Rarefaction and extrapolation of species richness using an area-based Fisher's logseries.

ABSTRACT: Fisher's logseries is widely used to characterize species abundance pattern, and some previous studies used it to predict species richness. However, this model, derived from the negative binomial model, degenerates at the zero-abundance point (i.e., its probability mass fully concentrates at zero abundance, leading to an odd situation that no species can occur in the studied sample). Moreover, it is not directly related to the sampling area size. In this sense, the original Fisher's alpha (correspondingly, species richness) is incomparable among ecological communities with varying area sizes. To overcome these limitations, we developed a novel area-based logseries model that can account for the compounding effect of the sampling area. The new model can be used to conduct area-based rarefac

SUBMITTER: Chen Y 

PROVIDER: S-EPMC5723611 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature