VCE Environmental Science Practice Questions - VCE Environmental Science Units 3 & 4 (VCAA) Exam

What is the primary difference between species richness and species evenness in an ecological community?

Richness measures the total genetic variation within a single species, whereas evenness measures the physical size of the population. Richness measures the total number of distinct species present, whereas evenness measures the relative abundance of individuals among those species. Richness evaluates the geographical area covered by an ecosystem, whereas evenness measures the total biomass produced annually. Richness applies only to plant communities, whereas evenness applies exclusively to vertebrate fauna.

Correct Answer:

Richness measures the total number of distinct species present, whereas evenness measures the relative abundance of individuals among those species.

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