skiptoniam / ecomix

ecomix is a package to implement model based species level (Species Archetype Models) or site level (Regions of Common Profile) grouping of community data.
https://skiptoniam.github.io/ecomix/
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Adding phylogenetic information to help delineate bioregions #2

Closed skiptoniam closed 7 years ago

skiptoniam commented 7 years ago

Use phylogenetic branch length to inform this process. When modelling species in a sites by species matrix you add in ‘new’ species which are species complexes. So for a simple example you model sp1, sp2 and sp12. This will blur the biogeographic delineation, as you are essential modelling the distributions of sp1 and sp2 as a single species. How deep you go in the tree will determine how high in the hierarchy you go. Presumably the deeper you go the broader the regions will get – all the way to the terminal branch you are then at a global scale.

Methodologically this should be quite easy – we’ll just need a function in the ecomix function that can create new ‘species’ based on their respective phylogenetic relationship, I’m sure there will be existing R packages that do this ‘ape’ ect.

The species matrix will then contain sites X sp + sp_phylo- combinations.

You could also weight the species and species complexes by their respective branch length. Thus each species would get a weighting - I'll have to talk to Scott about how to do this.