Re: [R-sig-eco] Post-hoc for adonis

2011-12-14 Thread Kay Cecil Cichini
Angie, You could apply customized contrasts. Check this: http://thebiobucket.blogspot.com/2011/08/two-way-permanova-adonis-with-custom.html I'd also appreciate comments on the approach that I used in the above-mentioned link! Cheers, Kay Zitat von Angie Larsen allgut...@gmail.com:

Re: [R-sig-eco] interpreting adonis results

2011-11-17 Thread Kay Cecil Cichini
..to be save I would consider to exclude an effect due to different multivariate spread. See chapter 5.2, Homogeneity of groups and beta diversity, in the vegan tutorial at http://cc.oulu.fi/~jarioksa/opetus/metodi/vegantutor.pdf. best, kay Zitat von Gavin Simpson

Re: [R-sig-eco] adonis question

2011-06-25 Thread Kay Cecil Cichini
...@gmail.com: Dear Kay, I ran your code and found no significant interactions. You just got unlucky with rnorm(), as can happen. Try it again. Cheers, Etienne -Original Message- From: r-sig-ecology-boun...@r-project.org [mailto:r-sig-ecology-boun...@r-project.org] On Behalf Of Kay Cecil

[R-sig-eco] adonis and contrasts

2011-06-17 Thread Kay Cecil Cichini
hello all, in https://stat.ethz.ch/pipermail/r-sig-ecology/2010-April/001221.html jari oksanen describes how to use custom contrasts with adonis. i'm curious whether there's also a way to yield the according significance tests - else i don't see much purpose in customizing your

Re: [R-sig-eco] repeated measures NMDS?

2010-11-11 Thread Kay Cecil Cichini
gavin, sorry - of course it should be permute.strata=F, permuting within individual sites! but despite of this the code should work, doesn't it? thanks, kay Gavin Simpson schrieb: On Wed, 2010-11-10 at 23:33 +0100, Kay Cecil Cichini wrote: hi eduard, i faced similar problems recently

Re: [R-sig-eco] repeated measures NMDS?

2010-11-11 Thread Kay Cecil Cichini
- beeing a male name opposed to the english kay. Gavin Simpson schrieb: [Apologies - I replied with this only to Kay. Hopefully she won't mind receiving it twice!] On Thu, 2010-11-11 at 10:32 +0100, Kay Cecil Cichini wrote: thanks a lot for your elaborations. of course, envfit(..,strata=rep.mes

Re: [R-sig-eco] repeated measures NMDS?

2010-11-10 Thread Kay Cecil Cichini
hi eduard, i faced similar problems recently and came to the below solution. i only try to address the pseudoreplication with an appropiate permutation scheme. when it comes to testing the interactions, things may get more complicated. the code is in no way approven of, but at least it maybe

[R-sig-eco] bootstrapping diversity indices

2010-07-13 Thread Kay Cecil Cichini
hello all, i want to know whether pooled invaded quadrats (n=6) show decreased diversity compared to pooled uninvaded quadrats (n=6) - or in other words, whether species are lacking from invaded quadrats. to yield confidence limits i bootstrapped pooled absence/presence species data from