Abundance (ecology)

In ecology, local abundance is the relative representation of a species in a particular ecosystem.

[3] Abundance is in simplest terms usually measured by identifying and counting every individual of every species in a given sector.

[4] High density of a species in multiple localities will usually lead to it being relatively abundant over all in an ecosystem.

[1] Species abundance distribution (SAD) is one of the main uses of this measurement.

SAD is a measurement of how common, or rare species are within an ecosystem.

[6] These are measurement methods which involve estimation based on viewing a specific area of a designated size.