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					  Shannon-Weiner index.




  H’= index of species diversity
  S= species richness (total # of species present)
  Pi = proportion of total sample belonging to the ith species
  Ln= natural log (base e = not the same of log!)

                                  proportion
species                 number    (pi)         Loge (pi)   pi(Logepi)
American robin               8         0.16      -1.832           0.293
mourning dove                7         0.14      -1.966           0.275
grackle                      9         0.18      -1.715           0.309
crow                         8         0.16      -1.832           0.293
chickadee                    8         0.16      -1.832           0.293
Red Belly woodpecker         5           0.1     -2.302            0.23
titmouse                     5           0.1     -2.302            0.23
                                                                 -1.923
                                                           H' = 1.923

				
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posted:11/27/2011
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