<div dir="ltr">Hi Elaine and Ann Marie,<div><br></div><div>Ann Marie...</div><div>There is research work out there on regionally, species and age specific mortality rates for street trees. For example:<br></div><div>Richards, 1979 <a href="http://joa.isa-arbor.com/request.asp?JournalID=1&ArticleID=1612&Type=2">http://joa.isa-arbor.com/request.asp?JournalID=1&ArticleID=1612&Type=2</a><br></div><div>Nowak, 1990 <a href="http://www.nrs.fs.fed.us/pubs/jrnl/1990/ne_1990_nowak_001.pdf">http://www.nrs.fs.fed.us/pubs/jrnl/1990/ne_1990_nowak_001.pdf</a></div><div>Roman and Scatena, 2011 <a href="http://www.actrees.org/wp-content/uploads/2012/08/roman-scatena-2011-street-tree-mortality.pdf">http://www.actrees.org/wp-content/uploads/2012/08/roman-scatena-2011-street-tree-mortality.pdf</a></div><div><br></div><div>Richards proposed a rule-of-thumb to achieve population stability for 'adapted, long-lived species' (in Syracuse, NY) by managing age diversity in the population so that: 40% of trees under 20 cm dbh, 30% 20 - 40-cm trees in early functional stage, 20% 40-60- cm functionally mature trees, and 10% older trees with most of their functional live behind them (Richards, 1982/83 Urban Ecology, 7, 159-171). </div><div><br></div><div>Elaine...<br><div>In terms of tree appraisals related to their amenity contribution, you've probably already been pointed towards the CTLA tree appraisal system <a href="https://www.asla.org/land/LandArticle.aspx?id=30959">https://www.asla.org/land/LandArticle.aspx?id=30959</a></div><div><br></div><div>There are also some other methods. For example, the City of Melbourne in Australia uses an adapted Burnley method to assess tree amenity value (see attached and <a href="http://www.croydonconservation.org.au/wp-content/uploads/Burnley-method-Tree-value-pdf..pdf">http://www.croydonconservation.org.au/wp-content/uploads/Burnley-method-Tree-value-pdf..pdf</a>) and adds the iTree calculated ecosystem services value on top .</div><div><br></div><div>Are those the kind of appraisals you are looking for or are you wanting to assess actual biomass for replacement?</div><div><br></div><div>Best Regards,</div><div>Amelia.</div><div><br></div><div>-- <br><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div dir="ltr"><div dir="ltr"><p style="line-height:21.3px;margin:0px 0px 1.35em;color:rgb(68,68,68);font-family:Calibri,sans-serif;font-size:15px"><b style="font-family:tahoma,sans-serif;font-size:10pt;line-height:18.9333px">Amelia Needoba</b><br></p><span style="line-height:18.9333px;font-size:10pt;font-family:tahoma,sans-serif;color:rgb(153,153,153)"><span lang="EN-US" style="line-height:18.9333px;font-size:10pt">3551 Commercial Street</span></span><span lang="EN-US" style="line-height:18.9333px;font-size:10pt;font-family:tahoma,sans-serif"><font color="#999999" style="line-height:normal"> | Vancouver | V5N 4E8<br style="line-height:18.9333px"></font></span><span style="font-size:12.8px;line-height:18.176px;font-family:tahoma,sans-serif"><span style="line-height:18.176px;color:rgb(147,196,125)"><span style="line-height:18.176px;color:rgb(106,168,79)"><span style="line-height:18.176px;color:rgb(56,118,29)"><span lang="EN-US" style="line-height:18.9333px;font-size:10pt"><span style="line-height:18.9333px;color:rgb(61,133,198)"><a href="http://www.diamondheadconsulting.com/" target="_blank" style="color:rgb(0,104,207);line-height:18.9333px;font-weight:inherit">Diamond Head Consulting</a></span></span><span style="line-height:18.176px;color:rgb(61,133,198)"><a