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RE: invasives/ definition

Title: [GWL] invasives/ definition
I have no problem with Mr.. Mezitt's definition other than the fact that indigenous plants can't be invasive. Some extremist see any non native plant that can reproduce without the help of man as invasive, regardless of the size of the colony. Biodiversity is something to be achieved not limited.
John
 
--Original Message-----
From: gardenwriters-admin@lists.ibiblio.org [mailto:gardenwriters-admin@lists.ibiblio.org]On Behalf Of Larry Maupin
Sent: Saturday, June 22, 2002 1:01 AM
To: gardenwriters@lists.ibiblio.org
Subject: [GWL] invasives/ definition

on 6/21/02 11:37 PM, Marge Talt at mtalt@hort.net wrote:

> This thread, which discusses a topic that comes up on lists
> periodically, made me wonder just what everyone's definition of
> "invasive" is.  I have this feeling the word means different things
> to different folks.  What do you think it means?

Wayne Mezitt's recent post regarding the Weston Nursery article on the topic <http://www.westonnurseries.com/New_Site_Pages/Articles_INVASIVE.htm> defines it thusly:

"So, what really is an invasive plant? There is general agreement that there are certain characteristics that help qualify a plant to be ³invasive² in a particular area:
*       It is non-indigenous to the region;
*       It is widespread and has become naturalized in undisturbed areas;
*       It produces and disperses high numbers of seeds or propagules; and
*       It out-competes and displaces natural plants or fundamentally changes an ecosystem¹s functioning."

I'm certain that "invasive" means different things to different folks, all need fresh information on this important topic. For some of the latest developments, check the Missouri Botanical Garden site: <http://www.mobot.org/iss/>
--
Larry Maupin
Maupin Photography
Freelance Garden Writer/Photographer
Member, Garden Writers Assoc. of Amer.
larrymaupin@sbcglobal.net
Dallas, TX   214/341-3933
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