CCL

Összesen 2 találat.
#/oldal:
Részletezés:
Rendezés:

1.

001-es BibID:BIBFORM081441
Első szerző:Deák Balázs (biológus)
Cím:Micro-topographic heterogeneity increases plant diversity in old stages of restored grasslands / Balázs Deák, Orsolya Valkó, Péter Török, András Kelemen, Tamás Miglécz, Szilárd Szabó, Gergely Szabó, Béla Tóthmérész
Dátum:2015
ISSN:1439-1791
Megjegyzések:It is a truism in ecology that environmental heterogeneity increases diversity. Supporting field studies are mostly concerned with a large-scale topographic heterogeneity, ranging from a couple of metres to landscape-scale gradients. To test the role of fine-scale micro-topography on plant diversity, we studied the initial vegetation of recently filled (1-year-old), and established vegetation on old (7-year-old) soil-filled channels in an alkali landscape, East-Hungary. We hypothesised that (i) recently filled channels are characterised by a high cover of ruderal species and high species diversity and (ii) high micro-topographic heterogeneity increases the diversity of species and plant strategy types (mixed C-S-R categories) in early stages but later on this effect diminishes. We found that diversity of species and plant strategy types was higher in recently filled channels compared to old filled channels. Micro-topographic heterogeneity had no effect on the studied vegetation parameters in recently filled channels. Conversely, in old filled channels higher micro-topographic heterogeneity resulted in higher diversity and lower cover of the dominant grass Festuca pseudovina. Higher micro-topographic heterogeneity resulted in increased ruderality and decreased stress-tolerance, but it did not increase the diversity of plant strategy types. In contrast with former studies, we found that a couple of centimetres of micro-topographic heterogeneity had no effect on vegetation in recently filled channels, but supported a high diversity in old filled channels. An important practical implication of our study is that in grassland restoration projects, micro-topographic heterogeneity has a crucial role in sustaining biodiversity.
Tárgyszavak:Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Alkali landscape
C-S-R strategies
Elevation
Functional diversity
Grassland restoration
Plant trait
Soil disturbance
Succession
Topography
Megjelenés:Basic And Applied Ecology. - 16 : 4 (2015), p. 291-299. -
További szerzők:Valkó Orsolya (1985-) (biológus) Török Péter (1979-) (biológus-ökológus) Kelemen András (1986-) (biológus-ökológus) Miglécz Tamás (1986-) (biológus ökológus) Szabó Szilárd (1974-) (geográfus) Szabó Gergely (1975-) (geográfus) 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
OTKA PD 111807
OTKA
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

2.

001-es BibID:BIBFORM051667
Első szerző:Valkó Orsolya (biológus)
Cím:Review: Prospects and limitations of prescribed burning as a management tool in European grasslands / Valkó Orsolya, Török Péter, Deák Balázs, Tóthmérész, Béla
Dátum:2013
ISSN:1439-1791
Megjegyzések:Grassland managers and scientists are increasingly interested in cost-effective alternative ways of grassland biodiversityconservation. Prescribed burning is a promising management tool which should be integrated in the planning of managementefforts. In addition, small-scale prescribed burning is an effective fire suppression strategy to decrease the serious negativeimpacts of uncontrolled burnings on ecosystems and human life. Prescribed burning forms an integral part of the North-American grassland management practice, while in Europe it is rarely applied, despite the fact that uncontrolled burning occursfrequently in some regions. Our goal was to evaluate the use of prescribed burning as a promising but neglected managementtool in European grasslands. We found that European studies on prescribed burning of grasslands are scarce and we concludethat annual burning is usually not an appropriate option for the conservation of species-rich grasslands. We reviewed burningstudies from North-America to identify findings which might be adapted to the European grassland conservation strategy. InNorth-America, contrary to Europe, the application of burning is fine tuned in terms of frequency and timing, and usuallycombined with other restoration measures (grazing or seed sowing). Thus, we conclude that with the application of carefullydesigned prescribed burning, multiple conservation goals, e.g. invasion control and enhancing landscape-level heterogeneity, canbe linked with an effective fire suppression strategy. We emphasize that for the application of prescribed burning in Europe, thegeneral findings of carefully designed case studies should be combined with the practical knowledge of conservation managersconcerning the local application circumstances to reach specific management objectives.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
biomassza
ökoszisztéma szolgáltatások
tűz
legeltetés
kaszálás
préri
Megjelenés:Basic And Applied Ecology. - 15 : 1 (2013), p. 26-33. -
További szerzők:Török Péter (1979-) (biológus-ökológus) Deák Balázs (1978-) (biológus) Tóthmérész Béla (1960-) (ökológus)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Rekordok letöltése1