[R] gamm: problems with corCAR1()

[Ben Bolker]

Karel V <karel.viaene <at> ugent.be> writes:

> 
> Dear all,
> 
> I’m analyzing this dataset containing biodiversity indices, measured over
> time (Week), and at various contaminant concentrations (Treatment). We have
> two replicates (Replicate) per treatment. 
> I’m looking for the effects of time (Week) and contaminant concentration
> (Treatment) on diversity indices (e.g. richness).


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