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001-es BibID:BIBFORM104980
Első szerző:Dengler, Jürgen
Cím:The Eurasian Dry Grassland Group (EDGG) in 2019-2020 / Jürgen Dengler, Alla Aleksanyan, Didem Ambarli, Idoia Biurrun, Iwona Dembicz, Anna Kuzemko, Péter Török, Stephen Venn
Dátum:2021
ISSN:1581-4661 1854-9829
Megjegyzések:This report summarizes the activities and achievements of the Eurasian Dry Grassland Group (EDGG) from July 2019 to December 2020. During this period, Covid-19 allowed only one live event, the 14th EDGG Field Workshop to the alpine vegetation of Switzerland, organised ad hoc as a replacement for the cancelled Field Workshop in the Ukrainian steppes. The cancelled Eurasian Grassland Conference in Spain found a partial replacement in ?Talk Grasslands!", a series of online talks during winter 2020/2021. EDGG's own diamond open access periodical, Palaearctic Grasslands, is a novel combination of scientific journal, photo magazine and member newsletter. With five issues during the reporting time it contributed much to EDGG's attractiveness. EDGG edited four Special Features in international journals (Tuexenia, Hacquetia, Flora) and contributed 13 chapters on grasslands and shrublands of the Palaearctic biogeographic realm to the Encyclopedia of the world's biomes. EDGG's vegetation-plot database GrassPlot with multi-scale and multi-taxon diversity data of grasslands and other open habitats of the Palaearctic is now integrated into the EDGG website with the GrassPlot Diversity Explorer
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
biodiversity
conservation
Eurasian Dry Grassland Group (EDGG)
grassland
GrassPlot
Palaearctic Grasslands
vegetation-plot database
Megjelenés:Hacquetia. - 20 : 1 (2021), p. 171-176. -
További szerzők:Aleksanyan, Alla Ambarli, Didem Biurrun, Idoia Dembicz, Iwona Kuzemko, Anna Török Péter (1979-) (biológus-ökológus) Venn, Stephen
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2.

001-es BibID:BIBFORM104988
035-os BibID:(Scopus)85100302574
Első szerző:Török Péter (biológus-ökológus)
Cím:Grasslands of Eastern Europe / Péter Török, Iwona Dembicz, Zora Dajić-Stevanović, Anna Kuzemko
Dátum:2020
Megjegyzések:Grasslands cover around 282,000 km2, corresponding to 14.6% of the total area in the countries of Eastern Europe, here defined as East Europe, Eastern Central-Europe, and the non-Mediterranean part of the Balkan Peninsula. Primary (steppes, alpine grasslands, azonal and extrazonal grasslands) and secondary grasslands (created mostly by forest cuts) provide a wide range of ecosystem services, such as biomass production and food for grazing animals and other herbivores, carbon storage and sequestration, home for pollinators as well as for migratory and breeding birds, water infiltration, purification and storage, erosion prevention and recreation. Both primary and secondary grasslands in Eastern Europe harbor a rich flora and fauna, but they are threatened by area loss, the twin threats of intensification and abandonment, invasive species encroachment, and climate change. Large areas of grasslands in the lowland regions have been converted to croplands, and the remaining grassland fragments are in general degraded by intensified use. Intensified use and application of tillage, drainage, intercropping, high intensity grazing or the use of pesticides, mineral and organic fertilizers have a detrimental effect on flora and fauna. In contrast, low accessible areas in mountains, foothills or other marginal areas, the traditional grassland management is abandoned. To recover or improve grassland biodiversity, in many countries, the re-introduction of traditional management regimes by mowing or grazing have been suggested. In case of completely destroyed grasslands, restoration of grassland vegetation and diversity by spontaneous succession and/or technical reclamation are necessary. While in large-scale restoration programs successes were often reported, it was also noted by the authors that the success of restoration was strongly influenced by the availability of high-quality grasslands in the landscape, acting as donor sites or spontaneous sources of propagules. High quality grassland fragments act as hotspots of biodiversity in landscapes dominated by agriculture; thus, their preservation should be prioritized in conservation actions.
ISBN:978-0-12-816097-8
Tárgyszavak:Természettudományok Környezettudományok könyvfejezet
könyvrészlet
Megjelenés:Encyclopedia of the World's Biomes / ed. by Michael I. Goldstein, Dominick A. DellaSala. - p. 703-713. -
További szerzők:Dembicz, Iwona Dajić-Stevanović, Zora Kuzemko, Anna
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3.

