Define species richness and species evenness. How do they contribute to the value of the Shannon-Weiner Index (H')? How do they each affect the shape of a rank-abundance plot? According to the intermediate disturbance hypothesis, both low and high levels of disturbance can reduce species diversity. Explain possible mechanisms producing this relationship, including competitiveness and dispersal ability.
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Species evenness, on the other hand, refers to the relative abundance of each species in the community. Both species richness and species evenness contribute to the value of the Shannon-Weiner Index (H'), which is a measure of biodiversity that takes into account Show more…
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