---------- Forwarded message ---------- From: *Benjamin O'Leary* <benjamin.ole...@monash.edu> Date: Tuesday, 8 December 2015 Subject: Community analysis of average plant trait values with phylogenetic context To: Xianyun Mao <xianyun...@gmail.com>, tm...@psu.edu, rossellda...@gmail.com, steve.kem...@gmail.com, dacke...@berkeley.edu, s.blombe...@uq.edu.au, cornw...@zoology.ubc.ca, p...@berkeley.edu, mrhel...@wisc.edu, morlon.hel...@gmail.com, cw...@oeb.harvard.edu
Hi All, My name is Ben O'Leary, i am a student at Monash university in Melbourne Australia. I have recently completed an honours project which i now hope to publish as a paper. I have studied a range of leaf trait values of Australia's Eucalyptus species. I have also built a phylogenetic tree for the species. We have produced regional averages for a number of traits which we then compared against regional averages in environmental variables. There appears to be some correlation between trait values and environmental data, however we now want to perform a similar analysis which takes community averaged/regional phylogenetic relationships into account. We have run a PGLS analysis but that focuses on individuals species rather than regional assemblages. Is there a PGLS equivalent for analyzing mean trait values for mutiple communities as a function of environmental variables, taking into account the phylo relationships of the community members, and if so can you suggest a package/paper/example? We have used within and between region mean phylogenetic distance and mean nearest neighbour phylogenetic distance as our metrics and we will now also investigate the Sorenson index. For any statistical analysis we will run, i'm wondering how the covariance matrix is built. As an alternative if no predesigned system exists, could we incorporate something like a between community MPD as our covariance? What then would make up the line of variance? Also does the matrix need to ultra metric? Thanks very much for your help Kind regards Ben [[alternative HTML version deleted]] _______________________________________________ R-sig-phylo mailing list - R-sig-phylo@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-phylo Searchable archive at http://www.mail-archive.com/r-sig-phylo@r-project.org/