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001-es BibID:	BIBFORM058350
Első szerző:	Albert Ágnes Júlia (ökológus)
Cím:	Secondary succession in sandy old-fields : a promising example of spontaneous grassland recovery / Ágnes-Júlia Albert, András Kelemen, Orsolya Valkó, Tamás Miglécz, Anikó Csecserits, Tamás Rédei, Balázs Deák, Béla Tóthmérész, Péter Török
Dátum:	2014
ISSN:	1402-2001
Megjegyzések:	Question: Based on the spontaneous vegetation development of old-fields in the Nyírség and Kiskunság sand regions (Hungary), we aimed to answer the following questions using the chronosequence method: (1) how do the proportionsof different functional groups change during succession; (2) which target species establish successfully in the old-fields during the course of succession; and (3)how successful is spontaneous succession in the recovery of target grasslands-Location: Two sand regions of the Great Hungarian Plain: (1) the Nyírség sand region (East Hungary, acidic sand, moderately continental climate) and the Kiskunság (Central Hungary, calcareous sand, continental climate).Methods: Altogether 24 old-fieldswere classified into young (<10-yr-old),middle-aged (10-20-yr-old) and late-succession (20-40-yr-old) old-fields; four fields in each age category. For baseline vegetation reference, three open and three closed sand grassland stands in both regions were sampled in the vicinity of the old-fields. The percentage cover of vascular plants was recorded in five 2 X 2-mplots in each field, in early May and late June 2012. We used life forms, clonal spreading traits and Ellenberg indicator values for nutrients in the analysis. Speciesof Festuco-Brometea class were considered as target species.Results: The cover of hemicryptophytes and geophytes increased, the cover of short-lived species decreased with time. Cover of species without clonal spreadingability decreased, while cover of species with clonal spreading ability increased with increasing field age. The cover of invasive species decreased with increasing field age. The majority of target species had established already in the young and middle-aged old-fields, although their cover was significantly higher in the two older age groups.Conclusion: Spontaneous succession can be a vital option in recovery of sand grassland vegetation in Central Europe; the majority of the species pool of sandy grasslands can be recovered in the first 10-20 yrs. However, the success of grassland recovery can be strongly influenced by the surrounding species pool and can be slow if seed dispersal is limited. Spontaneous succession is most promising when the target species of grasslands immigrate at the very beginning of the succession, within the first few years.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban abandonment acidic sand calcareous sand clonal traits grassland restoration invasion spontaneous succession
Megjelenés:	Applied Vegetation Science. - 17 : 2 (2014), p. 214-224. -
További szerzők:	Kelemen András (1986-) (biológus-ökológus) Valkó Orsolya (1985-) (biológus) Miglécz Tamás (1986-) (biológus ökológus) Csecserits Anikó Rédei Tamás Deák Balázs (1978-) (biológus) Tóthmérész Béla (1960-) (ökológus) Török Péter (1979-) (biológus-ökológus)
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001-es BibID:	BIBFORM111148
035-os BibID:	(WoS)000989305400001 (Scopus)85169077821
Első szerző:	Kovacsics-Vári Gergely (biológus)
Cím:	Intensity-dependent effects of cattle and sheep grazing in sand grasslands - Does livestock type really matter? / Gergely Kovacsics-Vári, Judit Sonkoly, Katalin Tóth, Andrea McIntosh-Buday, Patricia Diaz Cando, Viktória Törő-Szíjgyártó, Nóra Balogh, Luis Roberto Guallichico Suntaxi, Francis David Espinoza-Ami, László Demeter, Béla Tóthmérész, Péter Török
Dátum:	2023
ISSN:	1402-2001 1654-109X
Megjegyzések:	Aims: By analysing cattle and sheep grazed sand grasslands we tested the following hypotheses: (i) Livestock type has a stronger effect on the vegetation characteristics than grazing intensity. (ii) Sheep grazing results in lower biomass and species and functional diversity than cattle grazing, regardless to intensity. (iii) Increased grazing intensity causes a shift of the trait composition in grasslands. Location: Sand grasslands in the Nyírség region, East Hungary. Methods: We selected 26 sand grassland sites grazed by cattle or sheep, and classified them into four intensity levels. Vegetation composition was surveyed in 2 m x 2 m plots. We harvested the aboveground biomass from 20 cm x 20 cm plots; then dried and sorted it to live biomass, litter, moss, and lichen. We compared Rao dissimilarity index, species richness, Shannon diversity, evenness, and the community weighted means of nine vegetative and generative traits along a grazing intensity gradient. We calculated functional richness, evenness, and divergence for comparison. Results: We found that some diversity metrics and community weighted means of most studied traits were significantly affected by grazing intensity. Several characteristics were also affected by the interaction of grazing intensity and livestock type, but none of the studied characteristics were affected by livestock type in itself. Increasing Rao dissimilarity index peaking at the fourth grazing intensity level was detected, but for other multi-trait indices no such changes were proven, except for functional divergence, which was the lowest at the first intensity level. Graminoid, forb, and litter biomass were significantly affected by intensity, but none of the biomass fractions were affected by livestock type. Conclusions: We suggest that for the management of sand grasslands, grazing intensity should be carefully adjusted considering not only livestock units per hectare. For practical recommendations well-defined, long-term experiments studying different livestock and habitat types along an intensity gradient would be essential
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk grazing intensity grazing cattle grazing sheep grazing steppe pasture sand grassland plant traits biomass
Megjelenés:	Applied Vegetation Science. - 26 : 2 (2023), p. 1-14.
További szerzők:	Sonkoly Judit (1989-) (biológus) Tóth Katalin Buday Andrea Díaz Cando, Patricia Elizabeth Törő-Szijgyártó Viktória Balogh Nóra Suntaxi Guallichico, Roberto Luis Espinoza-Ami, Francis David Demeter László Tóthmérész Béla (1960-) (ökológus) Török Péter (1979-) (biológus-ökológus)
Pályázati támogatás:	PD 137747 Egyéb K 119225 Egyéb K 137573 Egyéb KKP 144068 Egyéb
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001-es BibID:	BIBFORM092265
035-os BibID:	(WoS)000508638700001 (Scopus)85078658886
Első szerző:	Teleki Balázs (1980-)
Cím:	High resistance of plant biodiversity to moderate native woody encroachment in loess steppe grassland fragments / Teleki Balázs, Sonkoly Judit, Erdős László, Tóthmérész Béla, Prommer Mátyás, Török Péter
Dátum:	2020
ISSN:	1402-2001 1654-109X
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Applied Vegetation Science. - 23 : 2 (2020), p. 175-184. -
További szerzők:	Sonkoly Judit (1989-) (biológus) Erdős László Tóthmérész Béla (1960-) (ökológus) Prommer Mátyás Török Péter (1979-) (biológus-ökológus)
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