Meaning of Evenness, Richness and Dominance

Evenness: Evenness is a measure of the relative abundance of the different species making up the richness of an area and expresses how evenly the individuals in a community are distributed among the different species.

Richness: The number of species per sample is a measure of richness. The more species present in a sample, the 'richer' the sample. Species richness as a measure on its own takes no account of the number of individuals of each species present. It gives as much weight to those species which have very few individuals as to those which have many individuals.

Dominance: Measure of diversity which takes into account both richness and evenness of species. It is often used to quantify the biodiversity of a habitat.