Estimating species richness by a Poisson-compound gamma model

Ji-Ping Wang

Biometrika, 2010, vol. 97, issue 3, 727-740

Abstract: We propose a Poisson-compound gamma approach for species richness estimation. Based on the denseness and nesting properties of the gamma mixture, we fix the shape parameter of each gamma component at a unified value, and estimate the mixture using nonparametric maximum likelihood. A least-squares crossvalidation procedure is proposed for the choice of the common shape parameter. The performance of the resulting estimator of N is assessed using numerical studies and genomic data. Copyright 2010, Oxford University Press.

Date: 2010
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