Comparison of Measurement Indices of Diversity, Richness, Dominance, and Evenness in Rangeland Ecosystem (Case Study: Jvaherdeh-Ramesar)
Authors
Abstract
The diversity and richness of species are of important components to evaluate the health of ecologic system of rangelands. This research was conducted to investigate the biodiversity in riparian and neighboring areas via comparison of indices in Javaherdeh rangeland of Ramsar. Plot-transects was randomly used to estimate diversity, richness, dominance, and evenness indices in two regions. Multi Linear regression method was used to analyze the relationships of three indices to rangeland condition. Results of floristic list showed that there were 66 species belong to 19 families and 56 genera. Gramineae and Compositae families with values of (23.24 and 12.1%) had the highest and Boraginaceae and Hypolepidaceae with 2% had the lowest frequency, respectively. Result showed that richness species index in riparian area and diversity index in neighboring area had high correlation with the rangeland conditions. Hence, ecologic management could be used as a tool for evaluation of indices as reflectors of disturbance in rangeland.
