What does relative abundance tell?
What is the difference between richness and abundance?
Relative abundance tells us how many percentages of the microbiome is made up of a specific organism, e.g. if E. coli make up 1% or 10% of the total amount of bacteria detected in a sample.
What is relative abundance of bacteria?
Species abundance refers to the number of individuals per species. Species A has high relative species abundance compared to species B, C, and D. If we look at Community 1, each of the four species contributes to 25% of the population. The relative abundance of each species is more evenly distributed than Community 1.
Relative species abundance is calculated by dividing the number of species from one group by the total number of species from all groups.
How are percent abundance and relative abundance different?
The relative abundance of an isotope is the percentage of atoms with a specific atomic mass found in a naturally occurring sample of an element. The relative abundance of each isotope can be determined using mass spectrometry.
