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Plot fitted LANDIS-II growth curves against PSP observations

plot_species_growth_curves.Rd

Overlays the fitted LANDIS-version growth curve (BscaledNonLinear) on the permanent-sample-plot (PSP) biomass observations behind it, faceted by species and coloured by ecoregion. A calibration diagnostic for the Biomass Succession species parameterization produced – in LANDIS mode – by the Biomass_speciesParameters SpaDES module: it shows how each fitted growth curve sits within the spread of the PSP data, and how that data is distributed across ecoregions.

Usage

plot_species_growth_curves(
  landis_curves,
  psp_points,
  biomass_label = quote("Biomass" ~ (g ~ m^-2))
)

Arguments

landis_curves

A data frame with columns species, standAge, and BscaledNonLinear – e.g. the speciesGrowthCurvesLandis output of Biomass_speciesParameters run in LANDIS mode.

psp_points

A data frame with columns speciesTemp (species code), standAge, biomass, and ecoregion – e.g. the speciesGrowthCurvesPSP output of Biomass_speciesParameters run in LANDIS mode.

biomass_label

Axis label for biomass, as a plotmath expression (or a plain string). Defaults to quote("Biomass" ~ (g ~ m^-2)).

Value

A ggplot object.

Details

Only species present in landis_curves get a fitted line; species that have PSP observations but no fitted curve (e.g. data-poor species, or a lumped "Other" group) are still shown as points.