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<DIV><FONT face=Arial size=2>Mark: Your information on the control of
invasives in the 200 acre Swan Park project in Maryland was
encouraging. We need more estimates like this
of person-hours and years required to achieve this level of managment in
forested natural areas. I am on the board of a park advisory group trying
to manage a 640 acre urban, semi-forested natural area which is
continually being invaded horticulcural landscape species such as
honeysuckle species, privet, Juniper, white Briony, Western Hackberry,
Mahaleb Cherry, and Russian Olive. All clearly imported by roosting
passerine birds. We need to organize a similar volunteer corps to do the
selective removal over a period of years. Do you have some advice or
direction for us to get such a project organized and sustained over a period of
years? Ty Harrison</FONT></DIV>
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<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> Thursday, August 18, 2011 5:52
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [APWG] Ecosystem Restoration
and Alien Species Management Re:Native grassland and forest understory
weedings 99%</DIV>
<DIV><BR></DIV>
<DIV dir=ltr align=left><SPAN class=609313811-18082011><FONT face=Arial
color=#0000ff><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
face=Arial color=#0000ff></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
face=Arial color=#0000ff></FONT></STRONG></SPAN> </DIV><BR>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left>
<HR tabIndex=-1>
<FONT face=Tahoma size=2><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 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>
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<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.
<P>
<HR>
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<P class=avgcert align=left color="#000000">No virus found in this
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<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
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the individual posting the message.
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