Comparison of diversity indices applied to macrophyte incidence-based data

• Autor(a) principal: Evangelista,Heloísa Beatriz Antoniazi
• Data de Publicação: 2012
• Outros Autores: Thomaz,Sidinei Magela, Evangelista,Luiz Roberto
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Brazilian Archives of Biology and Technology
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132012000200014
• topic: Tsallis entropy; macrophytes; reservoir; Shannon; Simpson

In this work, a recently proposed diversity index based on Patil and Taillie parametric diversity measure (or Tsallis entropy), Sq*, was applied to samples (presence-absence data) of macrophytes from the Itaipu Reservoir, Brazil. This new index was the value of the family of indices Sq for a specific evenness of a sample. Results demonstrated that the Shannon index and species richness showed expressively high correlation with the Sq*; however, the evenness had low correlation coefficients with the index Sq*, indicating that Sq* was particularly sensitive to rarity and species richness. On the other hand, the weak correlations of this index with evenness demonstrated that it was less sensitive to species relative abundances.