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Visualize predator-prey mass ratio patterns in ZooMSS results

Source: R/zoomss_plotting.R
plotPPMR.Rd

Creates a plot showing the distribution of predator-prey mass ratios (PPMR) across functional groups, providing insights into the trophic structure of the ecosystem.

Usage

plotPPMR(mdl, idx)

Arguments

mdl

ZooMSS results object containing model outputs and parameters

idx

The time index to plot

Value

ggplot object showing PPMR distribution with species-specific overlays

Details

Plot Predator-Prey Mass Ratio (PPMR)

This function calculates and visualizes PPMR patterns by:

  • Computing theoretical PPMR values for each functional group and size class

  • Weighting by biomass to show realized community patterns

  • Creating a density plot of PPMR distribution across the community

  • Overlaying species-specific PPMR values as points

PPMR is a key ecological metric that describes the size relationship between predators and their prey, providing insight into food web structure and energy transfer efficiency in marine ecosystems.

Examples

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