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001-es BibID:	BIBFORM104022
Első szerző:	Erdős László
Cím:	Where forests meet grasslands: Forest-steppes in Eurasia / László Erdős, Didem Ambarli, Oleg A. Anenkhonov, Zoltán Bátori, Dániel Cserhalmi, Márton Kiss, György Kröel-Dulay, Hongyan Liu, Martin Magnes, Zsolt Molnár, Alireza Naqinezhad, Yury A. Semenishchenkov, Csaba Tölgyesi, Péter Török
Dátum:	2019
ISSN:	2627-9827
Megjegyzések:	Despite the ecological, economic and conservation importance of forest-steppes, a continental scale synthesis of this complex ecosystem has been lacking. In a recent review, we compiled scattered knowledge about Eurasian forest-steppes in a new synthesis, proposed a new forest-steppe definition, reviewed how the biogeographic position of this ecosystem is perceived by different authors from different regions, delineated the main regions based on criteria of flora, physiognomy (i.e., vegetation structure), relief, and climate, and explored the conservation importance of forest-steppes. Here we complement some of the key findings of the review and illustrate some topics with further specific examples.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk complexity forest-steppe heterogeneity meadow steppe vegetation mosaic wooded-steppe
Megjelenés:	Palaearctic Grasslands. - 1 : 40 (2019), p. 22-26. -
További szerzők:	Ambarli, Didem Anenkhonov, Oleg A. Bátori Zoltán Cserhalmi Dániel (1981-) (környezetgazdálkodási agrármérnök) Kiss Márton Kröel-Dulay György (ökológus) Liu, Hongyan (ökológus) Magnes, Martin Molnár Zsolt Naqinezhad, Alireza (botanikus) Semenishchenkov, Yury A. Tölgyesi Csaba (1984-) (ökológus) Török Péter (1979-) (biológus-ökológus)
Pályázati támogatás:	K-119225 OTKA
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001-es BibID:	BIBFORM078022
Első szerző:	Erdős László
Cím:	The edge of two worlds : a new review and synthesis on Eurasian forest-steppes / László Erdős, Didem Ambarli, Oleg A. Anenkhonov, Zoltán Bátori, Dániel Cserhalmi, Márton Kiss, György Kröel-Dulay, Hongyan Liu, Martin Magnes, Zsolt Molnár, Alireza Naqinezhad, Yury A. Semenishchenkov, Csaba Tölgyesi, Péter Török
Dátum:	2018
ISSN:	1402-2001 1654-109X
Megjegyzések:	Aims: Eurasian forest-steppes are among the most complex non-tropical terrestrial ecosystems. Despite their considerable scientific, ecological and economic importance, knowledge of forest-steppes is limited, particularly at the continental scale. Here we provide an overview of Eurasian forest-steppes across the entire zone: (a) we propose an up-to-date definition of forest-steppes, (b) give a short physiogeographic outline, (c) delineate and briefly characterize the main forest-steppe regions, (d) explore forest-steppe biodiversity and conservation status, and (e) outline foreststeppe prospects under predicted climate change. Location: Eurasia (29°-56°N, 16°-139°E). Results and Conclusions: Forest-steppes are natural or near-natural vegetation complexes of arboreal and herbaceous components (typically distributed in a mosaic pattern) in the temperate zone, where the co-existence of forest and grassland is enabled primarily by the semi-humid to semi-arid climate, complemented by complex interactions of biotic and abiotic factors operating at multiple scales. This new definition includes lowland forest?grassland macromosaics (e.g. in Eastern Europe), exposurerelated mountain forest-steppes (e.g. in Inner Asia), fine-scale forest?grassland mosaics (e.g. in the Carpathian Basin) and open woodlands (e.g. in the Middle East). Using criteria of flora, physiognomy, relief and climate, nine main forest-steppe regions are identified and characterized. Forest-steppes are not simple two-phase systems, as they show a high level of habitat diversity, with forest and grassland patches of varying types and sizes, connected by a network of differently oriented edges. Species diversity and functional diversity may also be exceptionally high in foreststeppes. Regarding conservation, we conclude that major knowledge gaps exist in determining priorities at the continental, regional, national and local levels, and in identifying clear target states and optimal management strategies. When combined with other threats, climate change may be particularly dangerous to forest-steppe survival, possibly resulting in compositional changes, rearrangement of the landscape mosaic or even the latitudinal or altitudinal shift of forest-steppes.
