Re: [R-sig-eco] null model selection in functional diversity analysis

2014-10-27 Thread Marc Taylor
Dear Zoltan, Thank you for this interesting suggestion. I'm wondering if you might be able to suggest any papers that have used this approach in past? It does have the advantage of maintaining many of the community patterns that are often associated with functional diversity indices - i.e. total

[R-sig-eco] null model selection in functional diversity analysis

2014-10-23 Thread Marc Taylor
Dear r-sig-ecology listers, I am involved in a study whose objective is the see if there relationships between the functional diversity of the fish community and environmental factors of the sample site for a number of sites in a bounded environment. Specifically, we are looking at the parameters

Re: [R-sig-eco] null model selection in functional diversity analysis

2014-10-23 Thread Zoltan Botta-Dukat
Dear Marc, Try the permutation of trait values! Such permutation does not change any of the patterns that you mentioned and probably wanted to be constrained. On the other hand, it removes the correlation between traits and environment, and also correlation between traits and abundance.