Phylogenetic beta diversity in bacterial assemblages across ecosystems: deterministic versus stochastic processes.

ABSTRACT: Increasing evidence has emerged for non-random spatial distributions of microbes, but knowledge of the processes that cause variation in microbial assemblage among ecosystems is lacking. For instance, some studies showed that deterministic processes such as habitat specialization are important, while other studies hold that bacterial communities are assembled by stochastic forces. Here we examine the relative influence of deterministic and stochastic processes for bacterial communities from subsurface environments, stream biofilm, lake water, lake sediment and soil using pyrosequencing of the 16S ribosomal RNA gene. We show that there is a general pattern in phylogenetic signal in species ecological niches across recent evolutionary time for all studied habitats, enabling us to infer the i

SUBMITTER: Wang J 

PROVIDER: S-EPMC3695296 | biostudies-literature | 2013 Jul

REPOSITORIES: biostudies-literature