norm_alpha {rdiversity}

Normalised alpha (low level diversity component)

Description

Calculates the low-level diversity component necessary for calculating normalised alpha diversity.

Usage

norm_alpha(meta)

Arguments

meta

object of class metacommunity

Details

Values generated from norm_alpha() may be input into subdiv() and metadiv() to calculate normalised subcommunity and metacommunity alpha diversity.

Value

norm_alpha returns an object of class powermean

References

R. Reeve, T. Leinster, C. Cobbold, J. Thompson, N. Brummitt, S. Mitchell, and L. Matthews. 2016. How to partition diversity. arXiv 1404.6520v3:1–9.

Examples

pop <- data.frame(a = c(1,3), b = c(1,1))
row.names(pop) <- paste0("sp", 1:2)
pop <- pop/sum(pop)
meta <- metacommunity(pop)

# Calculate normalised alpha component
a <- norm_alpha(meta)
subdiv(a, 1)
metadiv(a, 1)