
Dear list,
I used the simper function in vegan package 2.0-3 to discriminate species between native and alien plant species in New Zealand using Bray-Curtis dissimilarity index. I would like to use a different dissimilarity index (e.g. Jaccard), because I used the Jaccard index to run a metaMDS on my community data, and because, using rankindex function, the Jaccard index had the highest rank-order similarity with gradient separation (elevation).
I tried to modify the simper code but it did not work.

Any help will be more than appreciated

Regards

Federico
 		 	   		  
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