001-es BibID:BIBFORM079314
Első szerző:Török Péter (biológus-ökológus)
Cím:Grasslands, their Threats and Management in Eastern Europe / Péter Török, Monika Janišová, Anna Kuzemko, Solvita Rūşiņa, Zora Dajić Stevanović
Dátum:2018
ISBN:978 149 879 626 2
Tárgyszavak:Természettudományok Környezettudományok könyvfejezet
Megjelenés:Grasslands of the world: diversity, management and conservation / Victor R. Squires, Jürgen Dengle, Limin Hua, Haiying Feng. - p. 64-88. -
További szerzők:Janišová, Monika Kuzemko, Anna Rūşiņa, Solvita Stevanović, Zora Dajić
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4.

001-es BibID:BIBFORM083274
Első szerző:Venn, Stephen
Cím:The Eurasian Dry Grassland Group (EDGG) in 2016-2017 / Stephen Venn, Didem Ambarli, Idoia Biurrun, Jürgen Dengler, Anna Kuzemko, Péter Török, Michael Vrahnakis
Dátum:2018
ISSN:1854-9829
Megjegyzések:This report summarizes the activities and achievements of the Eurasian Dry Grassland Group (EDGG) from mid-2016 through to the end of 2017. During this period, the 13th Eurasian Grassland Conference took place in Sighişoara, Romania, and the 14th conference was held in Riga, Latvia. The 10th EDGG Field Workshop on Biodiversity patterns across a precipitation gradient in the Central Apennine mountains was conducted in the Central Apennines, Italy, this time in addition to multi-scale sampling of vascular plants, bryophytes and lichens, also including one animal group (leaf hoppers). Apart from the quarterly issues of its own electronic journal (Bulletin of the Eurasian Dry Grassland Group), EDGG also finalised five grassland-related Special Features/Issues during the past 1.5 years in the following international journals: Applied Vegetation Science, Biodiversity and Conservation, Phytocoenologia, Tuexenia and Hacquetia. Beyond that, EDGG facilitated various national and supra-national vegetationplot databases of grasslands and established its own specialised database for standardised multi-scale plot data of Palaearctic grasslands (GrassPlot).
Tárgyszavak:Természettudományok Biológiai tudományok beszámoló
folyóiratcikk
Megjelenés:Hacquetia. - 17 : 1 (2018), p. 17-23. -
További szerzők:Ambarli, Didem Biurrun, Idoia Dengler, Jürgen Kuzemko, Anna Török Péter (1979-) (biológus-ökológus) Vrahnakis, Michael
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5.

001-es BibID:BIBFORM081408
Első szerző:Venn, Stephen
Cím:The Eurasian Dry Grassland Group (EDGG) in 2015-2016 / Stephen Venn, Didem Ambarli, Idoia Biurrun, Jürgen Dengler, Monika Janišová, Anna Kuzemko, Péter Török, Michael Vrahnakis
Dátum:2016
ISSN:1854-9829
Tárgyszavak:Természettudományok Földtudományok beszámoló
folyóiratcikk
Megjelenés:Hacquetia. - 15 : 2 (2016), p. 15-19. -
További szerzők:Ambarli, Didem Biurrun, Idoia Dengler, Jürgen Janišová, Monika Kuzemko, Anna Török Péter (1979-) (biológus-ökológus) Vrahnakis, Michael
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6.

