Imagine that there are four ecological communities. In community 1 there are 7 species. In community 2 there are 18 species. In community 3 there are 5 species. Lastly, in community 4 there are 27 species. If these four communities all have the same evenness, which community will have the highest Shannon index of diversity? there is not enough information to determine the highest Shannon index of diversity community 4 community 3 community 2 community 1
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Step 1: The Shannon index of diversity is calculated as: $H = -\sum_{i=1}^{S} p_i \log_2 p_i$ where $S$ is the number of species and $p_i$ is the proportion of individuals belonging to species $i$. Show more…
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Community 1 contains 24 individuals of species A, 16 individuals of species B, 6 individuals of species C, and 4 individuals of species D. Community 2 contains 44 individuals of species A, 37 individuals of species B, and 19 individuals of species C. Use the Shannon diversity index to determine which community has the higher species diversity The Shannon index cannot be used to answer this question because species richness differs in communities 1 and 2. Community 2 is more diverse than community 1. Communities 1 and 2 are equally diverse. Community 1 is more diverse than community 2.
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Community 1 contains 100 individuals distributed among four species: $5 \mathrm{A}, 5 \mathrm{B}, 85 \mathrm{C},$ and $5 \mathrm{D} .$ Community 2 contains 100 individuals distributed among three species: $30 \mathrm{A}, 40 \mathrm{B},$ and 30C. Calculate the Shannon diversity ( $H$ ) for each community. Which community is more diverse?
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