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001-es BibID:	BIBFORM102735
035-os BibID:	(WoS)000468248000007 (Scopus)85058444972
Első szerző:	Torma Attila
Cím:	Species and functional diversity of arthropod assemblages (Araneae, Carabidae, Heteroptera and Orthoptera) in grazed and mown salt grasslands / Attila Torma, Péter Császár, Miklós Bozsó, Balázs Deák, Orsolya Valkó, Orsolya Kiss, Róbert Gallé
Dátum:	2019
ISSN:	0167-8809
Megjegyzések:	Grazing and mowing are widely applied management practices in semi-natural grasslands, which are one of the most important habitats for biodiversity conservation in Europe. Due to the decline in extensively grazing livestock numbers, an increasing area of formerly grazed grasslands has being used as mown grasslands. However, we have scarce information on how arthropod assemblages are influenced by mowing in formerly grazed pastures. We assessed the effects of mowing compared to grazing on the species richness, abundance and functional diversity of arthropods in three grassland complexes in Hungary. Since 2005, these salt grasslands have been divided into two management units: extensive grazing management has been continued in one part, while annual late cutting has been established in the other part. In each management unit five sites were sampled. Spiders and ground beetles were sampled using pitfall traps, orthopterans and true bugs were sampled using sweep nets twice before cutting in 2015. In total, the data relating to 12,576 adult individuals of 334 species were analysed using mixed-models. Plant-dwelling true bugs and orthopterans responded more sensitively to mowing than ground-dwelling spiders and ground beetles. Beside the general negative effect of mowing on the species richness and abundance of plant-dwelling arthropods, the shifts in the community weighted mean values of these assemblages suggested the importance of the body size, trophic behaviour and dispersal ability of species in the functional response of these assemblages to the different management regimes. Ground beetles and spiders were rather influenced by the differences in the moisture conditions and vegetation properties. Presumably, strong abiotic stressors such as drought can partly override management effects on ground-dwelling arthropods. The effect of uniform and simultaneous biomass removal on large areas, and the direct mortality caused by mowing was the most disadvantageous for plant-dwelling arthropods. Based on our results, traditional management practices should be prioritized in grassland conservation, as alternative management practices might be less effective in preserving grassland biodiversity.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Functional diversity Management Ground beetles Orthopterans Pannonian salt grasslands Spiders Trait True bugs
Megjelenés:	Agriculture Ecosystems & Environment. - 273 (2019), p. 70-79. -
További szerzők:	Császár Péter Bozsó Miklós Deák Balázs (1978-) (biológus) Valkó Orsolya (1985-) (biológus) Kiss Orsolya Gallé Róbert
Pályázati támogatás:	NKFI KH 126476 Egyéb
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001-es BibID:	BIBFORM067703
Első szerző:	Török Péter (biológus-ökológus)
Cím:	Managing for species composition or diversity? Pastoral and free grazing systems in alkali steppes / Török Péter, Valkó Orsolya, Deák Balázs, Kelemen András, Tóth Edina, Tóthmérész Béla
Dátum:	2016
ISSN:	0167-8809 1873-2305
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
Megjelenés:	Agriculture, Ecosystems and Environment. - 234 (2016), p. 23-30. -
További szerzők:	Valkó Orsolya (1985-) (biológus) Deák Balázs (1978-) (biológus) Kelemen András (1986-) (biológus-ökológus) Tóth Edina (1990-) (biológus) Tóthmérész Béla (1960-) (ökológus)
Pályázati támogatás:	OTKA-100192 OTKA OTKA-111807 OTKA SROP-4.2.2.B-15/1/KONV2015-0001 Egyéb TÁMOP 4.2.1/B-09/1/KONV-2010-0007 TÁMOP TÁMOP 4.2.2/B-10/1-2010-0024 TÁMOP
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001-es BibID:	BIBFORM081244
Első szerző:	Tälle, Malin
Cím:	Grazing vs. mowing : a meta-analysis of biodiversity benefits for grassland management / Malin Tälle, Balázs Deák, Peter Poschlod, Orsolya Valkó, Lars Westerberg, Per Milberg
Dátum:	2016
ISSN:	0167-8809
