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<DIV><FONT face=Arial size=2>Marc and APWG: </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>I am not familiar with this ecosystem.
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Is the site in a state of "secondary succession?"
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What kind of perturbations preceded the invasions?
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Is there any continuing form of disturbance?
</FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Is there a "pristine" site, herbarium collection,
or other source of baseline data for comparison with present (and other later)
states? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What fraction of the present vegetation consists of
indigenous "climax" species and what fraction consists of indigenous "pioneer"
species? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What is the strategy with respect to on-site seeds
or other viable propagules, and what are their estimated numbers? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What is the general proximity of populations
of the alien species eradicated from the site, and what is the state or
potential for dispersal and in-migration? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Are you tracking population curves for these
species? When will the rates of increase "go critical?" </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>What other measures have been taken to accelerate
ecological succession? </FONT></DIV>
<DIV><FONT face=Arial size=2></FONT> </DIV>
<DIV><FONT face=Arial size=2>Sorry if these are too many questions.
</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></FONT> </DIV>
<BLOCKQUOTE dir=ltr
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=ialm@erols.com href="mailto:ialm@erols.com">Marc Imlay</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <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> Saturday, August 13, 2011 2:25
PM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [APWG] Native grassland and
forest understory weedings 99%</DIV>
<DIV><BR></DIV><!-- Converted from text/plain format -->
<P align=left><FONT size=2><FONT face=Arial size=3><STRONG>At the 200 acre
Swann Park in Charles County Maryland, the fifteen principle
invasives dominated over 20 acres (very little overlap) in 1998.
</STRONG></FONT></FONT><FONT size=2><FONT face=Arial
size=3><STRONG>Presently, the Asiatic Bittersweet dominating 0.5 acres
was </STRONG></FONT></FONT><FONT size=2><FONT face=Arial
size=3><STRONG>eradicated, Periwinkle 0.5 acres </STRONG></FONT></FONT><FONT
size=2><FONT face=Arial size=3><STRONG>eradicated,
</STRONG></FONT></FONT><FONT size=2><FONT face=Arial size=3><STRONG>English
ivy 0.2 acres eradicated, Ailanthus the 0.5 acres in 6 areas of patches
eradicated, Garlic Mustard 2.5 acres reduced to 0.5 acres, Japanese stilt
grass 3 acres reduced to 1 acre. Beefsteak Plant 0.5 acres
reduced to 0.2 acres, MFR 1 acre now 0.2 acres (no seed producing left),
Wineberry 1 acre now eradicated, Chinese Privet 0.25 acres eradicated.
Gill-over the ground 0.2 acres almost eradicated. Beal's barberry 0.1 acres
eradicated, Japanese barberry 0.2 acres now 0.1 acre. Bamboo 0.2 acres almost
eradicated. </STRONG></FONT></FONT></P>
<P align=left><FONT size=2><FONT face=Arial size=3><STRONG>For Japanese
Honeysuckle, 10 acres, the vertical component up the trees was
entirely removed by 2000 and half of the horizontal component is removed
because it is no longer served by light reaching the verticle
component. 25% of the remaining horizontal component was
removed.</STRONG></FONT></FONT></P>
<P align=left><FONT size=2><FONT face=Arial size=3><STRONG>About half was
removed mechanically with an average of 5 volunteers working once
a month for about 10 years and half treated chemically.
</STRONG></FONT></FONT><FONT size=2><FONT face=Arial size=3><STRONG>In
summary, about 10% of the herbaceous and shrub cover was non-native as well as
cover by two tree species. It is now about
2% </STRONG></FONT></FONT><FONT size=2><FONT face=Arial
size=3><STRONG>This site will become 30-50% invaded unless we maintain
protection in a timely manner.</STRONG></FONT></FONT></P><FONT size=2><FONT
face=Arial size=3>
<DIV><FONT size=2><STRONG><FONT face=Arial size=3>Marc Imlay, PhD,
Conservation biologist</FONT><BR><FONT size=3><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'">Park Ranger Office (301) 442-5657
cell </SPAN><o:p></o:p></FONT></STRONG>
<P class=MsoAutoSig><FONT size=3><STRONG><SPAN
style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">Natural and Historical
Resources Division</SPAN><o:p></o:p></STRONG></FONT></P>
<P class=MsoAutoSig><FONT size=3><STRONG><SPAN
style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'">The Maryland-National
Capital Park and Planning Commission</SPAN><o:p></o:p></STRONG></FONT></P>
<P class=MsoAutoSig><SPAN
style="COLOR: black; FONT-FAMILY: 'Arial','sans-serif'"><A
title=blocked::http://www.pgparks.com/ href="http://www.pgparks.com/"><SPAN
title=blocked::http://www.pgparks.com/ style="COLOR: black"><FONT
title=blocked::http://www.pgparks.com/ size=3><STRONG
title=blocked::http://www.pgparks.com/>www.pgparks.com</STRONG></FONT></SPAN></A></SPAN><o:p></o:p></P></DIV>
<P align=left></FONT><FONT color=#0000ff size=2></FONT><BR> </P>
<P align=left></FONT>-----Original Message-----<BR>From:
apwg-bounces@lists.plantconservation.org [<A
href="mailto:apwg-bounces@lists.plantconservation.org">mailto:apwg-bounces@lists.plantconservation.org</A>]
On Behalf Of Craig Dremann - Redwood City Seed Company<BR>Sent: Friday, August
12, 2011 12:48 PM<BR>To: apwg@lists.plantconservation.org<BR>Subject: [APWG]
Native grassland and forest understory weedings 99%<BR><BR>Dear Marc and
All,<BR><BR>The remarkable other side to Mark Vande Pol's weeding, is
everywhere that was covered with weeds, is now covered by local native plants
in the grasslands and forest understory.<BR><BR>I am pleased to hear that you
joined the 99% club at Swann park in<BR>Maryland-- so how many people over how
much time, did it take to do how many acres, with what weeds were you dealing
with, and have you ever written up your experience anywhere?<BR><BR>Any others
who belong to the 99% club out there?<BR><BR>Sincerely, Craig Dremann
(650)
325-7333<BR><BR><BR>_______________________________________________<BR>PCA's
Alien Plant Working Group mailing list APWG@lists.plantconservation.org <A
href="http://lists.plantconservation.org/mailman/listinfo/apwg_lists.plantconservation.org">http://lists.plantconservation.org/mailman/listinfo/apwg_lists.plantconservation.org</A><BR><BR>Disclaimer<BR>Any
requests, advice or opinions posted to this list reflect ONLY the opinion of
the individual posting the message.<BR></P></FONT>
<P>
<HR>
<P></P><BR>_______________________________________________<BR>PCA's Alien
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
requests, advice or opinions posted to this list reflect ONLY the opinion of
the individual posting the message.
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