DImodels (version 1.3.2)

DI_compare: Compare a Fitted Diversity-Interactions Model to the Reference Model

Description

This function fits the reference model internally and compares a DI model fit to it using anova.

Usage

DI_compare(model, ...)

Value

The function returns the reference model, a glm model object.

Arguments

model

A DI model object.

...

Further arguments passed to anova.

Author

Rafael A. Moral, John Connolly and Caroline Brophy

Details

This function takes a DI model object as input, fits the reference model internally and compares the two models using anova. The reference model includes an additive effect of community (each unique combination of species proportions) in the linear predictor. For more details on the reference model, see Connolly et al. (2013).

References

Connolly J, T Bell, T Bolger, C Brophy, T Carnus, JA Finn, L Kirwan, F Isbell, J Levine, A Lüscher, V Picasso, C Roscher, MT Sebastia, M Suter and A Weigelt (2013) An improved model to predict the effects of changing biodiversity levels on ecosystem function. Journal of Ecology, 101, 344-355.

See Also

DI autoDI

Examples

## Load the sim1 data
  data(sim1)

## Fit the FULL model
  m1 <- DI(y = "response", block = "block", prop = 3:6, 
           DImodel = "FULL", data = sim1)

## Compare with the reference model
  DI_compare(m1, test = "F")