Megjegyzések:	To maintain the high biodiversity of semi-natural grasslands, management by grazing or mowing is needed. Given the limited resources and few remaining areas, the best management method should be used. However, only a few studies comparing the effects of mowing and grazing on grassland biodiversity exists. Therefore, the goal of the present review was to extract as much data as possible from the literature and evaluate them using a meta-analysis approach. We searched scientific and grey literature for studies comparing the effects of grazing and annual mowing on outcomes relevant for biodiversity conservation. We identified 35 relevant studies on grazing and annual mowing that provided data suitable for the meta-analysis. We found that grazing generally had a more positive effect on the conservation value of semi-natural grasslands compared to mowing, but effect sizes were generally small to moderate for most contrasts. Furthermore, effects varied across some grassland characteristics e.g. for different grassland types, with grazing and mowing having a similar effect or mowing having a more positive effect in certain cases. Our results suggest, that in most cases grazing should be the preferred management method when managing for grassland conservation.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk Conservation management Cutting Evidence-based Livestock grazing Meadow Pasture Semi-natural grassland
Megjelenés:	Agriculture Ecosystems & Environment. - 222 (2016), p. 200-212. -
További szerzők:	Deák Balázs (1978-) (biológus) Poschlod, Peter Valkó Orsolya (1985-) (biológus) Westerberg, Lars Milberg, Per
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001-es BibID:	BIBFORM057908
Első szerző:	Valkó Orsolya (biológus)
Cím:	Environmental factors driving seed bank diversity in alkali grasslands / Orsolya Valkó, Béla Tóthmérész, András Kelemen, Edina Simon, Tamás Miglécz, Balázs András Lukács, Péter Török
Dátum:	2014
ISSN:	0167-8809
Megjegyzések:	For an effective conservation and management in grasslands it is essential to understand mechanismssustaining biodiversity. To gain knowledge is especially crucial in stressed grasslands harbouring a uniqueflora and fauna, like alkali grasslands. Aboveground vegetation, seed bank and environmental factors werestudied in three stands of the following alkali grassland types: (i) Artemisia dry alkali grasslands at highestelevations; (ii) Puccinellia high and (iii) Puccinellia low grasslands at medium to low elevations, and (iv)Juncus wet alkali grasslands at the lowest elevations. We tested the following hypotheses: (i) Seed bankspecies diversity and density are the highest in the most stressed grassland types, where regeneration byseeds could have a major importance in sustaining vegetation diversity. (ii) Seed bank density of hygrophytesincreases with decreasing elevation, because the cover of hygrophytes in the vegetation increaseswith decreasing elevation. The mean seed bank density ranged from 30,104 up to 51,410 seeds/m2, whichis higher than in most dry grasslands. Both the lowest seed bank density and diversity were detected inthe most stressed Puccinellia high grasslands; Spergularia salina was the only abundant seed bank species(possessing at least 1000 seeds/m2). These results not supported our first hypothesis. We detected thehighest seed densities of almost all hygrophyte species in the lowest-elevated Juncus grasslands. But,we did not find a significant monotonous correlation between elevation and the overall hygrophyteseed bank density; because most of the hygrophyte species were missing from the seed bank at themedium-elevated, but most saline Puccinellia grasslands. Thus, our results only partly supported the secondhypothesis. In total we detected more species in the seed bank than in the aboveground vegetationwhich emphasises that seed bank plays an important role in sustaining the diversity of alkali grasslands.However, characteristic graminoids possessed no considerable seed bank, except for Juncus compressus(up to 38,619 seeds/m2). We can conclude that persistence and establishment of most alkali grasslandspecies are not supported by the local persistent seed bank.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban Elevation Salt marsh Salinity Seed density Seedling emergence Dispersal Doktori iskola Egészség- és Környezettudomány
Megjelenés:	Agriculture Ecosystems & Environment. - 182 (2014), p. 80-87. -
További szerzők:	Tóthmérész Béla (1960-) (ökológus) Kelemen András (1986-) (biológus-ökológus) Simon Edina (1981-) (ökológus) Miglécz Tamás (1986-) (biológus ökológus) Lukács Balázs András (1979-) (ökológus) Török Péter (1979-) (biológus-ökológus)
Pályázati támogatás:	TÁMOP-4.2.2/B-10/1-2010-0024 TÁMOP Juhász-Nagy Pál Doktori Iskola TÁMOP-4.2.1/B-09/1/KONV-2010-0007 TÁMOP Kvantitatív ökológiai kutatások TÁMOP-4.2.4.A/2-11-1-2012-0001 TÁMOP PD 100 192 OTKA
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