additional

Published
2023
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10. A Review of Permanent Grassland Grazing Management Practices and the Impacts on Principal Soil Quality Indicators

Author

Milazzo, Filippo, primary, Francksen, Richard M., additional, Abdalla, Mohamed, additional, Ravetto Enri, Simone, additional, Zavattaro, Laura, additional, Pittarello, Marco, additional, Hejduk, Stanislav, additional, Newell-Price, Paul, additional, Schils, René, additional, Smith, Pete, additional, and Vanwalleghem, Tom, additional

Published
2023
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14. Permanent grasslands in Europe: Land use change and intensification decrease their multifunctionality

Author

Schils, René L.M., primary, Bufe, Conny, additional, Rhymer, Caroline M., additional, Francksen, Richard M., additional, Klaus, Valentin H., additional, Abdalla, Mohamed, additional, Milazzo, Filippo, additional, Lellei-Kovács, Eszter, additional, Berge, Hein ten, additional, Bertora, Chiara, additional, Chodkiewicz, Anna, additional, Dǎmǎtîrcǎ, Claudia, additional, Feigenwinter, Iris, additional, Fernández-Rebollo, Pilar, additional, Ghiasi, Shiva, additional, Hejduk, Stanislav, additional, Hiron, Matthew, additional, Janicka, Maria, additional, Pellaton, Raoul, additional, Smith, Kate E., additional, Thorman, Rachel, additional, Vanwalleghem, Tom, additional, Williams, John, additional, Zavattaro, Laura, additional, Kampen, Jarl, additional, Derkx, Ria, additional, Smith, Pete, additional, Whittingham, Mark J., additional, Buchmann, Nina, additional, and Price, J. Paul Newell, additional

Published
2022
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15. Permanent grasslands in Europe: Land use change and intensification decrease their multifunctionality

Author

Schils, Rene L. M., Bufe, Conny, Rhymer, Caroline M., Francksen, Richard M., Klaus, Valentin H., Abdalla, Mohamed, Milazzo, Filippo, Lellei-Kovacs, Eszter, ten Berge, Hein, Bertora, Chiara, Chodkiewicz, Anna, Damatirca, Claudia, Feigenwinter, Iris, Fernandez-Rebollo, Pilar, Ghiasi, Shiva, Hejduk, Stanislav, Hiron, Matthew, Janicka, Maria, Pellaton, Raoul, Vanwalleghem, Tom, Zavattaro, Laura, Kampen, Jarl, Derkx, Ria, Smith, Pete, Whittingham, Mark J., Buchmann, Nina, and Newell Price, J. Paul

Subjects
Ecology
Abstract

Permanent grasslands cover 34% of the European Union's agricultural area and are vital for a wide variety of ecosystem services essential for our society. Over recent decades, the permanent grassland area has declined and land use change continues to threaten its extent. Simultaneously, the management intensity of permanent grasslands increased. We performed a systematic literature review on the multifunctionality of permanent grasslands in Europe, examining the effects of land use and management on 19 grassland ecosystem service indicators. Based on the evidence in 696 out of 70,456 screened papers, published since 1980, we found that both land use change and intensification of management decreased multifunctionality. In particular, preventing conversion of permanent grasslands to croplands secured the delivery of multiple ecosystem services. A lower management intensity was associated with benefits for biodiversity, climate regulation and water purification, but impacted the provision of high-quality animal feed. Increasing the number of species in the sward enhanced multifunctionality of permanent grassland without significant trade-offs such as losses in production. Our review covered many aspects of land use, management and ecosystem services, but we also identified areas with no or only few studies. The most prominent gaps were related to comparisons between permanent and temporary grasslands, and effects of management practices on the provision of cultural values, and on erosion and flood control. We suggest that, despite apparent changes in human dietary preferences, the protection of permanent grasslands in Europe must be prioritised. At the same time, considering the need to reduce ruminant livestock's contribution to climate change, the time seems ripe to increase support for low-intensity grassland management to optimise the provision of essential ecosystem services from Europe's permanent grasslands.

Published
2022

16. Delivery of ecosystem services from permanent grasslands in Europe: a systematic review

Author

Schils, R.L.M., Bufe, C., Rhymer, Caroline, Francksen, Richard M., Klaus, Valentin H., Abdalla, Mohamed, Milazzo, Filippo, Lellei-Kovacs, Eszter, ten Berge, H.F.M., Bertora, Chiara, Chodkiewicz, Anna, Dǎmǎtîrcǎ, Claudia, Feigenwinter, Iris, Fernández-Rebollo, Pilar, Ghiasi, Shiva, Hejduk, Stanislav, Hiron, Matthew, Janicka, Maria, Pellaton, Raoul, Smith, Kate E., Thorman, Rachel, Vanwalleghem, Tom, Williams, J., Zavattaro, L., Kampen, J.K., Derkx, M.P.M., Smith, P., Whittingham, Mark J., Buchmann, N., Newell Price, Paul, Delaby, Luc, Baumont, René, Brocard, Valérie, Lemauviel-Lavenant, Servane, Plantureux, Silvain, Vertès, Françoise, and Peyraud, Jean-Louis

