TITLE:
The Rich-Gini-Simpson quadratic index of biodiversity
AUTHORS:
Radu Cornel Guiasu, Silviu Guiasu
KEYWORDS:
Rich-Gini-Simpson Index of Species Diversity; Additive Partitioning of Diversity; Island Biogeography; Biodiversity
JOURNAL NAME:
Natural Science,
Vol.2 No.10,
October
29,
2010
ABSTRACT: The Gini-Simpson quadratic index is a classic measure of diversity, widely used by ecologists. As shown recently, however, this index is not suitable for the measurement of beta diversity when the number of species is very large. The objective of this paper is to introduce the Rich- Gini-Simpson quadratic index which preserves all the qualities of the classic Gini-Simpson index but behaves very well even when the number of species is very large. The additive partitioning of species diversity using the Rich-Gini- Simpson quadratic index and an application from island biogeography are analyzed.