title: A phylogenetic perspective on the individual species-area relationship in temperate and tropical tree communities.
abstract: Ecologists have historically used species-area relationships (SARs) as a tool to understand the spatial distribution of species. Recent work has extended SARs to focus on individual-level distributions to generate individual species area relationships (ISARs). The ISAR approach quantifies whether individuals of a species tend have more or less species richness surrounding them than expected by chance. By identifying richness 'accumulators' and 'repellers', respectively, the ISAR approach has been used to infer the relative importance of abiotic and biotic interactions and neutrality. A clear limitation of the SAR and ISAR approaches is that all species are treated as evolutionarily independent and that a large amount of work has now shown that local tree neighborhoods exhibit non-random phylogenetic structure given the species richness. Here, we use nine tropical and temperate forest dynamics plots to ask: (i) do ISARs change predictably across latitude?; (ii) is the phylogenetic diversity in the neighborhood of species accumulators and repellers higher or lower than that expected given the observed species richness?; and (iii) do species accumulators, repellers distributed non-randomly on the community phylogenetic tree? The results indicate no clear trend in ISARs from the temperate zone to the tropics and that the phylogenetic diversity surrounding the individuals of species is generally only non-random on very local scales. Interestingly the distribution of species accumulators and repellers was non-random on the community phylogenies suggesting the presence of phylogenetic signal in the ISAR across latitude.
authors: Key Laboratory of Tropical Forest Ecology, Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Kunming, China.
authors: Jie
authors: J
authors: Yang
authors: Nathan G
authors: NG
authors: Swenson
authors: Min
authors: M
authors: Cao
authors: George B
authors: GB
authors: Chuyong
authors: Corneille E N
authors: CE
authors: Ewango
authors: Robert
authors: R
authors: Howe
authors: David
authors: D
authors: Kenfack
authors: Duncan
authors: D
authors: Thomas
authors: Amy
authors: A
authors: Wolf
authors: Luxiang
authors: L
authors: Lin
mesh_terms: D044822:Biodiversity; D008954:Models, Biological; D010802:Phylogeny; D063148:Plant Dispersal; D016012:Poisson Distribution; D014197:Trees; D014329:Tropical Climate
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