juraj bebej - Academia.edu (original) (raw)
Papers by juraj bebej
Bioclimatology and Natural Hazards, 2009
ABSTRACT Disturbance events may be human-induced or natural, both typically causing changes in ec... more ABSTRACT Disturbance events may be human-induced or natural, both typically causing changes in ecosystem properties and functions (Wright and Coleman 2002). Many observations show an increasing frequency of risks related to natural hazards in most parts of Europe. Natural hazards (flood, drought, erosion, fire, storm damage, etc.), driven by weather extremes, are increasing as a consequence of climate change (Thürig et al. 2005, Anonymous 2007).
GEOLOGICA CARPATHICA- …, 1999
... AND EMPA STUDY. ADRIAN BIRON * , JAN SOTAK, JURAJ BEBEJ. Geological Institute, Slovak Academy... more ... AND EMPA STUDY. ADRIAN BIRON * , JAN SOTAK, JURAJ BEBEJ. Geological Institute, Slovak Academy of Sciences, Severna 5, 974 01 Banska Bystrica, Slovak Republic; *biron@gu.bb.sanet.sk. Abstract: Trioctahedral clay ...
GEOLOGICA …, 1993
Volume 2, number 2/1993, pages 65-79. "BÜNDNERSCHIEFER" METASEDIMENTS OF THE POZDISOVCE... more Volume 2, number 2/1993, pages 65-79. "BÜNDNERSCHIEFER" METASEDIMENTS OF THE POZDISOVCE-INACOVCE UNIT: METAMORPHIC PETROLOGY DATA. ADRIAN BIRON 1 ,JAN SOTAK 1 , JAN SPISIAK 1 , JURAJ BEBEJ 1 , JULIUS MAGYAR 2. ...
Soil and Water Research, 2008
PICHLER, V., GREGOR, J., HOMOLÁK, M., CAPULIAK, J. BEBEJ, J., VÁĽKA, J. 2007. Prediction of mediu... more PICHLER, V., GREGOR, J., HOMOLÁK, M., CAPULIAK, J. BEBEJ, J., VÁĽKA, J. 2007. Prediction of mediumand long-term changes in soil reaction in a beech forest based on observations in the beech stemflow zone. Folia oecol., 34: 146–152. The active soil reaction in a mature beech forest subjected to alkaline dust deposition reflected parallel influence of both alkaline and acid deposition. As a result, the active soil reaction within the stemflow zone at the depth of 5–10 cm decreased from 7.4 and 6.5 to 5.9 and 4.7, respectively. Outside the stemflow zone, the soil pH values were reduced from 7.9 to 6.6. This phenomenon occurred due to the long-range acid air pollution transport. Stechiometric calculations showed that the amount of acid deposition was amplified through the stemflow effect in beech trees that in their turn partly offset the alkaline deposition. Thus, the active reaction of the topsoil subjected to stemflow moved from moderately alkaline to moderately acid range during the...
The specific type of sediments, which arise in subduction complexes are serpentinitic sandstones.... more The specific type of sediments, which arise in subduction complexes are serpentinitic sandstones. Their mate rial originates from disintegrated ophiolite series. The first occurrences of serpentinitic sandstones in the Western Carpa thians have been recorded from the Peri-Klippen area in Eastern Slovakia (Sambron-Kamenica Zone). They occur within the Upper Oligocene flysch formations. The sequence is notable for its thin-rhythmic character and the constant thickness of the sandstone-claystone intervals ("zebra"- type flysch). The proportions Q25F8L67 express the average modal compo sition of the sandstones. The high content of detrital serpentinites and glassy clasts (Lv * 62%) causes a prevalence of un stable lithic components. The interstitial material of sandstones corresponds mainly to pseudomatrix (originating from the breakdown of lithic grains), recrystallized during diagenesis into orthomatrix and/or epimatrix. In diagrams for determin ing the provenance of ar...
Journal of Hydrology and Hydromechanics
The application of Brilliant Blue FCF tracer enables to identify flow types in multi-domain porou... more The application of Brilliant Blue FCF tracer enables to identify flow types in multi-domain porous systems of soils via analyses of morphologic parameters of stained objects occurring in dye pattern profiles, as they represent the footprint of flow processes which occurred in soil during both the infiltration and the redistribution of dye solution. We analysed the vertical dye pattern profiles exposed for different time lengths, and revealed temporal evolution of dye solution redistribution leading to changes in flow types. The field experiment was performed with the Brilliant Blue tracer (the 10 g l−1 concentration) applied on 1m x 1m surface of the Dystric Cambisol. The top litter horizon had been removed before 100 l of the tracer was applied. Four vertical profiles were excavated on the experimental plot (always 20 cm apart) at different times after the irrigation had been finished: 2 hours (CUT 2), 24 hours (CUT 24), 27 hours (CUT 27) and 504 hours (CUT 504). The analyses of th...
