Final answer:
Species richness and species evenness are measures of biodiversity that describe the total number of species in an area and the relative abundance of each species.
Step-by-step explanation:
The total number of species in a given area and the relative abundance of each species in that system is a measure of biodiversity. This is often referred to as species richness and species evenness. Species richness is the number of different species present in a habitat or ecosystem, while species evenness refers to the relative abundance of each species compared to others.
For example, in a forest ecosystem, the total number of different tree species present represents species richness. The relative abundance of each tree species, such as the number of individuals of oak trees compared to maple trees, represents species evenness.