[Mesquitelist] Calculating sum of branch lengths for clades

[Wayne Maddison]

Michel's already answered regarding the availability of this function 
through his stratigraphic packages, but to clarify Tuatara's 
calculations:

Total phylogenetic diversity is simply the sum of branch lengths over 
the whole tree; it doesn't partition it clade by clade.

Otherwise the Tuatara package focuses on calculating values that 
pertain to terminal taxa, not to clades (e.g., conservation priority 
of a species).

Wayne


At 3:41 PM +0200 14.5.2009, Jon Bråte wrote:
>Dear all,
>
>I am trying to calculate total branch lengths within different clades 
>in a tree. Preferably also accounting for the number of taxa in each 
>clade. I installed the Tuatara package for Mesquite in order to try 
>the "Total Phylogenetic Diversity" option, but I cannot find or use 
>this option.
>Can anybody help me with this?
>
>Thank you,
>
>Jon
>
>-------------------------------------------------------------
>Jon Bråte
>PhD student
>
>Microbial Evolution Research Group (MERG)
>Department of Biology
>University of Oslo
>P.b. 1066 Blindern
>N-0316 Oslo
>Norway
>Phone: +47 22855083
>
>_______________________________________________
>Mesquitelist mailing list
>Mesquitelist at mesquiteproject.org
>http://mesquiteproject.org/mailman/listinfo/mesquitelist


-- 
--------------------------------------------------------
Wayne Maddison
  Professor and Canada Research Chair
          Depts. of Zoology and Botany and
          Biodiversity Research Centre
  & Director
          Beaty Biodiversity Museum
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  University of British Columbia
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