[R-sig-eco] wascores() for metaMDS?

[gabriel singer]

Hi sig-ecology!

Here comes a probably stupid question... I am looking for smart ways to 
include information about underlying variables in MDS plots. In other 
words, after having computed an ordination with isoMDS or metaMDS from a 
community table, I would like to add something like species 
coefficients/loadings as vectors to the plot of sites. As no species 
coefficients exist in this case, the best I could come up with so far is 
simply vectors calculated from correlation coefficients of the 
individual species with the site scores (on two MDS axes).
The function metaMDS allows to compute "species scores" using the 
function wascores().... I have now pondered for 2 days how these scores 
are calculated and what their precise meaning would be. Would these 
species scores be appropriate to show as vectors in the MDS?
Thanks for any answer...

Gabriel Singer