Találati lista | Tudóstér

001-es BibID:	BIBFORM086172
Első szerző:	Deák Balázs (biológus)
Cím:	Legacies of past land use challenge grassland recovery : An example from dry grasslands on ancient burial mounds / Balázs Deák, Orsolya Valkó, Csaba Albert Tóth, Ágnes Botos, Tibor József Novák
Dátum:	2020
ISSN:	1314-6947 1314-3301
Megjegyzések:	Due to large-scale agricultural intensification, grasslands are often restricted to habitat islands in humantransformed landscapes. There are approximately half a million ancient burial mounds built by nomadic steppic tribes in the Eurasian steppe and forest steppe zones, which act as habitat islands for dry grassland vegetation. Land use intensification, such as arable farming and afforestation by non-native woody species are amongst the major threats for Eurasian dry grasslands, including grasslands on mounds. After the launch of the Good Agricultural and Environmental Condition framework of the European Union, in Hungary there is a tendency for ceasing crop production and cutting non-native woody plantations, in order to conserve these unique landmarks and restore the historical grassland vegetation on the mounds. In this study, restoration prospects of dry grassland habitats were studied on kurgans formerly covered by croplands and Robinia pseudoacacia plantations. Soil and vegetation characteristics were studied in the spontaneously recovering grasslands. The following questions were addressed: 1; How does site history affect the spontaneous grassland recovery? 2; Do residual soil nutrients play a role in grassland recovery? In former croplands, excess phosphorus, while in former Robinia plantations, excess nitrogen was present in the soil even four years after the land use change and grassland vegetation was in an early or midsuccessional stage both on the mounds. The results showed that, without proper management measures, recovery of grassland vegetation is slow on mounds formerly used as cropland or black locust plantation. However, restoration efforts, focused on the restoration of mounds formerly covered by croplands, can be more effective compared to the restoration of mounds formerly covered by forest plantations.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk cropland kurgan nitrogen phosphorus Robinia pseudoacacia soil steppe grassland restoration
Megjelenés:	Nature Conservation-Bulgaria. - 2020 : 39 (2020), p. 113-132. -
További szerzők:	Valkó Orsolya (1985-) (biológus) Tóth Csaba Albert (1971-) (geográfus) Botos Ágnes (1990-) (természetvédelmi mérnök) Novák Tibor (1973-) (geográfus)
Pályázati támogatás:	NKFI KH 130338 Egyéb NKFI KH 126476 Egyéb NKFI FK 124404 Egyéb NKFIH-1150-6/2019 Egyéb ÚNKP-19-4-DE-129 Egyéb
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM083298
Első szerző:	Török Péter (biológus-ökológus)
Cím:	Recovery of native grass biodiversity by sowing on former croplands : is weed suppression a feasible goal for grassland restoration? / Péter Török, Tamás Miglécz, Orsolya Valkó, András Kelemen, Balázs Deák, Szabolcs Lengyel, Béla Tóthmérész
Dátum:	2012
ISSN:	1617-1381
Megjegyzések:	Grassland restoration on former croplands offers good opportunity to mitigate the loss of grassland biodiversity. Weed suppression can be another benefit, which becomes increasingly important because of the high recent rate of abandonment of arable lands in Central and Eastern Europe. Our aim was to evaluate the usefulness of sowing two low-diversity seed mixtures followed by annual mowing, a frequently used restoration technique, in weed suppression. We found that rapidly forming cover of sown grasses effectively suppressed short-lived weeds and their germination except in the first year. The detected dense seed bank of short-lived weeds points out the possibility and threat of later weed infestation. In the short run perennial weeds cannot be suppressed easily by sowing and annual mowing. We found that the effectiveness of seed sowing followed by mowing in weed suppression can be different on sites with different history or seed mixture. Rapidly establishing perennial weeds, such as Agropyron species were only detected in former alfalfa fields; Cirsium arvense was found in former cereal and sunflower fields but not in former alfalfa fields. We found that the rate of weed suppression and success was influenced by the seed mixtures used. In several alkali restorations the high proportion of perennial weeds was detected in year 3. In loess restorations, much lower scores were typical. This was likely caused by the different seed mixture used. The loess seed mixture contained seeds of a clonally spreading tall-grass, Bromus inermis, which could compete more effectively with clonally spreading weeds, than could short grass species with or without tussock forming. Our findings indicate that post-restoration management require carefully designed actions that are fine-tuned addressing specific threats at the site level.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk
Megjelenés:	Journal for Nature Conservation. - 20 : 1 (2012), p. 41-48. -
További szerzők:	Miglécz Tamás (1986-) (biológus ökológus) Valkó Orsolya (1985-) (biológus) Kelemen András (1986-) (biológus-ökológus) Deák Balázs (1978-) (biológus) Lengyel Szabolcs (1971-) (biológus) Tóthmérész Béla (1960-) (ökológus)
Pályázati támogatás:	LIFE04NAT/HU/000119 egyéb OTKA NN F78887 OTKA TÁMOP 4.2.1./B-09/1/KONV-2010-0007 TÁMOP
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM071721
Első szerző:	Valkó Orsolya (biológus)
Cím:	Cultural heritage and biodiversity conservation - plant introduction and practical restoration on ancient burial mounds / Valkó Orsolya, Tóth Katalin, Kelemen András, Miglécz Tamás, Radócz Szilvia, Sonkoly Judit, Tóthmérész Béla, Török Péter, Deák Balázs
Dátum:	2018
ISSN:	1314-6947 1314-3301
Megjegyzések:	Linking the conservation of cultural heritage and natural values provides a unique opportunity for preserving traditional landscapes and receives an increased awareness from stakeholders and society. Ancientburial mounds are proper objects of such projects as they are iconic landscape elements of the Eurasiansteppes and often act as refugia for grassland specialist species. The aim of this project was to reintroducegrassland plant species to burial mounds for representing them as cultural monuments with the associatedbiodiversity for the public. The effectiveness of seed sowing, transplanting greenhouse-grown plantsand individuals from threatened populations on burial mounds in Hortobágy National Park, Hungarywas tested. The following questions were answered: (1) which method is the most effective for speciesintroduction? (2) which species can establish most successfully? (3) how does management affect thespecies establishment rates? It was found advisable to use a combination of seed sowing and transplantinggreenhouse-grown plants. Sowing was found as a cost-effective method for introducing large-seededspecies, whilst introduction of greenhouse-grown transplants warranted higher establishment rates for alarger set of species. Transplanting adult individuals was more reliable regardless of management regimes,however this method is labour-intensive and expensive. Intensive management, like mowing with heavymachinery and intensive grazing, should be avoided in the first few years after introduction. The authors highlighted the fact that introducing characteristic grassland species on cultural monuments offers a greatopportunity to link issues of landscape and biodiversity conservation. This project demonstrated that, bythe revitalisation of cultural monuments, cultural ecosystem services can also be restored.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban cultural ecosystem services endangered species grassland restoration landscape conservation landscape element reintroduction
Megjelenés:	Nature Conservation. - 24 (2018), p. 65-80. -
További szerzők:	Tóth Katalin (1988-) (biológus) Kelemen András (1986-) (biológus-ökológus) Miglécz Tamás (1986-) (biológus ökológus) Radócz Szilvia (1988-) (biológus) Sonkoly Judit (1989-) (biológus) Tóthmérész Béla (1960-) (ökológus) Török Péter (1979-) (biológus-ökológus) Deák Balázs (1978-) (biológus)
Pályázati támogatás:	OTKA-111807 OTKA
Internet cím:	Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: