model.rity.apply: Use RITY

In barrks: Calculate Bark Beetle Phenology Using Different Models

Use RITY

Description

This page describes the usage of RITY with phenology(). The model specific inputs are listed and its basic functionality is explained. RITY (also called RITY-2) was published by \insertCiteOgris2019;textualbarrks and parametrized for Ips typographus in Slovenia.

Arguments

tmin, tmean, tmax	Daily minimum/mean/maximum temperatures in °C. For the development submodel, the parameter that is obligatory depends on mode.
daylength	Length of the day in hours. Can be created with create_daylength_rst() or create_daylength_rst().
mode	Specifies which temperature should be used to calculate the development. Can be min, mean or max.
.submodels, .onset, .diapause, .mortality, ...	See phenology() for a detailled description of the function.

Details

In barrks, phenology() is used to apply a model. The following code illustrates which inputs are required to apply RITY and which additional parameters are available.

phenology("rity", ..., tmin = NULL, tmean = NULL, tmax, daylength, mode = 'max')

# calculate submodels separately
phenology("rity", ..., .submodels = 'onset', tmax)
phenology("rity", ..., .submodels = 'diapause', daylength)
phenology("rity", ..., .submodels = 'mortality', tmax)
phenology("rity", ..., .submodels = 'development',
          .onset, .diapause = NULL, .mortality = NULL,
          tmin = NULL, tmean = NULL, tmax = NULL, mode = 'max')

Value

The function returns a phenology. Look here to find out how it can be analysed.

Functioning

In the following, the basic functioning of RITY is explained.

• Onset: See PHENIPS.

• Development: Based on PHENIPS with a few modifications:

  • The optimum curve is calculated according to \insertCiteWermelinger1998;textualbarrks without simplification.

  • The minimum, mean or maximum bark temperature can be used to calculate the development. These temperatures depend only on the respective air temperatures.

• Diapause: See PHENIPS.

• Mortality: See PHENIPS.

Look here to find out how the model parameters affect the actual calculations and which values are used by default.

References

\insertAllCited

See Also

model(), phenology(), model.rity.customize

Other phenology applications: model.bso.apply, model.chapy.apply, model.joensson.apply, model.lange.apply, model.phenips.apply, model.phenips_clim.apply

barrks documentation built on Aug. 29, 2025, 5:32 p.m.