Question

some of the datasets are 32 and the average is 30 but what is their abundance?

Answer 1

Answer:

According to Legendre and Legendre 2013 p 283, the diversity index H (you can call it « entropy or f oder 1») can be interpreted in probabilistic terms, and refers to : «the uncertainty about the identity (species) of an organism picked at random from the sampling unit». H is small (low H values) when the unit is dominated by a few species, or when the local richness (species number) is small. You always need to report de log base used to calculate H, and be consistent about it.