Central European Forestry Journal
We performed field experiment with 10 g l −1 concentration of Brilliant Blue solutes in 100 l of ... more We performed field experiment with 10 g l −1 concentration of Brilliant Blue solutes in 100 l of water sprinkling on 1 × 1 m surface of the Dystric Cambisol. Consequently, four vertical profiles were exposed at experimental plot after 2 hours (CUT 2), 24 hours (CUT 24), 27 hours (CUT 27) and after 504 hours (CUT 504) in order to analyse spatiotemporal interactions among the BB solution (Na-salts), soil exchangeable complex and fine earth soil (%) samples extracted from both the high and low coloured zones located around the optically visualised macropore preferred flow (PF) zones. The concentration changes were quantifying via soil profiles not affected by BB (termed as REF) located in the close vicinity of experimental plot. Observed changes in pH (H 2 O), chemical composition of fineearth soil, as well as in concentration of Na + in soil exchangeable complex to suggest, the BB dye solution didn't represent an inert tracer, but compounds strongly involved in reaction with surrounding soils. Recorded chemical trends seems to be the result both the competitive processes between the Na + of BB dye solution and composition of surrounding soil exchangeable complex, as well and the spatial-temporal controlled mechanism of dye solution transfer in soil.
Central European Forestry Journal
The aim of the paper is to demonstrate how the beech surface humus form and forest density affect... more The aim of the paper is to demonstrate how the beech surface humus form and forest density affect the infiltration and redistribution of rainwater into the soil matrix. Beech as the most-abundant tree species in Slovakia has a tendency to form a compact humus layer with specific structure, leading to a reduction in the soil surface infiltration area and a significant influence on the preferential flow generation. The research was carried out in beech forests with different forest stand density in the Vtáčnik Mountain (Central Slovakia). The maximal infiltration surface area 35.11 ± 6.58% of sand surface infiltration area was reached at the plot A (0.8). The minimal infiltration surface area was reached at the plot B (0.8) and was 19.45 ± 2.52%. Statistical tests confirmed a significant effect of the forest stand density on the surface infiltration area (p = 0.05) and number of infiltration inputs (p = 0.05). The results show a statistically significant influence of surface humus for...
Ekológia (Bratislava), 2017
There was a destructive flood on Gidra river on June induced by 104-mm rainfall during 3 h on 7 J... more There was a destructive flood on Gidra river on June induced by 104-mm rainfall during 3 h on 7 June 2011. The total flood discharge was estimated to be 531,000 m
The specific type of sediments, which arise in subduction complexes are serpentinitic sandstones.... more The specific type of sediments, which arise in subduction complexes are serpentinitic sandstones. Their mate rial originates from disintegrated ophiolite series. The first occurrences of serpentinitic sandstones in the Western Carpa thians have been recorded from the Peri-Klippen area in Eastern Slovakia (Šambron-Kamenica Zone). They occur within the Upper Oligocene flysch formations. The sequence is notable for its thin-rhythmic character and the constant thickness of the sandstone-claystone intervals ("zebra"-type flysch). The proportions Q25F8L67 express the average modal compo sition of the sandstones. The high content of detrital serpentinites and glassy clasts (Lv * 62%) causes a prevalence of un stable lithic components. The interstitial material of sandstones corresponds mainly to pseudomatrix (originating from the breakdown of lithic grains), recrystallized during diagenesis into orthomatrix and/or epimatrix. In diagrams for determin ing the provenance of arenites, the projection points of serpentinitic sandstones are concentrated in the field of magmaticarc related sandstones (Dickinson et al. 1983) or oceanic-arc related sandstones (Valloni 1985). The preservation of fragile clasts of serpentinite points to deposition from a diluted turbidite suspension. In dense flows with a high dispersive pressure caused by grain collisions the serpentinites should be almost destroyed. Accumulation of these clasts could also occur as a result of hydrodynamic separation, with the lighter grains of serpentinite reaching a higher level of the currents, which carries them to deeper parts of the basin. The occurrence of serpentinitic sandstones in the Šambron-Kamenica flysch deposits indicates a suture zone of the Terti ary collision occurring on the contact of the Central Carpathian Paleogene and the Klippen Belt. The flysch formations of the Šambron-Kamenica Zone are sediments of perisutural basins, which, to the north were connected with trench-type flysch deposits in the Magura Unit.
