If richness in a ecosystem be high, dose it mean that the value of Biodiversity is high too?

Question

Richness=Number of species
Value of Biodiversity= Numeric value of bidiversity's indices

Answer 1

Yes, if species richness is high, biodiversity will also be high, but the 2 measures are not linearly related because richness is a direct count and biodiversity is calculated with a formula that incorporates the relative numbers of the different species.

An increase in biodiversity is usually an indication of an increase in the stability of the populations, because of alternate food sources etc..

Answer 2

High richness means there are many species in the ecosystem, so it would also have high biodiversity.

The value of high biodiversity is not an ecological question, since the answer depends on who's value system you are using. Some people think that areas of high biodiversity are more important than other types of areas, some people think all species have the same importance, and some people think only humans are important.