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<DIV><FONT face=Arial size=2>As the one who posted the original question, I
admit to an interest in the related (if tangential) issues, but my purpose was
to get help trying to answer the question about the hummingbird/tree tobacco
issue. Secondarily, I am interested in any reliable information that would
provide insight into the principles involved. That done, I would be happy to
move into the other issues, provided the discussion is about issues, not
personalities or ad hominem stuff (I do not object to such posts at all, but
will have no comment about them unless they are raised as a separate thread and
have something to say about an issue relevant to this list). </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Thanks for all of the replies, but please keep them
on APWG. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>WT</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>PS: Unless I am mistaken, APWG does include
invasive species. </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px solid; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=rlb14@cornell.edu href="mailto:rlb14@cornell.edu">Robert Layton
Beyfuss</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=scott.lenharth@gmail.com
href="mailto:scott.lenharth@gmail.com">Scott Lenharth</A> ; <A
title=apwg@lists.plantconservation.org
href="mailto:apwg@lists.plantconservation.org">apwg@lists.plantconservation.org</A>
</DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, July 30, 2010 10:54
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [APWG] FW: Science or
unfounded rumor?</DIV>
<DIV><BR></DIV>
<DIV dir=ltr><FONT face=Tahoma color=#000000 size=2>I am pleased to see that
some groups recognize the fact that even native plants may become invasive.
Wikipedia now gives a second definition of invasive that includes native
plants but the history of this term is based on country of origin. This
listserve is the Alien Plant Working Group however, not the invasive plant
working group. My question to you Scott and others on this list is this. If an
exotic, invasive plant that also happens to provide excellent
forage suddenly started to become established in pastures and
rangelands would you desire to eradicate it? I assume the
pastures are for grazing animals other than buffalo, i.e exotic animal
species. </FONT></DIV>
<DIV id=divRpF73528 style="DIRECTION: ltr">
<HR tabIndex=-1>
<FONT face=Tahoma size=2><B>From:</B> apwg-bounces@lists.plantconservation.org
[apwg-bounces@lists.plantconservation.org] On Behalf Of Scott Lenharth
[scott.lenharth@gmail.com]<BR><B>Sent:</B> Thursday, July 29, 2010 10:39
PM<BR><B>To:</B> apwg@lists.plantconservation.org<BR><B>Subject:</B> Re:
[APWG] FW: Science or unfounded rumor?<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV>
<DIV>On the contrary, native plants are labeled and managed as invasives when
their colonization disrupts a given ecosystem. Examples include the
various species of juniper here in the midwest and south. At the same
time, many human-introduced plants are routinely ignored in land management
since they pose no threat to the target habitat. Certain species of
Daucus fit this.</DIV>
<DIV> </DIV>
<DIV>There is a very real economic threat posed by invasives, especially in
the rangelands and farms of the western two-thirds of the country.
We're busy killing sericea (Lespedeza cuneata) this week NOT because we're
xenophobes or blindly following some imposed order from Albany, but
because it readily invades prairies and pastures - decreasing native species
and rendering the fields unfit for grazing.</DIV>
<DIV> </DIV>
<DIV>And yes, there are many factors involved in the changing plant
composition in world ecoregions. Is that news to anyone?</DIV>
<DIV> </DIV>
<DIV>(Wayne, your text quotes from an observation in the CA Native Plant
Society newsletter. Nothing more. Next step would be designing a
study, yes? Maybe someone did in the last 21 years.)</DIV></DIV>
<P>
<HR>
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Plant Working Group mailing
list<BR>APWG@lists.plantconservation.org<BR>http://lists.plantconservation.org/mailman/listinfo/apwg_lists.plantconservation.org<BR><BR>Disclaimer<BR>Any
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