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<DIV>If they are Cottonwoods (probably Carolina poplars) you might have to worry
about Poplar Branch Drop in that location too. The Silvers may be getting past
their safe age too if they’re really big. See the tread from a while ago
on canufnet about it. Do a good risk assessment.</DIV>
<DIV> </DIV>
<DIV style="FONT-FAMILY: 'Calibri'; COLOR: #000000; FONT-SIZE: 12pt">Stephen
Smith<BR>Urban Forest Associates Inc.<BR>Urban Forestry and Ecological
Restoration<BR>www.ufora.ca</DIV>
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<DIV style="font-color: black"><B>From:</B> <A
title=gina.brouwer@mail.utoronto.ca
href="mailto:gina.brouwer@mail.utoronto.ca">Gina Brouwer</A> </DIV>
<DIV><B>Sent:</B> Friday, August 10, 2012 12:02 PM</DIV>
<DIV><B>To:</B> <A title=canufnet@list.web.net
href="mailto:canufnet@list.web.net">canufnet@list.web.net</A> </DIV>
<DIV><B>Subject:</B> [CANUFNET] Preserving Mature Trees in Urban Public
Parks</DIV></DIV></DIV>
<DIV> </DIV></DIV>
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<P>Hello,</P>
<P>I am a part-time student in the Master of Forest Conservation program at U of
Toronto and I will be completing my final research paper this coming fall
semester. I have been doing studies for the Town of Cobourg throughout
this program including tree inventory, EAB Management Plan and coordination of
their Heritage NeighbourWoods pilot program this past summer with the town
arborist. </P>
<P> </P>
<P>I am starting to conduct background research for my final paper which will
focus on mature and heritage tree preservation and management options. I
am looking at mature boulevard trees in the heritage dristrict as well as mature
trees in Victoria Park along the Cobourg beach. Of particular concern are
the park trees and the impact of increased park use and major festivals
primarily relative to soil compaction. There has also been media attention
lately surrounding the impact of 'Ribfest' due to heat and grease. The
main park study area has recently seen the death of two mature elms due to DED
and branch union failure of large silver maples. The remaining mature
trees are primarily silver maple, a butternut and some massive cottonwood along
the boardwalk which have been getting attention as heritage candidates from
council and the community. </P>
<P> </P>
<P>I have not yet found much background information, guidelines or precedents on
managing user impacts in public urban parks and would appreciate any experience
or insight this group can share. The Town has started doing some
investigation this year including compaction testing around trees. Testing
leading up to the Canada Day festival in dry conditions revealed extreme
compaction. This will be an ongoing study to gather data under various
conditions in spring and fall. There are also discussions about mitigation
measures such as radial excavation and mulching. </P>
<P> </P>
<P>I appreciate any feedback. </P>
<P> </P>
<P>Many thanks! </P>
<P> </P>
<P><B><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #1f497d; FONT-SIZE: 10pt">Gina
Brouwer, OALA, CSLA, ISA</SPAN></B></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #1f497d; FONT-SIZE: 10pt">* MFC
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Central East </SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN
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905.372.2121 ext.249</SPAN></P>
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href="mailto:Gina.Brouwer@mail.utoronto.ca"
target=_blank>Gina.Brouwer@mail.utoronto.ca</A> </SPAN></P>
<P style="MARGIN: 0cm 0cm 0pt" class=MsoNormal><SPAN
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Division Street<BR>Cobourg, ON K9A 5G6</SPAN></P>
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905.372.2121 F 905.372.3621</SPAN></P>
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style="FONT-FAMILY: 'Arial','sans-serif'; COLOR: #1f497d; FONT-SIZE: 10pt">C:
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