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Title: The relationship between niche breadth and range size of beech (Fagus) species worldwide
Author(s): Cai, Qiong
Welk, Erik
Ji, Chengjun
Fang, Wenjing
Sabatini, Francesco M.
Zhu, Jianxiao
Zhu, Jiangling
Tang, Zhiyao
Attorre, Fabio
Campos, Juan A.
Čarni, Andraž
Chytrý, Milan
Çoban, Süleyman
Dengler, Jürgen
Dolezal, Jiri
Field, Richard
Frink, József P.
Gholizadeh, Hamid
Indreica, Adrian
Jandt, Ute
Karger, Dirk N.
Lenoir, Jonathan
Peet, Robert K.
Pielech, Remigiusz
De Sanctis, Michele
Schrodt, Franziska
Svenning, Jens-Christian
Tang, Cindy Q.
Tsiripidis, Ioannis
Willner, Wolfgang
Yasuhiro, Kubota
Fang, Jingyun
Bruelheide, Helge
Issue Date: 2021
Type: Article
Language: English
Abstract: Aim: This work explores whether the commonly observed positive range size–niche breadth relationship exists for Fagus, one of the most dominant and widespread broad-leaved deciduous tree genera in temperate forests of the Northern Hemisphere. Additionally, we ask whether the 10 extant Fagus species’ niche breadths and climatic tolerances are under phylogenetic control. Location: Northern Hemisphere temperate forests. Taxon: Fagus L. Methods: Combining the global vegetation database sPlot with Chinese vegetation data, we extracted 107,758 relevés containing Fagus species. We estimated biotic and climatic niche breadths per species using plot-based co-occurrence data and a resource-based approach, respectively. We examined the relationships of these estimates with range size and tested for their phylogenetic signal, prior to which a Random Forest (RF) analysis was applied to test which climatic properties are most conserved across the Fagus species. Results: Neither biotic niche breadth nor climatic niche breadth was correlated with range size, and the two niche breadths were incongruent as well. Notably, the widespread North American F. grandifolia had a distinctly smaller biotic niche breadth than the Chinese Fagus species (F. engleriana, F. hayatae, F. longipetiolata and F. lucida) with restricted distributions in isolated mountains. The RF analysis revealed that cold tolerance did not differ among the 10 species, and thus may represent an ancestral, fixed trait. In addition, neither biotic nor climatic niche breadths are under phylogenetic control. Main Conclusions: We interpret the lack of a general positive range size–niche breadth relationship within the genus Fagus as a result of the widespread distribution, high among-region variation in available niche space, landscape heterogeneity and Quaternary history. The results hold when estimating niche sizes either by fine-scale co-occurrence data or coarse-scale climate data, suggesting a mechanistic link between factors operating across spatial scales. Besides, there was no evidence for diverging ecological specialization within the genus Fagus.
Open Access: Open access publication
License: (CC BY 4.0) Creative Commons Attribution 4.0(CC BY 4.0) Creative Commons Attribution 4.0
Sponsor/Funder: Publikationsfonds MLU
Journal Title: Journal of biogeography
Publisher: Wiley-Blackwell
Publisher Place: Oxford [u.a.]
Volume: 48
Issue: 5
Original Publication: 10.1111/jbi.14074
Page Start: 1240
Page End: 1253
Appears in Collections:Open Access Publikationen der MLU