[Taxacom] RES: south-west Australia

[Curtis Clark]

On 6/22/2011 5:09 AM, John Grehan wrote:
> This discussion exemplifies what panbiogeography is all about. In my opinion, panbiogeography is not focused on hashing over theories and definitions about vicariance and dispersal based on some theoretical proposition or 'null hypothesis (as in Darwinian center of origin/dispersalist biogeography), but begins with a serious look at the facts of biogeography as represented by looking at how phylogenetic relationships and boundaries are geographically located and spatially related to each other.
Every science uses null hypotheses. All biogeographers use the null 
hypothesis "everything lives everywhere". If panbiogeographers haven't 
refined the null hypotheses beyond that, more's the shame, but I suspect 
they have. Otherwise, they are comparing their data with nothing.

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Curtis Clark
Cal Poly Pomona