Occupancy-Abundance Table — calculate_occupancy_abundance • spesim

Summarise total abundance and site occupancy (number of sites with non-zero counts) for each species from a site x species matrix.

Usage

calculate_occupancy_abundance(abund_matrix)

Arguments

abund_matrix: A data frame where the first column is site (site / quadrat identifier) and the remaining columns are species abundances (non-negative integers).

Value

A data frame with columns:

Species: Species (column) name.
TotalAbundance: Column sum across sites.
Occupancy: Number of sites with abundance \(> 0\).

See also

plot_occupancy_abundance, create_abundance_matrix

Examples

if (FALSE) { # \dontrun{
oa <- calculate_occupancy_abundance(abund_matrix)
head(oa)
} # }