Dear group, i was reading about this issue, in which envfit was performed on a dbRDA model https://github.com/vegandevs/vegan/issues/248 I think many people would perform some kind of a variable selection on this model, and possibly get a subset of significant predictors by anova.cca. In this example, envfit is used instead. After plot(dbrda) plot(vf, col = 'red') one can see that the differences are very small between the vector arrangements (vf vs. original dbRDA). So, my question is, in which scenario its recommended to perform envfit on top of an constrained ordination, which already tries to find a visual representation of environmental gradients through the ordination. Thank you!
Dr. Tim Richter-Heitmann University of Bremen Microbial Ecophysiology Group (AG Friedrich) FB02 - Biologie/Chemie Leobener Stra?e (NW2 A2130) D-28359 Bremen Tel.: 0049(0)421 218-63062 Fax: 0049(0)421 218-63069