species abundance curves

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Assessing species diversity
species abundance curves rank-abundance
curves Shannon-Weaver index
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Species abundance curves
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Species abundance curves
What if they had collected a much smaller sample?
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Rank-abundance curves
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Rank-abundance curves
species richness? species evenness?
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Shannon-Weaver index
H S pi loge pi
decimal proportion of the ith species
pi decimal proportion of the ith species loge
pi natural log of pi and S is the sum
from i1 to s where s number of
species in the community
7
Shannon-Weaver index
H S pi loge pi
decimal proportion of the ith species
natural log of pi
With 3 species H (-1)(p1logep1
p2logep2 p3logep3)