FW: Islands, Science and Creationism

Janice at Janice at
Tue Apr 16 10:04:29 CDT 2002


And to complicate matters, humans have been translocating animals and plants
from place to place by water transport since at least 11,000 BP
(archaeological evidence from fox, Urocyon littoralis, Channel Islands, CA,
USA ) to 22,000 BP (evidence from eastern Pacific islands).  I would bet
they also transported small animals and plants over land during migrations
for the same reasons, probably because they were important for use in
rituals or were a traditional food item.

Jan Koler-Matznick



----- Original Message -----
From: "Richard Jensen" <rjensen at SAINTMARYS.EDU>
To: <TAXACOM at USOBI.ORG>
Sent: Tuesday, April 16, 2002 11:22 AM
Subject: Re: FW: Islands, Science and Creationism


> Curtis Clark wrote:
>
> Just as organisms in their beings carry traces of their entire
evolutionary
>
> > history, in their locations they carry traces of their entire geographic
> > history.
>
> I agree with the first part of this statement, but can't buy in to the
second
> part (i.e.,
> an organism's current location carries traces of its entire geographic
history).
> Knowing that species X is endemic to cedar glades in middle Tennessee
tells us
> nothing about it geographic history.  Is it a relatively recent
evolutionary
> novelty that had its origin there, is it a relictual population of a once
more
> widely dispersed taxon, or is it the result of a long-ago vicariance
event?  All
> are equally likely propositions.  Not until we know something about the
taxonomic
> relationships and hypothesized evolutionary history of the species can we
begin
> to construct biogeographic scenarios to explain why it is found there and
nowhere
> else.
>
> Dick
> --
> Richard J. Jensen              TEL: 219-284-4674
> Department of Biology      FAX: 219-284-4716
> Saint Mary's College         E-mail: rjensen at saintmarys.edu
> Notre Dame, IN  46556     http://www.saintmarys.edu/~rjensen
>




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