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Plot Occupancy-Abundance Relationship

Source: R/analysis.R
plot_occupancy_abundance.Rd

Scatterplot of total abundance (per species) versus site occupancy (number of quadrats in which the species occurs) with both axes on a log scale. Adds an optional least-squares trend line for visual guidance.

Usage

plot_occupancy_abundance(oa_data)

Arguments

oa_data

A data frame as returned by calculate_occupancy_abundance with columns Species, TotalAbundance (non-negative numeric), and Occupancy (non-negative integer).

Value

A ggplot object.

Details

If the input contains no observations (or all totals are zero), a minimal placeholder plot is returned indicating that there is nothing to draw. Otherwise both axes are shown on base-10 logarithmic scales.

See also

calculate_occupancy_abundance

Examples

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