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1.

001-es BibID:BIBFORM107761
Első szerző:Fekete István
Cím:Humid, és száraz tölgyerdők talajainak eltérő szerves széntartalma, biológiai aktivitása, illetve a klíma szerepe a kialakult különbségekben / Fekete István, Kotroczó Zsolt, Berki Imre, Madarász Balázs, Makádi Marianna, Béni Áron, Juhos Katalin
Dátum:2022
Tárgyszavak:Természettudományok Környezettudományok előadáskivonat
könyvrészlet
Megjelenés:Talajtani Vándorgyűlés : absztraktfüzet / Magyar Talajtani Társaság. - p. 2-3
További szerzők:Kotroczó Zsolt (1975-) (biológus, ökológus) Berki Imre Madarász Balázs Makádi Marianna (1968-) (biológus) Béni Áron (1978-) (vegyész) Juhos Katalin
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2.

001-es BibID:BIBFORM106721
035-os BibID:(cikkazonosító)157106
Első szerző:Fekete István
Cím:Variability in litter inputs affecting soil fungi and bacteria through moisture and carbon content in forest soil / István Fekete, Borbála Bíró, Áron Béni, Gábor Várbíró, Katalin Juhos, Marianna Makádi, Zsolt Kotroczó
Dátum:2022
ISSN:2300-4975
Megjegyzések:Soil organic matter content is a main driver of soil functions and ecosystem services. Various quantity of litter inputs was studied in a Quercetum-petraeae-cerris forest in northeastern Hungary at the Síkfőkút DIRT (Detritus Input and Removal Treatment) experimental site. The goal of the project was to assess how rates and sources of plant litter inputs might control the accumulation and dynamics of organic matter and nutrients in forest soils over decadal time scales. Six treatments were applied at the experimental site. Beside the control (CO) condition, two detritus addition (double litter (DL) and double wood (DW)) and three detritus removal (no litter (NL), no roots (NR) and no input (NI) treatments were applied in which detritus quantities were manipulated above and below ground. Our aim was the study of the relationship between the litter treatments, their carbon (C) content and the number of microorganisms and biomass of fungi. Litter treatments also had a signifi cant effect on soil microorganisms and soil organic carbon (SOC) content. These effects decreased in parallel with soil depth. Fungal biomass values were more than fi ve times higher for DL (2 mg fungi g-1 soil) than for the soils of NI (0.4 mg fungi g-1 soil) condition in the upper 5 cm layer, while 0.57 (DL) and 0.08 (NI) values were measured in the 15-25 cm layer. The most probable number (MPN) method, which measures the number of certain groups of living and active microorganisms (fungi and bacteria), showed even greater differences between the treatments. Positive direct and indirect effects of greater organic matter inputs is affected the soil functioning through on better moisture and C content in soils. Litter entering the forest fl oor resulted in a larger amount of organic substrate and inorganic nutrients. In addition, it resulted in more favorable microclimatic conditions (lower temperature and soil moisture fl uctuation) in the soils, which increased the number of microorganisms and the biomass of fungi. There is no signifi cant difference in the number of microbes between the control and doubling treatments (DL, DW). Furthermore, in the case of fungal biomass, there is a signifi cant difference only in the upper 5 cm layer of the DL. These results explain the signifi cantly higher SOC content of the DL treatment compared to the other treatments, suggesting a weaker priming effect. In summary, the results of our research suggest that litter removal had a much greater effect on soil microbial number and fungal biomass as well as SOC content than the addition of a similar amount of litter.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Soil organic matter
Soil biology
Litter manipulation
Climate change
Fungi and bacteria
Soil functioning
Megjelenés:Soil Science Annual. - 73 : 4 (2022), p. 1-11. -
További szerzők:Biró Borbála (1957-) (biológus) Béni Áron (1978-) (vegyész) Várbíró Gábor (biológus) Juhos Katalin Makádi Marianna (1968-) (biológus) Kotroczó Zsolt (1975-) (biológus, ökológus)
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3.

