Perhaps a multi-response permutation procedure (MRPP) would be appropriate. It is available in PC-Ord. However, I am just learning this analysis.
John John F. Weishampel Department of Biology University of Central Florida Orlando, FL 32816-2368 e-mail: [EMAIL PROTECTED] web site: http://pegasus.cc.ucf.edu/~jweisham voice: (407) 823-6634 fax: (407) 823-5769 >>> Liane Cochran-Stafira <[EMAIL PROTECTED]> 10/4/2006 12:08 PM >>> Hi David, You might try Nick Gotelli's Ecosim software. It offers 1. Co-Occurrence 2. Macroecology 3. Niche Overlap 4. Size Overlap 5. Species Diversity 6. Standard Tests 7. Guild Structure Perhaps the Co-occurence program might help. I know it can handle a large number of species. Liane At 07:31 PM 10/2/2006, you wrote: >Hi >I have been analyzing old field seedling and sapling composition and trying >to compare it with adjacent mature forest. I have decided on using % BA for >the adjacent mature forest and % sapling abundance as measures. >I am stymied because I have not found a statistical test that will handle >composition data very well. (especially in situations with relatively high >numbers of species). > >any ideas? > >thanks > >David *************************** Liane Cochran-Stafira, Ph.D. Associate Professor Department of Biology Saint Xavier University 3700 West 103rd Street Chicago, Illinois 60655 phone: 773-298-3514 fax: 773-298-3536 email: [EMAIL PROTECTED] http://faculty.sxu.edu/~cochran/
