Találati lista | Tudóstér

001-es BibID:	BIBFORM084630
Első szerző:	Deák Balázs (biológus)
Cím:	Grassland fires in Hungary : experiences of nature conservationists on the effects of fire on biodiversity / Deák Balázs, Valkó Orsolya, Török Péter, Végvári Zsolt, Hartel Tibor, Schmotzer András, Kapocsi István, Tóthmérész Béla
Dátum:	2014
ISSN:	1589-1623 1785-0037
Megjegyzések:	Fire as a natural disturbance has been present in most European grasslands. Controlled burning was also an important component of the traditional landscape management for millennia. It was mainly used to reduce litter and woody vegetation and to maintain open landscapes suitable for farming. Due to socio-economical changes traditional and sustainable use of fire was ceased and replaced by arsons and technical fires in Europe. Despite its wide application in the past and the considerable extension and frequency of current grassland fires, the impact of fire on the grassland biodiversity is still scarcely documented in Europe. The aim of this study is to offer a perspective on the issue of fire impact on grasslands, by overviewing published information and practical experiences from Hungary. Our results suggest that fire can be detrimental for several taxa (e.g. insects or ground-dwelling birds), but can also promote population growth of several endangered species by reducing litter or by creating and maintaining open habitats. We also found that fire may be effective in controlling invasive plant species. The effect of fire on grassland biodiversity may be rather context-dependent. There is a critical need for developing robust evidences on the context-dependence of fire effect on biodiversity. For this, well designed prescribed burning experiments are crucial.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény hazai lapban folyóiratcikk wildfire prescribed burning nature conservation management invasive species grazing
Megjelenés:	Applied Ecology and Environmental Research. - 12 : 1 (2014), p. 267-283. -
További szerzők:	Valkó Orsolya (1985-) (biológus) Török Péter (1979-) (biológus-ökológus) Végvári Zsolt (1969-) (biológus) Hartel Tibor Schmotzer András Kapocsi István (1960-) Tóthmérész Béla (1960-) (ökológus)
Pályázati támogatás:	TÁMOP-4.2.4.A/2-11-1-2012-0001 TÁMOP TÁMOP-4.2.1/B-09/1/KONV-2010-0007 TÁMOP TÁMOP-4.2.2/B-10/1-2010-0024 TÁMOP TÁMOP-4.2.2/C-11/1/KONV-2012-0010 TÁMOP OTKA-PD-100192 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon:

001-es BibID:	BIBFORM081488
Első szerző:	Végvári Zsolt (biológus)
Cím:	Effects of Land Use and Wildfires on the Habitat Selection of Great Bustard (OTIS TARDA L.) : Implications for Species Conservation / Zsolt Végvári, Orsolya Valkó, Balázs Deák, Péter Török, Sándor Konyhás, Béla Tóthmérész
Dátum:	2016
ISSN:	1085-3278
Megjegyzések:	Increasing agricultural activities have been shown to affect soil and vegetation changes leading to serious biodiversity declines throughout the world. These effects are amplified in dry grassland areas, where resulting changes in habitat structure affect threatened animals on long temporal scales. Great bustards (Otis tarda) inhabit open landscapes where fire and grazing have been a part of the natural disturbance regime since historical times. Even fire and grazing are hypothesized to be important factors in the lifecycle of the species, studies are still missing on disturbance-related lekking distribution patterns of great bustards. We analyzed the importance of fires and grazing on the spatial distribution of lekking bustards controlling for habitat types, habitat diversity, distance from roads and social effects. Our standardized dataset spanned 31 years, being one of the largest datasets on bustard lekking. During the 31 years we observed 10 118 individuals at 639 observation points in Hortobágy National Park, East-Hungary. One of the most important predictors for total number of birds and number of males was the area burnt in previous years. We found that increased habitat diversity had a positive effect on female numbers. Models fit on second- and third-year burn data detected no substantial role of burning on lekking distribution. Our results suggest that introduction of a patch-burning management system in lekking areas could increase the availability of optimal lek sites for bustards. As an effective management tool, we suggest applying patch-burning annually in a spatially mosaic structure inside the area occupied by each sub-population unit.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk habitat management fire grazing spatial analyses steppe
Megjelenés:	Land Degradation & Development. - 27 : 4 (2016), p. 910-918. -
További szerzők:	Valkó Orsolya (1985-) (biológus) Deák Balázs (1978-) (biológus) Török Péter (1979-) (biológus-ökológus) Konyhás Sándor Tóthmérész Béla (1960-) (ökológus)
Pályázati támogatás:	SROP-4.2.2.B-15/1/KONV-2015-0001 Egyéb OTKA K 116639 OTKA OTKA PD 115627 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Saját polcon: