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Subject:
From:
"Martin H. Eastburn" <[log in to unmask]>
Reply To:
Conchologists List <[log in to unmask]>
Date:
Wed, 17 Oct 2007 16:23:55 -0500
Content-Type:
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Consider the tornado we have from time to time.
When as a lad of 3 or 4 I lived in Susun bay in the delta area NE of
San Francisco.

It was a small town built on a spit of land surrounded by slews and rivers.

A tornado walked through the slew and deposited tadpoles and fish
all over town.

A simple example of a vacuum to a young boy who thought it was neat
until the hot sun came out.   It took time and more rain storms
to clear the houses and bushes.  Birds helped but only so much could be
done.   That part of my memory for the most part is gone.  Must have
been bad.


As improbable for transportation by a hurricane - I had mentioned the
rip and tear mode for attached egg piles or such.   Once in the water
floating they are at the mercy of the water current.

The Hurricanes in the Gulf have been known to trap birds, fish and boats.
But when the water is like a mud bath of eggs during the season - times
when we
refuse to go snorkeling due to visibility  issues  that can be drawn
from area to area.

While on island we went through a number of large storms.  One storm
Zelda did a real number on the islands.  They always ripped reef off
the protective ring we lived upon. The heavy parts fell thousands of
feet deep while the light stuff - sea weed and what not was flung
to the far winds.  Traversing thousands of miles is sketchy, but
from chain to chain or island to island it seems logical.

And yes trees of all shapes sizes float in open ocean as well as
some large beautiful masts.  One can in that was so large (mast)
and it was full of worm holes - hum - open ocean but they attacked.
Maybe it washed ashore and blown out to sea again.  - it was cut
up into slabs of wood and dried.  Some beautiful wood that required
carbide tools was generated.

Martin

Allen Aigen wrote:
> As Martin noted, rare events, over a long enough period of time, come
> to be expected events.  Shallow water gastropod species with crawl
> away larva cannot crawl from island to island in the Caribbean where
> the water depth separating the islands is too great.  Even lowering
> the water a few hundred feet due to glaciation would not be sufficient
> in many cases to allow simple transport.  Although it can be
> considered to be very improbable for eggs or small specimens to be
> transported during a hurricane (possibly attached to a vegetation
> mat), over enough time they will be, and apparently this has happened
> for many shallow water species.  Could this also have been the
> deliberate or inadvertant work of people?  In some cases, possibly
> yes, in other cases they were spread long before people arrived.
>
> Allen Aigen
> [log in to unmask]
>
> -- "Martin H. Eastburn" <[log in to unmask]> wrote:
> Thinking on this - just a quick note - how about transportation and
> range extension:
>
> Egg clusters floating - even those attached - ripped up by a storm.
> Then the ocean stream tugs it from the south pacific up the Japanese
> current and drops some off here and there.
>
> Typhoons, hurricanes help rip and transport as well.
>
> While on Kwajalein - we had both bird and airplane caught in winds
> and came in for landings.
> And some of the 'crane' like 'stork' water walking birds might
> transport eggs on their feet/legs.   Boats in lakes do that as well.
>
> Naturally is nature way, not man doing it on purpose.
>
> Martin
>
> Pete Krull wrote:
> >  The term "range extension" to me means that someone has found a
> naturally
> > occurring, long standing population outside of the area where we already
> > knew they lived. The "range" of many species is greater than what we
> know at
> > any point in time only because we haven't discovered the true limits
> to that
> > range.
> >
> > An "introduction", by definition, is not a range extension. Pete K.
> >

--
Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Life; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/

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