fishers.alpha(N, S, give=FALSE)
fisher.ecosystem(N, S, nmax, alpha=NULL, c=0)
fisher.ecosystem()
, the expected size of the ecosystemfisher.ecosystem()
, Fisher's
$\alpha$. If not supplied, it will be calculated from
N
and S
.fishers.alpha()
, Boolean variable with
default FALSE
meaning to return alpha, and TRUE
meaning to return a list containing x
and alpha
.fisher.ecosystem()
, the maximum number
of species abundance classes to considerfisher.ecosystem()
, the rare species
advantage termfishers.alpha()
solves for $\alpha$ given
$N$ and $S$, as per Fisher's table 9, p55. Given $N$ and $S$ (or $\alpha$), function
fisher.ecosystem()
generates a Fisherian ecosystem
with expected size $N$ and expected species count $S$.
fishers.alpha(N=100000,S=100)
#compare the Table value:
100000/10^3.95991
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