Biology: Diversity index questionWatch
A- a woodland with 10 different species, and approximately 100 individuals of each species
B- a woodland with 25 different species, in which 90% of all individuals belong to one species
1) The number of different species (species richness)
2) The relative abundance of each species in comparison to each other (species evenness)
For example, a community may have loads of species (high species richness), but one species may dominant and account for the vast majority of the relative abundance of organisms in the community (low species evenness). In this case, that community would not be described as diverse.
Another community may have less species, but each species shows a similar abundance of organisms and, hence, an even distribution of species. This community could be described as diverse.
Use this to answer the question.
(There is a formula you can use to calculate the diversity index, but you need to know the total numbers of each species - which isn't given for community B).