[Taxacom] Taxacom Digest, Vol 185, Issue 14

[JF Mate]

>
> " Surely vicariance is such that the distance between landmasses varies
> over time and the chances of dispersal between the landmasses decreases as
> the distance between them increases. In practice, vicariance itself may
> involve dispersal over short distances. As the distance increases, the
> fewer species are able to disperse.Stephen"
>

Yes. It's a simple exponential decay with each taxon having a different
ability to disperse and an element of serendipity thrown in. Beyond the
phylogenies and the macrobiogeographical patterns there have been plenty of
experimental studies looking at island colonization (Simberloff & Wilson
for example) that show this pattern. It is like arguing that microevolution
experiments/observations don't support evolution. Anyway, back to the cage.

Jason


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> Nurturing nuance while assailing ambiguity for about 34 years, 1987-2021.
>