Zeta diversity as a concept and metric that unifies incidence-based biodiversity patterns.

摘要: AbstractPatterns in species incidence and compositional turnover are central to understanding what drives biodiversity. Here we propose zeta (ζ) diversity, the number of shared by multiple assemblages, as a concept metric that unifies incidence-based diversity measures, patterns, relationships. Unlike other measures turnover, partitioning quantifies complete set components for comprehensively representing spatial structure multispecies distributions. To illustrate application ecological value show how it scales with sample number, grain, distance. Zeta reconciles several different biodiversity including accumulation curve, species-area relationship, occupancy scaling endemism. Exponential power-law forms associated stochastic versus niche assembly processes. diver...