Generalized entropy indices to measure α- and β-diversities of macrophytes

Generalized entropy indices to measure α- and β-diversities of macrophytes

H. B. A. Evangelista, S. M. Thomaz, R. S. Mendes, L. R. Evangelista, Brazilian Journal of Physics 39, 396 (2009). PDF | DOI

A family of entropy indices constructed in the framework of Tsallis entropy formalism is used to investigate ecological diversity. It represents a new perspective in ecology because a simple equation can incorporate all aspects of adiversity, from richness to dominance and can be also related to a measure of species rarity. In addition, a generalized Kullback-Leibler distance, constructed in the framework of a nonextensive formalism, is recalled and used as a measure of β-diversity between two systems. These tools are applied to data relative to the macrophytes collected from two not far apart arms of Itaipu Reservoir, in Paraná River basin.