Relative species abundance

Relative species abundance is an ecological measure of how common or rare a species is compared to other species living in the same defined location or community, expressed as the share of individuals of that species out of the total individuals present. It is a basic tool in biodiversity assessment, since the different species making up a community typically occur in characteristic proportions rather than in equal numbers, and the patterns these proportions follow are studied extensively in macroecology. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/