Fine-grain beta diversity of Palaearctic grassland vegetation

Uǧurlu, Emin; Dembicz I.; Dengler J.; Steinbauer M.J.; Matthews T.J.

Fine-grain beta diversity of Palaearctic grassland vegetation

dc.authorid	0000-0003-0824-1426	en_US
dc.authorscopusid	24170041700	en_US
dc.contributor.author	Uǧurlu, Emin
dc.contributor.author	Dembicz I.
dc.contributor.author	Dengler J.
dc.contributor.author	Steinbauer M.J.
dc.contributor.author	Matthews T.J.
dc.date.accessioned	2022-04-01T08:36:32Z
dc.date.available	2022-04-01T08:36:32Z
dc.date.issued	2021	en_US
dc.department	BTÜ, Orman Fakültesi, Orman Mühendisliği Bölümü	en_US
dc.description.abstract	Questions: Which environmental factors influence fine-grain beta diversity of vegetation and do they vary among taxonomic groups?. Location: Palaearctic biogeographic realm. Methods: We extracted 4,654 nested-plot series with at least four different grain sizes between 0.0001 m² and 1,024 m² from the GrassPlot database, covering a wide range of different grassland and other open habitat types. We derived extensive environmental and structural information for these series. For each series and four taxonomic groups (vascular plants, bryophytes, lichens, all), we calculated the slope parameter (z-value) of the power law species–area relationship (SAR), as a beta diversity measure. We tested whether z-values differed among taxonomic groups and with respect to biogeographic gradients (latitude, elevation, macroclimate), ecological (site) characteristics (several stress–productivity, disturbance and heterogeneity measures, including land use) and alpha diversity (c-value of the power law SAR). Results: Mean z-values were highest for lichens, intermediate for vascular plants and lowest for bryophytes. Bivariate regressions of z-values against environmental variables had rather low predictive power (mean R² = 0.07 for vascular plants, less for other taxa). For vascular plants, the strongest predictors of z-values were herb layer cover (negative), elevation (positive), rock and stone cover (positive) and the c-value (U-shaped). All tested metrics related to land use (fertilization, livestock grazing, mowing, burning, decrease in naturalness) led to a decrease in z-values. Other predictors had little or no impact on z-values. The patterns for bryophytes, lichens and all taxa combined were similar but weaker than those for vascular plants. Conclusions: We conclude that productivity has negative and heterogeneity positive effects on z-values, while the effect of disturbance varies depending on type and intensity. These patterns and the differences among taxonomic groups can be explained via the effects of these drivers on the mean occupancy of species, which is mathematically linked to beta diversity.	en_US
dc.identifier.doi	10.1111/jvs.13045	en_US
dc.identifier.issn	11009233
dc.identifier.issue	3	en_US
dc.identifier.scopusquality	N/A	en_US
dc.identifier.uri	https://hdl.handle.net/20.500.12885/1825
dc.identifier.volume	32	en_US
dc.identifier.wosquality	N/A	en_US
dc.indekslendigikaynak	Web of Science	en_US
dc.indekslendigikaynak	Scopus	en_US
dc.institutionauthor	Uǧurlu, Emin
dc.language.iso	en	en_US
dc.publisher	John Wiley and Sons Inc	en_US
dc.relation.ispartof	Journal of Vegetation Science	en_US
dc.relation.publicationcategory	Makale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı	en_US
dc.rights	info:eu-repo/semantics/openAccess	en_US
dc.subject	disturbance	en_US
dc.subject	elevation	en_US
dc.subject	fine-grain beta diversity	en_US
dc.subject	heterogeneity	en_US
dc.subject	land use	en_US
dc.subject	macroecology	en_US
dc.subject	mean occupancy	en_US
dc.subject	Palaearctic grassland	en_US
dc.subject	productivity	en_US
dc.subject	scale dependence	en_US
dc.subject	species–area relationship (SAR)	en_US
dc.subject	z-value	en_US
dc.title	Fine-grain beta diversity of Palaearctic grassland vegetation	en_US
dc.type	Article	en_US