The manual includes explanations on all menu commands, computational formulas, comments and recommendations on the various statistics taken from important recent literature sources.
Plots changes in betadiversity along a gradient.
Expected number of species per either standardized area or sample size, distribution and variance of the results, graphic representation of the rarefaction curves. Three forms of extension of similarity indices for quantitative data. Kendall's rank correlation coefficient is included. Diversity and similarity indices may be used as niche width and overlap measures. McArthur-Levin, Pianka, Hurlbert indices provide a direct measure of overlap among species.