Tárgyszavak:	Természettudományok Biológiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban habitat complexity landscape heterogeneity meadow steppe prairie semi-arid vegetation steppe vegetation mosaic wooded-steppe woodland
Megjelenés:	Applied Vegetation Science. - 21 : 3 (2018), p. 345-362. -
További szerzők:	Ambarli, Didem Anenkhonov, Oleg A. Bátori Zoltán Cserhalmi Dániel (1981-) (környezetgazdálkodási agrármérnök) Kiss Márton (ökológus) Kröel-Dulay György (ökológus) Liu, Hongyan (ökológus) Magnes, Martin Molnár Zsolt (botanikus) Naqinezhad, Alireza (botanikus) Semenishchenkov, Yury A. Tölgyesi Csaba (1984-) (ökológus) Török Péter (1979-) (biológus-ökológus)
Pályázati támogatás:	PD 116114 OTKA K 119225 OTKA EFOP-3.6.1-16-2016-00014 EFOP NTP-NFTÖ-16-0623 egyéb NKFIH K 124796 egyéb NKFIH K 119225 egyéb
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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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001-es BibID:	BIBFORM104967
035-os BibID:	(cikkazonosító)e3725 (WOS)000800746600001 (SCopus)85130713920
Cím:	Environmental drivers and spatial scaling of species abundance distributions in Palaearctic grassland vegetation / Werner Ulrich, Thomas J. Matthews, Idoia Biurrun, Juan Antonio Campos, Patryk Czortek, Iwona Dembicz, Franz Essl, Goffredo Filibeck, Gian-Pietro Giusso del Galdo; Behlül Güler, Alireza Naqinezhad, Péter Török, Jürgen Dengler
Dátum:	2022
ISSN:	0012-9658 1939-9170
Megjegyzések:	Species abundance distributions (SADs) link species richness with species abundances and are an important tool in the quantitative analysis of ecological communities. Niche-based and sample-based SAD models predict different spatial scaling properties of SAD parameters. However, empirical research on SAD scaling properties is largely missing. Here we extracted percentage cover values of all occurring vascular plants as proxies of their abundance in 1725 10-m(2) plots from the GrassPlot database, covering 47 regional data sets of 19 different grasslands and other open vegetation types of the Palaearctic biogeographic realm. For each plot, we fitted the Weibull distribution, a model that is able to effectively mimic other distributions like the log-series and lognormal, to the species-log abundance rank order distribution. We calculated the skewness and kurtosis of the empirical distributions and linked these moments, along with the shape and scale parameters of the Weibull distribution, to plot climatic and soil characteristics. The Weibull distribution provided excellent fits to grassland plant communities and identified four basic types of communities characterized by different degrees of dominance. Shape and scale parameter values of local communities on poorer soils were largely in accordance with log-series distributions. Proportions of subdominant species tended to be lower than predicted by the standard lognormal SAD. Successive accumulation of plots of the same vegetation type yielded nonlinear spatial scaling of SAD moments and Weibull parameters. This scaling was largely independent of environmental correlates and geographic plot position. Our findings caution against simple generalizations about the mechanisms that generate SADs. We argue that in grasslands, lognormal-type SADs tend to prevail within a wider range of environmental conditions, including more extreme habitats such as arid environments. In contrast, log-series distributions are mainly restricted to comparatively species-rich communities on humid and fertile soils.
Tárgyszavak:	Természettudományok Környezettudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk lognormal distribution log-series distribution Palaearctic grassland plant cover spatial scaling species abundance Weibull distribution
Megjelenés:	Ecology. - 103 : 8 (2022), p. 1-16. -
További szerzők:	Ulrich, Werner Matthews, Thomas J. Biurrun, Idoia Campos, Juan Antonio Czortek, Patryk Dembicz, Iwona Essl, Franz Filibeck, Goffredo del Galdo, Gian-Pietro Giusso Güler, Behlül Naqinezhad, Alireza (botanikus) Török Péter (1979-) (biológus-ökológus) Dengler, Jürgen
Pályázati támogatás:	NKFIH-K-119225 Egyéb NKFIH-K-137573 Egyéb
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