Dear R-helpers, conducting different community ecology analyses my main aim is to find groupings in the data and geographical borders between communities and to prove them statistically. So after conducting a global test (Mantel) I am running a NMS and cluster analyses. These are followed by other tests. However, I have two questions concerning the cluster analyses which I was not able to solve so far: 1) I would like to calculate "% chaining" for specific clusters. How can I do that in R? 2) I would like to calculate several clusters with different methods and then merge them in a "consensus" cluster, similar to a consensus tree used in genetic analyses. Is this possible and if yes how? Any help or hint is greatly appreciated! with kind regards Johannes -- Project Coordinator BIOTA West Amphibians Museum of Natural History Dep. of Research (Herpetology) Invalidenstrasse 43 D-10115 Berlin Tel: +49 (0)30 2093 8708 Fax: +49 (0)30 2093 8565 http://www.biota-africa.org http://community-ecology.biozentrum.uni-wuerzburg.de