001-es BibID:BIBFORM101743
Első szerző:Fekete István
Cím:Nutrient content changes in a detritus manipulation experiment in a forest ecosystem / István Fekete, Áron Béni, Andrea Balláné Kovács, Katalin Juhos, Gábor Várbíró, Marianna Makádi, Ibolya Demeter, Zsolt Kotroczó
Dátum:2019
ISBN:978-963-490-148-8 978-963-490-149-5
Tárgyszavak:Természettudományok Környezettudományok előadáskivonat
könyvrészlet
Megjelenés:2nd Conference on Long-Term Field Experiments on the 90th anniversary of Westsik's experiment : proceedings book / ed. Makádi Marianna. - p. 129-130. -
További szerzők:Béni Áron (1978-) (vegyész) Balláné Kovács Andrea (1967-) (vegyész) Juhos Katalin Várbíró Gábor (biológus) Makádi Marianna (1968-) (biológus) Demeter Ibolya (1985-) (anyagmérnök) Kotroczó Zsolt (1975-) (biológus, ökológus)
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4.

001-es BibID:BIBFORM100909
035-os BibID:(WoS)000591000000001 (Scopus)85096346570
Első szerző:Fekete István
Cím:How will a drier climate change carbon sequestration in soils of the deciduous forests of Central Europe? / Fekete, István; Berki, Imre; Lajtha, Kate; Trumbore, Susan; Francioso, Ornella; Gioacchini, Paola; Montecchio, Daniela; Várbíró, Gábor; Béni, Áron; Makádi, Marianna; Demeter, Ibolya; Madarász, Balázs; Juhos, Katalin; Kotroczó, Zsolt
Dátum:2020
ISSN:0168-2563
Megjegyzések:Global warming is accompanied by increasing water stress across much of our planet. We studied soil biological processes and changes in soil organic carbon (SOC) storage in 30 Hungarian oak forest sites in the Carpathian Basin along a climatic gradient (mean annual temperature (MAT) 9.6-12.1 degrees C, mean annual precipitation (MAP) 545-725 mm) but on similar gently sloped hillsides where the parent materials are loess and weathered dust inputs dating from the end of the ice age. The purpose of this research was to understand how a drying climate, predicted for this region, might regulate long-term SOC sequestration. To examine the effects of decreasing water availability, we compared soil parameters and processes in three categories of forest that represented the moisture extremes along our gradient and that were defined using a broken-stick regression model. Soil biological activity was significantly lower in the driest ("dry") forests, which had more than double the SOC concentration in the upper 30 cm layer (3.28 g C/100 g soil +/- 0.11 SE) compared to soils of the wettest ("humid") forests (1.32 g C/100 g soil +/- 0.09 SE), despite the fact that annual surface litter production in humid forests was similar to 37% higher than in dry forests. A two-pool SOM model constrained to fit radiocarbon data indicates that turnover times for fast and slow pools are about half as long in the humid soil compared to the dry soil, and humid soils transfer C twice as efficiently from fast to slow pools. Enzyme activity and fungal biomass data also imply shorter turnover times associated with faster degradation processes in the soils of humid forests. Thermogravimetry studies suggest that more chemically recalcitrant compounds are accumulating in the soils of dry forests. Taken together, our results suggest that the predicted climate drying in this region might increase SOC storage in Central European mesic deciduous forests even as litter production decreases.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Biogeochemistry. - 152 : 1 (2020), p. 13-32. -
További szerzők:Berki Imre Lajtha, Kate Trumbore, Susan Francioso, Ornella Gioacchini, Paola Montecchio, Daniela Várbíró Gábor (biológus) Béni Áron (1978-) (vegyész) Makádi Marianna (1968-) (biológus) Demeter Ibolya (1985-) (anyagmérnök) Madarász Balázs Juhos Katalin Kotroczó Zsolt (1975-) (biológus, ökológus)
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5.

