The relationship between niche breadth and range size of beech ( <i>Fagus</i> ) species worldwide
نویسندگان
چکیده
Aim This work explores whether the commonly observed positive range size–niche breadth relationship exists for Fagus, one of most dominant and widespread broad-leaved deciduous tree genera in temperate forests Northern Hemisphere. Additionally, we ask 10 extant Fagus species’ niche breadths climatic tolerances are under phylogenetic control. Location Hemisphere forests. Taxon L. Methods Combining global vegetation database sPlot with Chinese data, extracted 107,758 relevés containing species. We estimated biotic per species using plot-based co-occurrence data a resource-based approach, respectively. examined relationships these estimates size tested their signal, prior to which Random Forest (RF) analysis was applied test properties conserved across Results Neither nor correlated size, two were incongruent as well. Notably, North American F. grandifolia had distinctly smaller than (F. engleriana, hayatae, longipetiolata lucida) restricted distributions isolated mountains. The RF revealed that cold tolerance did not differ among species, thus may represent an ancestral, fixed trait. In addition, neither Main Conclusions interpret lack general within genus result distribution, high among-region variation available space, landscape heterogeneity Quaternary history. results hold when estimating sizes either by fine-scale or coarse-scale climate suggesting mechanistic link between factors operating spatial scales. Besides, there no evidence diverging ecological specialization Fagus.
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ژورنال
عنوان ژورنال: Journal of Biogeography
سال: 2021
ISSN: ['0305-0270', '1365-2699']
DOI: https://doi.org/10.1111/jbi.14074