It sounds as though you are looking to do a cluster analysis for statistical grouping of like estuaries. This method is outlined in virtually all multivariate analysis books. PROC CLUSTER is the SAS procedure.
Best Ling Ling Huang Sacramento City College --- On Wed, 9/26/12, Wayne Tyson <[email protected]> wrote: From: Wayne Tyson <[email protected]> Subject: Re: [ECOLOG-L] Visualizing functional diversity To: [email protected] Date: Wednesday, September 26, 2012, 7:11 PM Please describe function in ecosystems. WT ----- Original Message ----- From: "Katharine Miller" <[email protected]> To: <[email protected]> Sent: Wednesday, September 26, 2012 4:07 PM Subject: [ECOLOG-L] Visualizing functional diversity Hello, I have used Rao's quadratic entropy to evaluate functional diversity between a number of estuaries for which I also have a GIS database. I would like to be able to visualize which sites are more functionally similar across the region to evaluate patterns in dispersal, etc. I know it is possible to use the pairwise functional beta diversity values as a distance matrix in a Mantel test or multivariate regression on distances matrices (MRM) when comparing functional diversity to, for example, environmental data. Would it also be appropriate to use these values in a PAM or other clustering method to identify estuaries that are more/less similar in functional diversity? This is likely to sound like a very naive question, but I have done an extensive literature search and have not found where this has been done before - perhaps because it is a bad idea for other reasons? Any insights and/or references on this approach would be greatly appreciated. Thank you ----- No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1427 / Virus Database: 2441/5293 - Release Date: 09/26/12