href="http://www.diamondheadconsulting.com/" target="_blank" style="color:rgb(0,104,207);line-height:18.176px;font-weight:inherit"><b style="line-height:18.176px"><span lang="EN-US" style="line-height:18.9333px;font-size:10pt"></span></b></a></span></span><span style="line-height:18.176px;color:rgb(61,133,198)"><span lang="EN-US" style="line-height:18.176px"></span></span></span><span style="line-height:18.176px;color:rgb(153,153,153)"><span lang="EN-US" style="line-height:18.9333px;font-size:10pt"> </span></span></span></span><span style="font-size:12.8px;line-height:18.176px;color:rgb(147,196,125)"><span style="line-height:18.176px;font-family:tahoma,sans-serif"><span style="line-height:18.176px;color:rgb(153,153,153)"><span lang="EN-US" style="line-height:18.9333px;font-size:10pt"><span style="line-height:18.9333px;color:rgb(147,196,125)"><span lang="EN-US" style="line-height:18.9333px;font-size:10pt"><span style="line-height:18.9333px;color:rgb(153,153,153)">P <span style="line-height:18.9333px;color:rgb(11,83,148)"><u style="line-height:18.9333px"><a href="tel:604.733.4886" value="+16047334886" target="_blank">604.733.4886</a></u><u style="line-height:18.9333px"> ext. 33</u></span> F <span style="line-height:18.9333px;color:rgb(11,83,148)"><u style="line-height:18.9333px"><a href="tel:604.733.4879" value="+16047334879" target="_blank">604.733.4879</a></u></span></span></span></span></span></span></span></span></div></div></div></div></div><div><br></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, May 24, 2016 at 9:23 AM, Ethier Elaine <span dir="ltr"><<a href="mailto:elaine.ethier@umontreal.ca" target="_blank">elaine.ethier@umontreal.ca</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-style:solid;border-left-color:rgb(204,204,204);padding-left:1ex">Hello,<br>
I am looking for standing tree biomasse appraisals such as municipal models that could be presented to a Montreal group of professionals in relation to the Historic Mont-Royal. So far, nothing more than a few letters suggesting tertiary value of the tall specimens and a multiple factor of smaller trees to replace the loss. It's not enough to stimulate and bring awareness even to a knowledgeable scientific assistance.<br>
<br>
Thanking you in advance<br>
<br>
Elaine Ethier<br>
Plani Gester<br>
Aménagement, foresterie urbaine<br>
<br>
Le 24 mai 2016 à 11:58, Ann Marie Farrugia <<a href="mailto:annmarie.farrugia@richmondhill.ca">annmarie.farrugia@richmondhill.ca</a><mailto:<a href="mailto:annmarie.farrugia@richmondhill.ca">annmarie.farrugia@richmondhill.ca</a>>> a écrit :<br>
<br>
Good morning,<br>
<br>
I’d like to ask if anyone is aware of any information or research that defines standard urban street tree mortality rates and/or tree replacement rates (pre/post EAB) . Is there a rule of thumb the industry follows?<br>
<br>
Thanks in advance for your help,<br>
Ann Marie<br>
<br>
<br>
________________________________________________________________<br>
Ann Marie Farrugia, B.E.S., MA.Sc., EP<br>
Manager of Natural Environment<br>
Environment Services | Environment & Infrastructure Services<br>
<a href="tel:905-771-5509" value="+19057715509">905-771-5509</a> | <a href="mailto:annmarie.farrugia@richmondhill.ca">annmarie.farrugia@richmondhill.ca</a><mailto:<a href="mailto:annmarie.farrugia@richmondhill.ca">annmarie.farrugia@richmondhill.ca</a>> | RichmondHill.ca<<a href="http://richmondhill.ca" rel="noreferrer" target="_blank">http://richmondhill.ca</a>><br>
<br>
<image001.jpg><br>
<br>
<br>
<br>
<br>
<br>
<br>
<br>
</blockquote></div><br><br clear="all"><div><br></div><br>
</div></div>