Bioclimatology and Natural Hazards, 2009
ABSTRACT Disturbance events may be human-induced or natural, both typically causing changes in ec... more ABSTRACT Disturbance events may be human-induced or natural, both typically causing changes in ecosystem properties and functions (Wright and Coleman 2002). Many observations show an increasing frequency of risks related to natural hazards in most parts of Europe. Natural hazards (flood, drought, erosion, fire, storm damage, etc.), driven by weather extremes, are increasing as a consequence of climate change (Thürig et al. 2005, Anonymous 2007).
GEOLOGICA CARPATHICA- …, 1999
... AND EMPA STUDY. ADRIAN BIRON * , JAN SOTAK, JURAJ BEBEJ. Geological Institute, Slovak Academy... more ... AND EMPA STUDY. ADRIAN BIRON * , JAN SOTAK, JURAJ BEBEJ. Geological Institute, Slovak Academy of Sciences, Severna 5, 974 01 Banska Bystrica, Slovak Republic; *biron@gu.bb.sanet.sk. Abstract: Trioctahedral clay ...
GEOLOGICA …, 1993
Volume 2, number 2/1993, pages 65-79. "BÜNDNERSCHIEFER" METASEDIMENTS OF THE POZDISOVCE... more Volume 2, number 2/1993, pages 65-79. "BÜNDNERSCHIEFER" METASEDIMENTS OF THE POZDISOVCE-INACOVCE UNIT: METAMORPHIC PETROLOGY DATA. ADRIAN BIRON 1 ,JAN SOTAK 1 , JAN SPISIAK 1 , JURAJ BEBEJ 1 , JULIUS MAGYAR 2. ...
Soil and Water Research, 2008
PICHLER, V., GREGOR, J., HOMOLÁK, M., CAPULIAK, J. BEBEJ, J., VÁĽKA, J. 2007. Prediction of mediu... more PICHLER, V., GREGOR, J., HOMOLÁK, M., CAPULIAK, J. BEBEJ, J., VÁĽKA, J. 2007. Prediction of mediumand long-term changes in soil reaction in a beech forest based on observations in the beech stemflow zone. Folia oecol., 34: 146–152. The active soil reaction in a mature beech forest subjected to alkaline dust deposition reflected parallel influence of both alkaline and acid deposition. As a result, the active soil reaction within the stemflow zone at the depth of 5–10 cm decreased from 7.4 and 6.5 to 5.9 and 4.7, respectively. Outside the stemflow zone, the soil pH values were reduced from 7.9 to 6.6. This phenomenon occurred due to the long-range acid air pollution transport. Stechiometric calculations showed that the amount of acid deposition was amplified through the stemflow effect in beech trees that in their turn partly offset the alkaline deposition. Thus, the active reaction of the topsoil subjected to stemflow moved from moderately alkaline to moderately acid range during the...
The specific type of sediments, which arise in subduction complexes are serpentinitic sandstones.... more The specific type of sediments, which arise in subduction complexes are serpentinitic sandstones. Their mate rial originates from disintegrated ophiolite series. The first occurrences of serpentinitic sandstones in the Western Carpa thians have been recorded from the Peri-Klippen area in Eastern Slovakia (Sambron-Kamenica Zone). They occur within the Upper Oligocene flysch formations. The sequence is notable for its thin-rhythmic character and the constant thickness of the sandstone-claystone intervals ("zebra"- type flysch). The proportions Q25F8L67 express the average modal compo sition of the sandstones. The high content of detrital serpentinites and glassy clasts (Lv * 62%) causes a prevalence of un stable lithic components. The interstitial material of sandstones corresponds mainly to pseudomatrix (originating from the breakdown of lithic grains), recrystallized during diagenesis into orthomatrix and/or epimatrix. In diagrams for determin ing the provenance of ar...
Journal of Hydrology and Hydromechanics
The application of Brilliant Blue FCF tracer enables to identify flow types in multi-domain porou... more The application of Brilliant Blue FCF tracer enables to identify flow types in multi-domain porous systems of soils via analyses of morphologic parameters of stained objects occurring in dye pattern profiles, as they represent the footprint of flow processes which occurred in soil during both the infiltration and the redistribution of dye solution. We analysed the vertical dye pattern profiles exposed for different time lengths, and revealed temporal evolution of dye solution redistribution leading to changes in flow types. The field experiment was performed with the Brilliant Blue tracer (the 10 g l−1 concentration) applied on 1m x 1m surface of the Dystric Cambisol. The top litter horizon had been removed before 100 l of the tracer was applied. Four vertical profiles were excavated on the experimental plot (always 20 cm apart) at different times after the irrigation had been finished: 2 hours (CUT 2), 24 hours (CUT 24), 27 hours (CUT 27) and 504 hours (CUT 504). The analyses of th...
