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<DIV dir=ltr align=left><SPAN class=609313811-18082011><FONT color=#0000ff
face=Arial><STRONG>The site was chosen for restoration because it was more
native to start with then typical sites in Maryland. We have found that we do
not have to plant natives since they move in from contiguous areas after
the invasive plants are removed. About 20% of our sites have this degree of %
native cover. The only continuing form of disturbance is lack of deer
control; (they won't let us bring the wolf or cougar back.). Secondary
succession started typically about 70 years ago in this park before the
invasives came except for Japanese Honeysuckle. Indigenous
early succession species such as poison ivy, greenbriar, and sweetgum are not
abundant. </STRONG></FONT></SPAN></DIV>
<DIV dir=ltr align=left><SPAN class=609313811-18082011><STRONG><FONT
color=#0000ff face=Arial></FONT></STRONG></SPAN> </DIV>
<DIV dir=ltr align=left><STRONG><FONT face=Arial><FONT color=#0000ff><SPAN
class=609313811-18082011>Marc</SPAN><SPAN
class=609313811-18082011></SPAN></FONT></FONT></STRONG></DIV>
<DIV dir=ltr align=left><SPAN class=609313811-18082011><STRONG><FONT
color=#0000ff face=Arial></FONT></STRONG></SPAN> </DIV><BR>
<DIV dir=ltr lang=en-us class=OutlookMessageHeader align=left>
<HR tabIndex=-1>
<FONT size=2 face=Tahoma><B>From:</B> Wayne Tyson [mailto:landrest@cox.net]
<BR><B>Sent:</B> Monday, August 15, 2011 11:37 PM<BR><B>To:</B> Marc Imlay;
apwg@lists.plantconservation.org<BR><B>Subject:</B> Ecosystem Restoration and
Alien Species Management Re: [APWG] Native grassland and forest understory
weedings 99%<BR></FONT><BR></DIV>
<DIV></DIV>
<DIV><FONT size=2 face=Arial>Marc and APWG: </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>I am not familiar with this ecosystem.
</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Is the site in a state of "secondary succession?"
</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>What kind of perturbations preceded the invasions?
</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Is there any continuing form of disturbance?
</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>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 size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>What fraction of the present vegetation consists of
indigenous "climax" species and what fraction consists of indigenous "pioneer"
species? </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>What is the strategy with respect to on-site seeds
or other viable propagules, and what are their estimated numbers? </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>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 size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Are you tracking population curves for these
species? When will the rates of increase "go critical?" </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>What other measures have been taken to accelerate
ecological succession? </FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Sorry if these are too many questions.
</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>WT</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<BLOCKQUOTE
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dir=ltr>
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; 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 size=3 face=Arial><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 size=3
face=Arial><STRONG>Presently, the Asiatic Bittersweet dominating 0.5
acres was </STRONG></FONT></FONT><FONT size=2><FONT size=3
face=Arial><STRONG>eradicated, Periwinkle 0.5 acres
</STRONG></FONT></FONT><FONT size=2><FONT size=3
face=Arial><STRONG>eradicated, </STRONG></FONT></FONT><FONT size=2><FONT
size=3 face=Arial><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 size=3 face=Arial><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 size=3 face=Arial><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 size=3 face=Arial><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 size=3
face=Arial><STRONG>This site will become 30-50% invaded unless we maintain
protection in a timely manner.</STRONG></FONT></FONT></P><FONT size=2><FONT
size=3 face=Arial>
<DIV><FONT size=2><STRONG><FONT size=3 face=Arial>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="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black">Natural and Historical
Resources Division</SPAN><o:p></o:p></STRONG></FONT></P>
<P class=MsoAutoSig><FONT size=3><STRONG><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black">The Maryland-National
Capital Park and Planning Commission</SPAN><o:p></o:p></STRONG></FONT></P>
<P class=MsoAutoSig><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: black"><A
title=blocked::http://www.pgparks.com/ href="http://www.pgparks.com/"><SPAN
style="COLOR: black" title=blocked::http://www.pgparks.com/><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.
<P>
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