Subjects
Agro-ecology, Land use change, Management, Multifunctionality, Library Research Support, Land Use and Food Security, Life Science, WASS, Farm Systems Ecology Group, Landgebruik en Voedselzekerheid, PE&RC, Agro Field Technology Innovations, Mathematical and Statistical Methods - Biometris, Wiskundige en Statistische Methoden - Biometris
Abstract

Permanent grasslands cover 34% of the European Union’s agricultural area and are vital for the delivery of essential ecosystem services. Over recent decades, permanent grasslands have suffered a significant decline and land use change continues to threaten their area. We performed a systematic review on the multifunctionality of permanent grasslands in Europe, examining the effects of land use change and management practices on 18 ecosystem service indicators. Based on the evidence in 696 out of 70,456 screened papers, we found that both land use change and intensification decreased multifunctionality. A lower management intensity was associated with benefits for biodiversity, climate regulation and water purification, but had a negative effect on the provision of high-quality animal feed. Increasing the number of species in the sward enhanced multifunctionality of permanent grassland without significant trade-offs such as losses in production. We suggest that a combined approach of protection and management extensification will help secure multiple benefits from permanent grasslands.

Published
2022

17. Ecosystem service research in grasslands at 31 experimental farms, networks and demonstration platforms across Europe

Author

Klaus, V.H., Newell Price, Paul, Bufe, C., Caraes, C., Chodkiewicz, Anna, Feigenwinter, Iris, Hejduk, Stanislav, Klopcic, Marija, Báldi, András, Lellei-Kovacs, Eszter, Lombardi, Giampiero, Markovic, M., Milazzo, Filippo, Oenema, J., Rankin, J., Enri, Simone Ravetto, Rhymer, Caroline M., Stypinski, Piotr, Tonn, Bettina, Vanwalleghem, Tom, Whittingham, Mark J., and Buchmann, Nina

Subjects
Land Use and Food Security, Life Science, Farm Systems Ecology Group, Landgebruik en Voedselzekerheid, PE&RC, Agro Field Technology Innovations
Published
2022

18. Ecosystem service research in grasslands at 31 experimental farms, networks and demonstration platforms across Europe

Author

Klaus, Valentin, Newell Price, J. Paul, Bufe, Conny, Caraes, C., Chodkiewicz, Anna, Feigenwinter, Iris, Hejduk, Stanislav, Klopčič, Matija, Báldi, Andrea, Lellei-Kovács, Eszter, Lively, Francis, Lombardi, G., Markovic, M., Milazzo, Filippo, Oenema, J., Rankin, Jason, Ravetto Enri, Simone, Rhymer, Caroline M., Schils, Rene L.M., Stypinski, Piotr, Tonn, Bettina, Vanwalleghem, Tom, Whittingham, Mark J., Buchmann, Nina, Delaby, Luc, Baumont, René, Brocard, Valérie, Lemauviel-Lavenant, Servane, Plantureux, Silvain, Vertès, Françoise, and Peyraud, Jean-Louis

Subjects
Permanent grassland, Ecosystem services, Biodiversity, Food production, Climate change adaptation, Research communication
Abstract

Grassland research stations and experimental farms are essential for applied grassland science and related outreach activities. A large proportion of the experiments conducted at these stations aims to test methods to optimize the ecosystem services (ES) delivered by permanent grasslands. We used the framework of the multi-actor research project SUPER-G to assess a selection of experiments recently conducted, completed (since 2011), and planned at 31 European experimental research stations, farms, or networks. We further provide an overview of the ES measured at these experiments. Results show that on average two ES were assessed per experiment. The most frequent ES measured were production (87% of all experiments), followed by the supporting ES biodiversity (59%) and climate regulation (33%). Our overview on ES research at European research stations highlights that permanent grassland is a multifunctional ecosystem that provides many benefits to society. Yet, research considering more than two ES is still relatively rare and should thus be strengthened in the future.

Published
2022

26. Assessment of ecosystem services from permanent grassland systems

Author

Korevaar, H., ten Berge, H.F.M., Bufe, Conny, Whittingham, Mark J., Smith, Pete, Vanwalleghem, Tom, Lellei-kovács, Eszter, Stypinski, Piotr, Hejduk, Stanislav, Tonn, Bettina, Sacco, Dario, and Newell-Price, Paul P.

