Species Topology

Species Richness(N): The number of species found in a community.

Shannon-Wiener Index (H): Abundance based diversity index. The higher the value, the greater the diversity.

Simpson Index (D): Dominance based diversity index. The higher value, the greater the diversity.

  
     
q =



Biodiversity Range
 
Richness:
Shannon Index :
Simpson Index :
Hill Numbers :
*Shannon Index is another index that is commonly used to characterize species diversity in a community Shannon's index accounts for both abundance and evenness of the species present. ... Equitability assumes a value between 0 and 1 with 1 being complete evenness.

*Simpson's Index is a measure of diversity which takes into account the number of species present, as well as the relative abundance of each species. As species richness and evenness increase, so diversity increases. n = the total number of organisms of a particular species.