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<title>Jewelweed</title>
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<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:black">I always turn to the Executive Order on Invasive Species for my “invasive species” definition, which is: “an alien species* whose introduction does or is likely
to cause economic or environmental harm or harm to human health.” As for those plant species that occur/specialize in disturbed areas – I generally call these either native or alien weeds.
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<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:black">(*”Alien species" means, with respect to a particular ecosystem, any species, including its seeds, eggs, spores, or other biological material capable of propagating
that species, that is not native to that ecosystem.) <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:14.0pt;font-family:"Calibri","sans-serif";color:black">Johnny Randall<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> apwg-bounces@lists.plantconservation.org [mailto:apwg-bounces@lists.plantconservation.org]
<b>On Behalf Of </b>Wayne Tyson<br>
<b>Sent:</b> Tuesday, July 19, 2011 2:37 PM<br>
<b>To:</b> Wayne Vanderploeg; Maze, Dominic; Katie Fite; apwg@lists.plantconservation.org<br>
<b>Subject:</b> [APWG] Terminology still unresolved? Re: Jewelweed<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Arial","sans-serif"">Hello all,</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Arial","sans-serif"">Is there anyone who acknowledges (or would it be simpler to say "does not acknowledge") that there is at least a phenomenological difference between "alien" species that are
largely restricted to disturbed sites and those which "invade" healthy ecosystems?
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Arial","sans-serif"">I realize that some of the terminology used here is debatable too, and such discussion are worth having, but it would appear, if "invasion ecology" is to be taken seriously
as a sub-discipline of ecology, that clarity of terminology is vital to clear communication. Time was, colonization referred to any movement of an organism into a "new" location, plants (what about animals?) that were restricted to disturbed areas were termed
"ruderal," and "alien" organisms that colonized healthy/undisturbed ecosystems were called "invasive."
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Arial","sans-serif"">It appears that some believe there is no distinction. I would appreciate any correction, definitions, or suggestions that will bring discipline to communication about these
subjects. </span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Arial","sans-serif"">WT</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">----- Original Message -----
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<p class="MsoNormal" style="background:#E4E4E4"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<a href="mailto:wvanderploeg@ameritech.net" title="wvanderploeg@ameritech.net">Wayne Vanderploeg</a>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">To:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">
<a href="mailto:Dominic.Maze@portlandoregon.gov" title="Dominic.Maze@portlandoregon.gov">
Maze, Dominic</a> ; <a href="mailto:katie@westernwatersheds.org" title="katie@westernwatersheds.org">
Katie Fite</a> ; <a href="mailto:apwg@lists.plantconservation.org" title="apwg@lists.plantconservation.org">
apwg@lists.plantconservation.org</a> <o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Sent:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> Tuesday, July 19, 2011 10:24 AM<o:p></o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial","sans-serif"">Subject:</span></b><span style="font-size:10.0pt;font-family:"Arial","sans-serif""> Re: [APWG] Jewelweed<o:p></o:p></span></p>
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<p class="MsoNormal">Hello All, <br>
<br>
I don't usually make comment to this group....I generally browse this list to see what new issues are popping up. As a biologist/ecologist/naturalist/land manager for 31 years in the Chicago area with the Forest Preserve District of Cook County, I have seen
this plant come and go. Deer do browse it heavily and tend to prefer it over most other plants. It does well in disturbed areas where the soil is rich, moist and semi shaded. I have always viewed it as sensitive plant that is easily displaced by weeds and
never thought of it as a problem plant in the Chicago area. The fact that it is spreading prolifically in other areas where it typically does not occur could be a symptom of a bigger problem. I would expect it to disappear when those problems are discovered
and solved. <br>
<br>
