Visualize abundance size spectra across functional groups

Creates a log-log plot of abundance versus body size for all functional groups, showing the classic size spectrum pattern in marine ecosystems.

Usage

plotSizeSpectra(mdl, by = "abundance", n_years = 10)

Arguments

mdl

ZooMSS results object containing model outputs and parameters

by

Character string specifying the metric to plot. Options: "abundance", "biomass", "mortality", "growth" (default: "abundance")

n_years

The number of years (from the end) over which to average the size spectra

Value

ggplot object showing log abundance vs log body weight by species

Details

Plot Size Spectra for ZooMSS Results

This function visualizes the abundance size spectrum by:

• Converting abundance data to long format with body weights

• Filtering out zero abundances to focus on active size classes

• Creating log-log plots colored by functional group

• Using species-specific colors defined in the Groups parameter table

Size spectra are fundamental patterns in marine ecology, typically showing declining abundance with increasing body size. This visualization helps assess model realism and identify dominant size classes within each functional group.

Examples

if (FALSE) { # \dontrun{
# After running ZooMSS model
results <- zoomss_model(input_params, Groups)
size_plot <- plotSizeSpectra(results)
print(size_plot)
} # }