I would like to run a GLMM on categorical data. In this case the response
data are abundance of insects of 4 trophic groups.

I am unsure whether I need to cbind the categories and run with the model
with family=multinomial4 or family=gaussian.

Also I'm unsure whether I should use lme4 package or MCMCglmm.

If anyone can give me any pointers, I would be most grateful.
I am new to R and mixed models so I apologize in advance.

Thank you

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