Wayne Vanderploeg<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> "Maze, Dominic" <Dominic.Maze@portlandoregon.gov><br>
<b>To:</b> Katie Fite <katie@westernwatersheds.org>; "apwg@lists.plantconservation.org" <apwg@lists.plantconservation.org><br>
<b>Sent:</b> Tue, July 19, 2011 11:42:18 AM<br>
<b>Subject:</b> Re: [APWG] Jewelweed</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">Hi Katie et alia,</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">
<i>Impatiens capensis</i> is, in my experience, a problematic species here west of the Cascade Range in the Pacific NW. The densities of this sp. are pretty amazing with the understory of riparian corridors often dominated by it. I’ve been seeing more and
more of it in the Willamette Valley and surrounding ranges here in Oregon with seemingly little attention paid to it.</span><o:p></o:p></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy"> Interestingly, some land managers still consider this species native here on the West Coast, probably due to confusion with our native,
<i>I. ecalcarata</i> in some older floras and field guides. Ed Alverson of TNC wrote a short comment in reply to a posting on
<i>I. capensis</i> at the Botany Photo of the Day website:</span><o:p></o:p></p>
<p class="MsoNormal"> <o:p></o:p></p>
<p class="MsoNormal"><span class="apple-style-span"><span style="font-family:"Arial Narrow","sans-serif";color:#333333">“Impatiens capensis is an introduced and invasive species in the Pacific Northwest , west of the Cascades. Peter Zika addressed this issue
in a 2006 paper, "The status of Impatiens capensis (Balsaminaceae) on the</span></span><span style="font-family:"Arial Narrow","sans-serif";color:#333333"><br>
<span class="apple-style-span">Pacific Northwest coast", published in the Journal of the Torrey Botanical Club, vol. 133 pp. 593-600. In fact, I. capensis is spreading into the habitats of the uncommon native I. ecalcarata west of the Cascades, and the two
species are hybridizing. This has created a situation where the native species is potentially being out-competed by both the introduced species and by their hybrids. Zika has published another paper on the hybrid, which he has named Impatiens x pacifica ,
see "Impatiens x pacifica (Balsaminaceae), a New Hybrid jewelweed from the Pacific Northwest Coast of North America", Novon vol. 16, pp. 443-448, 2006.</span>”</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:navy">Add this spp. to
<i>I. glandulifera</i> (a big problem) and <i>I. balfourii</i> (an escaping species which may be a problem in the future), and we’ve got our hands full out here with the touch-me-nots.</span><o:p></o:p></p>
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<p class="MsoNormal" style="margin-left:.5in"><b><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:green">Dominic Maze</span></b><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:green"> |
</span><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:gray">Invasive Species Coordinator
</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:gray">City of Portland Environmental Services</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:gray">1120 SW 5th Avenue, Room 1000</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:gray">Portland, Oregon 97204</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:gray">p: (503) 823-4899</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:gray">f: (503) 823-5344</span><o:p></o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><span style="font-size:10.0pt;font-family:"Calibri","sans-serif";color:gray"><a href="mailto:dominic.maze@portlandoregon.gov" target="_blank">dominic.maze@portlandoregon.gov</a></span><o:p></o:p></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> apwg-bounces@lists.plantconservation.org [mailto:apwg-bounces@lists.plantconservation.org]
<b>On Behalf Of </b>Katie Fite<br>
<b>Sent:</b> Monday, July 18, 2011 5:46 PM<br>
<b>To:</b> apwg@lists.plantconservation.org<br>
<b>Subject:</b> [APWG] Jewelweed</span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""><br>
Has anyone had any experience with jewelweed (Impatiens) native to the eastern U. S. becoming weedy in valley marsh habitats in the intermountain West?
<br>
<br>
I see that jewelweed <i>Impatiens capensis</i> (orange jewelweed) is listed as a King County (WA) “Weed of Concern”.
<br>
<br>
This species is shown as having a yellow flowered form, which is what we are seeing.<br>
<br>
<a href="http://www.kingcounty.gov/environment/animalsAndPlants/noxious-weeds/laws/list.aspx" target="_blank">http://www.kingcounty.gov/environment/animalsAndPlants/noxious-weeds/laws/list.aspx</a><br>
<br>
Katie Fite<br>
Western Watersheds Project<br>
katie@westernwatersheds.org<br>
<br>
</span> <o:p></o:p></p>
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