[Taxacom] Long-distance oceanic dispersal (rafting) of Nothofagus species

[Michael Heads]

even one-in-a-thousand-years tsunamis would have occurred 20 000 times in
the Neogene alone, so you then have to explain why dispersal occurred only
once. And why the same pattern has occurred in many other groups. Of
course, that isn't a problem with chance dispersal, which can explain any
distribution at all.

On Sun, Jun 3, 2018 at 1:51 PM, Kenneth Kinman <kinman at hotmail.com> wrote:

> Hi all,
>       The recent thread got me thinking about a debate that some of us
> were having on taxacom almost 12 years ago.  Namely whether long-distance
> oceanic dispersal (by rafting) was a significant factor in the geographic
> distribution of some species of Nothofagus (sensu lato).
>        My hypothesis was that large rafts of dislodged Nothofagus trees
> (due to tsunami or other massive flooding event) could have held some of
> their fruit above the ocean surface and rafted from Tasmania to New
> Zealand, where one or more  new species could evolve (due to founder
> effect).  This would be a relatively short rafting event compared to the
> much longer driftwood oceanic rafting that happened from South America to
> Tasmania: Barber, 1959, in the journal Nature; "Transport of Driftwood from
> South America to Tasmania". Is there other evidence that such dispersal of
> Nothofagus could have happened? Could certain insects, mosses, or other
> organisms have hitched a ride on such a Nothofagus raft?
>                                    --------------Ken Kinman
> http://mailman.nhm.ku.edu/pipermail/taxacom/2006-December/108385.html
> _______________________________________________
> Taxacom Mailing List
> Send Taxacom mailing list submissions to: Taxacom at mailman.nhm.ku.edu
>
> http://mailman.nhm.ku.edu/cgi-bin/mailman/listinfo/taxacom
> The Taxacom Archive back to 1992 may be searched at:
> http://taxacom.markmail.org
> To subscribe or unsubscribe via the Web, visit:
> http://mailman.nhm.ku.edu/cgi-bin/mailman/listinfo/taxacom
> You can reach the person managing the list at:
> taxacom-owner at mailman.nhm.ku.edu
>
> Nurturing Nuance while Assaulting Ambiguity for 31 Some Years, 1987-2018.
>



-- 
Dunedin, New Zealand.

My books:

*Biogeography and evolution in New Zealand. *Taylor and Francis/CRC, Boca
Raton FL. 2017.
https://www.routledge.com/Biogeography-and-Evolution-in-New-Zealand/Heads/p/book/9781498751872


*Biogeography of Australasia:  A molecular analysis*. Cambridge University
Press, Cambridge. 2014. www.cambridge.org/9781107041028


*Molecular panbiogeography of the tropics. *University of California Press,
Berkeley. 2012. www.ucpress.edu/book.php?isbn=9780520271968


*Panbiogeography: Tracking the history of life*. Oxford University Press,
New York. 1999. (With R. Craw and J. Grehan).
http://books.google.co.nz/books?id=Bm0_QQ3Z6GUC
<http://books.google.co.nz/books?id=Bm0_QQ3Z6GUC&dq=panbiogeography&source=gbs_navlinks_s>