[R-sig-eco] partial Mantel test

Dear r users, I have a very quick and probably very easy question pertaining to the conducting of a partial Mantel test in the vegan package using the code below. mantel.partial(xdis, ydis, zdis, method = "pearson", permutations = 999, strata) So I want to test for a relationship between a speci

[R-sig-eco] marginal vs sequential results of lme

Dear R users, I am having a problem with interpreting "anova" results of a linear mixed effects model. The data I am analyzing is from study that was set up as a randomized block design with two factors at two levels. The model is: m1 <- lme(Y~A*B, random = ~1|Block) The design is comple

[R-sig-eco] issue with using different error terms within the same model

Dear R users, I am trying to analyze a data set from an experiment where I measured nitrate over time. The study was set up in 5 blocks with four plots in each (For now let’s assume that Block is a Fixed effect). Within each block I randomly assigned one treatment combination of two possible treat