Subjects
Land Use and Food Security, Life Science, Landgebruik en Voedselzekerheid, Agro Field Technology Innovations
Published
2019

27. Characterising permanent grassland-based farming systems in Europe

Author

Korevaar, H., Sacco, Dario, Ravetto Enri, Simone, Lombardi, Giampiero, ten Berge, H.F.M., Bufe, Conny, Whittingham, Mark J., Smith, Pete, Vanwalleghem, Tom, Lellei-kovács, Eszter, Stypinski, Piotr, Hejduk, Stanislav, Tonn, Bettina, and Newell Price, Paul J.

Subjects
Land Use and Food Security, Life Science, Landgebruik en Voedselzekerheid, Agro Field Technology Innovations
Published
2019

34. Position of light sources for VLC

Author

Vitasek, Jan, primary, Latal, Jan, additional, Stratil, Tomas, additional, Hejduk, Stanislav, additional, Vanderka, Ales, additional, and Hajek, Lukas, additional

Published
2017
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36. Fibre optic portable rail vehicle detector

Author

Kepak, Stanislav, additional, Cubik, Jakub, additional, Zavodny, Petr, additional, Hejduk, Stanislav, additional, Nedoma, Jan, additional, Davidson, Alan, additional, and Vasinek, Vladimir, additional

Published
2016
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37. Establishment of a hemiparasite Rhinanthus alectorolophusand its density‐dependent suppressing effect on a grass: A case study from golf roughs

Author

Hejduk, Stanislav, Bitomský, Martin, Pornaro, Cristina, and Macolino, Stefano

Abstract

Suppression effect of hemiparasites on grasses is a phenomenon, that can be utilized to increase biodiversity of various grassland systems. Host suitability, environmental effects, and hemiparasite abundance most likely influence the impact of parasitism on host height and biomass. However, the role of these factors is unclear in field conditions. We studied host suitability, establishment rates, and effects of a hemiparasitic plant Greater yellow rattle [ Rhinanthus alectorolophus(Scop.)] (RA) on canopy height and biomass of a grass tall fescue (Festuca arundinaceaSchreb.) in five trials with manipulated fertilization conducted in golf roughs. Particularly, we examined how grass height and biomass changed with increasing hemiparasite abundance. On average, grasses (nine in total) were better hosts than legumes (four in total). Tall fescue belonged to the group of better hosts. The average establishment rate of Rhinanthusplants ranged from 4.4 to 24.8% regardless of fertilization treatments. In fertilization trials, Rhinanthusdid not affect grass height but weakly suppressed grass biomass in non‐fertilized plots. The relationship between grass height/biomass and Rhinanthusabundance was best described by a logarithmic decay model. The suppressive effect tended to saturate (negative density dependence) in plots where the Rhinanthusabundance was very high. However, such high densities were quite rare and low Rhinanthusabundances were usually insufficient to substantially suppress grass growth. Our results indicate that we should aim for at least 50 Rhinanthus plants per 1 m2to achieve desirable effects on biodiversity and that Rhinanthusperformance will be better when nutrients are rather limiting.

Published
2020
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43. Biogas and Methane Yield from Rye Grass

Author

Vítěz, Tomáš, primary, Koutný, Tomáš, additional, Geršl, Milan, additional, Kudělka, Jan, additional, Nitayapat, Nuttakan, additional, Ryant, Pavel, additional, Hejduk, Stanislav, additional, Lošák, Tomáš, additional, Vítězová, Monika, additional, and Mareček, Jan, additional

Published
2015
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48. Real Measurements and Evaluation of the Influence of Atmospheric Phenomena on FSO Combined with Modulation Formats.

Author

Lata, Jan, Hajek, Lukas, Vanderka, Ales, Vitasek, Jan, Koudelka, Petr, and Hejduk, Stanislav

Subjects
FREE-space optical technology, WEATHER, RADIO waves, ATMOSPHERIC models, MODULATION theory
Abstract

The influence of atmospheric environment is fundamental for Free-Space Optical link (FSO). The atmosphere can significantly degrade the communication quality of FSO up to so low received power/RSSI level that it can lead to the loss of communication. For this reason, authors used a professional weather station built on site of FSO link for measurement of real atmospheric conditions such as wind speed, temperature, relative air humidity, air pressure and solar radiation. Random changing of these atmosphere parameters creates atmospheric turbulences, absorption and dispersion centers. It is necessary to specify the value of refractive index structure parameter cn2 because it determines the influence of atmosphere on the FSO. The first part of this article includes the theoretical calculation of cn2, there are used two models PAMELA and Macroscale-Meteorological model. The evaluation of the atmospheric influences and the RSSI value of received power level and also simulation of different types of modulation formats OOK-RZ, OOK-NRZ and BPSK in Optiwave is integral part of this article. [ABSTRACT FROM AUTHOR]

Published
2016
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