Publication type: Article in scientific journal
Type of review: Peer review (publication)
Title: Scale dependence of species–area relationships is widespread but generally weak in Palaearctic grasslands
Authors: Zhang, Jinhui
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
Silva, Vasco
Šmerdová, Eva
Sonkoly, Judit
Stifter, Simon
Talebi, Amir
Török, Péter
White, Hannah
Wu, Jianshuang
Dengler, Jürgen
et. al: No
DOI: 10.1111/jvs.13044
Published in: Journal of Vegetation Science
Volume(Issue): 32
Issue: 3
Page(s): e13044
Issue Date: 2021
Publisher / Ed. Institution: Wiley
ISSN: 1100-9233
Language: English
Subjects: Beta diversity; Grassland; GrassPlot; Heterogeneity; Palaearctic; Power law; Rooted presence; Scale dependence; Shoot presence; Species–area relationship; Vegetation; Z-value
Subject (DDC): 333.7: Land, natural recreational areas
580: Plants (Botany)
Abstract: 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 m² to 1,024 m² 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 m². 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.
Fulltext version: Published version
License (according to publishing contract): Licence according to publishing contract
Departement: Life Sciences and Facility Management
Organisational Unit: Institute of Natural Resource Sciences (IUNR)
Appears in collections:Publikationen Life Sciences und Facility Management

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