On the relationship between species diversity and range size

Guo, Qinfeng; Qian, Hong; Zhang, Jian

doi:10.1111/jbi.14477

Cited by 19 publications

(39 citation statements)

References 52 publications

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“…Species assemblages of these geographic units have been frequently used in ecological and biogeographic studies (e.g. Sandel et al ., 2020; Brodie et al ., 2021; Hagen et al ., 2021; Guo et al ., 2022). Species lists of native ferns for the geographic units were derived primarily from World Plants (https://www.worldplants.de) and Plants of the World online (http://www.plantsoftheworldonline.org).…”

Section: Methodsmentioning

confidence: 99%

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Global patterns and climatic determinants of phylogenetic structure of regional fern floras

et al. 2023

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Knowledge of relationships between phylogenetic structure of a biological assemblage and ecological factors that drive the variation of phylogenetic structure among regions is crucial for understanding the causes of variation in taxonomic composition and richness among regions, but this knowledge is lacking for the global flora of ferns. Here, we fill this critical knowledge gap.We divided the globe into 392 geographic units on land, collated species lists of ferns for each geographic unit, and used different phylogenetic metrics (tip-vs basal-weighted) reflecting different evolutionary depths to quantify phylogenetic structure. We then related taxonomic and phylogenetic structure metrics to six climatic variables for ferns as a whole and for two groups of ferns (old clades vs polypods) reflecting different evolutionary histories across the globe and within each continental region.We found that when old clades and polypods were considered separately, temperaturerelated variables explained more variation in these metrics than did precipitation-related variables in both groups. When analyses were conducted for continental regions separately, this pattern holds in most cases.Climate extremes have a stronger relationship with phylogenetic structure of ferns than does climate seasonality. Climatic variables explained more variation in phylogenetic structure at deeper evolutionary depths.

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Section: Methodsmentioning

confidence: 99%

“…S1. Following Guo et al (2022), we grouped them into six continental (biogeographic) regions: Europe, Asia, Northern America, Africa, Australasia, and Southern America (Fig. S1).…”

Section: Species Assemblage Datamentioning

confidence: 99%

Global patterns and climatic determinants of phylogenetic structure of regional fern floras

et al. 2023

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“…Therefore, the climatic niche breadths inherent to the species within a region may influence the region's degree of endemism. Patterns of speciation and extinction also influence the distribution of species range sizes within a region, with areas of high speciation leading to small range sizes and specialized niches across a community (Belmaker et al, 2012; Chejanovski & Wiens, 2014; Guo et al, 2022; Jetz et al, 2004). However, the effects of topography, climate stability, evolution, and ecology on vertebrate endemism have not been fully parsed (Harrison & Noss, 2017; Keppel et al, 2018; Sandel et al, 2020; Veron et al, 2019; but see Acevedo & Sandel, 2021; Zuloaga et al, 2019).…”

Section: Introductionmentioning

confidence: 99%

Disentangling the drivers of continental mammalian endemism

Shipley

McGuire

2023

Global Change Biology

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Endemic species and species with small ranges are ecologically and evolutionarily distinct and are vulnerable to extinction. Determining which abiotic and biotic factors structure patterns of endemism on continents can advance our understanding of global biogeographic processes, but spatial patterns of mammalian endemismhave not yet been effectively predicted and reconstructed. Using novel null model techniques, we reconstruct trends in mammalian endemism and describe the isolated and combined effects of physiographic, ecological, and evolutionary factors on endemism. We calculated weighted endemism for global continental ecoregions and compared the spatial distribution of endemism to niche-based, geographic null models of endemism. These null models distribute species randomly across continents, simulating their range sizes from their degree of climatic specialization. They isolate the effects of physiography (topography and climate) and species richness on endemism. We then ran linear and structural models to determine how topography and historical climate stability influence endemism. The highest rates of mammalian endemism were found in topographically rough, climatically stable ecoregions with many species. The null model that isolated physiography did not closely approximate the observed distribution of endemism (r 2 = .09), whereas the null model that incorporated both physiography and species richness did (r 2 = .59). The linear models demonstrate that topography and climatic stability both influenced endemism values, but that average climatic niche breadth was not highly correlated with endemism.Climate stability and topography both influence weighted endemism in mammals, but the spatial distribution of mammalian endemism is driven by a combination of physiography and species richness. Despite its relationship to individual range size, average climate niche breadth has only a weak influence on endemism. The results highlight the importance of historical biogeographic processes (e.g. centers of speciation) and geography in driving endemism patterns, and disentangle the mechanisms structuring species ranges worldwide.

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“…We first estimated the spatial pattern of range size of 9898 Chinese endemic angiosperms. We have also estimated the species' richness pattern of these species because plant species' richness has been found to be negatively correlated with species range size in previous studies (Guo et al, 2022; Orme et al, 2006; Stevens, 1989, 1992; Xu et al, 2018). Since range size across different species may be phylogenetically conserved at the species level (Lyu et al, 2021), we calculated Blomberg's K as a measure of phylogenetic signal of species range size using the function phylosig from the R package “phytools.” At the species level, we fitted a phylogenetically corrected linear mixed‐effects model by maximum likelihood (“lmekin” within the R package “coxme”; Orme, 2012) to examine the relative effects of climatic variables and functional traits on species range size.…”

Section: Methodsmentioning

confidence: 99%

Geographic patterns in range sizes and their drivers of endemic angiosperms in China

Wang,

Lyu,

Luo

et al. 2023

Ecosphere

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Geographic range size of endemic species is the most important indicator of species' vulnerability to extinction and conservation prioritization, yet variation in range size among species and across space has been relatively understudied. We investigated the variations and geographic patterns of the range size of 9898 angiosperm species endemic to China and compared the effects of historical and contemporary climate and species' functional traits associated with dispersal ability (including growth form, fruit type, and sexual system) on range size variations. Our results revealed that narrow‐ranged endemic species are clustered in Southwest China where angiosperm species' richness peaks. Winter temperature had the strongest and negative effect on the range size of narrow‐ranged endemic species across space and species, while climate seasonality had the strongest and positive effect on the range size of wide‐ranged endemic species. Both historical and contemporary climate have also influenced species range size indirectly via their effects on species' functional traits associated with dispersal ability. Range size of all endemic species, narrow‐ranged and wide‐ranged, showed little phylogenetic signal, suggesting that phylogenetic conservatism plays a minor role in range size variations. Our results show that the range size of angiosperm species endemic to China is driven by both extrinsic spatiotemporal environmental factors and intrinsic species' traits that allow species to cope with environmental change.

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On the relationship between species diversity and range size

Cited by 19 publications

References 52 publications

Global patterns and climatic determinants of phylogenetic structure of regional fern floras

Global patterns and climatic determinants of phylogenetic structure of regional fern floras

Disentangling the drivers of continental mammalian endemism

Geographic patterns in range sizes and their drivers of endemic angiosperms in China

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