Central European Forestry Journal
We performed field experiment with 10 g l −1 concentration of Brilliant Blue solutes in 100 l of ... more We performed field experiment with 10 g l −1 concentration of Brilliant Blue solutes in 100 l of water sprinkling on 1 × 1 m surface of the Dystric Cambisol. Consequently, four vertical profiles were exposed at experimental plot after 2 hours (CUT 2), 24 hours (CUT 24), 27 hours (CUT 27) and after 504 hours (CUT 504) in order to analyse spatiotemporal interactions among the BB solution (Na-salts), soil exchangeable complex and fine earth soil (%) samples extracted from both the high and low coloured zones located around the optically visualised macropore preferred flow (PF) zones. The concentration changes were quantifying via soil profiles not affected by BB (termed as REF) located in the close vicinity of experimental plot. Observed changes in pH (H 2 O), chemical composition of fineearth soil, as well as in concentration of Na + in soil exchangeable complex to suggest, the BB dye solution didn't represent an inert tracer, but compounds strongly involved in reaction with surrounding soils. Recorded chemical trends seems to be the result both the competitive processes between the Na + of BB dye solution and composition of surrounding soil exchangeable complex, as well and the spatial-temporal controlled mechanism of dye solution transfer in soil.
Central European Forestry Journal
The aim of the paper is to demonstrate how the beech surface humus form and forest density affect... more The aim of the paper is to demonstrate how the beech surface humus form and forest density affect the infiltration and redistribution of rainwater into the soil matrix. Beech as the most-abundant tree species in Slovakia has a tendency to form a compact humus layer with specific structure, leading to a reduction in the soil surface infiltration area and a significant influence on the preferential flow generation. The research was carried out in beech forests with different forest stand density in the Vtáčnik Mountain (Central Slovakia). The maximal infiltration surface area 35.11 ± 6.58% of sand surface infiltration area was reached at the plot A (0.8). The minimal infiltration surface area was reached at the plot B (0.8) and was 19.45 ± 2.52%. Statistical tests confirmed a significant effect of the forest stand density on the surface infiltration area (p = 0.05) and number of infiltration inputs (p = 0.05). The results show a statistically significant influence of surface humus for...
Ekológia (Bratislava), 2017
There was a destructive flood on Gidra river on June induced by 104-mm rainfall during 3 h on 7 J... more There was a destructive flood on Gidra river on June induced by 104-mm rainfall during 3 h on 7 June 2011. The total flood discharge was estimated to be 531,000 m
The specific type of sediments, which arise in subduction complexes are serpentinitic sandstones.... more The specific type of sediments, which arise in subduction complexes are serpentinitic sandstones. Their mate rial originates from disintegrated ophiolite series. The first occurrences of serpentinitic sandstones in the Western Carpa thians have been recorded from the Peri-Klippen area in Eastern Slovakia (Šambron-Kamenica Zone). They occur within the Upper Oligocene flysch formations. The sequence is notable for its thin-rhythmic character and the constant thickness of the sandstone-claystone intervals ("zebra"-type flysch). The proportions Q25F8L67 express the average modal compo sition of the sandstones. The high content of detrital serpentinites and glassy clasts (Lv * 62%) causes a prevalence of un stable lithic components. The interstitial material of sandstones corresponds mainly to pseudomatrix (originating from the breakdown of lithic grains), recrystallized during diagenesis into orthomatrix and/or epimatrix. In diagrams for determin ing the provenance of arenites, the projection points of serpentinitic sandstones are concentrated in the field of magmaticarc related sandstones (Dickinson et al. 1983) or oceanic-arc related sandstones (Valloni 1985). The preservation of fragile clasts of serpentinite points to deposition from a diluted turbidite suspension. In dense flows with a high dispersive pressure caused by grain collisions the serpentinites should be almost destroyed. Accumulation of these clasts could also occur as a result of hydrodynamic separation, with the lighter grains of serpentinite reaching a higher level of the currents, which carries them to deeper parts of the basin. The occurrence of serpentinitic sandstones in the Šambron-Kamenica flysch deposits indicates a suture zone of the Terti ary collision occurring on the contact of the Central Carpathian Paleogene and the Klippen Belt. The flysch formations of the Šambron-Kamenica Zone are sediments of perisutural basins, which, to the north were connected with trench-type flysch deposits in the Magura Unit.