Dear all, I have a couple of questions regarding the GMYC model and its implementation. First of all, I am applying the model similarly to Humphreys and Barraclough (2014), trying to identify clusters above the species level. I applied the single threshold method but it was not significantly better than the null model. So I applied the multiplethreshold method and it was significant. Do you have any ideas on how to interpret these results? And secondly, with the function gmyc.support() I get support for nodes, but how do I interpret these values? Are they similar to bootstrap values or bayesian posterior probabilities? Thank you in advance, Marco
See:
Factors affecting species delimitations with the GMYC model: insights from a butterfly survey
Methods in Ecology and Evolution
Volume 4, Issue 12
December 2013
Pages 1101–1110
DOI: 10.1111/2041-210X.12107
I hope this helps :)
Have you tryed the bayesian implementation of the GMYC model (bGMYC, https://sites.google.com/site/noahmreid/home/software). In this way you take into account the uncertainty in the underlying tree topologies and branch lengths.
Good luck!
https://sites.google.com/site/noahmreid/home/software
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