Barro Colorado Island's phylogenetic assemblage structure across fine spatial scales and among clades of different ages.

摘要: Phylogenetic analyses of assemblage membership provide insight into how ecological communities are structured. However, despite the scale-dependency many processes, little is known about and source pool size definitions can be altered, either alone or together, to diversity maintained. Moreover, although studies have acknowledged that different clades within an may structured by forces, there has been no attempt relate age a clade its community phylogenetic structure. Using phylogenies spatially explicit data for trees from Barro Colorado Island (BCI), we show larger assemblages, assemblages with pools, more phylogenetically clustered. We argue this reflects competition, influence pathogens, chance assembly at smaller spatial scales, all operating context wider-scale habitat filtering. A measure based on null model derived explicitly trait evolution theory, D, better able detect these differences than commonly used measures such as SESMPD SESMNTD. also moderate tendency stronger clustering in younger clades, which suggests coarse diverse missing important variation among clades. Our results emphasize importance scale phylogenetics varying scales help untangle complex processes.