Supplement 1. Three input files and an r script.

File List sang_sp.txt sang_en.txt sang_tr.txt RLQ_script_Danny.r Description Three input files are provided that contain the species-by-sites data matrix (sang_sp.txt), sites-by-environment data matrix (sang_en.txt) and species-by-traits data matrix (sang_tr.txt). Also included is an r script (RLQ_script_Danny). The script is in Tinn-R so this program will need to be downloaded first. It is freely available at http://www.sciviews.org/Tinn-R/index.html (checked 2 Nov 2006). Copy and paste the script into R for results. For the main results presented in the paper copy the script up to and including ‘randtest.rlq(rlqout)’. The final two lines present box plots to show the variation in trait categories along the RLQ axes. ‘sco.boxplot(rlqout$mQ[,1],Qqual)’ gives a boxplots for the first axis, ‘sco.boxplot(rlqout$mQ[,2],Qqual)’ for the second axis etc.