Hi there,

I am doing my PhD in Biogeochemistry and want to compare the relative distributions of certain lipids in environmental samples among different sites. I am looking at the relative abundances of 16 different compounds and need a measure for similarity in the distribution pattern. Does anyone have an idea how to deal with that? Actually I want to compare 20 sites (1,2, ... 20) with their corresponding sites (1*,2*, ... 20*) and reveal similarities and differences between e.g. 2 and 2* etc.

Thanks a lot for your help!