Diversity Indices
Diversity index gives a measure of the way in which individuals in an ecological community are distributed among species.
Arabian Sea:
In Arabian Sea (Cr. No. 228 & 233) Shannon-wiener diversity (H’(log2)), Peilou’s evenness (J’) and Species richness (d) were found to be higher at 500 m depth region. The diversity ranged from 0.73 to 2.24 and maximum was found at 500 m depth zone (Fig. 3.8a). Evenness was found to be in the range 0.31 to 0.70 (Fig. 3.8b) and richness in the range 0.87 to 1.7 (Fig. 3.8c). Dominance (λ) showed an inverse relationship with diversity and ranged from 0.2