Richness or number of observed species
Richness or number of observed species
richness(x)
x |
A numeric vector of species counts or proportions. |
The richness is simply the number of nonzero elements in x.
Relation to other definitions:
Equivalent to observed_otus() in skbio.diversity.alpha.
Equivalent to specnumber in vegan.
Equivalent to the sobs calculator in Mothur.
The number of species observed, R ≥q 0.
x <- c(15, 6, 4, 0, 3, 0) richness(x) # 4
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.