001-es BibID:BIBFORM100908
035-os BibID:(cikkazonosító)114918 (WoS)000609999200052 (Scopus)85098936740
Első szerző:Juhos Katalin
Cím:Carbon sequestration of forest soils is reflected by changes in physicochemical soil indicators : A comprehensive discussion of a long-term experiment on a detritus manipulation / Juhos Katalin, Madarász Balázs, Kotroczó Zsolt, Béni Áron, Makádi Marianna, Fekete István
Dátum:2021
ISSN:0016-7061
Megjegyzések:The interactions of climatic and geochemical factors control soil organic carbon storage capacity and turnover. The comprehensive evaluation of the effect of long-term detritus manipulation on the soil organic carbon, soil-forming processes and the soil physical and chemical properties will help us better understand the carbon sequestration of forest soils. The long-term (19 years) effect of detrital input and removal treatments (DIRT) on physicochemical soil properties were investigated at a Central-European forest site (Síkfőkút, Hungary). In contrast to the results of similar experiments in other parts of the world, the detritus input treatments affected the soil organic carbon and almost all of the soil physicochemical indicators for the upper 15 cm layer. Soil pH, potential acidity and base saturation decreased in the litter removal plots and increased in the detritus doubling treatments. A decrease in organic matter content in the litter removal plots explained the changes in bulk density, as the stability of aggregates also decreased with the decrease of exchangeable bases and organic colloids. In this respect, compared to the other DIRT sites and other similar experiments in the world, our experimental site is considered unique, as it has the highest clay content and the driest climate. We conclude that potential cation exchange capacity and base saturation (exch. Ca) play a fundamental role in predicting the occurrence of the carbon sequestration mechanisms. We suggest to include these parameters into current SOC models.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Geoderma. - 385 (2021), p. 1-9. -
További szerzők:Madarász Balázs Kotroczó Zsolt (1975-) (biológus, ökológus) Béni Áron (1978-) (vegyész) Makádi Marianna (1968-) (biológus) Fekete István
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6.

001-es BibID:BIBFORM106722
035-os BibID:(cikkazonosító)251 (Scopus)85146762696
Első szerző:Kotroczó Zsolt (biológus, ökológus)
Cím:Long-term changes in organic matter content and soil moisture determine the degree of root and soil respiration / Zsolt Kotroczó, Marianna Makádi, Tamás Kocsis, Áron Béni, Gábor Várbíró, István Fekete
Dátum:2023
ISSN:2223-7747
Megjegyzések:Carbon in soil is one of the most important indicators of soil fertility. Part of the carbon stored in them is returned to the atmosphere during soil respiration. Climate change and inappropriate land use can accelerate these processes. Our work aimed to determine how soil CO2 emissions change over ten years as a result of litter manipulation treatments. Plots at the Síkf?okút DIRT (Detritus Input and Removal Treatments) experimental site include doubling either leaf litter or wood, and removing all aboveground litter, all root inputs, or removing all litter inputs. With the help of this, we were able to examine not only the effects of the different organic matter intake but also the effects of the different microclimates that occur as a result of the treatments. Total soil respiration (root and microbial respiration) is a result of a persistent lack or excess of soil organic matter relative to soil moisture. Based on our studies, the increase in the intensity of root respiration on wetter soils was only half of the increase in respiration associated with decomposition activity. The sustained growth of leaf litter significantly increases soil respiration, which can be partly explained by the more favorable supply of nutrients to the decomposing organisms, and partly by the more favorable microclimatic conditions, however, these effects were only valid in the case of wetter soils. In the dry summer environment, we experienced higher CO2 emissions during litter removal treatments. In the first period between 2002 and 2004, even wetter root removal treatments showed a significantly higher CO2 emission, while in the period 2010-2012, surface litter removal treatments. The permanent removal of surface litter in the drier summer period resulted in the formation of a dense crack network, which increased the CO2 emission of these soils, which increases the soil organic carbon loss of the soil. Our study proves the advantages of mulching in terms of a more favorable microclimate of the soil surface and a balanced carbon balance of the soil-plant system.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
CO2-emission
respiration components
litter manipulation
SOM
soil moisture
Megjelenés:Plants-Basel. - 12 : 2 (2023), p. 1-13. -
További szerzők:Makádi Marianna (1968-) (biológus) Kocsis Tamás Béni Áron (1978-) (vegyész) Várbíró Gábor (biológus) Fekete István
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