Computes the Chao 1 species richness estimator
Computes the Chao 1 richness estimator, its estimated variance, and the corresponding 95
Vector of species abundances.
Different equations are used to compute the classic Chao1 richness estimator, its estimated variance, and the corresponding 95
A data frame with five columns including the observed number of species (Sobs), the estimated number of species with the Chao 1 estimator (S.chao1), the estimated variance (var), and the upper and lower 95
Chao, A. (1987). Estimating the population size for capture-recapture data with unequal catchability. Biometrics 43, 783-791.
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