Re: [R-sig-eco] mixed effects in ordination (?)

Dear Bob and others, Thank you very much for your answer. I realized I forgot to mention the nature of the params: these are mostly root system architectural traits, and, as you can imagine, they are just a subset of many possible ones. The goal is merely to show how groups of traits are related t

Re: [R-sig-eco] mixed effects in ordination (?)

This doesn't sound like an ordination problem: it's more similar to a standard mixed model regression. There are several ways to approach this, for example Ben Bolker has some (old) notes here: I'd suggest you start by running the analyses on each trait individ

[R-sig-eco] mixed effects in ordination (?)

Dear friends, Could you please help me with analysis? I am afraid that it involves crossed random effects in the mixed-effect constrained ordination setting, so to say. Goal: Show an effect of the species trait (single one) and treatment (four levels, quantitative scale) on parameters. Trait x tr