001-es BibID:BIBFORM104983
035-os BibID:(cikkazonosító)e13044 (WOS)000666878600009 (Scopus)85109201038
Első szerző:Zhang, Jinghui
Cím:Scale dependence of species-area relationships is widespread but generally weak in Palaearctic grasslands / Jinghui Zhang, François Gillet, Sándor Bartha, Juha Mikael Alatalo, Idoia Biurrun, Iwona Dembicz, John-Arvid Grytnes, Renaud Jaunatre, Remigiusz Pielech, Koenraad Van Meerbeek, Denys Vynokurov, Stefan Widmer, Alla Aleksanyan, Kuber Prasad Bhatta, Juan Antonio Campos, Patryk Czortek, Jiri Dolezal, Franz Essl, Itziar García-Mijangos, Riccardo Guarino, Behlül Güler, Michal Hájek, Anna Kuzemko, Frank Yonghong Li, Swantje Löbel, Halime Moradi, Alireza Naqinezhad, Vasco Silva, Eva Šmerdová, Judit Sonkoly, Simon Stifter, Amir Talebi, Péter Török, Hannah White, Jianshuang Wu, Jürgen Dengler
Dátum:2021
ISSN:1100-9233 1654-1103
Megjegyzések:Questions Species-area relationships (SARs) are fundamental for understanding biodiversity patterns and are generally well described by a power law with a constant exponent z. However, z-values sometimes vary across spatial scales. We asked whether there is a general scale dependence of z-values at fine spatial grains and which potential drivers influence it. Location Palaearctic biogeographic realm. Methods We used 6,696 nested-plot series of vascular plants, bryophytes and lichens from the GrassPlot database with two or more grain sizes, ranging from 0.0001 m(2) to 1,024 m(2) and covering diverse open habitats. The plots were recorded with two widespread sampling approaches (rooted presence = species "rooting" inside the plot; shoot presence = species with aerial parts inside). Using Generalized Additive Models, we tested for scale dependence of z-values by evaluating if the z-values differ with gran size and tested for differences between the sampling approaches. The response shapes of z-values to grain were classified by fitting Generalized Linear Models with logit link to each series. We tested whether the grain size where the maximum z-value occurred is driven by taxonomic group, biogeographic or ecological variables. Results For rooted presence, we found a strong monotonous increase of z-values with grain sizes for all grain sizes below 1 m(2). For shoot presence, the scale dependence was much weaker, with hump-shaped curves prevailing. Among the environmental variables studied, latitude, vegetation type, naturalness and land use had strong effects, with z-values of secondary peaking at smaller grain sizes. Conclusions The overall weak scale dependence of z-values underlines that the power function generally is appropriate to describe SARs within the studied grain sizes in continuous open vegetation, if recorded with the shoot presence method. When clear peaks of z-values occur, this can be seen as an expression of granularity of species composition, partly driven by abiotic environment.
Tárgyszavak:Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
beta diversity
grassland
GrassPlot
Heterogeneity
Palaearctic
power law
rooted presence
scale dependence
shoot presence
species-area relationship
vegetation
z-value
Megjelenés:Journal of Vegetation Science. - 32 : 3 (2021), p. 1-14. -
További szerzők:Gillet, François Bartha Sándor Alatalo, Juha Mikael Biurrun, Idoia Dembicz, Iwona Grytnes, John-Arvid Jaunatre, Renaud Pielech, Remigiusz van Meerbeek, Koenraad Vynokurov, Denys Widmer, Stefan Aleksanyan, Alla Bhatta, Kuber Prasad Campos, Juan Antonio Czortek, Patryk Dolezal, Jiri Essl, Franz García-Mijangos, Itziar Guarino, Riccardo Güler, Behlül Hájek, Michal Kuzemko, Anna Li, Frank Yonghong Löbel, Swantje Moradi, Halime Naqinezhad, Alireza (botanikus) Silva, Vasco Šmerdová, Eva Sonkoly Judit (1989-) (biológus) Stifter, Simon Talebi, Amir Török Péter (1979-) (biológus-ökológus) White, Hannah J. Wu, Jianshuang Dengler, Jürgen
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